The URL can be used to link to this page

Home My WebLink AboutMisc - 3 of 5King County Department of Development and Environmental Se_,:vices 3600 136th Place Southeast Bellevue, Washington 98006--1400 Project Name: EVENDEl L SIERRA Project No. L03RE038 L01P0016A SITEiMPROVEMENT ,ri~1~11m1~11 Date: C,.4 /5 JC <I· Location: ________________________ _ Sierra Activity No. _________ _ •:••••PbRENT<RE!PRd.lfot: Pii~gtii~ H/1 H ~~g~ : 1.30 LY 0.40 SY 1.00 SY 0:35 SY ;!Mulch, by machine,_straw,_1" deep 0.40 SY ;IRock Constr Entrance, 50' x 15' x 1' 1,030.00 Each 15' X 1' 1,800.00 Each 0.35 SY I 1,521 I 532 ESC SUBTOTAL 532 6U~Hiilli~:~11~~g~:~Jci~~tiilil1:~:1~lig~~1ti iW~~I 0.24 SY SUBTOTAL FOR PAGE Page 1 l!Clearin91<3ruilbing/Removal, trees I 6,150.00 Acre ;Excavation -bulk I 1. 10 CY !Excavation -trench I 3.00 CY 1J~ckfill & CompacUon -embankment I 3.60 !Backfill & Compaction -trench I 5. 70 CY CY iFill & Compact -common barrow I 11. 10 CY !Fill & Compact -gravel base 15.60 CY flll & Compact -screened topsoil 15.40 CY ilGrading, fine. with grader 0.70 SY Grading, fine, by hand 1.30 SY Fencing, cedar, 6' high 25.00 LF Fencing, chain link, 6' high 9.20 LF Fencing, chain link, gate, 20' 880.00 Each Fencing, temporary (NGPE) 1.10 LF Sod 4'.82 SY Monuments, 3' long 84.00 Each Surveying, lot location/lines 630.00 Acre 'Surveying, line & grade 510.00 Day rail, 4° crushed cinder 6.50 SY [1 rail, 4" top course 6.00 SY I Gab.ion, 3' thick, no earthwork 97.00 SY [Wall, retaining, rockery w/earthwork 21.00 SF SUBTOTAL FOR PAGE ,, < > < :m~~:,:~~~ lM~ifoVEME~+~ mm~~:i:t~R~ , ••• ®~~111J • ~kBi ••• !i@ttitv • WiW{ ~m:~ tw~ I. .. I I I I I I I Page2 SIERRA Project No.: L01P0016A I :AC Grinding, 4' machine !Ac RemoviltDis.eL?'."al/Re_e_air :sarricade. tt_pe Ill !Barricade, tt_pe I Curb, extruded asphalt Curb, extruded concrete !Curb & Gutter, rolled !Curb & Gutter, vertical Demolition/Disposal. c::urb ~ 9.Utter Demolition/Dis_e_osal, sidewalk 1Sawcut, asphalt, 3• depth iSawcut, concrete, per 1" depth !sealant Shoulder, AC, see AC Road oulder, gravel idewalk, 4• ffock, vertical curb jSidewalk, O" thick, rolled curt> nprng, 4" reflecfonzed lme !striping, per p~rking_ stall hickened Edge ~ OAD SURFACING " rock = 2_.5_ base & 1.S-top course) -----------------c Overlay, 1.Su AC jAC Overlay', 2" AC SIERRA Project No.: L01P0016A < i~~~~,:~~~ l~i>i#9vt¥¢~mi tmm~~:r:i~~ffi ' ~~Jt ~t~J;W WiJ~ I ~~111 :),Wit ~~~iilJ / ~i@ 7.00 SY 80.00 SY 30.00 LF 20.00 LF 1.80 LF 1.80 LF 9.30 LF 6.80 LF 10.30 LF 22.50 SY 1.30 LF 1.10 LF u.,u Lr u o.,v u ;~ I 1!>01 ,. U.ZU LF 2.90 Each 4.70 LF 5.40 SY I I _l 6.50 SY _l J SUBTOTAL FOR PAGE 3,245 Page 3 SIERRA Project No.: L01P0016A 1!1~!Loo,~ iM~RRM~~~~t~ ffimm ~?.~{;~~mp$ )\1?1:1:l :w.~~~li) T:tJHirn I idJ~~~::i j~~J~::: ~~Hili~ l lil~HJJJ b~i~t/F 1/WiW~t: ::~~~\@:; \~J~ rn ~mJtJ: \W)i~~:i I :gq1H;r: /J?:ri~~:n: ¢PmP~.t~ 1/~fJAA) IAC Road, 2•, 4• rock, First 2500 SY_ 13.70 SY "'C Road, 2·. 4" rock. Qty. over 2500 SY 9.10 SY IAC Road, 3•, 4• rock, First 2500 SY 16.50 SY P.C Road, 3", 4• rock, Qty. over 2500 SY 11.00 SY P.C Road, s·, First 2500 SY 16.30 SY AC Road, 5", Qty. over 2500 SY 10.80 SY I\C Road, 6", First 2500 SY 19.10 SY AC Road, 6", Qty. over 2500 SY 12.70 SY '\Sphalt Treated Base (ATB) (2.05 ton/cyd) 30.00 Ton Gravel Road, 4• rock, First 2500 SY 7.20 SY liGravel Road, 4• rock, Qty. over 2500 SY 4.70 SY ljPCC Road, s·. no base 14.30 SY IIPCC Road, 6~. no base 16.60 SY DRAINAGE (gP?_:_f~rrugated Plasti~ Pipe! ~'.'12 or equivalent) Access Road, RID I 9.30 SY !Bollards -fixed I 290.00 Each !Bollards -removable 475.00 Each l(CBs include frame and tid) ICB T)'P• I 850.00 Each ICB Type IL 1,000.00 Each ICB Type II, 48• diameter 1,300.00 4' deep_ for additional de_eth over 4' 320.00 +1' dee_e SUBTOTAL FOR PAGE Page 4 SIERRA Project No.: L01P0016A ~:J~ill~~tti rrmm~:;:r~~n19 l~J:i~f:t~ 1~~~:ii~wi~~~ > ()) } ii;i~kQvbii~fiil UH ) < ilvM~Mii}?•,,,,,,,,,,,,,,,,,,,, :1~Jmtm1: :1:1w.~~~:1 ,11..,;tfType II, 54" diam~ter 1,450.00 4' deep a,u. +1 · aeep1 1ame er I, 4 oeep 1 ! tor addrt1onal deptn over 4' + 1 oeep1 · CB Tyee JJ, 72" diameter 2,200.00 4' deep for additional de_e_th over 4' 520.00 +1' deepl hrough-curb Inlet Framework (Add) 225.00 Each ICleanout, PVC, 4• 86.00 Each ICleanout, PVC, s· 115.00 Each ICleanout, PVC, a· 142.00 Each !Culvert, PVC, 4• 4.50 LF !Culvert, CPP, 6" 9.30 LF ,jCulvert, PVC, 6" 6.40 LF !Culvert, CMP, 8" 9.50 LF !Culvert concrete, 8" 12.90 LF !Culvert, CPP, 6" 10.00 LF !Culvert, PVC, ·a· 8.00 LF !Culvert, CMP, 12" 14.60 LF !Culvert, concrete, 12· 17.90 LF !Culvert, CPP, 12" 16.50 LF !Culvert, CMP, 15" 18.70 LF !Culvert, con::rete, 15" 22.50 LF !Culvert, CPP, 15" 18.50 LF C:i,lvert. CMP. ~ff' ____ _ 21.90 LF SUBTOTAL FOR PAGE Page 5 t,;Ulv.ert, concrete, 18" Culvert, CPP, 18" vulvert, CMP, 24" Culvert, concrete, 24" Culvert, CPP, 24• Culvert, CMP, 30" Culvert, concrete, 30" jCulvert, CMP, 36" IICulvert, concrete, 36" 11Lu1ven, -·ri , :.iv 11Lu1ven, concre1e, vuiven, 1...,u1ven, concreLe, vu1ve11, v1vi, , uu Culvert; concrete, 60" Ditching, .bare,· roadside ;Flow Dispersal Trench French Drain Mid-tank Access Riser, 36" Pond Overflow SpHlway Restrictor{Oil Separator. 12" Restrictor/Oil·Separator, 15" Restrictor/Oil Separator. 16" 27.60 22.00 30.30 39.80 29.00 38.60 64.70 62.80 83.20 a,.uc ·iu1. 11.l. I IL.VU 164.00 5.40 1,100 base + 15 00 12.30 700.00 4.70 785.00 885.00 1,035.00 LF LF LF LF LF LF LF LF LF L, Lr Lr u u- LF CY LF LF Each SY Each Each Each ''"''',EXISTING'°"''' ''FlJTllRl'iPUBUC > 'iP.RIVAT€'>','' 'H'ilb'i'AClllTIBS,:'· ) IM~mmmmt~mffl 1tmtt&r:~~m~ i~~W!! 1 &Jg)J SUBTOTAL FOR PAGE Page 6 SIERRA Pro1ect No.: L01 P0016A DRAINAGE (Con'!.) Riprap, placed 28.00 CY ank End Reducer 400.00 Each IT rash Rack, 12" 160.00 Each IJ rash Rack. 15" 185.00 Each fTrash Rack, 18" 210.00 Each rash Rack, 21" 240.00 Each PARKING LOT SURFACING 2" AC, 2" top course & 4" select borrow 8:10 SY 1.5" top course & 2.5" base course 4.70 SY " select borrow 1.75 SY !WRITE-IN ITEMS .Play Structure 5,508.00 each Spring Animals 450.00 each Basketball Pole 1,120.00 each Bencties 326.00 each Pik-nik table 792.00 each Trash Rec. 398.00 each rrrees 125.00 each SUBTOTAL (SUM ALL PAGES): 30% CONTINGENCY & MOBILIZATION: 11 TOTAL: l 1 5,508 2 900 1 1,120 2 652 1 792 1 398 8 1,000 13,615 4,084 17,699 "vrwie pl)~® • ~RiV,\Tf t ~!~tts 1HT!sf •••·•···• .· .. •IMPRO\IEMENJS AND'QON\IEYANCE ,,,.·.·. if < ) • ~y:\;r~iii{ .. --"" (A) Page 7 SIERRA Project Na.: L01P0016A lWJW~!l (B) (C:) TI Quantities above were corpp! ,, \;1· ., Signatur°'=f:~--' BS PE Registration Nu er: -:::::_-:';{,,.·._nc_4::L-__,7_t,._,.,.· -,----------- Firm Name ((),(C ~ L) tc~jf,:','Y.)._\IQ ( Address )-"\; -J \ \ (\ (., c'.:)'Cj \4. i..., \ .. "'A'·\()\ ,,.-/ . QI! \ ·.-," \ \ (' ') UC \ :0 6: J (;:(,'.JC.J "'] This section to be completed by King County BOND COMPUTATIONS: Date:--------~----- Telephone Number:-------- SIERRA Project No.: L01P0016A PERFORMANCE BOND AMOUNTS MAINTENANCE BOND AMOUNT DEFECT BOND AMOUNT Stabilization/Erosion Sediment Control (ESC) Existing Right-of-Way Improvements Future Public Road Improvements . Private Improvements RID Facilit_ies and Conveyance Systems TOTAL PERFORMANCE BOND AMOUNT (D) (E) (F) (T) • RIGHT-OF-WAY & SITE RESTORATION BOND I (D+E) (First $7,500 of bond' shall be cash.) PERFORMANCE BOND TOTAL AFTER BOND REDUCTIONS (T-A,B ORC) #1 #2 #3 Original bond computations 532.35 17,699.24 0.00 0.00 0.00 18,231.59 18,231.59 NOTE: The word "bond" is used to represent any financial guarantee acceptable to King County. prepared by:------------- (E+F) x 0.25 = ' ' Date:'--------- Page B 4,424.81 x0.15= ---------- Signature of Person Preparing Bond Reduction #1 #2 Date #3 Date Date NOTE: Total bond amount remaining after reduction shall not be less than 30% of the original amount of the sum of the maintenacne and defect amount shown above, whichever is greater. 02120104 16:02 FAX 206 726 9417 Michael lltt lU. §. JLANII)) ]l))JEVJEJLOIPMENT A§§OCilA'JI'lE§ Michael A. UTT PO Box 22lOO SEA TIU. WA 98 l Zl-0200 MIONE 206-726-1445 FAX206-716-9417 Howard E. S1ambury PO Box 822'18 Kenmore. WA 98021 tHONE 206-440-006S Fi\X 206-440-llS2 CONFIDl!N11A.Lrrf NO TIT CE. The infomwion in lhis Wt mcssasc i!l privilq;cd and conJidmtinl. 11 is intended only for the 11SC of Ute recipicn1 nmu:d IIW'fc (or the: cmp\oyoc Of astnt rcsporuiblc \0 delivcr it to tho intended m:irimt). lfyuu m:.eivcd this in mor, you IR hCJdJy notified th.11 ARY dk~inllbon, disb'ibution o, copying nf lhi• ~unication is suia.ly pl'Oltibiled. If you ha~ rcceivctl lhis message in error, plca<ic notify m by \dq)bonc. immcdialy, 111d rctwn the original mcss46C ro us al the: ubave Gddrus vi:1 U. S Postal Sn,,i~. We will, or co~. be happy to rcimhursc you for any cosu. Thank )'OU. PLEASE DELIVER. TO: FAX No.: February 20, 2004 Karen Scharer, KC DDES 296-7051 RE: Evendell; L01P0016A and L03RE038 MESSAGE: Accompanying this fax cover is purchasing the necessary Transferable Density Credits for the referenced plat. an agreement regarding Development Rights or rr you do not receive _L_ pages. (including this cover pose), please call (206) 726-1445 ns soon as possible. 02120/04 16:02 FAX 206 726 9417 Michael lltt DENSITY CREDIT TRANSFER AGREEMENT THIS AGREEMENT is entered into this 20 day of February, 2004, between 4A Development Corporation, a Washington corporation (hereafter referred to as "Transferor"') and U.S. Land Development Associates (hereafter referred to as "Transferee''). Transferor and Transferee are collectively referred to herein as the "Parties". RECITALS WHEREAS, Transferor is the legal ownCT of certain °transfer of development credits" removed from the parcel(s) for which the tax parcel identification number(s) and legal description(s) arc set forth in Exhibit "A" to the "Transfer of Development Credit Sending Site Certificate", Certificate Number 0002, DOES File Number A98VOl 10, issued by King County (hereafter the "Certificate"); and WHEREAS, the Transferee is developing cenain real property located in K.ing County, State of Wa._shington legally described as Evendcll tax no. 142305-9009 & 142305-9022 DOES file no is LOIP0016A & LOJRE038 (the "Receiving Site"); and WHEREAS, pursuant to Certificate, the Transferring Site has been qualified to use, sell or otherwise transfer residential density credits pursuant to Chapter 21 A.55 of the King County Code to qualifying properties such as the Receiving Site; and WHEREAS, the Parties have reached agreement whereby Transferee shall purchase from Transferor certain residential density credits ("RDC") for use by Transferee in conjunction with the development of the Receiving Site which purchase shall be made pursuant to the tem1s and conditions set forth in this agreement. NOW, THEREFORE, for good and valuable consideration including the covenants and promises herein contained, the Parties agree as follows: I. Purchase and Sale of RDC's. Transferor sells to Transferee and Transferee purchases from Trans~total oftw. enty (2. 0) RDC's as defined in Chapter 21 A.06 of the King County Code. ~ f(!;P" p~/~~?-{ 7-0 / O'f 2 ~ice and Non-Refundable Deposjt. The purchase price to be p•i<I by Transferee shall be Seven Dollars (US $7,000.00) per density credit purchased hereunder for a total of one hundred & for,y thousand Dollars (US S 140,000.00). Payment of the purchase price shall be made in cash or other certified funds at the date of closing set forth hereafter in paragraph 3. Tf paid within ninety (90) days balance due is one hundred & twenty one thousand dollars (US $121,000). If paid after ninety (90) days balance due is one hundred & forty one thousand dollars (US$141,000) · Simultaneous with the execution of this Agreement, Transferee shall deposit the sum of Fourteen Doll;irs (USS14,000.00) representing non-refundable deposit for the purchase of RDC's ,ho.;,,/\ f\'l Pagel of 5 02/20/04 16:02 FAX 206 726 9417 Michael Utt herewider. Check should be made out to 4A Development Corporation. Upon clo,ing, the deposited money shall be applied toward the purchase price. 3. Closing. The closing of the sale and purchase transaction hereunder shall occur within ninety (90) days from the signing of this agreement. If the buyer dose not closes within ninety (90) days the above purchase price will increase to Eight Thousand Dollars ($8,000) per unit. Notwithstanding the foregoing, if closing does not occur within nine (9) months from the date hereof, this Agreement shall tcnninate unless extended in writing hy the mutual agreement of the Parties. Upon termination, Transferee shall have no further right to or claims upon the RDC's .. which arc the subject of this Agreement. 4. Representations of Transferor. Transferor represents and warrants to Transferee that it is the legal owner of the T ransfcning Site and that the Transferring Site has been certified for the sale or transfer of RDC's as set forth in the Certificate. Transferor makes no other representations and warranties of any type to Transferee relative to the RDC's or the Transferring Site. 5. Representations of Transferee. Transferee represents and warrants to Transferor that Transferee is duly organized and existing pursuant to the laws of the State of Washington and is qualified to enter into the transaction contemplated herein. Transferee further represents and wamintS that the Receiving Site qualifies or is eligible to qualify for receipt of the RDC's pursuant to the King County Zoning Code (K.C.C. 21A). 6. Responsibilities pf the Parties. Transferor and Trnnsfcrcl! shall cooperate with each other and act in good faith in obtaining approval for the transfer of the RDC's to the Receiving Site, provided that all costs related to the approval of and the transfer of the RDC's hereunder, including the preparation and recordation of documents required to consummate said transfer, shall be borne solely by Transferee. Transferor shall execute such documents as may be required by any examiner or other official representing King County to finalize the transfer of the RDC' s, provided Transferor shall not be required to execute any documents which would convey any interests in the Transferring Site other than the RDC's. 7. Miscellaneous. 7.1 Successors and Assigns. This Agreement shall be binding upon the Parties, their respective agents, representatives, affiliates and successor~ and assigns. 7.2 Waiver and Modifications. The provisions of this Agreement may not be waived or changed except by a writing signed by the Party against whom such waiver or change is asscncd. No waiver of breach shall constitute a subsequent waiver of any subsequent breach, and if any provision of tltis Agreement is determined by a court of competent jurisdiction to be invalid, the remaining provisions shall remain enforceable. 7.3 Notice~. All notices or other communications provided for in this Agreement shall be deemed to have been duly given if delivered personally, by certified mail rctuJn receipt requested, or by facsimile to the address or facsimile number of the receiving Party set forth in this Agreement (or such different address or facsimile number as either Party shall have specified in writing to the other). Notices personally delivered or sent by facsimile shall be effective upon their receipt; notices sent by mail shall be effective three (3) days after mailing. Page 2 of S 02/20104 16:02 FAX 206 726 9417 Michael Utt 7.4 Governing Law· Arbitration: Attorneys Fees. This .Agreement shall be governed by and consttucd in accordance with the laws of the State of Washington and the King County Code. In the event a dispute arises between the parties hereto, said dispute shall first be submitted to arbitration in King County, State of Washington, which arbitration shall be governed by the rules of the American Arbitration Association. An independent arbitn>tor shall be selected by the Parties hereto or, if an arbitrator is not agreed upon by the Parties within twenty (20) days from the point the arbitration is filed, an arbitrator shall be appointed by the American Arbitration Association. The decision of said arbitrator shall be final and binding upon the parties and enforceable by a court of law. 7.5 Headings. The headings, subheadings, and other captions in this Agreement are for convenience and reference only and shall not be used in interpreting, construing, or enforcing any of the provisions of this Agreement. 7.6 TIME IS OF THE ESSENCE OF THIS AGREEMENT. IN WITNESS WHEREOF, the undersigned acknowledge that they have read this Agreement, understand it, agree to be bound by its terms and conditions, and have caused this Agreement to be executed as of the day and year first above writlcn. 7.8 EXCISE TAX Seller agrees 10 pay excise tax at time that balance of the agreement is paid. DATED this 20 day of February, 2004. "Transferor" "Transferee" ,,~~ Its · · Pai:e 3 of s ~15 02/20104 16:02 FAX 206 726 9417 Mlchael lltt Corporate Acknowledcements STA TE OF W ASHlNGTON . ) ) ss COUNTY OF KJNG ) On this ,l)_ day of r&(UCl% , 2004, before me the undersigned, a Notary Public, personally appeared C K):l{lfSLL', :J:atXc,llY) , to me known to be the ~ o;:t: of 4A Development Corporation, the corporation that executed the within IIJldoregoing instrument, and acknowledged that it was signed as a free and voluntary act and deed of said col])oration. COUNTY OF KJNG Page 4 of S ~16 02/20/04 16:02 FAX 206 726 9417 Michael lltt EXHIBIT A PARCEL A: Tax No. 332]05-9002-08 The south half of the northeast quarter of the northeast quarter of section ]J, township 23 north, range 5 east, w.m. in king county, Washington. PARCEL B: Tax No. 282305-9101-05 The west 515 feet of the ea,t 715 foe of that portion of the southeast quarter of the southeast quarter of section 28, townghip 23 north, range 5 east, w.m. in king county, Washington, lying southerly of petrovitsky road extension as conveyed to king county by deed recorded under recording number 2565920; PARCELC: TaxNo. 332305-9062-05 The west 515 feet of the east 715 feet of the north halfof the northeast quaner of the Northeast quarta of section ]3, township 23 north, range 5 cast, w.m. in king county, Washington; EXCEPT the north 30 feet thereof heretofore conveyed to King County for road purposes by deed recorded under recording number 1064196 records of King County. Page 5 of S ~17 .., •' ~-- TYPES 3 and 4 LOG SHEET (Format Plat REVISION, Rezone, Special Use, Shoreline Redesignation) FILE NUMBER: L03RE038 HEARJNG DATE(S): ~b~·0.z~'d~!IJ~'.Y~--- PLAT/PROJECT NAME: EVENDELL PLAT REVISION CONTINUANCE HEARING DATE(S) ____ _ PLANNER: Karen Scharer PROPOSED ORDINANCE NO.: # ,;,7?l::'.),j' -t;J''/'f i} ENGINEER: Bruce Whittaker RELATED APPLICATION & FILE NO. L01P0016 APPLICATION FILED (date): 10/01/03 COMPLETE APPLICATION (date): ____ _ EXAM INER DECISION/REC: '-~'Ll"-'-''-"'+"s,;..,-""'+-~- AP PEAL FILED: D NO ~ YES date:_1.1· c;.>.J"'-1-"'-i--- A. coUNc1L ACTION, APPE.l\LDCt\'l,l l?D 0RD1NANCE No., I 4<Juc::i EFFECTIVE oATE, 5 f ,<:> / o!l HEARING DATE(S) -~3-L...\-\-'-'1\p"'+\..,_i)-"Y~---------------------- 1. r}-NOTJCE OF APPEAL 2. D APPEAL ARGUMENTS &HEARJNG EXAMINER'S ACTIONS I. D PREHEARJNG CONF. NOTICE date(s): ____ _ 2. ~HEARING NOTICE date(s): 1-.,2 d g//J 3, ' 3 0 PREHEARJNG ORDER date(s): ____ _ 4 D CONTINUATION 5. 'SI!. REPORT date(s): --~-- date(s): 4>'/70 L{ 6 0 RECONSIDERATION 7. '¢_APPEAL SUMMARY date(s): ___ .___ ffai/01 date(s): & ODES STAFF ACTIONS I. D CONTINUATION NOTICE date mailed: --,---,,---- 2. ft.REPORT Q.<S\,Q..CX\~\\ date mailed: / /~4' .t./ 3. '¢. AElElti~IE>UM~Po~/~1° 'l date mailed: 1/l.;Jo·t.J. ~Ah_.~~·~I __ _ 4. ~ TRAN SM ITT AL TO EXAMINER (POR 's/DOCS/STUDIES) date sent: rl) )( L@/,, ll. i #i /.E ~, 5. ~PROPOSED ORDINANCE NUMBER EMAIL TO THE KC CLERKS OFFICE date sent: . /4£.:V',,b .3 (YsEPA REQUIREMENTS . I. THRESHOLD DETERMINATION:. /tlnm,1/I/AI/JZ2eJl • DATE ISSUED: _,/...L6.<..0-<-/.:::~:.:4,.~c....s..3.,__ 2. DATE 500' RADIUS/AGENCIES/PORS/STAFF SENT: ------------------ 3. APPEAL FILED: DYES ONO a. APPELLANTS: -------------- b. APPEAL ARGUMENTS: ----------- date received: -------- date received: -------- date received: -------- date received: -------- date received: -------- date received: -------- L03RE038 E. PUBLIC NOTICE REQUIREMENT 1. NOTICE OF APPLICATION a) AFFIDAVITOFPOSTING/POSTINGPACKAGESENT /d0,::::Jl2>3 REC'D //~ .t(}3, b) LEGAL AD SEATTLE TIMES date(s) sent: lo/Jd/'9 ? date published: /l/.1/@.f LOCALS date(s) sent: /MtJ/03 date published: // H /b..J c) 500' RADIUS/AGENCIES/POR's/STAFF date(s) sent: // a()/t:::i ;?. , ,::?,t:PM~//.Jll-> /\.0rJ-~ ,IJc:J/1 LL- 2. NOTICE OF RECOMMENDATION/PUBLIC HEARING a) LEGAL AD SEATTLE TIMES date(s) sent: /t:J/3,t) date published:-<-/,_,/Nc....<..~-- LOCALS date(s) sent: /L} /??) date published: --=.'.:...I /:.....cf" __ _ b) 500' RADIUS/AGENCIES/POR's/STAFF dates: 4e'O' £)/"', 1/-/,t)-~3 Q APPLICATION Date received: October 1, 2003 1. D INTAKE CHECKLIST D APPLICATION FEE ~LICANT DESIGNATION FORM I 2. 3. 4. 5. 6. 7. !:!'LEGAL DESCRIPTION _II D ASSESSOR'S MAPS:----------------+------- ~RTIFICATE OF WATER AVAILABILITY / o/c:ERTIFICATE° OF SEWER AVAILABILITY 1 8. D PRELIMINARY HEALTH APPROVAL 9. D CERTIFICATE OF FUTURE CONNECTION 10. ~ !STRICT RECEIPT 11. SITE PLAN/PLAT MAP 12. ig-{:§91'.L LOT PROOF 13. ~~SITIVE AREA AFFIDAVIT 14. Ef"~IRONMENTAL CHECKLIST 15. i3"T~SP~TATION CONCURRENCY 16. i!l"LEVEL "ffl,11'!1)RAINAGE ANALYSIS 17. 9"'bTHERlr.:5/,Q/Yl!M/.Je:rLMV64d'lt9.~t.,e;f£.t.Pr&:J/~!T/f,6,0~ C?./.J1t41,:23/7#3 &/l?8J·°Jdl4!it2 IIAt/},,l(_AJ-'.ST l).c'J.IWf'l.fAff a;e.;n. tl~exy.a 18 ld'WAIVER(S) ,4(}£_,/11?,2 AtJ/J/JcJ/,1:,.Y E;_. £),691.AIME &.M/"U/rAIT ~~cJ;R.r · -~ r. JJ£NS-rY ~s 6. L.~77,Vl.?;etJ/11 /11•~/11/)./lJ?J G. ADDITIONAL PLANS/MAPS DATES RECEIVED:#• Mlfil I.,,£.£.' C!tJAJ&/ ~,5uC:.Y I. CONCEPTUAL DRAINAGE PLAN 2. WETLAND MITIGATION PLAN 3. REVISION NO. 1 4. REVISION NO. 2 5. REVISION NO. 3 6. REVISION NO. 4 7. OTHER MAPS a) _________________ _ b) ________________ ~ c) ____ __,.-----------~ d) ________________ ~ e) ________________ ~ !)----------------~- L03RE038 ~SPECIAL STUDIES Q WETLAND/STREAM REPORT DA TES RECEIVED /4/; di 3 //J/J/J7il)J/Jll)Yl /0;1 ~.3 , 2. GEOTECHNICAL REPORT ORAFFIC STUDY 04-/4.3 //-,.Z,,4,? /YIU1~ Rf-:~~ #da.f,,,_ '. 7 ~~~c...;;, 4. WILDLIFE STUDY Cy OTHER (document title) /11P?'L!AV~V I. k,£ /,t>/,,,&3 I. GENERAL CORRESPONDENCE 1. 1aL:12.03 ffe?/1£/E-/#/>oM7,7&U 2. µk/d,::3 -:5£/A!U dv&d/i/3/UTY /p'/A'<J.S/,aeU 3. 4. 5. 6. 7. 8. 9. JO. 11. 12. 13. 14. I5. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 3 I. 32. 33. 34. 35. ® King County Department of Development And Environmental Services 900 Oakesdale Avenue Southwest Renton, Washington 98055-1219 Adoption For: Associated Permits: Proponent: Project Description: Project Location: WAC 197-11-965 ADOPTION NOTICE L03RE038 -Evendell /Major Plat Revision L01P0016 Howard Stansbury, U.S. Land Development Associates c/o Michael J. Romano 1 Centurion Development Services 22617 -3th Dr. SE Bothell, WA 98021 Proposed is to subdivide the site into 70 lots for detached single-family residences. Twenty of the lots will result from transfer of density credits to this site. Lying south of SE 136'h St. between 156'h Ave. SE and l60t1' Ave. SE. Adopted Documents Prepared by: King County Department of Development and Environmental Services (DDES), Land Use Services Division (LUSD) Adopted Documents Prepared on: December 23, 2002 Description of Documents Being Adopted: Mitigated Determination ofNonsignificance (MDNS) for rezone and subdivision of the site into 70 lots and Environmental checklist The Documents are available for Review at: King County DDES, LUSD 900 Oakesdale Avenue SW Renton, WA 98055-1219. After an independent review, the Department has decided that these documents are appropriate for this proposal and has adopted the documents. This document meets the Department's environmental review needs for the current proposal and will accompany the proposal to the decision-maker. There are no administrative appeals of this Notice of Adoption. ~~ Greg Borba, Current Planning Supervisor, LUSD SEP A Responsible Official Date: November 10, 2003 •... i-·~~. ,, ® King County Department of Development and Environmental Services Land Use Services Division 900 Oakesdale Avenue Southwest Renton WA 98055-1219 DATE: TO: FM: RE: October 31, 2003 Anne Noris, Clerk of the Council King County Council Greg Borba, Planning Supervisor Land Use Services Division Introductory Ordinances for Preliminary Plats Attached are Introductory Ordinance(s) for the Hearing Examiner's agenda scheduled for public hearing, as follows: File No, L03RE038-EVENDELL PLAT REVISION scheduled to be heard on January 22, 2004. A copy of the hearing agenda for each item is also attached for your information. If you have any questions or need additional information, please contact me at 296-7118. Attachments ' .. -._ • ® King County Department of Development and Environmental Services Land Use Services Division 900 Oakesdale A venue Southwest Renton WA 98055-1219 PRELIMINARY PLAT AGENDA HEARING EXAMINER FOR METRO POLIT AN-KING COUNTY COUNCIL LAND USE SERVICES DIVISION, BLACKRIVER CORPORATE PARK KING COUNTY DOES HEARING ROOM 900 OAKESDALE AVE SW, RENTON WA Ja11uary 22, 2004 -PUBLIC HEARING 9:30 a.m. or as soon thereafter as possible FILE NO. L01TY401 EVENDELL REVISION PRELIMINARY PLAT REQUEST Owner: Address/Phone: STR: Location: Proposed Use: Fire District: School District: Howard Stansbury, US Land Development 22617 8,h·Drive SE, Bothell, WA 98021 Phone: ( 425) 486-2563 14-23-05 Located south of SE 136'h Street and between 1561h Ave SE and 1601h Avenue SE Proposed to subdivide into 70 lots for detached single-family residences with tracts for drainage and recreation. The applicant proposes to use Density Credit Transfers to allow for 20 of the 70 lots. No. 25 #411 Renton :.. ----~-..... ..title .. body • AN ORDINANCE authorizing a subdivision on certain property located at south of SE 136th Street and between 156th Ave SE and 160'h Ave SE, at the request of Howard Stansbury, US Land Development Associates, department of development and environmental services file no. L03RE038 . TO: FAX NO.: PHONE NO.: King County Dept. of Development and Environmental Services Land Use Services Division 900 Oakesdale Avenue Southwest Renton, Washington 98055-1219 Fax No. 206-296-6613 or 206-296-7051 FAX COVER SHEET Cheryle Packard 206-296-1654 206-296-4660 Total numbers of pages including this cover sheet: ~ From: Carol Rogers Phone: 206-296-7116 Sender's Name Sender's Phone Permit Name/Number: L03RE038/L01 P0016 -EVEN DELL Subdivision REVISION-Parties of Record list, applicant name & address. property location. COMMENTS: Hearing date is set for January 22. 2004. fJL!d//f.J7!t J1il1T. ,/Er 4-P 12!.w<J E Z-&1//£ ddY ,1J11S0f/i .?i<t1A rdltt: i!Y-:-~ Exa mi nerF ax Cover .doc 4 CREEKS UAC ATTN: CLAUDIA DONNELLY PO BOX 3501 RENTON, WA 98056 BORBA, GREG CURRENT PLANNING SUPERVISOR ODES/ LUSD MS, OAK -DE· 0100 BRENDEN, MARSHALL 18225 SE 128TH RENTON, WA 98059 BRYANT, RONDA 15406 SE 136TH ST. RENTON, WA 98059 CARLSON, MARILYN 13616 156TH AVENUE SE RENTON, WA 98059 CASEY, LAURA WETLAND REVlEW DDES/LUSD MS: OAK -DE -0100 CITY OF RENTON ATTN, REBECCA LIND 1055 SOUTH GRADY WAY RENTON, WA 98055 CLAUSSEN.KIM SR. PLAT PLANNER DDES/CPLN MS: OAK -DE· 0100 COFFIN, RONALD 16015 SE 135TH PLACE RENTON, WA 98059-6828 -- LOIP00\6 LOlP0016 LOIP00\6 LO!P00\6 LO!P00\6 LOIP00\6 LOJP0016 LOIP0016 LOIP0016 DAY, SHIRLEY 14412 167TH PLACE SE RENTON, WA 98059 DORST AD, ROGER EVERGREEN EAST REALTY PO BOX 375 REDMOND, WA 98073 GRAYES, KATHY 13020 J60TII AVE SE RENTON, WA 98059 HANSON, STEPHEN & YVONNE 15611 SE 138TH PLACE RENTON, WA 98059 HAOZOUS ENGINEERING fNC ROBERT DARROW 15428 45TH CT MUKILTEO, WA 98275 HARBOUR HOMES KURT WILSON 1010 S. 336TH ST., SUITE #305 FEDERAL WAY, WA 98003 HEMNES, VALERIE 15627 SE 139TH PLACE RENTON, WA 98058 HIGII, VICTOR & GWENDOLYN 13405 158TH AVENUE SE RENTON, WA 98059 HILL, EDWARD, JUNE & KRISTY 13527 -156TH AVENUE SE RENTON, WA 98059 LOIP00\6 LO!P00\6 LOlP0016 LOJP0016 LOIPOOJ6 LOIP0016 LOlPOOl6 LOIP0016 LOIP0016 HILTON, EDWARD & NANCY 13414-158THAVENUESE RENTON, WA 98059 HUGHES, KURT 19112NEJ46THWAY WOODINVILLE, WA 98072-636 l JAQUES, FRED AND HELGA 13114 158TH AVENUE SE RENTON, WA 98059 JOHNSTON, LEONARD J. 16016 SE 135TH RENTON, WA 98059 KC EXECUTIVE HORSE COUNCIL ELEANOR MOON 12230 NE 61ST KIRKLAND, WA 98033 KC HEARING EXAMINER CHERYLE PACKARD LOIPOOl6/LOITY401 EYENDELL MS: BOC· CC· 0850 KEZELE, DON 15657 SE 137TII PLACE RENTON WA 98059 LANGLEY, KRISTEN LAND USE TRAFFIC DDES/CPLN MS: OAK -DE-0 JOO LEE,JOANN 13802 160TH AVENUE SE RENTON, WA 98059 LOIP0016 LO\P0016 LOIPOOl6 LOIPOOl6 LOIPOOl6 LOIP0016 LOIP0016 LOIP00l6 LOIPOOl6 LEX, TIM & GINA 13116158THAVESE RENTON, WA 98059 LYMAN, STEVE 14505 · 160TH AVENUE SE RENTON, WA 98059 MARCY, JERRY POST OFFICE BOX 575 SEATTLE, WA 98111 MARTIN, FRED & GLORIA 13019160THAVESE RENTON, WA 98059 MOKIN,BILL 14404 162ND AVENUE SE RENTON, WA 98059 MUHICH, STEVEN & PERI 13420 160TH AVENUE SE RENTON, WA 98059 NIPERT, SALLY 14004 156TH AVE SE RENTON, WA 98059 Norr. FLORENCE 15915 SE 134TH PLACE RENTON, WA 98059 NYBLOM, DAVE PMB 129 4820 NE 4TH ST., #IOI RENTON, WA 98059-4845 LOIPOOl6 LOIPOOl6 LOIPOOl6 LOIPOOl6 LOIPOOl6 LO\P00\6 LOIPOOl6 L.OlPOOl6 LOlPOOl6 OLIPHANT, RICHARD & ANITA 16519 SE 145TH ST. RENTON, WA 98059 PETRIE, DAVE 81 ! SOUTH 273RD COURT DES MOINES, WA 98198 PLATT, DA VlD 510 PANORAMIC DRIVE CAMANO ISLAND, WA 98282 ROGERS, CAROL CURRENT PLANNING SECTION DDES /CPLN MS: OAK -DE-0100 ROLLII-JGER, MARSHA 15646 SE 138TH PLACE RENTON, WA 98059 ROMANO, MICHAEL CENTURIAN DEVEL SERVICES 226l78THDRSE BOTHELL, WA 98021 SCHARER, KAREN PROJECT PLANNER MS: OAK-DE-0100 DDES/CPLN SCHOLES, GENEVA 12924 158TH AVE SE RENTON, WA 98059 SCHUSTER, CURTIS G JOHN I. SCOTT REAL ESTATE 12320 NE SHI ST, #100 BELLEVUE WA 98005-4831 LOIP0016 LOIP00l6 LOlPOOl6 LOlPOOl6 LOIP0016 LOIP0016 L0lPD0l6 LOlPOOl6 LOIP00l6 SCOBY, CHARLES & VIOLA 13112158THAVESE RENTON, WA 98059-853 l SEA TILE KC HEAL TH DEPT. E. DIST. ENVIRN. HEALTH 14350 SE EASTGATE WAY BELLEVUE, WA 98007 SlDEBOTHAM, KAREN & JEFFREY 13004 158TH AVE SE RENTON, WA 98059 SLATON, DANIEL 8. 15315 SE 133RDCOURT RENTON, WA 98059 STANSBURY, HOWARD US LAND DEVL. ASSOC/CENTURION 226178THDRSE BOTHELL, WA 98021 STREIT, PEGGY 13512160THAVENUESE RENTON, WA 98059 THORBECK, PENNY 15650 SE 138TH PL RENTON, WA 98059 WA ST.ECOLOGY DEPT I WQSW UNIT ATTN: LINDA MATLOCK PO BOX 47696 OLYMPIA WA 98504-7696 WATLER, DA YID 15635 SE 138TH PL. RENTON, WA 98059 LO\POOl6 LOIPOOl6 LOIP0016 LOIPOOl6 LOIP0016 LO\P0016 LOIP0016 LOlPOOl6 LOIP0016 WEST.LARRY GEO REVIEW DDESISDSS MS: OAK -DE-0100 WHITTAKER, BRUCE PRELIMINARY REVIEW ENGINEER DDES I ERS MS: OAK -DE-0100 WILMOT, MR. & MRS. 13900 160THAVENUESE RENTON, WA 98059 WOLBERG, ALVIN 16021 SE 136TH STREET RENTON, WA 98059 ZEEK, HAROLD & ELEANOR 16621 SE 145TII ST. RENTON, WA 98059 LOIPOOl6 LOlPOOl6 LOIPOOl6 LOIPOOl6 LOIP0016 0 Department of Development and Envirorunental Services Land Use Services Division 90Q·Oakesdale Avenue Southwest Renton, Washington 98_D55-1219 Applicant: Howard Stansbury U,S. Land Development Associates .. C/0 CenturionDevelopment Se!7'vices 22617 81h Dr. SE Notice of Application, Recommendation & Public Hearing T e3 File #'s: L03RE038 Even dell Plat Major Revision ODES Contact: Karen Scharer Telephone N.o. (206) 296-7114 .. karen.scharer@metrokc.gov Bothell, WA98021 425486-2563 . Date Applications Filed: October 1, 2003 Date Appl. Determined Complete: October 27, 2003 Project.Location:. Lying south of SE 1361h St. between 1561h Ave. SE and 1601h Ave. SE. PtojectDescription: Subdivide the site into 70 lots for detached single family residences with tracts for recreation and drainage. The applic;ant proposes to use Density Credit Transfers to allow for 20,.ofthe 70 lots. Permits requested in this application: .Major'Plat Revision . Relevantenvironmental docuinents are available at the address. below: SEPATD ~MONS, SEPAAdoption, Environmental cl:lecklist, drainage study, wildlife study & traffic . impactanalysis. Development .regulations to be used for project mitigation, known at this time: KCC 19A, 20, 21 A, inCluding sensitive area regulations, road standards.and 1998 Surface Water Design Manual. SEPA TD -MONS Consistency with applicable County plans and regulations: This proposal will be reviewed for compliance with all applicable King. County Codes, including those noted above. . ; Other.permits not .included in'this application, known at this time: None at this time Comm1.1nity:Plan: Newcastle Zoning: R4 praihage··Subbasin: Orting Hills subbasin of Cedar River Section/Township/Range: 14,23-.05 . DepartmentRecom111endation to the Hearing •Examiner: Approve subject to conditions Date of Public Hearing: · January 22, 2004 at 9:30 a.m. Location.of Public Hearing: DDES Hearing Room, 900 Oakesdale Avenue Southwest Renton, WA 98055°1219 A public hearing before the King County Hearing Examiner is required for this application. The Department of Development and Environmental Services (DDES) will issue a report and recommendation to the Hearing Examiner two (2) weeks prior· to the scheduled public hearing. Following the close of the public hearing, the Hearing Examiner will issue a written decision which may be appealed to the Metropolitan-King County Council. Any person wishing additional information on this proposed project should contact the planner at the address and/or telephone number listed above. Written comments may also be submitted to DDES. You may review the application and any environmental documents or studies in our Renton office. NOTE: If you require this material in braille, audio cassette, or large print, please call (206) 296-6600 (voice) or (206) 296-7217 (TTY). A public hearing as required by law will be held to consider the approval of this application. If the Renton School District announces a district-wide school closure due to adverse weather conditions or similar area emergency, the public hearing on this matter will be postponed. Interested parties will be notified of the time and date of the rescheduled hearing. Any questions regarding postponements and rescheduling can be directed to the Hearing Examiner's Office at (206) 296-4660. Department of Development and Environmental Services Land Use Services Division 900 Oakesdale Avenue Southwest Renton, Washington 98055-1219 Mailing Date: November 10, 2003 --------------------------------------------------------------------------------------------------- Please send me notification of the public hearing and other official notices concerning this application. No need to return a new slip if you are already listed as a party of record on the original Evende/1 plat/rezone L01P0016. File No's: L03RE038 Evendell Revision ( olease priht) Name: _______________________________ _ Address:------------------------~~----- Telephone No.: ------------Exhibit No. ~);l 1Rtem 8 ,,,,.N.vedo. L. 00_ ~~J :-'1< ALTERNATIVE FORMATS AVAILABLE UPON REQUEST w, _ ~~ - King County Hearing Examiner ! --=:=,~=ce----<=• I ~ l • Cf) LU 0 t: .. • ' -~ . . i ~ ;~ I . f It! I s;; I O@ @ • l I I II ,na·nnl ........... ____ . .,,..,_~--~ .. -.... ,-.. _ _.. t - A. B. • I, ' . ® DEPARTMENT OF DEVELOPMENT AND ENVIRONMENTAL SERVICES LAND USE SERVICES DIVISION KING COUNTY, WASHINGTON PRELIMINARY REPORT TO THE HEARING EXAMINER January 22, 2004 -PUBLIC HEARING AT 9:30 AM Hearing Room at ODES 900 Oakesdale Avenue Southwest Renton, WA 98055-1219 PROPOSED REVISION TO THE PRELIMINARY PLAT OF EVENDELL FILE NO: L03RE038 PROPOSED ORDINANCE NO. #2003-0490 SUMMARY OF PROPOSED ACTION: This is a request for major revision of the preliminary approved Plat ofEvendell to allow 70 lots through use of density credit transfer. The 70 lots would mostly range from 3,900 square feet to 6,600 square feet in area. As part of the plat, two recreation areas and two drainage detention areas are proposed. The residence inside the plat will be retained. Access to the lots is proposed via SE I 36'h Street. The west 200 feet of the plat contains only road easement which will be dedicated to King County. The plat layout for 70 lots is identical the original request under the plat file of LO I POO 16. See Attachment l. GENERAL INFORMATION: Owner: Representative: U.S. Land Development Association P.O. Box 22200 Seattle, WA 98122 Michael Romano Centurion Development Services 22617 8'h Dr. SE, Bothell, WA 98021 Phone: 425A86-2563 Facsimile: ( 425) 486-3273 e-mail: rnichael.j.romano@gte.net Location: Lying south of SE 136'" St. between 156'h Ave. SE and 160'h Ave. SE. Section/Township/Range: SE 14-23-05 Parcels# 142305 9022 & 9009 Acreage Plat: Zoning: Number of Lots: Density: Lot Size: Proposed Use: Sewage Disposal: Water Supply: 12.43 acres RA Proposed -70 (approved 46) 5.6 dwellings per acre 3,900 to 6,600 square feet single family City of Renton Water District #90 Fire District: School District: Community Plan: King County Fire District# 25 Renton & Issaquah Newcastle Exhibit No. ___,C.,...,O __ --= Item No. Lo., (ZQ Y Drainage Subbasin: Lower Cedar River King County Permits: Subdivision Received------- King County Hearing El!amlnsr Complete Application Date: October 27, 2003 Threshold Determination: Mitigated Determination ofNonsignificance (MONS) Date of Issuance: December 23, 2002 (Adoption Notice Nov. I 0, 2003) KC Permit Contact: Karen Scharer, Project Manager ll, Current Planning Section, LUSD Phone# 296-71 14 or e-mail at karen.scharer@metrokc.gov MAUN fDl\E IC©lfV ~ C. ' ' HISTORY/BACKGROUND: L03RE038/Evendell Page 2 I. For the preliminary plat of Evendell (LO I POO 16), the Subdivision Technical Committee (STC) of King County has conducted an on-site examination of the subject property. The STC discussed the proposed development with the applicant and clarified technical details of the application to determine the compatibility with applicable King County plans, codes, and other official documents. Under the original plai application, DOES was able to obtain claims submitted to King County for drainage problems and an updated Level 3 drainage report was submitted December 9, 2002. In mid December 2002, the STC determined that there was sufficient information presented to proceed with issuance ofa SEPA TD for the rezone and plat. 2. Alter examiner hearings and a council appeal hearing on the plat and rezone, Ordinance #14695 was approved by the King County Council on July I, 2003 approving the alternative plat design for 46 lots. The Council denied the reclassification to R-6 which would have permitted the plat design with 70 lots without needing density credit transfer. 3. The applicant filed an appeal of the County Council decision on the plat and rezone to the Washington State Superior Court. This case is currently pending court action. 4. This application (L03RE038 -Type 3 permit) is based on existing applicable regulations as of October 27, 2003, which is the date that the plat application/major revision was determined to be complete. As of this date, the applicant supplied DOES with complete documentation necessary to process the application for 70 lots under the existing zone classification of R-4 as a new preliminary plat or as a major revision. 5. As of the writing of this report, the applicant is in the process of obtaining approval ofa lot line adjustment (L03LOO 13) excepting out 26,000 square feet (which includes a second house fronting 156'h Ave SE) from this plat; and, to rectify the discrepancy in legal descriptions regarding the property line with the preliminary plat submittal of Nichols Place. D. THRESHOLD DETERMINATION OF ENVIRONMENTAL SIGNIFICANCE: Pursuant to WAC 197-11-965, on November 10, 2003, King County DOES issued a Notice of Adoption of the SEPA mitigated determination of non-significance originally issued December 23, 2002. DOES had made the determination that the documents submitted and MONS met the needs for environmental review of the current proposal. The responsible official of the Land Use Services Division (LUSD) issued a threshold determination -mitigated determination of non-significance (MONS) for the proposed development on December 23, 2002, pursuant to the State Environmental Policy Act (SEPA), RCW 43 .21 C. This determination was based on the review of the environmental checklist and other pertinent documents, resulting in the conclusion that the proposal would not cause probable significant adverse impacts on the environment with implementation of mitigation for the proposal. Therefore, an environmental impact statement (EIS) was not required prior to proceeding with the review process for development permits. The MONS states: The following mitigation measures shall be attached as conditions of permit issuance. These mitigation measures are consistent with policies, plans, rules, or regulations dcsignalt:d by KCC 20.44.080 as a basis for the exercise of substantive authority and in effect when this threshold determination is issued. Key sources of substantive authority for each mitigation measure are in parentheses; however, other sources of substantive authority may exist but are not expressly listed. E. ' ' A. East Drainage Basin: L03RE038/Evendell Page 3 The 160th Ave SE downstream conveyance system shall be upgraded to provide for the 100-year storm capacity. Downstream driveway culverts/ditches and a cross-culvert under 16(/" Ave. SE shall be improved as follows: Culverts P-117 and P-116 on the west side of 160'" Ave. SE, cross-culvert P-115, and culverts P-114 and P-113 on the east side of J 6(/" Ave. SE shall be improved as needed. The culvert designations are according to the Level 3 Downstream Drainage Analysis by Haozous Engineering dated August 26, 2002. To address a related localized flooding condition, bank and channel stabilization are also required in the unopened right-of-way for 162"d Ave. SE, in the vicinity of the easterly line of Lot 12, Rich Lea Crest (address 16046 SE 142"d Street). It is estimated that stabilizing and re-grading approximately 50 to 100 feet of channel, east of 16046 SE 142"'1 Street, will be adequate to resolve flooding that has occurred in the past location. The culverts and channel described are locatedfrom the south site boundary to a distance of approximately I, 700 feet downstream. Level 2 Flow Control design is required for the proposed stormwater detention facility. A (i1c1or o('safi,t,· o/'5 to 15 fJffCcnt. determined by the design engineer. shall be required for detention storage volumes. B. West Drainage Basin: The storm water detention facilities shall be designed to the Level 3 Flow Control Standard as described in the 1998 King County Surface Water Design Manual (KCSWDM). As an option, Level 2 Flow Control with downstream improvements can be proposed according to Core Requirement 2 of the KCSWDM. The minimum Flow Control Standard shall be level 2 . .4 fi1ctor of safety of 5 to I 5 percent, determined by the design engineer, shall be required for detention storage volumes. [Comprehensive Plan Policies U-109, E-126, F-254 & F-255: RCW 58.17.110) AGENCIES CONTACTED: 1. King County Natural Resources & Parks Division: No response. 2. King County Fire Protection Engineer: Fire protection engineering preliminary approval has been granted as requested. 3. Seattle-King County Health Department: No response. 4. Renton School District: See comments contained in this report. 5. Water District# 90: See Attachment 6. 6. City of Renton: See Attachments 7 and 8. 7. Washington State Department of Ecology: No response. 8. Washington State Department of Fish and Wildlife: No response. 9. Washington State Department of Natural Resources: No response. 10. Washington State Department of Transportation: No response. 11. METRO: No response. 12. Issaquah School District: See comments contained in report and Attachment 5. F. NATURAL ENVIRONMENT: 1. Topography: The site is relatively level with a 20-foot difference in elevation from the north central area to the southwest and to the southeast comers of the site. 2. Soils: Surface soils are found on this site per King County Soil Survey, 1973 include: AgC -Alderwood gravely, sandy loam; 6-15 % slopes. Runoff is slow and the erosion hazard is slight. This soil type has a moderate limitation for low building foundations due to a seasonally G. t . L03RE038/Evendell Page 4 high water table, and severe limitations for septic tank filter fields due to very slow permeability in the substratum. 3. Sensitive Areas: The site has been field checked. There is a Class II Wetland located on the northeast portion of the site according to the LUSD wetland ecologist assigned to review this project. The 17, 162-sq. ft. wetland is classified as a palustrine, forested, seasonally flooded/saturated & palustrine, emergent, seasonally flooded. SE 136'h Street improvements will cause filling of200-sq. ft. wetland. To off-set impacts 400-sq. ft. of mitigation is proposed. Road improvements will impact 6,989-sq. ft. of wetland buffer. An additional 15,495-sq. ft. of buffer is proposed in the NE comer of site to provide mitigation at a ratio greater than 2 to I. Improvements to the downstream drainage system will have to be reviewed to ensure that no wetlands are being drained or flooded as a result, no streams placed in pipes, or no streams damaged by increased flows. Enlarging culverts, if any, in a sensitive area requires a clearing and grading permit. 4. Hydrography: A preliminary June 15, 2001, technical information report was prepared by Haozous Engineering, P.S. on June 15, 2001. Subsequently a Level 3 Downstream Analysis was submitted August 26, 2002 and a Level Three Addendum was submitted December 5, 2002. The site is within the Orting Hills subbasin of the Cedar River watershed. Flooding has occurred in the past along downstream conveyance structures from the site on 1601h Ave. SE, 1561h Ave. SE, and on nearby properties. These drainage issues are documented in the Level Three Downstream Analyses and Addendum and are addressed by SEPA mitigations in the MONS. 5. Vegetation: The westerly 1.5 acres is mostly covered by pasture with some trees central and on the east edge. More than half of the east I !acre area is wooded with a conifer upland forest and primarily Douglas fir. The far south of the parcel is developed with pasture and the north central area has partially been cleared as yard area associated with the home and south central includes deciduous trees and native shrubs. 6. Wildlife: A wildlife study in conjunction with the wetland evaluation and delineation report, was prepared for this site and dated May 15, 200 I. A large variety of small birds and animals were observed on site. Black tail deer and ruffed grouse both "Priority Species" of Washington State were observed. A single "State Candidate" species -the pileated woodpecker -was observed to utilize the forested wetland area along with adjacent upland forested area onsite per page 12 of the report. Much discussion regarding sightings of red-tail hawks occurred during the previous preliminary plat hearing for Evendell in March of 2003, although no nesting sites were documented on the property by the DOES senior ecologist nor the applicant's biologist. As of October 14, 2003 the red-tailed hawk has been deleted off the list ofRaptors of Local Importance under Policy E-I 68 of the Comprehensive Plan (Ordinance 14775). Instead, protection is only afforded for this species in the rural area of King County. According to ODES staff Senior Ecologist, none of the species identified in the applicant's report are required to be protected in the urban designated part of the County where this project lies. The preservation of the wetland and a 50-foot buffer will provide habitat which will provide some level of protection for species local.. NEIGHBORHOOD CHARACTERISTICS: The site is located in the east potential annexation area of Renton. Properties located nearby vary in size from large 5-acre parcels to small urban lots. The neighborhood is rapidly changing from a rural-suburban character to an urbanized area with mostly single family homes and some related services such as schools, a fire station, churches and parks. Developed lots immediately nearby are on septic systems. These lots are approximately 9,000 square feet to 30,000 square feet in size. However, directly north and south of the eastern portion of the site is a 5 and 4 acre tract respectively, each developed with a single-family house. Many of the parcels are currently considered as under utilized within the urban designation. Zoning immediately surrounding of Evendell is R-4. .. L03 RE03 8/Evendell Page 5 The proposed plat of Hamilton Place (L02POO 11) is locaied on property 700 feet north of the site between l 56'h Ave. SE & l 60'h Ave. SE. Lots proposed would average approximately 5,000-sq. ft. each. Transfer of 6 density credits was approved for this plat. The recently platted parcel of"5 Lot Subdivision", LOOP0023 is located southeast off 162"ct Ave. SE and contains 5 lots averaging .9 d.u. 's per acre. Three other applications for preliminary plat approval are currently being processed by ODES. DOES also has held other pre-application meetings for plats in the immediate area. Timing for submittal of further applications is unknown. The City of Renton city limits are approximately 1,300 feet to the west of the site at the southeast corner of the plat of Maplewood. On-Site: The east 11 acres of the site is currently developed with one single family home, detached garage and out buildings. The house is to remain and will be on Lot #52 of the plat. The remaining accessory buildings will be removed. A lot line adjustment is under review and approval will occur prior to final platting of Evendell to revise the boundary and except out the other house on the far west portion of the property abutting l 56'h Ave SE. This most westerly 200 feet next to l 56'h Ave. SE is mostly outside of the plat boundary. Only the access easement area (SE 136 1h Street) is included as part of this plat. 1-1. SUBDIVISION DESIGN FEATURES: I. Lot Pattern and Density: The proposed lot and street layout is in conformance with King County Codes (i.e. KCC 21A and the 1993 King County Road Standards. Density calculations for the plat average 5.6 d.u. 's per acre. The 70 lots ranging from 3,900 square feet to 6,600 square feet. 2. Internal Circulation: Most lots will front onto a public street that provides an internal loop street within the subdivision and exits out to SE 1361h Street. Private access tracts (PAT's) and Joint Use Development Tracts (JUDT's) connect to the public (loop) street will serve a few other lots. The remaining lots on the west side of the plat will front on PA T's & JUDT's off SE I 36'h Street. See the proposed plat layout, Attachment l to this report. 3. Roadway Section: As proposed, SE 1361h Street would be improved with urban improvements along the north & south sides of street frontage between 156'h Ave. SE and 158'h Ave. SE, but without sidewalks on the north side. Between 158'h Ave. SE and 160'h Ave. SE, 136'" St. will be improved with a half street with curb, gutter and sidewalks on the south side. Shoulder improvements with 8-feet wide paving are planned for the right of way on the west side of 160'" Ave. SE that abuts the east boundary of the site. The public loop street serving most lots within the plat will be improved as an urban subaccess street with the access between SE 136 1h St. and the loop (158'h Ave. SE) will be improved as an urban subcollector. Sidewalks will be provided on the outside curve of the loop street. The six J.U.D.T. 'swill each serve two lots and the three P.A.T. 'swill each serve more than three lots. 4. Drainage: The plat is required to comply with the 1998 King County Drainage Manual. A SWM Adjustment (File No. L02V0024) was approved for the subdivision allowing .15 acres of the western subbasin to be added into the eastern subbasin & the western subbasin controlled outflow will be released farther upstream in the ditch system of 156'h Ave. SE. Detention for the west portion of the development will be placed on the southwest corner of the plat and detention for the east portion of the site will be located on the south east corner of the · site. The applicant proposed to address the current severe flooding issues along 160 1h Ave. SE and neighboring properties by upgrading the conveyance system and eliminating constrictions at critical locations. An onsite Level 3 flow control standard (King County's most restrictive I ' L03RE038/Evendell Page 6 release rate) is proposed for the westerly portion of the site flowing to 1561h Ave. SE rather than upgrading the downstream structures as only a small portion of the plat drainage flows west. Also see Section D. of this report regarding the SEPA MDNS drainage improvements. I. TRANSPORTATION PLANS: I. Transportation Plans: The King County Transportation Plan indicates that SE I 36th'h Street is a non-Arterial Road. The King County Nonmotorized Transportation Plan does not designate this roadway for bicycles of equestrian use. The subject subdivision is not in conflict with this Transportation Plan, the King County Regional Trails Plan, nor Nonmotorized Plan. 2. Subdivision Access: The subdivision will gain access from SE 136'h Street with most trips via 156'h Ave SE. A south bound left tum lane from 1561 1, Ave SE will be provided to assure safe access onto SE 136'h Street. SE 136'h St. between 156'h Ave. SE and 158'h Ave. SE will be improved to an urban neighborhood collector standard with curb, gutter and sidewalks on the south side; and, curb and gutters on the north side. At 158 1h Ave. SE to 160'h Ave. SE, this street portion will be improved as a neighborhood collector with urban half street improvements. Nine lots could have direct access to SE 136'h Street, instead, streets and access tracts have been sized to provide alternative access to these lots. The remaining 61 lots will front on the internal loop or other private access tracts. 3. Traffic Generation: It is expected that approximately 700 vehicle trips per day will be generated with full development of the proposed subdivision. This calculation includes service vehicles (i.e., mail delivery, garbage pick-up, school bus) which may currently serve this neighborhood, as well as work trips, shopping, etc. 4. Adequacy of Arterial Roads: This proposal has been reviewed under the criteria in King County Code 14. 70, Transportation Concurrency Management; 14.80, Intersection Standards; and King County Code 14.75; Mitigation Payment System. a. King County Code 14.70 -Transportation Concurrency Management: The Transportation Certificate of Concurrency indicates that transportation improvements or strategies will be in place at the time of development, or that a financial commitment is in place to complete the improvements or strategies within six (6) years, according to RCW 36.70A.070(6). The KC Department of Transportation determined that the certificate originally issued in 2001 for 75 lots and submitted for the rezone and plat is still valid and may be used to satisfy the submittal requirements for this major revision of the plat (See Attachment 9). b. King County Code 14.80 -Intersection Standards: The existing arterial system will accommodate the increased traffic volume generated by this proposal. c. King County Code 14.75 -Mitigation Payment System: King County Code 14.75, Mitigation Payment System (MPS), requires the payment of a traffic impact mitigation fee (MPS fee) and an administration fee for each single family residential lot or unit created. MPS fees are determined by the zone in which the site is located. This site is in Zone 452 per the MPS/Quartersection list. MPS fees may be paid at the time of final plat recording, or deferred until building permits are issued. The amount of the fee will be determined by the applicable fee ordinance at the time the fee is collected. J. PUBLIC SERVICES: I. Schools: This proposal has been reviewed under RCW 58.17 .110 and King County Code 21 A.28 (School Adequacy). a. School Facilities: The subject subdivision will be served by the Renton School District (Maplewood Heights, McKnight, & Hazen High schools) and Issaquah School District (see Attachment 5 of this report for Issaquah schools serving the site). , . L03RE038/Evendell Page 7 b. School Capacity: The Renton School Board has not adopted capacity figures which indicate their ability to accommodate additional students. The district therefore anticipates adequate capacity to accommodate the students generated by this proposal. The Issaquah School Board has adopted capacity figures which indicate their ability to accommodate additional students. The capacity figures for 2004 through 2008 show at minimum an excess capacity of 779 per the 2002 Capital Facilities Plan for the District. The figures reveal the district has adequate capacity to accommodate the anticipated students generated by this proposal c. School Impact Fees: No ordinance requiring impact fees for the Renton School District has been adopted. The Issaquah School District has adopted a fee of $4,6 I 7 for each new single family residential unit. A total of 60 dwellings would be added to the Issaquah District. d. School Access: The Renton School District has indicated that future students from this subdivision will be bussed from the intersection of SE 136'h St. and 1561h Ave. SE. The Issaquah District has provided revised information since the preliminary Evendell plat hearing in March of 2003. The current bus stop for junior high and high school students is located at the intersection of SE 1301h Street with l 62"d Ave SE. Bussing occurs at present due to lack of safe walkways to the schools. It is the District's position that with the influx of new students in the area as a result of new homes being built, these urban plats should provide acceptable walking facilities to schools the local schools. The local Issaquah schools serving this property are all within one mile of the plat of Evendell. The school District has submitted updated information indicating that the existing bus stoy for Liberty High School and Maywood Middle School is at SE 1301 1, Street and I 62" Ave. SE. Currently with the area underdeveloped and with poor pedestrian connections, bus service to students within one mile of the schools has been provided by the district. The district views the bus service as temporary only and requests that with new nearby housing developments, walking access to schools be provided. The applicant for Liberty Grove and Liberty Grove Contiguous (plats submitted to the north and east) provided infom1ation clarifying which streets that have been improved with some type of pedestrian walkways. A narrative indicated that they did not see that a walkway system to Liberty High School as feasible. ODES staff has taken exception to this analysis and finds that a walkway is feasible along SE 135th Street between 1601 h Ave SE and 1661h Ave. SE. (then south on 166'h Ave SE one block to the school). This location of a walkway would provide a high level of visibility of the students walking from nearby residences and students would only need to walk past one wooded parcel on the south side of SE 135•h Street. Until other future development of plats to the south provide improvements for a walking access to Maywood Middle School, ODES staff understands that the District would likely provide a bus stop at 1361h Street and I 601h Ave. SE for the middle school. Because Issaquah has for a number of years bused both high school and middle school students on the same bus, some limited bus service for the high school will in the interim likely continue, as well. 2. Parks and Recreation Space: The nearest public park is located on the south west comer of 152"" Ave. SE and SE 136 1h St. The applicant has proposed on-site recreation including two recreation areas, Tract N on the west end and tracts L & M on the southeast area of the plat. The details of improvements will be designed and submitted for approval prior to final plat. KCC 21 A.14 requires subdivisions in the UR and R zone classifications to either provide on-site recreation space or pay a fee to the Parks Division for establishment and maintenance of neighborhood parks. The required recreation area equals 27,300 sq. ft. Tract L will contain 15,088 sq. ft. and the remaining 12,212 sq. ft. required will be provided within the two drainage tracts, Tracts M & N. ' . L03RE038/Evendell Page 8 Per KCC 21 A.14.180 E, one tot lot and three additional playground/recreational facilities will be required. The applicant plans to locate one recreation feature on Tract N and other two features designed with the tot lot as part of tracts Land M. The storm/recreation tracts will be required to comply with standards of KCC 2 IA.14.180. Specifically, Tracts Land M will be required to be recorded as one tract per KCC 2 lA.14.180 G. 3. Fire Protection: The Certificate of Water Availability from W. D. 90 indicates that water is presently available to the site in sufficient quantity to satisfy King County Fire Flow Standards. Prior to final recording of the plat, the water service facilities must be reviewed and approved per King County Fire Flow Standards. · K. UTILITIES: I. Sewage Disposal: A Certificate of Sewer Availability, dated June 15, 2001 indicates the city's capability to serve the proposed development with a time extension to the certificate was issued November 26, 2003. A sewage pump station will be constructed on the southeast corner of the plat as the property currently can not be served by gravity flow. By providing a pump station, approximately 37 acres in the immediate area will sewer available. The existing sewer line will be extended east along SE l 36'h Street to the subject property to provide connection to Renton' s sewer system. 2. Water Supply: The applicant proposes to serve the subject subdivision with water from Water District 90. A Certificate of Water Availability, dated September 18, 2003, indicates this district's capability to serve the proposed development. L. COMPREHENSIVE AND COMMUNITY PLAN: I. Comprehensive Plan 2000 Land Use Map: This proposal is governed by the 2000 King County Comprehensive Plan with Land Use Map that designates this area as "Urban Residential, 4-12 dwellings per acre". Comment: The proposal would yield an overall density of 5.6 dwellings per acre. 2. Comprehensive Plan Policy: U-122 King County supports increases in urban residential density through a rezone or a proposal to increase density through.the density transfer or density incentive programs when the proposal will help resolve traffic, sewer, water, parks or open space deficiencies in the immediate neighborhood. Comment: The Zoning Code does not specify that any special thresholds or requirements beyond SEP A and platting requirements for providing adequate services to support the development that is proposed. In this case, the development will provide extensions of sewer and a pump station with the ability to serve a 3 7 acre area providing future opportunity for sewer hook-up by other nearby property owners. An east west connection between 156'h Ave. SE and 160'h Ave. SE will be provided serving the neighborhood with an alternative neighborhood access connection. 156th Ave SE will be improved with a southbound left tum lane onto SE I 36'h Street. Additionally, the following the road improvements proposed: SE 136TH ST. New Right-of Way SE 136TH ST Right-of Way Improvements & including Curb, Gutter, & Sidewalks SE 136TH ST Right-of Way Improvements & including Curb, &Gutter (north side) TH 160 A VE. SE Improvement including 8 Foot Shoulder 1,250 feet 1,250 feet 625 feet 800 feet I . ' ' L03RE038/Evendell Page 9 3. Under the 2000 Comprehensive Plan and Ord.# 14049, both effective as of March 12, 2001, all new residential development in the urban area must be served by sewer. Providing sewer to this and other properties in the immediate area will require a sewage pump station to facilitate new residential development. As a result, development of the subject property and a pump station will help to make possible new homes on other properties nearby. M. PLAT STATUTES/CODES: I. 2. 3. 4. 5. If approved with the recommended conditions in this report, the proposed development will comply with the requirements of the County and State Platting Codes and Statutes, and the lots in the proposed subdivision will comply with the minimum dimensional requirements of the zone district. King County Road Standards Section 1.03 -Responsibility to Provide Roadway Improvements: A. Any land development which will impact the service level, safety, or operational efficiency of serving roads or is required by other County code or ordinance to improve such roads shall improve those roads in accordance with these Standards. The extent of off-site improvements to serving roads shall be based on an assessment of the impacts of the proposed land development by the Reviewing Agency ... RCW 58.17 .110 Approval or disapproval of subdivision and dedication-Factors to be considered-Conditions for approval-Finding-Release from damages. (I) The city, town, or county legislative body shall inquire into the public use and interest proposed to be served by the establishment of the subdivision and dedication. It shall determine: a) If appropriate provisions are made for, but not limited to, the public health, safety and general welfare, for open spaces, drainage ways, streets or roads, alleys, other public ways, transit stops, potable water supplies, sanitary wastes, parks and recreation, playgrounds, schools and schoolgrounds, and shall consider all other relevant facts, including sidewalks and other planning features that assure safe walking conditions for students who only walk to and from school; and (b) whether the' public interest will be served by the subdivision and dedication. (2) A proposed subdivision and dedication shall not be approved unless the city, Lown, or county legislative body makes written findings that: (a) Appropriate provisions are made for the public health, safety, and general welfare and for such open spaces, drainage ways, streets or roads, alleys, other public ways, transit stops, potable water supplies, sanitary wastes, parks and recreation, playgrounds, schools and schoolgrounds and all other relevant facts, including sidewalks and other planning features that assure safe walking conditions for students who only walk to and from school; and (b) the public use and interest will be served by the platting of such subdivision and dedication. If it finds that the proposed subdivision and dedication make such appropriate provisions and .that the public use and interest will be served, then the legislative body shall approve the proposed subdivision and dedication ... KCC 20.24.180 Examiner findings. When the examiner renders a decision or recommendation, he or she shall make and enter findings of fact and conclusions from the record which support the decision and the findings and conclusions shall set forth and demonstrate the manner in which the decision or recommendation is consistent with, carries out and helps implement applicable state laws and regulations and the regulations, policies, objectives and goals of the comprehensive plan, subarea or community plans, the zoning code, the land segregation code and other official laws, policies and objectives of King County, and that the recommendation or decision will not be unreasonably incompatible with or detrimental to affected properties and the general public, KCC20.24.195 Additional examiner findings -preliminary plats. When the examiner makes a decision regarding an application for a proposed preliminary plat, the decision shall include additional findings as to whether: A. Appropriate provisions are made for the public health, safety, and general welfare and for such open spaces, drainage ways, streets or roads, alleys, other public ways, transit ' . L03RE038/Evendell Page 10 stops, potable water supplies, sanitary wastes, parks and recreation, playgrounds, schools and school grounds and all other relevant facts, including sidewalks and other planning features that assure safe walking conditions for students who only walk to and from school; and B. The public use and interest will be served by the platting of such subdivision and dedication. (Ord. 12196 § 38, 1996: Ord. 9544 § 16, 1990). 6. 21A.12.030 Densities and dimensions -residential zones. A. Densities and dimensions -residential zones. Base Density: 4 dwelling units per acre Maximum Density: 6 dwelling units per acre Minimum Density: 85% of base density B. Development conditions. 1. This maximum density may be achieved only through the application of residential density incentives in accordance with ... transfers of development rights in accordance with K.C.C. chapter 21A.37 .. . 7. 21A.37.030 Transfer of development rights (TDR) program -receiving sites. A. Receiving sites shall be: I. King County unincorporated urban sites, ... zoned R-4 .... The sites may also be within potential annexation areas established under the countywide planning policies; or ... B. Except as provided in this chapter development of an unincorporated King County receiving site shall remain subject to all zoning code provisions for the base zone, except TDR receiving site developments shall comply with dimensional standards of the zone with a base density most closely comparable to the total approved density of the TDR receiving site development. C. An unincorporated King County receiving site may accept development rights from one or more sending sites, up to the maximum density permitted under K.C.C. 2 lA.12.030 and 2 lA.12.040. N. ANAL YSJS / CONCLUSIONS: l. Pursuant to the State Environmental Policy Act (SEPA), RCW 43.21C, the responsible official of the Land Use Services Division (LUSD) issued a threshold determination - mitigated determination of non-significance (MONS) for the proposed rezone and plat of Evendell on December 23, 2002. This determination was based on the review of the environmental checklist and other pertinent documents, resulting in the conclusion that with implementation of mitigation, the proposal would not cause probable significant adverse impacts on the environment. A Notice of Adoption was issued to the MONS on November 10, 2003 after DOES determined that the project requested had been reviewed under the previous SEPA TD and circumstances had not significantly changed to require issuance ofa new TD. 2. Potential adverse impacts to environmentally sensitive areas on site and environmental constraints in the vicinity will be adequately mitigated through the King County Code and SEPA. 3. King County has notified the City of Renton and other local agencies of the request and for major revision. The City concurs that the density proposed is consistent with the City of Renton Comprehensive Plan for this Potential Annexation Area. The density does not exceed six dwellings per acre. The City did express concern with the road improvement standards to be used. At this time an interlocal agreement has not been signed between the two jurisdictions by which King County would alternatively recognize City of Renton standards for street improvements. 4. Comprehensive Plan Policy U-122 supports increases in urban residential density through density credit transfer when the proposal will help resolve traffic, sewer, water, parks or open space deficiencies in the immediate neighborhood. In the instant situation, the Evendell application will provide neighborhood infrastructure benefits in the form ofright- of-way dedication; and road improvements on 156 1h Avenue Southeast, Southeast 136 1 h . ' L03 RE03 8/Evendel I Page 11 Street and 160 1 h Avenue Southeast. It is noted that KCC 21A.37-transfer of density does not require an applicant to "benefit a neighborhood" beyond the basic needs for implementation and approval of the plat. The SE 136 1 h St. east-west connection between 156 11t Ave. SE and 160 1 h Ave. SE is an important connection, providing circulation needed to serve the neighborhood in the future. Currently the only east west access between 1561 h Ave. SE and 160 1 h Ave. SE is via SE 1281 1, St. approximately 2,500 feet to the north and SE 144 1h St. approximately 1,900 feet south of this plat. DOES and DOT staff do not anticipate others outside of the neighborhood will use the new connection as a cut through route due to the signal and tum lanes at the, intersection of SE l 28'h St.. and 1561h Ave. SE. · Neighborhood circulation is important in providing access for neighbor to neighbor trips, service vehicles, emergency vehicles, school bus routes, and school walking routes without using the arterial road system or long routes. SE I 28th St is designated as a principal arterial. Per the King County Road Standards, Section 2.02, the function of a principal aiterial is: "Inter-community highways connecting largest community centers and facilities." The function is not to provide a connection between neighborhoods. Section 2.03 of the King County Road Standards describes the function of several Residential Access Streets to provide circulation within neighborhoods. Arterial routes should be preserved to serve the longer distance trips between col1ll1lunities. Given rulings of the examiner relative to providing circulation within neighborhoods (see L99P3013), it is unlikely that another east-west connection would be built along this corridor as a condition ofa future plat. Further, without the offer of this improvement as part of the 70-lot plat approval, this connection may ne~er be built unless the county chooses to make it a priority as part of the capital improvement program. The applicant will extend the potential sewer service area to encompass approximately 37 acres north and east of the plat with construct a sewer lift station. These are significant infrastructure improvements that benefit the neighborhood as it converts to urban densities. 5. The subject subdivision will comply with the goals and objectives of the King County Comprehensive Plan and will comply with the requirements of the Subdivision and Zoning Codes and other official land use controls of King County, based on the recommendation below conditions for final plat approval. 0. RECOMMENDATIONS: Grant preliminary approval of the May 19, 2003 major plat revision to the preliminary plat ofEvendell, subject to the following conditions of final approval: 1. Compliance with all platting provisions of Title 19 of the King County Code. 2. All persons having an ownership interest in the subject property shall sign on the face of the final plat a dedication which includes the language set forth in King County Council Motion No. 5952. 3. The plat shall comply with the base density (and minimum density) requirements of the R-4 zone classification. All lots shall meet the minimum dimensional requirements of the R-4 zone classification or shall be as shown on the face of the approved preliminary plat, whichever is larger, except that minor revisions to the plat which do not result in substantial changes may be approved at the discretion of the Department of Development and Environmental Services. 4. All construction and upgrading of public and private roads shall be done in accordance with the King County Road Standards established and adopted by Ordinance No. 11187, as amended (1993 KCRS). ' ' L03 RE03 8/Evendel I Page 12 5. A Boundary Line Adjustment (BLA) shall be completed to except out that portion of the rezone area on the far west that is not part of the Evendell plat prior to final plat and resolve boundary issues with the property to the south (Nichols Place). 6. The applicant must obtain the approval of the King County Fire Protection Engineer for the adequacy of the fire hydrant, water main, and fire flow standards of Chapter 17.08 of the King County Code. Joint Use Development Tract H as shown on the plat (Attachment 2) will provide access to Lots 28 and 29. Additionally, it is a future emergency vehicle access tract to and from 1601h Ave. SE, which the applicant proposes to create in response to concerns raised by the City of Renton. The applicant shall include proposed protocols for the construction and maintenance of Tract H, plus any related plat notes, with its engineering plans submittal meeting the following standards: The emergency vehicle access to 1601h Ave. SE shall have a minimum driving surface width of 20 feet, with an all-weather surface capable of supporting 25 tons. Any locking device shall be approved by the Renton Fire Department (KCFD # 25). Chains, cable or bollards will not be permitted. The gate shall be located at least 50 feet from 1601 h Ave. SE to allow space for fire apparatus to stop while opening the gate or to wait before entering the public roadway. If these conditions are not met any future residence constructed on Lots 28, 29 and 30 will have to be sprinklered NFPA 13D. These conditions must be satisfied, unless an alternative is approved by the King County Fire Protection Engineer and Renton Fire Department (KCFD # 25) 7. Final plat approval shall require full compliance with the drainage provisions set forth in King County Code 9.04. Compliance may result in reducing the number and/or location of lots as shown on the preliminary approved plat. Preliminary review has identified the following conditions of approval which represent portions of the drainage requirements. All other applicable requirements in KCC 9.04 and the Surface Water Design Manual (SWDM) must also be satisfied during engineering and final review. a. Drainage plans and analysis shall comply with the 1998 King County Surface Water Design Manual and applicable updates adopted by King County. ODES approval of the drainage and roadway plans is required prior to any construction. b. Current standard plan notes and ESC notes, as established by DOES Engineering Review, shall be shown on the engineering plans. c. The following note shall be shown on the final recorded plat: All building downspouts, footing drains, and drains from all impervious surfaces such as patios and driveways shall be connected to the permanent storm drain outlet as shown on the approved construction drawings # on file with DDES and/or the King County Department of Transportation. This plan shall be submitted with the application of any building permit. All connections of the drains must be constructed and approved prior to the final building inspection approval. For those lots that are designated for individual lot infiltration systems, the systems shall be constructed at the time of the building permit and shall comply with plans on file." d. The stormwater detention design shall comply with the Level 2 Flow Control requirements per the 1998 King County Surface Water Design Manual (KCSWDM). e. The storm water control facility shall be located in a separate tract and dedicated to King County unless portions of the drainage tract are used for required recreation space in accordance with KCC 21A.14.180. 8. Drainage adjustment L02V0024 is approved for this project. All conditions of approval for this adjustment shall be met upon submittal of the engineering plans. See Attachment 9. L03RE038/Evendell Page 13 9. A drainage easement for the conveyance from the Tract N drainage facility to 1561h Ave SE shall be provided upon engineering plan submittal. I 0. The following road improvements are required to be constructed according to the 1993 King County Road Standards (KCRS): a. The internal access road from SE I 36'h St. to the beginning of the internal loop road shall be improved to the urban subcollector standard. b. The internal loop road shall be improved to the urban subaccess road standard with sidewalks on the outside frontage of the loop road. c. SE 136'h St. FRONTAGE/OFFSITE--The following SE 1361h St. improvement shall be designed in general conformance with the Preliminary Road Improvement Plan received 3/26/2002 with the Plat ofEvendell: The frontage from 158 1h Ave NE to 1601h Ave NE shall be improved to the urban one-half street standard. Eighteen feet of additional right-of way shall be dedicated for this improvement. SE 136'h St. frontage from the west side of J.U.D.T. 'A' boundary to 158 1h Ave NE shall be improved to the urban neighborhood collector standard; EXCEPT that no sidewalk construction is required on the north side. Twenty feet of additional right-of-way shall be dedicated for this improvement. SE 1361h St. from 1561h Ave SE to J.U.D.T. 'A' shall be improved to the urban neighborhood collector standard; EXCEPT that no sidewalk construction is required on the north side. Twenty-six feet of additional right-of-way shall be provided for this improvement. An additional 25-foot right-of-way radius is required at the southeast comer of l 56'h Ave SE and SE 1361h St. d. 160'h Ave SE FRONTAGE: The 160'h Ave SE frontage shall be improved with an 8-foot paved shoulder on the west side. Adequate provisions for road drainage shall be provided. e. Tracts A,C,F,G,H, and l shall be improved to the joint use driveway standard per Section 3.01 of the KCRS. Tract A shall include an easement to King County for the maintenance of the Tract N drainage facility. Tract A shall be owned and maintained by the owners of Lots I and 2. f. Tracts B, D and E shall be improved to the private access tract standard per Section 2.09 of the KCRS. g. The Applicant shall revise the channelization that has been constructed in conjunction with the plat of Highland Estates (LOOP0009). These modifications to the channelization shall incorporate a revision of the current proposed painted 'island' to a southbound left turn lane with at least 60 feet of storage for left turning vehicles to (a) encourage the use of 156th Avenue SE in lieu of 158th Avenue SE and 160th Avenue SE, and (b) mitigate the potential deficient condition that would from southbound left turning vehicles to make legal southbound left turns from the southbound through lane, or, use the painted island as a deceleration and refuge area while waiting for gaps in northbound traffic. Channelization and illumination plans must be submitted to King County Traffic Engineering Section for review and approval of the turn lane channelization. Modifications to the above road conditions may be considered according to the variance provisions in Section 1.08 of the KCRS. 11. There shall be no direct vehicular access to or from 1601h Ave. SE from those lots, which abut this street. A note to this effect shall appear on the engineering plans and final plat. ,, ' L03RE038/Evendell Page 14 12. All utilities within proposed rights-of-way must be included within a franchise approved by the King County Council prior to final plat recording. 13. The applicant or subsequent owner shall comply with King County Code 14.75, Mitigation Payment System (MPS), by paying the required MPS fee and administration fee as determined by the applicable fee ordinance. The applicant has the option to either: (I) pay the MPS fee at final plat recording, or (2) pay the MPS fee at the time of building permit issuance. If the first option is chosen, the fee paid shall be the fee in effect at the time of plat application and a note shall be placed on the face of the plat that reads, "All fees required by King County Code 14.75, Mitigation Payment System (MPS), have been paid." If the second option is chosen, the fee paid shall be the amount in effect as of the date of building permit application. 14. The proposed subdivision shall comply with the Sensitive Areas Code as outlined in KCC 21 A.24. Preliminary plat review has identified the following specific requirements that apply to this project. All other applicable requirements from KCC 21A.24 shall also be addressed by the applicant. a. This site contains a Class 2 wetland. The majority of the wetland will be protected from alteration during and after construction, with a 50-foot wide buffer around the wetland boundary. An additional 15-foot building setback is required beyond the edge of the buffer. b. A maximum of 200 square feet of wetland will be filled for construction of SE 136th Street. Mitigation shall consist of at least 400 square feet of wetland enhancement to degraded portions of the existing wetland. c. Road improvements for SE l36ih Street and 160th Avenue SE will eliminate 6,989 square feet of wetland buffer. Mitigation shall consist of providing at least an equivalent amount of additional buffer in the northeast portion of the site. Reduced impact will result in reduced mitigation. d. The proposed sewer main within the SE 136th Street right-of-way will intrude into the wetland buffer along with the road improvements. In order to protect wetland hydrology: (I) the sewer line shall be installed during the dry season (June through September), and (2) the design shall incorporate the use of pipe bed dams ofbentonite or other material at intervals to preclude draining possible subsurface water flows through the gravel pipe bedding. e. Downstream drainage improvements to existing culverts and stormwater conveyances required through the SEPA MONS shall cause no adverse alteration to existing wetlands or streams in the vicinity of the drainage improvements. f. Critical Areas staff shall review engineering plans for the plat and sewer main for conformance with these requirements. 15. The following note shall be shown on the final engineering plan and recorded plat: RESTRICTIONS FOR SENSITIVE AREA TRACTS AND SENSITIVE AREAS AND BUFFERS Dedication of a sensitive area tract/sensitive area and buffer conveys to the public a beneficial interest in the land within the tract/sensitive area and buffer. This interest includes the preservation of native vegetation for all purposes that benefit the public health, safety and welfare, including control of surface water and erosion, maintenance of slope stability, and protection of plant and animal habitat. The sensitive area tract/sensitive area and buffer imposes upon all present and future owners and occupiers of the land subject to the tract/sensitive area and buffer the obligation, enforceable on behalf of the public by King County, to leave undisturbed all trees and other vegetation within the tract/sensitive area and buffer. The vegetation within the tract/sensitive area and buffer may not be cut, pruned, covered by fill, removed or damaged without approval L03RE038/Evendell Page 15 in writing from the King County Department of Development and Environmental Services or its successor agency, unless otherwise provided by law. The common boundary between the tract/sensitive area and buffer and the area of development activity must be marked or otherwise flagged to the satisfaction of King County prior to any clearing, grading, building construction or other development activity on a lot subject to the sensitive area tract/sensitive area and buffer. The required marking or flagging shall remain in place until all development proposal activities in the vicinity of the sensitive area are completed. No building foundations are allowed beyond the required 15-foot building setback line, unless otherwise provided by law. 16. Suitable recreation space shall be provided consistent with the requirements KCC 21 A.14.180 and KCC 2 lA.14.190 in providing sport court[s], children's play equipment, picnic table[ s], benches, etc .. a. A detailed recreation space plan (i.e., landscape specs, equipment specs, etc.) shall be submitted for review and approval by DDES and King County Parks prior to or concurrent with the submittal of the engineering plans. This plan shall comply with Ordinance# 14045. b. A performance bond for recreation space improvements shall be posted prior to recording of the plat. 17. A homeowners' association or other workable organization shall be established to the satisfaction ofDDES which provides for the ownership and continued maintenance of the recreation, open space and/or sensitive area tract(s). 18. Street trees shall be included in the design of all road improvements, and shall comply with Section 5.03 of the KCRS and KCC 2lA.16.050: a. Trees shall be planted at a rate of one tree for every 40 feet of frontage along all roads. Spacing may be modified to accommodate sight distance requirements for driveways and intersections. b. Trees shall be located within the street right-of-way and planted in accordance with Drawing No. 5-009 of the l 993 King County Road Standards, unless King County Department of Transportation determines that trees should not be located in t)le street right-of-way. c. If King County determines that the required street trees should not be located within the right-of-way, they shall be located no more than 20 feet from the street right-of-way line. d. The trees shall be owned and maintained by the abutting lot owners or the homeowners association or other workable organization unless the County has adopted a maintenance program. Ownership and maintenance shall be noted on the face of the final recorded plat. e. The species of trees shall be approved by DDES if located within the right-of-way, and shall not include poplar, cottonwood, soft maples, gum, any fruit-bearing trees, or any other tree or shrub whose roots are likely to obstruct sanitary or storm sewers, or that is not compatible with overhead utility lines. f. The applicant shall submit a street tree plan and bond quantity sheet for review and approval by DDES prior to engineering plan approval. g. The street trees must be installed and inspected, or a performance bond posted prior to recording of the plat. If a performance bond is posted, the street trees must be installed and inspected within one year of recording of the plat. At the time of inspection, if the trees are found to be installed per the approved plan, a L03RE038/Evendell Page 16 maintenance bond must be submitted or the performance bond replaced with a maintenance bond, and held for one year. After one year, the maintenance bond may be released after ODES has completed a second inspection and determined that the trees have been kept healthy and thriving. A landscape inspection fee shall also be submitted prior to plat recording. The inspection fee is subject to change based on current County fees. 19. The following have been established by SEPA as necessary requirements to mitigate the adverse environmental impacts of this development. The applicants shall demonstrate compliance with these items prior to final approval. a. East Drainage Basin: The 160th Ave SE downstream conveyance system shall be upgraded to provide for the 100-year storm capacity. Downstream driveway culverts/ditches and a cross-culvert under 160'h Ave. SE shall be improved as follows: Culverts P-117 and P-116 on the west side of 1601h Ave. SE, cross-culvert P-115, and culverts P-114 and P-113 on the east side of 1601h Ave. SE shall be improved as needed. The culvert designations are according to the Level 3 Downstream Drainage Analysis by Haozous Engineering dated August 26, 2002. Tu addrc,s a rdated lucalized flooding condition, bank and channel stabilization are also required in the unopened right-of-way for 162nd Ave. SE, in the vicinity of the easterly line of Lot 12, Rich Lea Crest (address 16046 SE 142nd Street). It is estimated that stabilizing and re-grading approximately 50 to I 00 feet of channel, east of 16046 SE 142"d Street, will be adequate to resolve flooding that has occurred in the past location. The culverts and channel described are located from the south site boundary to a distance of approximately I, 700 feet downstream. Level 2 Flow Control design is required for the proposed stormwater detention facility. A f'actur uf ,af'ety of 5 to 15 percent, determined by the design engineer, shall be required for detention storage volumes. b. West Drainage Basin: The stormwater detention facilities shall be designed to the Level 3 Flow Co1,1trol Standard as described in the 1998 King County Surface Water Design Manual (KCSWDM). As an option, Level 2 Flow Control with downstream improvements can be proposed according to Core Requirement 2 of the KCSWDM. The minimum Flow Control Standard shall be Level 2. A factor of safety of 5 to 15 percent, determined by the design engineer, shall be required for detention storage volumes. School Mitigation Fees 20. Lots within this subdivision east of l 58'h Ave. SE are subject to King County Code 2 IA.43, which imposes impact fees to fund school system improvements needed to serve new development. As a condition of final approval, fifty percent (50%) of the impact fees due for the plat shall be assessed and collected immediately prior to recording, using the fee schedules in effect when the plat receives final approval. The balance of the assessed fee shall be allocated evenly to the dwelling units in the plat and shall be collected prior to building permit issuance. School Walkways 21. A pedestrian access easement between 158 1h Place SE and 1601h Ave. SE shall be provided over either Tracts H or L (Tracts as shown on Exhibit 7a of the preliminary plat hearing for Evendell, LO 1 POO 16). The easement shall have a minimum 10 foot width and be improved with a 5 foot wide paved surface. L03RE038/Evendell Page 17 22. The applicant shall construct an off-site walkway to Liberty High school from the site. The walkway shall be constructed within the right-of-way from 160th Ave SE, east along SE 135th St. to 166th Ave SE, and south to Liberty High School at SE 136th St. The walkway shall be designed and constructed in accordance with the 1993 King County Road Standards and shown on the engineering plans for ODES review and approval. OTHER CONSIDERATIONS: l. The subdivision shall conform to KCC 16.82 relating to grading on private property. 2. Development of the subject property may require registration with the Washington State Department of Licensing, Real Estate Division. 3. Preliminary approval of this application does not limit the applicant's responsibility to obtain any required permit or license from the State or other regulatory body. This may include, but is not limited to the following: a. Forest Practice Permit from the Washington State Dept. of Natural Resources. b. National Pollutant Discharge Elimination System (NPDES) Permit from WSDOE. c. Water Quality Modification Permit from WSDOE. d. Water Quality Certification (401) Permit from U.S. Army Corps of Engineers REPORT ATTACHMENTS: I. 70 Lot Plat Layout 2. Density Calculations 3. Intent to sell and purchase Density Credits 4. SEPA Adoption Notice 5. Issaquah School District 6. Certificate of Water Availability 7. City of Renton, November 19, 2003 Letter 8. City of Renton, November 26, 2003 Sewer Extension Letter 9. Transportation Concurrency (e-mail & Certificate# 01305) 10. SWM Adjustment Approval, L02V0024 TRANSMITTED TO PARTIES LISTED HEREAFTER: 4 CREEKS UAC, ATTN: CLAUDIA DONNELLY PO BOX 3501 RENTON, WA 98056 BAKER, SCOTT 0., 018 47TH AVE NE SEATTLE, WA 98115 BORBA, GREG, CURRENT PLANNING SUPERVISOR DOES I LUSD MS: OAK -DE -0100 BRENDEN, MARSHALL, 18225 SE 128TH RENTON, WA 98059 BRYANT, RONDA, 15406 SE 136TH ST. RENTON, WA 98059 CARLSON, MARILYN, 13616 156TH AVENUE SE RENTON, WA 98059 CASEY, LAURA, WETLAND REVIEW DOES/ LUSD MS: OAK -DE -0100 CITY OF RENTON, ATTN: REBECCA LIND 1055 SOUTH GRADY WAY RENTON, WA 98055 CLAUSSEN.KIM. SR. PLAT PLANNER ODES/ CPLN MS: OAK -DE -0100 COFFIN, RONALD, 16015 SE 135TH PLACE RENTON, WA 98059-6828 COOKE. MICHAEL RAE, 13125 158TH AVE SE RENTON, WA 98058 COSTELLO, MARK, 13012 158TH AVE SE RENTON, WA 98059 DAY. SHIRLEY. 14412 167TH PLACE SE RENTON, WA 98059 DORST AD, ROGER, EVERGREEN EAST REALTY PO BOX 375 REDMOND, WA 98073 GRAVES, KATHY, 13020 160TH AVE SE RENTON, WA 98059 HAGERMAN, MICHELLE, 13710 156TH AVE SE RENTON, WA 98059 HANSON, STEPHEN & YVONNE, 15611 SE 138TH PLACE RENTON, WA 98059 HAOZOUS ENGINEERING INC, ROBERT DARROW 15428 45TH CT MUKILTEO, WA 98275 HARBOUR HOMES. KURT WILSON 1010 S. 336TH ST., SUITE #305 FEDERAL WAY, WA 98003 HECKERT, MARK, HABITAT TECHNOLOGIES 606 E. MAIN ST. PUYALLUP, WA 98371-1088 HEMNES, VALERIE, 15627 SE 139TH PLACE RENTON, WA 98058 HIGH, VICTOR & GWENDOLYN, 13405 158TH AVENUE SE RENTON, WA 98059 HILL, EDWARD, JUNE & KRISTY, 13527 -156TH AVENUE SE RENTON, WA 98059 HILTON, EDWARD & NANCY, 13414 -158TH AVENUE SE RENTON, WA 98059 HUGHES, KURT, 19112 NE 146TH WAY WOODINVILLE, WA 98072-6361 JAQUES, FRED AND HELGA, 13114 158TH AVENUE SE RENTON, WA 98059 JOHNSTON, LEONARD J., 16016 SE 135r" RENTON, WA 98059 KAZELE, DIANA, 15657 SE 137TH PL. RENTON, WA 98059 . ', L03RE038/Evendell KC EXECUTIVE HORSE COUNCIL, ELEANOR MOON 12230 NE 61 8r KIRKLAND, WA 98033 KEZELE, DON, 15657 SE 137TH PLACE RENTON WA 98059 KOLOUSKOVA,DUANA, JOHNS MONROE MITSUNGA PLLC 1500 114TH AVE SE, #102 BELLEVUE, WA 98004 LANGLEY, KRISTEN, LAND USE TRAFFIC DDES / CPLN MS: OAK -DE-0100 LEE, JOANN, 13802 160TH AVENUE SE RENTON, WA 98059 LEX, TIM & GINA, 13116 158TH AVE SE RENTON, WA 98059 LYMAN, STEVE, 14505 -160TH AVENUE SE RENTON, WA 98059 MARCY,JERRY, POSTOFFICEBOX575 SEATTLE, WA 98111 MARTIN, FRED & GLORIA, 13019 160TH AVE SE RENTON, WA 98059 MCDOUGAL, JIM, 14502 167TH PL SE RENTON, WA 98059 , MOKlN, BILL, 14404162NDAVENUESE RENTON, WA 98059 , MUHICH, STEVEN & PERI, 13420 160TH AVENUE SE RENTON, WA 98059 NIPERT, SALLY, 14004 156TH AVE SE RENTON, WA 98059 Page 18 NORRIS, GARY, GARY STRUTHERS & ASSOC. 3150 RICHARDS RD, #100 BELLEVUE, WA 98005 NOTT, FLORENCE, 15915 SE 134TH PLACE RENTON, WA 98059 NYBLOM,DAVE, PMB129 4820NE4THST.,#101 RENTON,WA98059-4845 OLIPHANT, RICHARD & ANITA, 16519 SE 145TH ST. RENTON, WA 98059 PETRIE, DAVE, 811 SOUTH273RDCOURT DES MOINES, WA 98198 PLATT, DAVID, 510 PANORAMIC DRIVE CAMANO ISLAND, WA 98282 ROCKABRAND, DA YID, FOUR CREEKS UAC 11427 162ND AVE SE RENTON, WA 98059 ROGERS, CAROL, CURRENT PLANNING SECTION DOES/ CPLN MS: OAK -DE-0100 ROLLINGER, MARSHA, 15646 SE 138TH PLACE RENTON, WA 98059 ROMANO, MICHAEL, CENTURIAN DEVEL SERVICES 22617 8TH DR SE BOTHELL, WA 98021 SCHARER, KAREN, PROJECT PLANNER MS: OAK -DE-0100 DDES/CPLN SCHOLES, GENEVA, 12924 158TH AVE SE RENTON, WA 98059 SCHUSTER, CURTIS G JOHN L SCOTT REAL ESTATE 12320 NE 8TH ST, #100 BELLEVUE WA 98005-4831 SCOBY, CHARLES & VIOLA, 13112 158TH AVE SE RENTON, WA 98059-8531 SEATTLE KC HEALTH DEPT. E. DIST. ENVIRN. HEALTH 14350 SE EASTGATE WAY BELLEVUE, WA 98007 SIDEBOTHAM, KAREN & JEFFREY, 13004 158TH A VE SE RENTON, WA 98059 SLATON, DANIEL B., 15315 SE 133RD COURT RENTON, WA 98059 STANSBURY, HOWARD, US LAND DEVL ASSOC/CENTURION 22617 8TH DR SE BOTHELL, WA 98021 STREIT, PEGGY, 13512 160TH AVENUE SE RENTON, WA 98059 THORBECK, PENNY, 15650 SE 138TH PL RENTON, WA 98059 WA ST.ECOLOGY DEPT I WQSW UNIT ATTN: LINDA MATLOCK PO BOX 47696 OLYMPIA WA 98504-7696 WATLER, DAVID, 15635 SE 138TH PL RENTON, WA 98059 WEITZ, ALEX, 15646 SE 138TH PL RENTON, WA 98059 WEST, LARRY, GEO REVIEW DDES/SDSS MS: OAK -DE-0100 WHITTAKER, BRUCE, PRELIMINARY REVIEW ENGINEER DDES / ERS MS: OAK -DE-0100 WILMOT, MR. & MRS., 13900 160TH AVENUE SE RENTON, WA 98059 WOLBERG, ALVIN, 16021 SE 136TH STREET RENTON, WA 98059 ZEEK, HAROLD & ELEANOR, 16621 SE 145TH ST. RENTON, WA 98059 . U) LU Cl C)' .. () ::::.::: i I la Jful·nnl I I f I I • I I If 111 111 ! i1!i .f •·i · ., ! I 1,11 ,1,11 1111 ,.11 I II I i !,I I I I I . 11f I f 1l1lhh I ATTACHMENT --'-- I I PAGE OF----,P:,-";A=G=-E - )> ~, -I i,! G)- m (") ::r: s: 0 m ~1~ z I~ rn """'Coonty Department of DeYelopment and Environmental 5efvices Land Use Ser,,iceg Division '900 ~ AYenUe SW Renton. WA 98055-1219 (206) 296-6600 PLAT DENSITY AND DIMENSION CALCULATIONS PREUUirWN SUeblvisiON WoAiciAli I Hilit ING I 6 DtNSI 1 Y Mo BIMENSIQNS A great many ordinances play a role in the creation of a subdivision within King County. Determining the allowable densily. maam.Jm density. minimum density. and lot Yl'il:tth on a piece of property can be oonfusing. This worksheet will assist you in OCln'lldl)I applying specific portions of lhe rode and win be used to determine II a proposed plat or short plat meets 1he density and dimensions prc,visons of the Killg County Zoning Code (Tille 21A). This wor1<.sooet is prepared to assist !tpplicants. and does not replace cornlJl:iance with adopted local. state and federal laws. Preappication corrterenc:es ere r=ommended. These o:>merenc:es help to clarify issues and answer questions They may save )IOU both !ffne and money by eliminating delays resulting from requests for additional intormation and revisions Yau may call (206) ~ to find out how lo aminge lo" a~ oonlerenc:e. DATE -NAME OF PlA T:..f.llEHDW FILE NO· = COMPREHENSIVE PLAN LAND USE DESIGNATION: llrh;m msiderJtin&i4-12 lroils per Aae ZONING ~ (WITH DENSITY CREDITS) COMMUNITY OR SU8AREA PLAN· ~ H more thao one~ Plan Land Use designation o,-mne dassific::atx:n eiast5 for the property. &tic-the OOUQdary between 1he land uses or zones and the area ....;t,in each en the prdiminary pat map. ti a single lo1 is divided by a ;rone boundary. transferring density ocross iones on that lot may be permitted subjed lo the p!l)',lisions of KCC · 21A.12-200. . Plf!Ase axnolr+: ootv tbe am!Slble rxx:1ioos ol lbn fgrn Soe Arm QC Cf'. 21 A 06 11zn Sne area (in SQUar9 teet) is the gross horizontal area of the project site . .l§s &Ubmerged lands as defined by K.C.C. 2 IAOS.1265. and =._areas which are required b be dedicated on the perimeter al a pn:,jed site for-public rihgts..of-way u square feet in submefged land {any land below the ordinary high wailer rnar1I ·&ee K..C.C.21A06.825.) .f. 24.807 ~ feet in~ rights..oj-ay whim will be required lo be dedil:ated Calculation: 11. (area 30 feet from center-~....., of ·road) ~ Total ----~"""".239_,.Gross horizont818R!8 °'· the prcj$l::t site ----~2~4~.80~7~ Total submerged lands ~ rights-of-way _____ 54,::,1".432=Sile area in square feet NOTE: To a:intinue cabJlations. OJrner1 site area in square feet to acns by dividing by 43.580 -----"'•'·="~ Sile tRa in ac::rei; Base Density (K.C.C. 21A.12.030-.040tables): Thlt base den9ity is demrmined by the 10N! designstion(s) for the lot. ,._., Pege 1 ol4 4 du/- REC1=11,r::ry t;o 3 8 OCT O 7 7nD.J (C OSR. h,nu LOu,v 1 ,' . 0 p ~ND USE SERVICES PLAT DENSITY AND DIMENSlON CALa.JLATIONS Ill, Alkzwebfe Qwrlliog !IMS arn1 Bouodin2 QC C C 21 A 12 OJOJ · The base number of a-llir,g units is calculated by m~ the site area by the base density in dwelling units pet • 001! (from K.C.C. 21A.12.030 · .040 tables). 12..43 sde area in acres (see Section I.J·X 4 base density (see Section II.) ----. 49.72 ~ dwelling units Round up to 50 O.U Wheo calculations result in a fredion. the traction is rotrded to the roeeiest 'MlOle number as iollows · 1. Fradiao& ot .50 or 8ba.e shell be rou-.ded up: and 2. Fractions bekM' .50 shall be rounded down IV. BcorirrdQn.sttefbmatiooS !KCC 2JA1418QJ· This 6edion must ~ a:wnplem:I only if the ~ is a resideritml de\ieklpmen1 of more than ku-dwelling units in the UR and A zones. stand-alone 1ownhouses in the NB zone on property desql8ted Canmen:::ial Outside of Cente<-if more than four units. or aoy moced use development if more than four units. Reaeation space must be computed by ~ the recreation space requirement per uni1 type by the proposed number ot such dwelling uni1s (K.C.C 21A.14. 180). NOTE: l<Jng Ca.r,ty has the discnroorl to aa::ept a fee n lieu of all or a portion of the required recreation space per K.C.C. 21A.14.185. Apertmems and lownhouses developed 81 a deosify gfea1ef" than eighl units per acre. and miiced use must provide rmea1iooal spac:e as followos: 90 square feel X proposed number of studlO and one bedroom Ulits O 130 SQU8re feet X proposed number of 1wo bedroom tnts 0 170 square feet X proposed number of~ or more bedroom units o -------Recreation Spece Requirement • ---·--0 Re&idential subdMsions and kMont-o.Jse& developed at a den6ify of eigtrt Lnifs or less per acre must pravide recrealicnal space as~: 390 square feet X 70 proposed number ot units = Mobile home par1<s shall provide recreational space as follows: 260 SQUare Jeet X pn:lp06>ed number ot units .. V. Net &ridab+e ,.,..,, QC C 9 2JA OfiZDD· This section is used for =mpvtjng minimum density Md mus1 be completed only ii the site is located in the R-4 through R-48 zones and designated Urben by the l<Jng County Comprehensiw Plan-The net buildable area is the site area (see Sedion I_J less the 1o11owing areas: 0 areas wi1bm...a ~ 6ite whidl a.-e requred to be dedic:m!rd for publ"ic rights.of.way ·n e:ia:::ess o1 sixty teet (601 of width . + 76.130 &et'ISitive erees and their buffem. lo the exterrt they are requited by King County to remain -+ -40.256 arens required for~ ground siormwa1er mntro1 tacilities induding. but not limited lo. cCt.itiocwdeb\OOI, ponds. biofiltratioo swa1es Md set1ec:ks from such ponds aod-swales + 13.850 areas required by King Coooty 1c be dedica:led or reserved as Oil-Sile recreation -· Deduct area within ~ a:xrtrol facilily ii requesting reaeation space credit as allowed 17,' KCC21A.14.180. (see Section IV) + 0 regional utility a:nidors. a,,d . + 0 o01er-. md.lding ~-requin,d by King c.cx.rty to rema,ir, undeYeloped Calculation: 130.036 Total redud;ioos ____ _,,54010.432=•-in SQUlft ~ 1-5edion I.) 130.036 Total reductions 27300 411.396 nst buidablll ~ in square feet NOTE: convert snit Nea in square ---feet to acres by dMding by 43.560 ,._., Page 2of 4 9.44 net buildabl& area in "m:res • Pl.AT DENSITY AND DIMENSION CALCULATIONS VI Mioiunrn IJrban A:rlmtial Peosdy !KC C 2JA 12 06Q) The minimum densny requiremeo1 applies col)' to the R---4 through R-48 zones. ~m density is determined by mulliplying the base density in dwelling U'1its per acre (see Section II.) by the net buiktable area of the site in .-:res (see Section V.) and then multiplying the.resulting product by the minimum density pen:zntage from the K.C.C. 21A.12.030 table. The minirrnJm density reQUirements may be phased or waived by King County in certain cases. See K.C.C 21~_ 12.060 Calruatioo ---~4 base density indufac (see Section II.) X 9.44 net buildable 11rea in aaes (see Section V.} ------c3c7c.7;,.8 X minimundensity %set forth in K.C.C. 21A.12.030 oras adjusted in Section VII. ----~32=.1~1 minimum dwelling urits required vu. Miniun DD Qens;ty MP rstnrals tor Moderate SL QSCC 21A t20BD Residential dewioprnents in the R-4. R-6 and R-8 zones may modify the minimum density factor in K.C.C. 21A.12.030 based on the weighted average slope ot the net buildable area of the site (see Section V.). To determine the weighted average slope. a 1cpograpnc;·~ is required 1o calrulate the net boildable area(s) within eadl of the folowing slope inaemems ar.i then muttiplying the number of SQUare 1eet in eacto s1ope ncremem by the median s1ope va1ue a1 each slope ircrement 8$ foPaNs· ______ .,_o Sq. ft o. 5% slope iroemernt X 2.5% median slopevah.Je + 0 sq. It 5 -10% slope increment X 7.5% median slope value + 0 sq. fl 10 -15% slope increment X 12.5% median slope value + 0 SQ. fl 15-20% slope incremenlX 17.5% median slope value + 0 SQ. It 20 -25% slope increment X 22.5% median slope value + 0 sq. It 25-30% slope increment X 27.5% median slope value + 0 sq. ft 30-35% slope increment X 32.5% median slope value ------~o SQ. It 35. 40% slope increment X 37.5% median slope value ------~O T ota1 SQUare feel O T ota1 square 1eet in net buildab6e area adjusted for slope Cak:uation: ___ ..cco total square feet adjus1ed tor slope divided by o total square feet in net buildable area "" ~ !Nef"age slope of net buildable area ______ % (Note: rnultirr,,by 100to oonver"l1P~. round Up lo nearest whole percent) Use the table below ID determine the minimum density factor. This density is sub6tituled lor the minimum density tador on K. C. C. 21 A.12.030 table .when calculating the mnimurn density as si--, in Section Vl. of this ~ Weighted~~ of Not Build!lbie s of Sita: t.tinmum Density Factr:>r-: 0% -less than 5% 65.00% 5% · Jess than 15% 83%. less 1.5% for each 1% of in excess of 5% 15%. less than 40% 66%. less 2.0% for each 1% of --_..__ in ma::ess of 15% EXAMPl.E CALCULATION FOR MINIMUM DENSITY ADJUSTMENTS FOR MOOERATE SLOPE$: -------sq. It O • 5% slope inm:ment X 2.5'X. median slope vakJe + SQ.It 5-10%slopeincntmentX7.5%medianslopevalue + sq. It 10 -15% slope incrernent X 12.5% median slope value + sq. ft 15. 20% slope~ X 17.5% medienslopevalue + Sq. ft 20. 25% slopeinm:ment X 22.5% median slope value + sq.ft 25-30%slopeinm:mentX 27.5%medillnslopevalue + sq, It 30 -35% slope inrnment X 32.5% median slope value + sq. It 35 -40% slope inaement X 37.5% median slope value 0 T ~ &QUal'e feet . ------°'-in net boildable area _____ ,,_o Tolill square feet -adjusted for slope "*"-· ____ btal square feet aqusted fer slope diYi:il!ld by 1ctal S(J.J81"9 lel!t in net buildable. ~ ______ weighted 11\iefage slope at net buidable area % (Note: rnutiply by 100 to <::OIMlrt to perc:enl -~ up tc nearest whole pe«:enl) Using the table above. an 11% ~ 81/efage slope of net buildable area falls within 1he 5% -leS& thaf\'15% range which has a mirimum densilyfador oj 83%. less 1.5% for oath 1% at aYeraQS Bq,e in e.::ess of 5%. Since 11% is 6% abo.1e 5%. rnutliply 6 times 1.5 whictl 'MIUld equal 9%. &btract9% from 83% for 1111 adjuR:,d rrinimum density fader at74%. This replaces the minirrun densityfadDr-in K.C.C. ZIA.12.030 table. 24-So,>03 ?age3 of4 0 0 ii ii 0 ~ 0 0 PLAT DENSITY AND DIMENSION CALOJLATIONS VIII. MiPxrn,m Pm::ffiii, ! lnits AA t QC CC21A 12 li'jij:" Q4()) This section should be ccmpleted only if the prtJpO&.al includes ~ of <esidential density inc:enti'.'1$ (K.C.C. 21A.34J or transfer of density credit (K.C.C_ 21A.36 or 21A.55). Maximum densrty is c:alaJlated by adding the bonus oc transfer units authorized ID the base units c:alwlated in Section Ill. of this work$heet. The maximum densrty permitted through residential density incentives is 150 percent ol 1he base density (see Section II.) ol the underlying zoning of the de\lelopme,1t or 200 percem of the base density tor proposals 'Mth 1 00 percent afforrlable units. The rnaianlum density pennitted through transfer of"density credit is 150 percent of the base densrty (see Section II.) of the undeftti,lg zoning"' the~ ----;;-0 base density in dweling units per eo-e {see Section It.) X 150% = O maximum density -~--s-0 ma>eimum density in dwelling units per acre X 12.42956841 site area in ocres = O maximum dwelling units allowed utilizing density inc:enwes (K.C.C. 21A.34} ___ _,o base density in dwelling unrts per ace (see Section II.) X 200% O maximum densrty -~--co maxmt.n density in CMelling units per acre X · 12.43 site area in ocres -o rna>cirnunl "-llillg urvts allowed utilizing density io::entNes with 100% affordable trits (K.C.C. 21A.34) 4 base density in~ units per acre (see Section II.) X I~ "' 6 rna,iimum density --- 0 s 0 m.nornum density in dwelling unm; per acre X 12.42956841 site area in acres.. 74.5n41047 maximum dwelling units allowed utilizing density transfers /K.C.C. 21 A.36 or 21A.55) Calruation IX X. 24-So,>03 Page4 of 4 50.00 base a1owab1e dweling tflits c:alc:ulaled in Sectian 111 ,----~=O~bonus units authorized byK.C.C. 21A.34 + 20 transfer units authoriled by K.C.C. 21A.36 or 21A.55 ~---~7~'·=00 lol:ai dwelling units (carnot exceed maximums calculated al:xJve) Minimum lot Area For Constructioo: ~ a!; t>rtMded for oonwntormanc:es in KCC 21 A.32: A B. ~ In 1he UR and R zones no construdion shall be permitted on a lot that mntairl& an area of less than 2.500 SQUetre feet or that does-not c:ornply with 1he applic::able minimum lot width. exc:ept tor townhouse °"""lopn,e, ,ts or zero-k:it-line subdivisions: and In the A. F. or RA zones· 1 Construdion _shall not be penritted on a lot contanng less than 5.000 square feet: and 2. Construction &hall be limited to one dwelling tnt and residential a:x:essory uses for lots c:ontaining greater than 5.000 square feet. but·"'" than 12.500 square feet CKCC 21A.12.100) Lot widths shall be meesured by scaling a c:sde of the aJ)l:llic:able diameter wilhin the boundaries of the tel as ~ belorw. PltMded 1hai an aa::ess easemenl shal not be induded "Mthin the circle. (See KCC 21A.12.050) z ATTACHMENT __ _ Z-OF ? --,P==-A'"""G,,..,E=---PAGE -- FROM Howard Stansbury FAX NO, 2064400065 -J.1,.40,,!UJ 1,.,.:4U J!it.il. 111:UtJ /;!U .. t''lll, .G.H.:Ut:U.:l'J. l'l.l, De~. 01 2003 11: 43AM P2 ~II> • 4A. DEVELOPMENT November 26, 2003 King County ODES .RE; .Evondell; PW'Chaso / Salo of Total Density Credits At1ention: Kmai Scmm:r: llklO J:tlrl'JI PLACE NE, #JOO DELLEVUE. WA esoor, Thia l.eUer i, to eonfirm that Michael Utt and Howard Sf.111\Bbury of US Land Developmcilr are In JIOSC>tlations with Charle$ Jackson of 4A Development to PIU'Chase 20 Total Denshy Credits (TDC) ftom 4A Development. US Land Development bas committed to purchase those TDC's Iha\ \hey uoed &om 4A Development and 4A Developmollt .ha9 oommill.ed tti ~I the TDC' s to US LaM Devel.opmcnt. Sincerely, Charles Jei:kson Ocneral Manager 4A Oevelopmen1 ~1/sjm ATTACHMENT ___ 3 __ _ --=~--OF I PAGE PAGE • -e King County Department of Development · And Environmental Services 900 Oakesdale Avenue Southwest Renton, Washington 98055-1219 . i WAC 197-11-965.ADOPTION NOTICE Adoption For: L03RE038 -Evendell /Major Plat Revision Associated Permits: L01P0016 Proponent: · Howard Stansbury, U.S. Land Development Associates· c/o Michael J. Romano · ' . Centurion Development Services 22617-, 8th Dr. SE Bothell, WA 98021 Project Description: Proposed is to subdivide the site into 70 lots for detached single-family residences. Twenty of the lots will result from transfer of density credits to this site. . . . \. Project Location: Lying south of SE 136th St. between 156th Ave. SE and 160th Ave. SE. Adopted Documents Prepared by: King County Department of Development and Environmental Services (DDES), Land Use Services Division (LUSD) Adopted Documents Prepared on: December 23, 2002 Description of Documents Being Adopted: Mitigated Determination ofNonsignificance (MONS) for rezone and subdivision of the site into 70 lots and Environmental checklist The Documents are available forReview at: · King County ODES, LUSD 900 Oakesdale Avenue SW Renton, WA 98055-1219. · After an independent review, the Department has decided that these documents are appropriate for this proposal and has adopted the documents. This document meets .the . Department's environmental review needs for the current proposal and will accompany the proposal to the decision-maker. There are no administrative appeals of this Notice of Adoption. ·~~ Greg Borba, Current Planning Supervisor, LUSD · SEPA Responsible Official Date: November 10, 2003 ATTACHMENT~-+4~- I OF l PAGE ~~P~A~G~E,__ I .t' ® Kbii County Dept. of Development and Bnvironmcntal Servicos umd Use Services DIYlsloll · 9000alcadaleAvenueSoUlhweat RoDlm!, WA 98055-1219 DATE: May 23. 2003 . . . · .. • .. ''''"''~··,, BOS. 2N_D AVENUB SB • ISSAQUAH, WA 98027 TO: Issaquah School District, ATTN:. ___ _ FM: Kim Claussen. Pmlectf Prgram Manager m RE: Proposed Plat & Rezone of Nichols Place (FIie Nos. L03P0015 & L03TY404) r . {<':. I : .·· ! ' The Land Use Services Division (LUSD) has received ·an application for a subdivision In your-District~-, ------,. · -:-c· - Enclosed Is a copy of the plat maps received by the Land Use Services Division on May 15, 2003. · · In order for us to adequately evaluate this proposal, provide the most accurate Information to the public, and for LUSD to serve the School District better, please provide us with the following Information: Which schools do you antlclpat~ the students living In this subdivision would attend? ke1ementary 0e.iewccd WCX") ' $:"kJr. High/Middle t'D°t,lDccd 0\ tMl-e, -Ktk'sr. High G 6 e<L~ lskcb ~ill the students walk or be bussed to these schools? n.. "r / "1K · · tElementary ~ ..,,,e(? ~~ Jr. Hlgh/Mlddle. __ __, _____ p--'="""""::,.,.s;ed....._ ______ _ r Sr. Hlgh, ________ fu__..=.,'S.._S,,,e ... d _________ _ If the students will be bussed, where do you anticipate the bus stops will be located? If that Information Is not available at this time, currently, where are the closest bus stops located to this site? Elementary __ ___:_,/(d)=--1_-b A"+"-'IJ.Q:::........:S-:::....>=£<--;;~;::....=S,.,:...;£;;.....;;J 3$1!::.=,._i-_s-r_-=--- l ..c: ,/ i.b f'U-Q s 4:.... ~, 'S, 'C__ /~/ g s-r Jr. High/Middle:___....!..::::.. v'():::....__;~.,;._--.,--'--------- Sr. Hlgn . l'5~ fWP §· t 3 & "c.. \ 3 / ~ S, ~er Comments: ,~ £.J,1.11 -;iJ' ( ,~ d/tl<'a/ l'hr!Tt//e /frlt. . ; ..•. /,.l ~ 81:~ M (/ IV /1(/c.. P Sc"/vnJ / t-v ~ ./~ o ,f-z! S-6-t tti!af/~ffJS:; ,A5 0k!-I & Mk vV//IK~s· Please complete this form and return It by June 18, 2003 to the address below. If you have question~ regarding this proposal, please call Karen Scharer, at (206) 296-7114. Thank you. ~ King County Department of Development and Environmental Services Land Use Services Division ATTN: Karen Scharer, Planner 900 Oakesdale Avenue Southwest Renton, WA 98055-1219 ATTACHMENT~_S'_-,- 1 OF--,F.z_~- PAGE PAGE •:. ii, ', I .' j .··, .i' .. I I . .. . ... , ~ ... , .. ., ... -- * C/,e />?~ -s~~ . 1h ::J3{"j~ .l)/.f7r,CT" CV,// ho(( tvt /i-MJ1rp-. ~ s'/u~· µ;1((C. fo " h s c;-/o,17 1)~ I ~ ? <fl-. f L c( [ £ I ft:q ~ : · ffe~ ~ ~ ~/~ ~s~4 #< µ,us~r~ £!_,,,,,~ ( W-c µ;,// K.•'-"v'-. 5~ Mni/ f' 6,;s;,'/ i s1,,vU, 4</10 . (oc;d-i~ , ) ' ~ ... ~-/f--<!3 (/ /l . ATTACHMENT S° ?.- PAGE OF -z_. PAGE ) .. · · ............................. _._ ......... __ ........... s~c:~-SSOB6 'i!M •uo1ua'!:I . ___ .,...._...._;_;:___ _____ .. _ ---·----r;· . @ · Ki~g County :CDES DEPARTMENT OF DEVELOPMENT AND ENVIRONMENTAL SERVICES 900 Oakesdale Avenue Southwest Renton, Wa 98055-1219. ~---'--'--·: ._~·_:·~· .. _ · , . f · .. :::.'.. . ;:-: : ·v;i~:?':'?f )1f 'if: : ::::: Thisc~rtificate p1 .es,theSelittle Kiri'g ;\. County Department of Public Health ·and ; · the Department 6t Development and '• ', · •I: . Environmental :Services' witti-information ' necessary:to evalu~te cte\ielopment >; ' . ,·· ' ' .. ,' •··• . ' propos'als. '· · · · · • ·•·· ·· ··,·.,; · ·· ;.}-.-. )" .~-~:.-t.,_:_r:_.:-.,,/,:-:. •. ): ~:-.'•, . . : . . ····;·',::·~--.·:.~.-.·~._-_-..• _;r_· __ i __ .. '_: .. ·.·.• •••.•• · •• ·•• •. :._.::a·. :_ .• · .· ·,•·. ': ·_·,.\, ;.· ~:-:<::..:: .. ~ :\~ ·-~ r '::·;• .' -~:':_ ... ,,·::: ::}(<:: _:. King County Certificate.of Water:'Av.a·i!~,~ilicy<: . . .. . . . ' .·· ·:'.;.'·: '\\·1i)1 .. 1;';\1 ' .. : '· Do not write.In this box number D Building P,ermlt D Short Subdivision ~ Prellmlnary Piat or PUD D Rezone or other _______ _ ··----• -----1i Water purveyor information: . . -~ .. 2. ~-- .. D 3. -~·· D 4. ~ .OR b. a .. OR b. a . . ·OR .b.· a. I certify that the above water. purveyor information Is true. This certification shall.be vallcl'fcifi.l2ru[,.fiomdate of.slghature:1·>':·t· ,((.' KING COUNTY WATER DISTRICT #90 LESTER PIELE RENEWAl;FEES:0W/1Ntpjeifr'·$SQ;QQ·:; .' '. :::: :,::-: ' Agency name Signatory na/ . . · ·_ ·· AITER'l year:'$125:oo' : . '' '_!, . SUPERINTENDENT ~ ./'~ ; .. •· :,: ~if~/2663::;'.; ,:, i' > ; .. • Title Signature .. · ;· Date · . . .. ; , ,:·,. Z:\Water Availablllty Certificates\Water Availability\Evendell -US Land.doc • r« Jesse Tanner, Mayor November 19, 2003 Attn: Karen Scharer· · ODES -Land Use. Services Division ·900 Oakesdale Avenue Southwest Renton, WA 98055-1219.··· CITY . _.;F RENTON Planning/Building/PtiblicWorks Department Gregg zimmerma~ P.E., Administrat~r SUBJECT: EVENDELL PLAT MAJO~ REVISION~ FiLE NO. L03RE038 Dear Ms. Scharer: 'fhank you for the. opportunity of reviewing and commenting cm this project. Renton 's . Planning/Building/Public Works Deparimerit comments are as follows:. I. Water service will be provided by King County Water District#90. Sewer is available with the City of Renton. · . . . . 2. The proposed developme~t is within Renton'~ Pot\)ntia!Annexation Area. Therefore, we request the following: . . . . • · The Preliminary Plat Plan is not clear regarding the width ofright-of-way dedication required along SE 136th Street between 158th Avenue SE and 160th Avenue.SE. A minimum 20-foot dedicaH9n would conform to City of Renton standards. • Right-of-way for all streets within the. site should conform to City of Renton standards (i.e. minimum of 42-foot width versus the 32-foot wid.th proposed for several streets on · the Plat Plan). · · · · · · • . Street improvements (roadway paving, curb and gllttej', sidewalks, street lighting, etc.) for the street system wit)tin the site and along SE 136th ~treet abutting the site should be. installed in accordance with City of Renton standards. · • Roadway pavement widening, curb and gutter, sidewalk, street lighting, ahd drainage facilities should be installed along 160th Avenue SE abutting the site in accordance with. City of Renton standards (versus the paved shoulder and drainage ditch proposed on the Plat Plan} ~~-'--~~~10_5_5_S_ou_t_h_G-ra_d_y_W-ay~:R_e_n_to-n-,.W-a-s~hi-ng-t~on~98_0_5_5~~~~~-~- @ This paper contains 50% recycled meteri.01, 30% post consumer' AHEAD OP THE CUR.VE Sincerely, l •· Ae//A~/11/f P!Pt Gregg zl~eL,~dministrator Planning/Building/Public Works Dept. cc: Jenilifer Hcnn_ing Lys Hornsby Sandra Meyer ATTACHMENT_~? __ -,,..,.....,,..,;,..\ _OF--,~'=-PAGE PAGE • .,-.. ·. ·-:-··· .. _!f;I_~~:~. :, ,.'J:;J~,Q':~N.19N•·:.•·.' Pjanni,,igll3ilildJ#g!PublicWorjci Department • · . · .. ' GreggZlmmennan l'~ Admilllstratol' . ' .\,' . :. . . . ( . .:.:.·(.:" ::.:-. .. -<·· > ·: ·. ,.-.::. ... -. .,.: ;:, : ,7_.: ~.·· .• _: .. · < N'o;einlier'Z6i26ol.:i.-, .,.., . . ·:· · ..... . ,• ',' :-,. ,. Miciuu:P>Roµi~;; ' / . (!:eiiturion De'(elopritent Service~ . '. ,~61:7. 8'11:o,ive-SE · : ·. -. . -, ·_:•".B···th· · 11· ··'WAi,9go•2·1· ·. ' ·• • · . o e , ... .. · ·, ·"~::>'\--·--:.<-:·.": _. · .. ,~:--s~~: ·/S,:ARY_:~~~A~~JtJ:idi,~w:~~it-;SLdi~ii~-.. ·· . REQUESTFOREXT~I0l'iOP'..$WERAVAILABILI'.rY .. -. . ·. ,.. . . . . .... . . . ·~: .. •0earM;::Romano.=.:_ -. :,/;:>. Infesponse toyoui-Ieffiir dat~4. Nove¢~il9.,iZOJl3,\~11rr¢qtiest for l\li·~~e.psi~il oftbe· <· aviiilapility i.s appiQved; ·'Yo\lr c~nlf!v/liiabiiity ~piratiol)' date is hereby 'extended from ' • J~uiu:y JS, 2.0.Q~ t~ )~ii~· tg2o~s;;Ii)~ ~ot~ tiiat :ail' ~nditiofu; a#lie~ to thl~ . . . •av(iila6il1ty 11t original issuance.and b :~ uent,Jetter' still in fullaffect: : · . ' ,, .·. :~st-·'' -::':~~;;~s\br#t;,~~rorE;¥~,~i(425)4j02;ji2:'. :. i.:{:~~:..:~:~-.~.'.!~_;.:.: .. i.?_::.:/ \}: )·t;·/ _:.· . 1-·=:·. 'l-''.-' :><\.:.t_\.~,:··.·.::· .. : .. :r: en : •''·' >· . . T.'.,!w,.:..,<.~~ijp,e,.f~•':';:{ ;: •. · ·<.:ti~;,~- -~ ·: ~:-' '.. . ,•, . -~-· .. ATTACHMENT___,e5...__~ --:::-:-,,:l=--OF---,,-,,1~-PAGE PAGE . I. ,'.:: ... ··-' .· ' I . ·; . .!VO-;;.:,,..,, . --. -----Original Message---- ~= Shivety, John Se;;t: Wednesday, September 03, ?,003 12:17 PM To: SCharer; Karen I Cc: Warren, Richard: Wright, Kevin; McM.ahon, Dennis; Campeau, Rebecca Concurrency for Proposed Evendell Plat and Rezone (L01P0016) Karen. . K.C. D.O.E.::;. I am responding on behalf of Richard Warren to your question on concurrency for the proposed Evendell Plat and Rezone (L01 P0016). The answer to your question is that the current certificate of concurrency is still valid for a plat revision up to the number of iots identified on the certificate .. We have consulted with the Prosecutors Office in making this determination. The key here. is that the develo~r is seeking a revision of the same proposal for which they were originally given a · certificate of concurrency. and therefore the revision is considered under the same application · period. Since a c.oncurrency certificate is valid throughout an application period. the current certificate of concurrency remains valid. up to the number of lots identified in the certificate. durir,g any plat revision review process. · l); 1 612003 . I apologize for the delay in responding due to various key people being on vacation the past several weeks. If you need further assistance. please contact me. or'Rebecca Campeau at 263-4722. Thank you. · ' • · John Shively Transportation Planner Ill· ATTACHMENT~g_,__~ I OF-..:;2...~;=-- PAGE PAGE . " ' , . ® King County Road Services Division Department ofTl'ansportatlon .201 SouthJackson Street Scat de, WA 98104-3856 .. ,,.,....... . TYPE OF CERTIFICATE ~ORIGINAL 0 CONDITIONAL ,,-, , ' I ' ' ,.-' May 24, 2001 · Certificate # 01305 FIie Number: 01-05-14-02 Exnlres: Mav 24. 2002 CERTBFDCATIE OF TRANSPORTATION CONCURRENCY 0 Specific conditions are described on the.reverse side of this cenificate. Pursuant to King County Code, Chapter 14. 70 as amended, this cenificate confirms that the level of service standard used in the Transportation Concu.rrency Management program has been satisfied and sufficient road capacity is reserved for the development project described below. IMPORTANT: This cenificate does·not guarantee a development permit. ·other transponation improvements and mitigation will be required to comply with Intersection Standards, Mitigation Payment System, King County road standards, and/or safety needs. I. Applicant Name and Address: Centurion Development Services 22617 8th Drive S.E., Bothe!, WA 98021 2. Property Location: a. Propeny Address: 13606 158th Ave. SE b. Development Name: Evendell c. Parcel Number: 1423059009 3: Type of Development Permit To Be Requested: Formal Plat 4. Proposed Land Use: Single Family Residential 5. Zone Location and Reserved Units: a. Concurrency Zone: 452 Community Planning Area: Newcastle i. Commercial Project -Total Square Feet: 0 ii. Multi-family • Number of Units: 0 iii. Single family -Number of Units: 75 6. This Certificate is subject to.the follo\Virig general conditions: a. rhis Certificate of COncu·rre~cy runs with the land and is transferable only to subsequent owners of the same property for the stated development, subject to the terms, conditions and expiration date,li.s!!'d herein. This Cenificate of Concurrency is not transferable to any other propeny and has no commerci~.c:,, 1 . . . ·,~,., This Certificate Expires: May 24, 2002 · unless you apply ior the development permit described above, prior to that date. If this requiJt;/;,19 'l"YR.!l!. the King County Depanment of Transportation reserves the option to cancel your cenificate and capacity rel'el"'4,lon. . . . . . . LAND ' "' When you apply for a development permit with King County's Department of Development and ~nvi~"9()i"iti'Jfts (DOES), bring this Certificate of Transportation Concurrency as part of ~lie development application package. ·~~S have any questions, please call (206) 263-4722. Linda Dougheny, Acting Manager, Road Services Department of Transportatio~ King County, Washington Loaato8 0 8 ATTACHMENT -, 2 2. ____ OF ___ _ PAGE PAGE ·~·· :. ' ··-,• 0 King County Department of Development · and Environmental Services 900 Oakesdale Avenue SW Renton, WA 98055-1219 October 17, 2002 · Mike Romano Centurion Development Services 22617 Eighth Drive SE Bothell, WA .98021 Dear Applican d Engineer: .Edward J. McCarthy, P.E .. Haozous Engine~g, P.S. 14816 SE 116th Street Renton, WA 98059 . and Use Services Division, Engineering Review Section, has completed review of the adjustment request for .the EyendeH subdivision. You are requesting approval for an adjustment from the 1998 t,ing County Surface Water Design Manual (KCSWDM) Core Requirement No. 1, Section 1.2.1, Discharge at the Natural Location. Our review .of the information and a site visit provides the following findirigs: I. The pro.rosed Evendell subdivision is located west of 160th Av~:U~ S~ and south of SE 136 Street. The 75 lot, 11.7 acre, proposed Evendell subdiVIs1on 1s filed under Land Use Services Division (LUSD) file number L01P0016. 2. The Evendell subdivision is located in the Orting Hills sub basin of the Lower Cedar· River basin'. The site is subject to the Level Two flow control and Basic water quality requirements of the 1998 KCSWDM. 3. The site consists of two adjoining, rectangular areas south of SE 1361hStreet split by 158th Avenue SE. The smaller, western rectangle is 1.9 acres in size, while the larger, eastern rectangle is 9.8 acres. A common ridgeline passes approximately north- northwest to south~southeast through the two areas with the majority of the site draining to the east.. The western subbasin sheetffows in a southwest direction through large, single family J'arcels. and is eventually intercepted by a ditch drainage system on the east side of 156 Avenue SE. and flows south. · The eastern sub basin sheetflows to the southeast and is eventually intercepted by a ditch system on the west side of 160th AvenueSE and flows south. Both downstream drainage paths eventually recombine · in an unclassified tributary of the Lower Cedar River. Most upstream flow·is intercepted by ditches on the north side of SE 136th Street and is bypassed around the project site or through the wetland area in the northeast comer of the site. · i . _ ATIACHMENTJ ATTACHMENT / 0 I OF z... PAGE -~PA.;:=G""E~ Evendell/L02V0024 October 17, 2002 Page 2 of3 .. • 4. The proposal is to collect most runoff from the project site and direct it to two facilities designed to separately accommodate drainage from the western and eastern areas of the site. The result is that .0.58 acres of the eastern subbasin will be diverted to the flow control vault and bioswale of the western rectangle of the site; and 0.73 acres of the western subbasin will be diverted to the combined wetpond/detention pond serving the eastern rectangle of the site. In the developed condition, the net effect is that 0.15 acres of the western subbasin will become tributary to the eastern subbasin's downstream drainage system. As a result, controlled outflows from the western area will be released farther upstream in the ditch system of 1561h Avenue SE reducing nuisance sheetflow through the intervening parcels. The release location from the eastern subbasin will remain the same. A negligible shift in flows in the two downstream drainage paths will result. The current conceptual drainage plan indicates that a significant amount of frontage improvement drainage will bypass the planned RID facilities. 5. No decorative ponds or shallow wells have been identified that would be affected by the proposed diYersion. 6. The Level One and Three Downstream Drainage Analyses identified conveyance restrictions and nuisance flooding problems associated with both of the proposed downstream discharge locations. Although this adjustment is not addressing the potential for increased flow control standards as a result of the downstream drainage problems, the net impact of the proposed diversion will have a negligible impact on either downstream drainage path. Based on these findings, we hereby approve this adjustment to allow the diversion of on-site runoff between the two drainage subbasins to two separate facilities ultimately draining to their natural discharge locations with the following conditions: ' 1. The release rates for the detention facilities will be based on the natural and diverted tributary areas being directed to the facilities. 2. The volume for the detention facility will be based on all flows directed to the facilities at full development under current zoning. The allowed release rates will be reduced by any undetained flows that would bypass the proposed subdivision drainage facilities. A 10 to 20 percent volumetric factor of safety must be applied to all storm events requiring detention. The design Technical Information Report shall state the factor 0f safety selected and the basis of that determination. · 3. Water quality facilities must be sized based on the entire proposed subdivision draining to the facilities including any required frontage improvements. 4. All onsite or offsite drainage facilities must be located in a public right-of-way or storm drainage tract dedicated to King County. ATTACHMENT~\'--'1)~- ~~~2.-=--oF:~-"'_.3-=-· PAGE PAGr-- .. , ...... Evendell/L02V0024 October 17, 2002 Page3 of3 • 5. Additional storm drainage requirements identified by SEPA or the plat hearing review will apply to this project. · · If you .have any further questions regarding this KCSWDM adjustment or the design requirements, please contact Mark Bergam at (206) 296-7270. Jim Chan, P.E. Supervising Engineer James Sanders, P.E. Development Engineer Engineering Review Section Land Use Services Division Site Engineering and Planning Section . Building Services Division · cc: Curt Crawford, P.E., Managing Engineer, Stonnwater Services, KCDNR Randall Parsons, P.E., Senior Engineer, Engineering Review Section, LUSD Bruce Whittaker, Senior Engineer, Engineering Review Section, LUSD Karen Scharer, Planner II, Current Planning Section, LUSD Mark Bergam, P.E., Senior Engineer, Engineering Review Section, LUSD ... -·---~-" .. ·--·--·-·-.. -· .. ATTACHMENT~,_! 0~- ..5L OF 3, PAGE --,,P~A"=G""E,-- • TO: RE: ,-\__....._ . ....., / --! OFFICE OF THE HEARING EXAMINER King County, Washington NOTICE OF APPEAL MEETING DATE PARTIES AND INTERESTED PERSONS Department of Development and Environmental Services Files: L03RE038, Evendell Plat Revision; L03P0006, Liberty Grove L03P0005, Liberty Grove Contiguous And L03P0015, Nichols Place Proposed Ordinances: 2003-0490 2004-0006 2004-0005 2004-0013 J100 Action on the appeals from the Decisions of the King County Hearing Examiner on the above referenced applications is scheduled to be taken by the Metropolitan King County Council at its meeting on May I 0, 2004 at 9:30 a.m., or as soon thereafter as possible, in Room I 001, Council Chambers, King County Courthouse, 516 -3'd Avenue, Seattle, Washington. In order to assist the members of the Council in considering appeals from the Hearing Examiner, the Examiner prepares packages of summary information ("Appeal Packages"). Attached to this notice is the tables of contents of each of the "Appeal Packages" prepared for these appeal proceedings, as well as copies of the Examiner's summary of issues on appeal. These packages are delivered to the members of the Council in advance of the time set for oral appeal arguments. The complete record of the public hearing is also available to the members of the Council for review at their convenience. Presentation of oral arguments to the Council is usually limited to parties to the appeal (those persons who have filed written appeal statements or responses thereto within the allowed time periods). Normally each party to the appeal, or the party's representative, is allowed a brief time set by the Council to make an oral presentation. If there are multiple parties, generally only one person supporting and one person opposing the appeal may provide oral argument, unless all parties supporting a common position agree to a division of time among themselves, or different time allowances are set by the Council. The time limit on presentations is usually ten minutes, which does not include time spent responding to questions by the Council. The Council may also address questions to other persons who are present. All persons who are given an opportunity to speak should keep in mind that the Council's consideration of these appeals is limited by King County Code Section 20.24.220 to the record of the hearing before the Examiner. Therefore, no new evidence may be introduced, and references to factual information must be limited to matters that previously have been introduced into evidence. Any contact with a member of the Council concerning these appeals prior to final action by the Council is prohibited by law. DA TED this 28 1h day of April 2004. .. Ordinance Concurring with Examiner's Recommendation Vicinity Map Examiner's Summary of Appeal Issues Appeal Arguments C.A.R.E./Gwendolyn High Appeal Responses TABLE OF CONTENTS U.S. Land Development Association Shirley Day Examiner's Report and Decision Department of Development and Environmental Services Preliminary Report Department of Development and Environmental Services Corrections to the Preliminary Report .. Page No. 3 4 6 19 34 35 49 69 .. .. EXAMINER'S SUMMARY OF APPEAL ARGUMENTS RE: Department of Development and Environmental Services File No. L03P0015 I. 2. 3. 4. Proposed Ordinance No. 2004-0013 Nichols Place Preliminary Plat and Proposal for Transfer of Density Credits Examiner: Parties to the Appeal: Appellants: Respondents: Location: Issues on Appeal: James N. O'Connor Citizens Alliance for a Responsible Evendell ("C.A.R.E."), represented by Gwendolyn High U.S. Land Development Association, Represented by Duana Kolouskova Shirley Day West of I 60'h Avenue Southeast, south of Southeast 138'h Street (if extended) at 13815 -I 60'h Avenue Southeast A. Should the transfer of eight (8) density credits to this site be approved, to permit the development of23 lots on 3.82 acres in the R-4 zone? B. Should additional conditions be placed on the"revised plat to reduce the danger from trees on adjacent properties that may be damaged or exposed to wind as a result of the development? 5. Appellant's Arguments: A. There is not a shortage of housing capacity that requires additional density on this property. The transfer of density credits to this site is inconsistent with County Wide Planning Policies and Comprehensive Plan Goals and Policies, as required by KCC 2IA.37.0IO. This location is not one where necessary infrastructure already exists or can be provided at the lowest public cost. Although located in the Renton potential annexation area, required interlocal agreements have not been made by King County with Renton. King County has failed to address issues raised by the City of Renton. New development in existing neighborhoods should build on existing patterns. This neighborhood is now divided into lots ranging from 15,000 square feet to I V. acres, 6. giving an overall impression of a suburban or somewhat rural area. It is isolated from fully developed areas. B. ODES proposed a condition for the adjacent plat ofEvendell to protect trees on the property adjacent to the west of Evendell by establishing an easement over the drip line areas on the Evendell property. Removal of trees on the subject property will expose offsite trees to winds that creates a risk to the safety of adjacent property owners. Respondent's Arguments: A. The County's Transfer of Density Rights ("TOR") program designates areas within the county that may receive density credits. A site within a designated receiving area has an outright ability to use density credits. A proposed development using density credits is processed as a regular subdivision, without additional subjective review related to the use of density credits. This property is in a designated receiving area, being in an unincorporated urban area zoned R-4. KCC 21A.37.030 (A)(!). R-4 allows a maximum density of 6 dwelling units per acre using density credits. The proposed plat revision is within that maximum. A new TOR review process that would apply Countywide Planning Policies and the Comprehensive Plan directly to a subdivision is not contained in the county code or permitted by state Jaw. No code provision bars development in an area not subject to an interlocal agreement. The City of Renton supported this subdivision by allowing 23 sewer hook-ups for the property. B. No county code provision addresses impact to trees on adjacent properties. There is no legal basis to impose additional conditions. Examiner's Recommendation: No change from March 2, 2004 decision. I .. Ordinance Concurring with Examiner's Recommendation Vicinity Map Examiner's Summary of Appeal Issues Appeal Arguments C.A.R.E./Gwendolyn High Appeal Responses Lakeridge Development Shirley Day Examiner's Report and Decision TABLE OF CONTENTS Department of Development and Environmental Services Preliminary Report .. Page No. 2 3 4 6 19 33 34 51 .. .. EXAMINER'S SUMMARY OF APPEAL ARGUMENTS RE: Department of Development and Environmental Services File No. L03P0005 I. 2. 3. Proposed Ordinance No. 2004-0005 Liberty Grove Contiguous Preliminary Plat and Proposal for Transfer of Density Credits Examiner: Parties to the Appeal: Appellants: Respondents: Location: James N. O'Connor Citizens Alliance for a Responsible Evendell ("C.A.R.E."), represented by Gwendolyn High Lakeridge Development, Represented by Duana Kolouskova Shirley Day South of Southeast 136th Street, between !601 • Avenue Southeast and 162°' Avenue Southeast 4. Issue on Appeal: 5. Should the transfer of a maximum of five (5) density credits to this site be approved, to permit the development of36 lots on 7.92 acres in the R-4 zone? Appellant's Arguments: There is not a shortage of housing capacity that requires additional density on this property. The transfer of density credits to this site is inconsistent with County Wide Planning Policies and Comprehensive Plan Goals and Policies, as required by KCC 21 A.37.010. This location is not one where necessary infrastructure already exists or can be provided at the lowest public cost. Although located in the Renton potential annexation area, required interlocal agreements have not been made by King County with Renton. King County has failed to address issues raised by the City of Renton. New development in existing neighborhoods should build on existing patterns. This neighborhood is now divided into lots ranging from 15,000 square feet to I Y. acres, giving an overall impression of a suburban or somewhat rural area. It is isolated from fully developed areas. Respondent's Arguments: The County's Transfer of Density Rights ("TOR") program designates areas within the county that may receive density credits. A site within a designated receiving area has an outright ability 6. .. to use density credits. A proposed development using density credits is processed as a regular subdivision, without additional subjective review related to the use of density credits. This property is in a designated receiving area, being in an unincorporated urban area zoned R-4. KCC 21A.37.030 (A)(l). R-4 allows a maximum density of6 dwelling units per acre using density credits. The proposed plat revision is within that maximum. · A new TDR review process that would apply Countywide Planning Policies and the Comprehensive Plan directly to a subdivision is not contained in the county code or permitted by state law. No code provision bars development in an area not subject to an interlocal agreement. The City of Renton supported this subdivision by allowing sewer hook-ups for the property. Examiner's Recommendation: No change from February 27, 2004 decision .. Ordinance Concurring with Examiner's Recommendation Vicinity Map Examiner's Summary of Appeal Issues Appeal Arguments C.A.R.E./Gwendolyn High Appeal Responses Lakeridge Development Shirley Day Examiner's Report and Decision TABLE OF CONTENTS Department of Development and Environmental Services Preliminary Report .. Page No. 2 3 5 7 19 33 34 51 .. .. EXAMINER'S SUMMARY OF APPEAL ARGUMENTS RE: Department of Development and Environmental Services File No. L03P0006 I. 2. 3. 4. 5. Proposed Ordinance No. 2004-0006 Liberty Grove . Preliminary Plat and Proposal for Transfer of Density Credits Examiner: Parties to the Appeal: Appellants: Respondents: Location: Issue on Appeal: James N. O'Connor Citizens Alliance for a Responsible Evendell (C.A.R.E.), represented by Gwendolyn High Lakeridge Development, Represented by Duana Kolouskova Shirley Day North of Southeast 136'h Street, between 1601h Avenue Southeast and 158 1h Avenue Southeast Should the transfer of five (5) density credits to this site be approved, to allow the development of 24 lots on 4.84 acres in the R-4 zone? Appellant's Arguments: There is not a shortage of housing capacity that requires additional density on this property. The transfer of density credits to this site is inconsistent with County Wide Planning Policies and Comprehensive Plan Goals and Policies, as required by KCC 21A.37.010. This location is not one where necessary infrastructure already exists or can be provided at the lowest public cost. Although located in the Renton potential annexation area, required interlocal agreements have not been made by King County with Renton. King County has failed to address issues raised by the City of Renton. New development in existing neighborhoods should build on existing patterns. This neighborhood is now divided into lots ranging from 15,000 square feet .to I Y. acres, giving an overall impression of a suburban or somewhat rural area. It is isolated from fully developed areas. .. .. Respondent's Arguments: The County's Transfer of Density Rights ("TDR") program designates areas within the county that may receive density credits. A site within a designated receiving area has an outright ability to use density credits. A proposed development using density credits is processed as a regular subdivision, without additional subjective review related to the use of density credits. This property is in a designated receiving area, being in an unincorporated urban area zoned R-4. KCC 21A.37.030 (A)(l). R-4 allows a maximum density of6 dwelling units per acre using density credits. The proposed plat revision is within that maximum. A new TDR review process that would apply Countywide Planning Policies and the Comprehensive Plan directly to a subdivision is not contained in the county code or permitted by state law. No code provision bars development in an area not subject to an interlocal agreement. The City of Renton supported this subdivision by allowing sewer hook-ups for the property. 6. Examiner's Recommendation: No change from February 23, 2004 decision. .. Ordinance Concurring with Examiner's Recommendation Vicinity Map Examiner's Summary of Appeal Issues Appeal Arguments C.A.R.E./Gwendolyn High Appeal Respons~s TABLE OF CONTENTS U.S. Land Development Association Examiner's Report and Decision Department of Development and Environmental Services Preliminary Report Department ofDevelopment and Environmental Services Corrections to the Preliminary Report .. Page No. 3 4 6 20 38 59 83 .. EXAMINER'S SUMMARY OF APPEAL ARGUMENTS RE: Department of Development and Environmental Services File No. L03RE038 I. 2. 3. 4. Proposed Ordinance No. 2003-0490.1 Evendell Revision Preliminary Plat Revision and Proposal for Transfer of Density Credits Examiner: Parties to the Appeal: Appellants: Respondent: Location: Issues on Appeal: James N. O'Connor Citizens Alliance for a Responsible Evendell (C.A.R.E.), represented by Gwendolyn High U.S. Land Development Association, Represented by Duana Kolouskova Lying South of Southeast 136'h Street, between l 56'h Avenue Southeast and 160 1h Avenue Southeast A. Should the transfer of20 density credits to this site be approved, to permit revision of this preliminary plat to allow the development of70 lots on 12.43 acres in the R-4 zone? B. Should additional conditions be placed on the revised plat to reduce the danger from trees on adjacent properties that may be damaged or exposed to wind as a result of the development? 5. Appellant's Arguments: A. There is not a shortage of housing capacity that requires additional density on this property. The transfer of density credits to this site is inconsistent with County Wide Planning Policies and Comprehensive Plan Goals and Policies, as required by KCC 21A.37 .0 I 0. This location is not one where necessary infrastructure already exists or can be provided at the lowest public cost. Although located in the Renton potential annexation area, required interlocal agreements have not been made by King County with Renton. King County has failed to address issues raised by the City of Renton. New development in existing neighborhoods should build on existing patterns. This neighborhood is now divided into lots ranging from 15,000 square feet to 1 Y. acres, giving an overall impression of a suburban or somewhat rural area. It is isolated from fully developed areas. .. .. B. DOES proposed a condition to protect trees on the adjacent property to the west by establishing an easement over the drip line areas on the subject property. Removal of trees on the subject property exposes offsite trees to winds that creates a risk to the safety of adjacent property owners. Respondent's Arguments: A. The County's Transfer of Density Rights ("TDR") program designates areas within the county that may receive density credits. A site within a designated receiving area has an . outright ability to use density credits. A proposed development using density credits is processed as a regular subdivision, without additional subjective review related to the use of density credits. This property is in a designated receiving area, being in an unincorporated urban area zoned R-4. KCC 21A.37.030 (A)(I). R-4 allows a maximum density of 6 dwelling units per acre using density credits. The proposed plat revision is within that maximum. A new TDR review process that would apply Countywide Planning Policies and the Comprehensive Plan directly to a subdivision is not contained in the county code or permitted by state law. No code provision bars development in an area not subject to an interlocal agreement. The City of Renton supported this subdivision by allowing 75 sewer hook-ups for the property. B. No county code provision addresses impact to trees on adjacent properties. There is no legal basis to impose additional conditions. 6. Examiner's Recommendation: No change from February 4, 2004 decision. .. . ) . OFFICE OF THE HEARING EXAMINER KING COUNTY, WASHINGTON 400 Yesler Way, Room 404 Seattle, Washington 98104 Telephone (206) 296-4660 Facsimile (206) 296-1654 February 4, 2004 REPORT AND DECISION __ ..:..-··----·--- SUBJECT: Department of Development and Environmental Services fil os. L01P0016A and L03RE038 Proposed Ordinance No. 2003-0490 EVENDELL Preliminary Plat Revision and Proposal for Transfer of Density Credits Location: Lying South of Southeast 136th Street, between 156th Avenue Southeast And 160th Avenue Southeast Applicant: U.S. Land Development Association/Centurion, represented by Michael Romano 22617 -8th Drive Southeast Bothell, Washington 98021 Telephone: ( 425) 486-2563 Facsimile: (425) 486-3273 King County: Land Use Services Division, represented by Karen Scharer 900 Oakesdale Avenue Southwest Renton, WA 98055-1219 Telephone: (206) 296-7114 Facsimile: (206) 296-7055 SUMMARY OF DECISION/RECOMMENDATION: Department's Preliminary Recommendation: Department's Final Recommendation: Examiner's Decision: . EXAMINER PROCEEDINGS: Hearing Opened: Hearing Closed: Approve, subject to conditions Approve, subject to conditions (modified) Approve, subject to conditions (modified) January 22, 2004 January 22, 2004 •• LOl POO 16A & L03RE038 -EvendeU Revision Page 2 of21 Participants at the public hearing and the exhibits offered and entered are listed in the attached minutes. A verbatim recording of the hearing is available in the office of the King County Hearing Examiner. ISSUESfrOPICS ADDRESSED: • Transfer of density credits • Road improvements • Safe walking conditions , Wetland buffer averaging • Tree protection SUMMARY: Application for approval of transfer of20 density credits and revision ofa preliminary plat, to subdivide 12.43 acres into 70 lots in the urban area, is granted preliminary approval. FINDINGS, CONCLUSIONS & DECISION: Having reviewed the record in this matter, the Examiner now makes and enters the following: FINDINGS: I. General Information: Owner: Representative: Location: Section/Township/Range: Acreage Plat: Zoning: Number of Lots: Density: Lot Size: Proposed Use: Sewage Disposal: Water Supply: U.S. Land Development Association P.O. Box 22200 Seattle, WA 98122 Michael Romano Centurion Development Services 22617 glh Dr. SE, Bothell, WA 98021 Phone: 425-486-2563 Facsimile: (425) 486-3273 e-mail: Michael.romano@verizon.net Lying south of SE 1361h Street between 1561h Avenue SE and 1601h Avenue SE. SE 14-23-05 12.43 acres R-4 Parcels# 142305 9022 & 9009 Proposed: 70 (previously approved: 46) 5.6 dwellings per acre 3,900 to 6,600 square feet single family City of Renton Water District #90 ' . • LOJPOOl6A &L03RE038-Evendell Revision Fire District: King County Fire District# 25 School Districts: Renton & Issaquah Community Plan: Newcastle Drainage Subbasin: Lower Cedar River King County Pennits: Subdivision Complete Application Date: October 27, 2003 Threshold Detennination: Mitigated Detennination ofNonsignificance (MDNS) Date oflssuance: December 23, 2002 {Adoption Notice Nov. I 0, 2003) Page 3 of21 KC Pennit Contact: Karen Scharer, Project Manager II, Current Planning Section, LUSD Phone# 296-7114 or e-mail at karen.scharer@metrokc.gov 2. Except as modified below, the facts set forth in the King County Land Use Services Division's preliminary report to the Hearing Examiner for the January 22, 2004, public hearing are found to be correct and are incorporated herein by this reference. Said report is exhibit no. 60a in the hearing record. 3. Directly north, east and south of the eastern 11 acres of the subject property {proposed lot nos. 12-70) are three parcels proposed to be subdivided pursuant to the R-4 zoning classification. Those parcels are the subject ofDDES application nos. L03P0006 {Liberty Grove), L03P0005 (Liberty Grove Contiguous) and L03POOl 5 {Nichols Place). The adjacent property to the west is developed with single-family residences on larger lots. There is no currently proposed or anticipated developinent of the property to the west. 4. King County's "Transfer of Development Rights (TDR)" program is governed by Chapter 21A.37 of the King County Code. The TDR program establishes a property right which is separable from the fee-simple title to certain lands within King County, and provides a method for the transfer and utilization of that new right, which is colloquially known as a development right or "density credit." A density credit has a substantial market value. The underlying purpose of the TDR program is to allow for the movement of residential density from rural areas to urban areas of King County. The code is intended to provide, " ... an efficient and streamlined administrative review system to ensure that transfers of development rights to receiving sites are evaluated in a timely way and balanced with other County goals and policies, and are adjusted to the specific conditions of each receiving site." KCC 21A.37.0I0.2. Receiving sites are required to meet the provisions ofKCC 21A.37.030. Those requirements are that the receiving site: I. be within an unincorporated urban area, zoned R-4 or higher, or be within a potential annexation area; 2. be within a city where new growth is or will be encouraged, and where facilities and services exist or public investments in facilities and services will be made; or 3. be within RA-2.5 and RA-5 zoned parcels, subject to stringent criteria. The subject property is within the first category of eligible receiving sites listed in KCC 21A.37.030. Sites within the unincorporated urban growth area are not required to have •• LOI POO 16A & L03RE038 -Evcndc11 Revision Pagc4of21 any specific level of available facilities and services. Development approvals that utilize density credits must meet only those service criteria !bat apply generally to development of the number of dwelling units proposed on the site. King County Code chapter 21 A.12 governs densities and development standards in residential zones. The R-4 zone in the urban residential area allows for a maximum density of six dwelling units per acre, which may be achieved only tbrough the application ofresidential density incentives or transfers of development rights. KCC 2 IA.12.030.A. and B. I. When density credits are used, development shall comply with dimensional standards of the zone having a base density most comparable to the total approved density. KCC 21A.37.030.B. 5. The foregoing provisions of tbe King County Zoning Code are generally consistent with policies of the King County Comprehensive Plan governing residential land use. In particular, the Zoning Code provisions are generally consistent with: · Policy U-113, that new residential development in the Urban Growth Area should occur where facilities and services can be provided at the lowest public cost and in a timely fashion; Policy U-114, !bat the County seek to achieve an average zoning density of at least seven to eight homes per acre in the Urban Growth Area through a mix of densities, allowing for lower density zones lo recognize existing subdivisions with little or no opportunity for infill or redevelopment; Policy U-122 that supports increases in urban density through a rezone or a proposal to utilize density transfer, when the proposal will help resolve traffic, utility, parks or open space deficiencies in the immediate neighborhood. This proposal will improve traffic circulation in tbe area, will extend sewer service further into tbe urban area, and will provide recreation facilities and open space available to future residents on the subject property. Comprehensive Plan Policy U-120 addresses zoning changes to increase density, and is not material to this application for use of density credits consistent witb the existing zone classification. Likewise, policy U-121 applies to the evaluation ofrezone requests, and is not material to this application. 6. ODES and the Applicant have agreed upon right-of-way dedications and road improvements to mitigate tbe impacts of traffic which the Applicant's proposal will generate adjacent to and in the immediate vicinity of the proposed development. The dedications and improvements include additional right-of-way and construction on Southeast 136tb Street, from 156th Avenue Southeast to l 60tb Avenue Southeast, and shoulder improvements along the site frontage of I 60tb Avenue Southeast. 7. In order to provide safe walking conditions for students from this subdivision who will walk to school, improvements are necessary along existing right-of-way or upon right-of-way anticipated to become available through the development of subdivisions to tbe east of the subject property. The existing available right-of-way !bat can accommodate children walking to school is on 160th . • LO I POO 16A & L03RE038 -Evendell Revision Page S of21 Avenue Southeast to Southeast 135th Street, then east to 166th Avenue Southeast, and then south to the north boundary of the Liberty High School property. Alternatively, a route within future right-of-way may become available along Southeast 136th Street east from 160th Avenue Southeast to 162nd Avenue Southeast, then south to "5-lot subdivision" (a.k.a. Dickenson Plat), that would enable a connection to the southwest corner of the Liberty High School property. Improvements to either route could accomplish the provision of safe walking conditions for students who will walk to school from the subject property. 8. Removal of trees from this or other property being developed commonly subjects trees on adjacent properties to stress and increases the windthrow hazard. Trees that remain in an area which is substantially cleared present an increased risk to persons and property on and off the site of the remaining trees. There is no King County regulation applicable to the subject property that restricts clearing or tree removal to protect trees on adjacent properties from increased stress or risk of windthrow. The environmental review of this proposal did not identify impacts of clearing or tree removal as a significant adverse environmental impact of the proposal. 9. The Applicant's proposal includes wetland buffer averaging to enable proposed road construction and possibly facilitate lot development. The area shown for the provision of additional buffer to mitigate impacts oflost buffer is in the northeast corner of the plat, adjacent to 160th Avenue Southeast and Southeast 136th Street. Replacement buffer is proposed at approximately a 2: I ratio to lost buffer area. This would provide additional protection to the class 2 wetland, as required by KCC 21A.24.320.B. CONCLUSIONS: I. If approved subject to the conditions recommended below, the proposed subdivision will comply with the goals and objectives of the King County Comprehensive Plan, Subdivision and Zoning Codes, and other official land use controls and policies of King County. 2. If approved subject to the conditions recommended below, this proposed subdivision will make appropriate provision for the public health, safety and general welfare and for open spaces, for drainage ways, streets, other public ways, transit stops, potable water supply, sanitary wastes, parks and recreation, playgrounds, schools and school grounds, and safe walking conditions for students who only walk to school; and it will serve the public use and interest. 3. The conditions for final plat approval recommended below are in the public interest and are reasonable requirements to mitigate the impacts of this development upon the environment. 4. The dedications ofland or easements within and adjacent to the proposed plat, as recommended by the conditions for final plat approval or as shown on the proposed preliminary plat submitted by the Applicant, are reasonable and necessary as a direct result of the development of this proposed plat, and are proportionate to the impacts of the development. 5. This proposal is subject to the mitigated determination of environmental non-significance issued December 23, 2002 and adopted November 10, 2003. There was no appeal of the MONS or of its adoption for this proposal. Therefore, the conditions of that MONS must be implemented as conditions of this preliminary plat approval. •• LOl POOt 6A & L03RE038 -Evende11 Revision Page 6 of21 The conditions of the MDNS require substantial downstream drainage improvements (see condition no. I 9). Culvert and channel improvements required in the east drainage basin for a distance approximately I ,700 downstream from the plat, together with the change in flow volume resulting from development of the subject property, should be analyzed by the Applicant and reviewed by DDES to determine the impacts, if any, downstream from the improvements. Any such impacts should be addressed if it is necessary to do so to prevent flooding or other damage from occurring as a consequence of the required improvements. 6. The Applicant has negotiated for the purchase of 20 development rights, which would allow for an increase in the number oflots to be developed on the subject property to a total of 70. This development will be within the maximum density of 6 dwelling units per acre permitted in the R- 4 zone classification in the urban area, although it will be most comparable to the base density of the R-6 zone classification. The proposed development of the subject property, utilizing 20 density rights, is consistent with all applicable development standards and other provisions of the King County Code. 7. The road improvements proposed and agreed to by the Applicant, including those shown in the 70-lot preliminary plat revision received October I, 2003, as modified by the conditions recommended below, will reasonably mitigate the impacts of traffic generated by the proposed development. Due to the diversion of substantial additional traffic to the east leg of the intersection of Southeast 136th Street and 156th Avenue Southeast, substantial improvements to that intersection are necessary, and have been agreed to by the Applicant. 8. Safe walking conditions for children who walk to school from the subject property will be provided by using one of the alternatives for improvements incorporated into this proposal, set forth in finding no. 7 and reflected in the conditions of final plat approval. 9. There is no applicable provision of the King County Code to restrict the removal of trees in the course of the development of the subject property, or to protect trees on neighboring properties from increased stress and risk ofwindthrow. I 0. The proposed wetland mitigation, and buffer averaging for the class 2 wetland at an approximate 2:1 ratio for replacement buffer, meet the requirements of the King County code. The proposed replacement buffer area gives additional protection to the wetland. DECISION: The preliminary plat revision of Evendell, as received October 1, 2003, is APPROVED, subject to the following conditions for final plat approval: 1. Compliance with all platting provisions of Title 19 of the King County Code. 2. All persons having an ownership interest in the subject property shall sign on the face of the final plat a dedication which includes the language set forth in King County Council Motion No. 5952. 3. a. The plat shall comply with the maximum density (and minimum density) requirements of the R-4 zone classification. All lots shall meet the minimum dimensional requirements of the L01POOl6A & L03RE038-Evende11 Revision Page 7 of21 R-6 zone classification or shall be as shown on the face of the approved preliminary plat, whichever is larger, except that minor revisions to the plat which do not result in substantial changes may be approved at the discretion of the Department of Development and Environmental Services. b. The Applicant shall provide transfer of density credit documentation to ODES prior to final approval to allow transfer of a maximum of 20 density credits to achieve a maximum of 70 lots on the subject property. 4. All construction and upgrading of public and private roads shall be done in accordance with the King County Road Standards established and adopted by Ordinance No. 11187, as amended (1993 KCRS), subject to any variances that may be approved by the King County Road Engineer. 5. A Boundary Line Adjustment (BLA) shall be completed prior to final plat approval to except from the plat that portion of the 200 (approximate) feet on the far west that is not part of the proposed plat. Documentation demonstrating the resolution of boundary issues with the property to the south (Nichols Place) also shall be provided to DOES. 6. The Applicant must obtain the approval from the King County Fire Protection Engineer for the adequacy of the fire hydrant, water main, and fire flow standards of Chapter 17.08 of the King County Code. Joint Use Development Tract Has shown on the plat will provide access to Lots 28 and 29. Additionally, it is a future emergency vehicle access tract to and from 160th Avenue SE,.which the Applicant proposes to create in response to concerns raised by the City of Renton. The Applicant shall include proposed protocols for the construction and maintenance of Tract H, plus any related plat notes, with its engineering plans submittal, meeting the following standards: The emergency vehicle access to 160th Avenue SE shall have a minimum driving surface width of 20 feet, with an all-weather surface capable of supporting 25 tons. Any locking device shall be approved by the Renton Fire Department (KCFD # 25). Chains, cable or bollards will not be permitted. The gate shall be located at least 50 feet from 160th Avenue SE to allow space for fire apparatus to stop while opening the gate or to wait before entering the public roadway. If these conditions are not met any future residence constructed on Lots 28 and 29 will have to be sprinklered NFPA 130. These requirements concerning adequate fire and emergency access may be modified in a manner approved by the King County Fire Protection Engineer and King County Fire District no. 25. 7. Final plat approval shall require full compliance with the drainage provisions set forth in King County Code 9 .04. Compliance may result in reducing the number and/or location oflots as shown on the preliminary approved plat. Preliminary review has identified the following conditions of approval which represent portions of the drainage requirements. All other applicable requirements in KCC 9.04 and the Surface Water Design Manual (SWDM) must also be satisfied during engineering and final review. •• •• LOIP0016A & L03RE038-Evendell Revision Page 8 of22 a. Drainage plans and analysis shall comply with the 1998 King County Surface Water Design Manual and applicable updates adopted by King County. ODES approval of the drainage and roadway plans is required prior to any construction. b. Current standard plan notes and ESC notes, as established by ODES Engineering Review, shall be shown on the engineering plans. c. The following note shall be shown on the final recorded plat: "All building downspouts, footing drains, and drains from all impervious surfaces such as patios and driveways shall be connected to the permanent storm drain outlet as shown on the approved construction drawings # on file with ODES and/or the King County Department of Transportation. This plan shall be submitted with the application of any building permit. All connections of the drains must be constructed and approved prior to the final building inspection approval. For those lots that are designated for individual lot infiltration systems, the systems shall be constructed at the time of the building permit and shall comply with plans on file." d. The storrnwater detention design shall comply with the Level 2 or Level 3 Flow Control requirements, as applicable, per the 1998 King County Surface Water Design Manual (KCSWDM). (See SEPA conditions in condition no. 19.) e. The storm water control facility shall be located in a separate tract and dedicated to King County unless portions of the drainage tract are used for required recreation space in accordance with KCC 21A.14.180. 8. Drainage adjustment L02V0024 is approved for this project. All conditions of approval for this adjustment shall be met upon submittal of the engineering plans. 9. A drainage easement for the conveyance from the Tract N drainage facility to 1561h Ave SE shall be provided upon engineering plan submittal. I 0. The following road improvements are required to be constructed according to the 1993 King County Road Standards (KCRS): a. The internal access road from SE 13611, Street to the beginning of the internal loop road shall be improved to the urban subcollector standard, except that portion on the west side between Lot 11 and Lot 12 is not required to be improved with a sidewalk. b. The internal loop road shall be improved to the urban subaccess.road standard with sidewalks on the outside frontage of the loop road. c. SE 13611, Street (frontage and offsite) shall be dedicated, designed and improved in general conformance with the Preliminary Road Improvement Plan received 3/26/2002 with the Plat ofEvendell: LOIPOOl6A & L03RE038-Evende11 Revision Page 9 of22 The frontage from 158"' Ave NE to I 60"' Ave NE shall be improved to the urban onechalf street standard. Eighteen feet of additional right-of way shall be dedicated for this improvement. SE 136"' Street frontage from the west side of J.U.D.T. 'A' boundary to 158"' Ave NE shall be improved to the urban neighborhood collector standard; EXCEPT that no sidewalk construction is required on the north side. Twenty feet of additional right-of-way shall be dedicated for this improvement. SE 136"' Street from 1561h Ave SE to J.U.D.T. 'A' shall be improved to the urban neighborhood collector standard; EXCEPT that no sidewalk construction is required on the north side. Twenty-six feet of additional right-of-way shall be provided for this improvement. An additional 25-foot right-of-way radius is required at the southeast comer of 156'h Ave SE and SE 1361h Street. Striping for a second westbound lane shall be provided within the 150-foot widened section approaching 156th Avenue SE, in a manner to be worked out at the time of submission of engineering plans. d. 1601h Ave SE FRONTAGE: The 160"' Ave SE frontage shall be improved with an 8-foot paved shoulder on the west side. Adequate provisions for road drainage shall be provided. e. Tracts A,C,F,G,H, and I shall be improved to the joint use driveway standard per Section 3.01 of the KCRS. Tract A shall include an easement to King County for the maintenance of the Tract N drainage facility. Tract A shall be owned and maintained by the owners of Lots I and 2. f. Tracts B, D and E shall be improved to the private access tract standard per Section 2.09 of theKCRS. g. The Applicant shall revise the channelization that has been constructed in conjunction with the plat of Highland Estates (LOOP0009). These modifications to the channelization shall incorporate a revision of the currerit proposed painted 'island' to a southbound left tum lane with at least 60 feet of storage for left turning vehicles to (a) encourage the use of 156th Avenue SE in lieu of I 58th Avenue SE and 160th Avenue SE, and (b) mitigate the potential deficient condition that would result from southbound left turning vehicles making left turns from the southbound through lane, or using the painted island as a deceleration and refuge area while waiting for gaps in northbound traffic. Channelization and illumination plans must be submitted to King County Traffic Engineering Section for review and approval of the tum lane channelization. Modifications to the above road conditions may be considered according to the variance provisions in Section 1.08 of the KCRS. · I I. There shall be no direct vehicular access to or from I 60"' Avenue SE from those lots which abut this street. A note to this effect shall appear on the engineering plans and final plat. LOI POOi 6A & L03RE038 -Evendell Revision Page 10 of22 12. All utilities within proposed rights-of-way must be included within a franchise approved by the King County Council prior to final plat recording. 13. The Applicant or subsequent owner shall comply with King County Code 14.75, Mitigation Payment System (MPS), by paying the required MPS fee and administration fee as determined by the applicable fee ordinance. The Applicant has the option to either: (I) pay the MPS fee at final plat recording, or (2) pay the MPS fee at the time of building permit issuance. If the first option is chosen, the fee paid shall be the fee in effect at the time of plat application and a note shall be placed on the face of the plat that reads, "All fees required by King County Code 14.75, Mitigation Payment System (MPS), have been paid." If the second option is chosen, the fee paid shall be the amount in effect as of the date of building permit application. 14. The proposed subdivision shall comply with the Sensitive Areas Code as outlined in KCC 21 A.24. Preliminary plat review has identified the following specific requirements that apply to this project. All other applicable requirements from KCC 21 A.24 shall also be addressed by the Applicant. a. This site contains a Class 2 wetland. The majority of the wetland will be protected from alteration during and after construction, with a 50-foot wide buffer around the wetland boundary. An additional 15-foot building setback is required beyond the edge of the buffer. b. A maximum of200 square feet of wetland will be filled for construction of SE 136th Street. Mitigation shall consist of at least 400 square feet of wetland enhancement to degraded portions of the existing wetland. c. Road improvements for SE 136th Street and 160th Avenue SE will eliminate 6,989 square feet of wetland buffer. Mitigation shall consist of providing replacement buffer in the northeast portion of the site at approximately a 2: I ratio to provide additional protection for the wetland pursuant to KCC 21A.24.320B. Reduced impact will result in reduced mitigation. d. The proposed sewer main within the SE 136th Street right-of-way will intrude into the wetland buffer along with the road improvements. In order to protect wetland hydrology: (I) the sewer line shall be installed during the dry season (June through September), and (2) the design shall incorporate the use of pipe bed dams ofbentonite or other material at intervals to preclude draining possible subsurface water flows through the gravel pipe bedding. e. Downstream drainage improvements to existing culverts and stormwater conveyances required through the SEPA MDNS shall cause no adverse alteration to existing wetlands or streams in the vicinity of the drainage improvements. f. Critical Areas staff shall review engineering plans for the plat and sewer main for conformance with these requirements. 15. The following note shall be shown on the final engineering plan and recorded plat: LOI POO 16A & LOJRE038 -Evendell Revision RESTRICTIONS FOR SENSITIVE AREA TRACTS AND SENSITIVE AREAS AND BUFFERS Page It of22 Dedication of a sensitive area tract/sensitive area and buffer conveys to the public a beneficial interest in the land within the tract/sensitive area and buffer. This interest includes the preservation of native vegetation for all purposes that benefit the public health, safety and welfare, including control of surface water and erosion, maintenance of slope stability, and protection of plant and animal habitat. The sensitive area tract/sensitive area and buffer imposes upon an present and future owners and occupiers of the land subject to the tract/sensitive area and buffer the obligation, enforceable on behalf of the public by !(jog County, to leave undisturbed alJ trees and other vegetation within the tract/sensitive area and buffer. The vegetation within the tract/sensitive area and buffer may not be cut, pruned, covered by filJ, removed or damaged without approval in writing from the King County Department of Development and Environmental Services or its successor agency, unless otherwise provided by law. The common boundary between the tract/sensitive area and buffer and the area of development activity must be marked or otherwise flagged to the satisfaction of King County prior to any clearing, grading, building construction or other development activity on a lot subject to the sensitive area tract/sensitive area and buffer. The required marking or flagging shalJ remain in place until all development proposal activities in the vicinity of the sensitive area are completed. _ No building foundations are allowed beyorid the required 15-foot building setback line, unless otherwise provided by law. 16. Suitable recreation space shall be provided consistent with the requirements KCC 21A.14.180 and KCC 21A.14.190 in providing sport court[s], children's play equipment, picnic table(s], benches, etc .. a. A detailed recreation space plan (i.e., landscape specs, equipment specs, etc.) shall be submitted for review and approval by DOES and l(jng County Parks prior to or concurrent with the submittal of the engineering plans. This plan shall comply with Ordinance# 14045. b. A performance bond for recreation space improvements shall be posted prior to recording of the plat. 17. A homeowners' association or other workable organization shall be established to the satisfaction ofDDES which provides for the ownership and continued maintenance of the recreation, open space and/or sensitive area tract(s). 18. Street trees shall be included in the design of all road improvements, and shall comply with Section 5.03 of the KCRS and KCC 21A.16.050: a. Trees shall be planted at a rate of one tree for every 40 feet of frontage along all roads. Spacing may be modified to accommodate sight distance requirements for driveways and intersections. · •• LOI POO 16A & L03RE038 -Evendell Revision ·Page 12of22 b. Trees shall be located within the street right-of-way and planted in accordance with Drawing No. 5-009 of the 1993 King County Road Standards, unless King County Department of Transportation determines that trees should not be located in the street right-of-way. c. If King County determines that the required street trees should not be located within the right-of-way, they shall be located no more than 20 feet from the street right-of-way line. d. The trees shall be owned and maintained by the abutting lot owners or the homeowners association or other workable organization unless the County has adopted a maintenance program. Ownership and maintenance shall be noted on the face of the final recorded plat. e. The species of trees shall be approved by DDES iflocated within the right-of-way, and shall not include poplar, cottonwood, soft maples, gum, any fruit-bearing trees, or any other tree or shrub whose roots are likely to obstruct sanitary or storm sewers, or that is not compatible with overhead utility lines. f. The Applicant shall submit a street tree plan and bond quantity sheet for review and approval by DDES prior to engineering plan approval. g. The street trees must be installed and inspected, or a performance ·bond posted prior to recording of the plat. If a performance bond is posted, the street trees must be installed and inspected within one year of recording of the plat. At the time of inspection, if the trees are found to be installed per the approved plan, a maintenance bond must be submitted or the performance bond replaced with a maintenance bond, and held for one year. After one year, the maintenance bond may be released after DDES has completed a second inspection and determined that the trees have been kept healthy and thriving. A landscape inspection fee shall also be submitted prior to plat recording. The inspection fee is subject to change based on current County fees. 19. The following have been established by SEPA as necessary requirements to mitigate the adverse environmental impacts of this development. The Applicants shall demonstrate compliance with these items prior to final approval. a. East Drainage Basin: The 160th Ave SE downstream conveyance system shall be upgraded to provide for the I 00- year storm capacity. Downstream driveway culverts/ditches and a cross-culvert under 160th Avenue SE shall be improved as follows: Culverts P-117 and P-116 on the west side of 160th Avenue SE, cross-culvert P-115, and culverts P-114 and P-113 on the east side of 160th A venue SE shall be improved as needed. The culvert designations are according to the Level 3 Downstream Drainage Analysis by Haozous Engineering dated August 26, 2002. To address a related localized flooding condition, bank and channel stabilization are also required in the unopened right-of-way for 162nd Avenue SE, in the vicinity of the easterly line of Lot 12, Rich Lea Crest (address 16046 SE 142•• Street). It is estimated that stabilizing and LOJPOOJ6A & L03RE038-Evendell Revision Page 13 of21 re-grading approximately 50 to I 00 feet of channel, east of I 6046 SE I 42"d Street, will be adequate to resolve flooding that has occurred in the past location. The culverts and channel described are located from the south site boundary to a distance of approximately I, 700 feet downstream. Level 2 Flow Control design is required for the proposed stormwater detention facility. A factor of safety of 5 to 15 percent, determined by the design engineer, shall be required for detention storage volumes. b. West Drainage Basin: The stormwater detention facilities shall be designed to the Level 3 Flow Control Standard as described in the 1998 King County Surface Water Design Manual (KCSWDM). As an option, Level 2 Flow Control with downstream improvements can be proposed according to Core Requirement 2 of the KCSWDM. The minimum Flow Control Standard shall be · Level 2. A factor of safety of 5 to 15 percent, determined by the design engineer, shall be required for detention storage volumes. The downstream impacts of the I, 700 feet of conveyance improvements shall be reviewed by the developer's engineer, and any recommendations necessary to prevent flooding or other damage from occurring as a consequence of the required conveyance improvements shall be included with the plans for review by DDES. School Mitigation Fees 20. Lots within this subdivision east ·of 1581h Avenue SE are subject to King County Code 21A.43, which imposes impact fees to fund school system improvements needed to serve new development. As a condition of final approval, fifty percent (50%) of the impact fees due for the plat shall be assessed and collected immediately prior to recording, using the fee schedules in effect when the plat receives final approval. The balance of the assessed fee shall be allocated evenly to the dwelling units in the plat and shall be collected prior to building permit issuance. School Walkways 21. A pedestrian access easement between 158'h Place SE and 1601h Avenue SE shall be provided over either Tract Hor L (as shown in Exhibit 62). The easement shall have a minimum IO foot width and be improved with a 5 foot wide paved surface. 22. The Applicant, individually or in conjunction with other developers, shall construct an off-site walkway to Liberty High school from the site. The walkway shall be constructed within the right-of-way from 160th Ave SE, east along SE 135th Street to 166th Ave SE, and south to Liberty High School at SE 136th Street, or via alternative right-of-way and easements that become available and are approved by DDES. One acceptable alternative would be to use future right-of-way of Southeast 136th Street and 162nd Avenue Southeast to connect with the sidewalk improvement of "five Jot subdivision," and through the plat of "five lot subdivision"/LOOP0023 to the southwest gate of Liberty High School. The walkway shall be designed and constructed in •• L01P0016A &. L03RE038-Evendell Revision Page 14 of22 accordance with the 1993 King County Road Standards and shown on the engineering plans for DDES review and approval. Any surfacing alternative from the King County Road Standards (KCRS 3.09) may be submitted for approval through a road variance application. ORDERED this 4th day of February, 2004. TRANSMITIED this 4th day of February, 2004, to the following parties and interested persons of record: 4 Creeks UAC Scott D. Baker Marshall Brenden Attn: Claudia Donnelly 7018 47th Ave. NE 18225 SE I 28th P.O. Box 3501 Seattle WA 98115 Renton WA 98059 Renton WA 98056 Ronda Bryant Marilyn Carlson Ronald Coffin 15406 SE 136th Street 13616-156th Avae. SE 16015 SE 135thPI. Renton WA 98059 Renton WA 98059 Renton WA 98059-6828 Michael Rae Cooke Mark Costello Robert Darrow 13125158thAve.SE 13012 158th Avenue SE Haozous Engineering Renton WA 98059 Renton WA 98059 13428 -45th Court Mukilteo WA 98275 Shirlene Day Roger Dorstad Kathy Graves 14412 -167th Pl. SE Evergreen East Realty 13020 -160th Ave. SE Renton WA 98059 PO Box 375 Renton WA 98059 Redmond WA 98073 Michelle Hagerman Stephen & Yvonne Hanson Valerie Hemnes 13710 156th Ave. SE 15611 SE 138thPI. 15627 SE 139th Pl. Renton WA 98059 Renton WA 98059 Renton WA 98059-7422 Victor & Gwendolyn High Edward & June Hill Edward & Nancy Hilton 13405 -158thAve. SE 13527 156th St SE 13414 -158th Ave. SE Renton WA 98059 Renton WA 98059 Renton WA 98059 Kurt Hughes Fred & Helga Jaques Leonard J. Johnston 19112 NE 146th Way 13114-158th Ave. SE 16016 SE 135th Woodinville WA 98072-6361 Renton WA 98059 Renton WA 98059 LO I POOi 6A & L03RE038 -Evendell Revision Diane Kazele 15657 SE 137th Pl. Renton WA 98059 Lakeridge Development Inc. Attn: Wayne Jones Jr. P.O. Box 146 Renton WA 98057-0146 Rebecca Lind City of Renton, EDNSP 1055 S. Grady Way Renton WA 98056 Fred & Gloria Martin 13019-160thAve.SE Renton WA 98059 Bill Mokin 14404 -162nd Ave. SE Renton WA 98059 John Nanney 16169 SE 146th Pl. Renton WA 98059 Gary Norris Gary Struthers & Associates 3150 Richards Road #100 Bellevue WA 98005 Richard & Anita Oliphant 16519 SE 145th St. Renton WA 98059 David Rockabrand Four Creeks UAC 11427 162ndAve. SE Renton WA 98059 Geneva Scholes 12924 -158th Ave. SE Renton WA 98059 Don· & Diane Kezele 15657 SE 137th Pl. Renton WA 98059 Joann Lee 13802 -160th Ave. SE Renton WA 98059 Steve Lyman 14505 -160th Ave. SE Renton WA 98059 Linda Matlock WA State Ecol. Dept./WQSW Unit PO Box 47696 Olympia WA 98504-7696 Eleanor Moon KC Executive Horse Council 12230 NE 61st Kirkland WA 9803 3 Kathy Nelson Transportation Dept. 805 -2nd Ave. S. Issaquah WA 98027 Florence Nott 15915 SE 134th Pl. Renton WA 98059-6832 David Petrie 811 S. 273rd Ct. Des Moines WA 98198 Marsha Rollinger 15646 SE 138th Pl. Renton WA 98059 Curtis Schuster KBSIIl,LLC 12320 NE 8th St., Ste. 100 Bellevue WA 98005 Page 15 of22 Duana Kolouskova Johns Monroe Mitsunga PLLC 1500-114th Avenue SE, #102 Bellevue WA 98004 Tim & Gina Lex 13116 -158th Ave. SE Renton WA 98059 Jerry Marcy P.O. Box 575 Seattle WA 98111 Jim McDougal 14502 167th Pl. SE Renton WA 98059 Steven & Peri Muhich 13420 -160th Ave. SE Renton WA 98059 Sally Nipert 14004 -156th Ave. SE Renton WA 98059 Dave Nyblom PMB 129 4820 NE 4th St., Ste. IOI Renton WA 98059-4845 David & Georgia Platt 510 Panoramic Dr. Camano Island WA 98282 Mike Romano Centurion Development Services 22617 8th Drive SE Bothell WA 98021 Charles & Viola Scoby 13112 -158th Ave. SE Renton WA 98059-8531 LOI POOi 6A & L03RE038 -Evendell R •• •• Page 16 of22 Seattle KC Health Dept. Karen & Jeffrey Sidebotham Daniel B. Slaton E. Dist. Environ. Health 13004 -158th Ave. SE 15315 SE 133rd Court 14350 SE Eastgate Way Renton WA 98059 Renton WA 98059 Bellevue WA 98007 Howard Stansbury Peggy Streit Penny Thorbeck Centurion Development 13512 -160th Ave. SE 15650 SE 138th Pl. 22617 -8th Dr. SE Renton WA 98059 Renton WA 98059 Bothell WA 98021 David Watler Alex Weitz Mr. & Mrs. Bob Wilmot 15635 SE 138th Pl. 15646 SE 138th Pl. 13900 -160th Ave. SE Renton WA 98059 Renton WA 98059 Renton WA 98059 Kurt Wjlson Alvin Wolberg Harold & Eleanor Zeek Hrubour Homes 16021 SE 136th St. 16612 SE 145th St. 1010 South 336th Street #305 Renton WA 98059 Renton WA 98059 Federal Way WA 98003 Greg Borba Laura Casey Kim Claussen DDES/LUSD DDES/LUSD DDES/LUSD MS OAK-DE-0100 Wetland Review Current Planning MS OAK-DE-0100 MS OAK-DE-0100 Kristen Langley Anne Noris Carol Rogers DDES/LUSD Clerk of Council LUSD/CPLN Land Use Traffic MS KCC-CC-1025 MS OAK-DE-0100 MS OAK-DE-OIOO Karen Scharer Richard Warren Larry West DDES/LUSD Transportation Planner DDES/LUSD Current Planning King Co. Dept of Transportation Geo Review MS OAK-DE-0100 MS KSC-TR-0317 MS OAK-DE-OIOO Bruce Whittaker DDES/LUSD Pre!. Review Engineer MS OAK-DE-0100 NOTICE OF RIGHT TO APPEAL In order to appeal the decision of the Examiner, written notice of appeal must be filed with the Clerk of the King County Council with a fee of $250.00 (check payable to King County Office of Finance) on or before February 18, 2004. Ifa notice of appeal is filed, the original and six (6) copies ofa written appeal statement specifying the basis for the appeal and argument in support of the appeal must be filed with the Clerk of the King County Council on or before February 25, 2004. Appeal statements may refer only to facts contained in the hearing record; new facts may not be presented on appeal. LOIPOOJ6A & L03RE038-Evendell Revision Page 17 of22 Filing requires actual delivery to the Office of the Clerk of the Council, Room I 025, King County Courthouse, 516 3n1 Avenue, Seattle, Washington 98104, prior to the close of business (4:30 p.m.) on the date due. Prior mailing is not sufficient if actual receipt by the Clerk does not occur within the applicable time period. The Examiner does not have authority to extend the time period unless the Office of the Clerk is not open on the specified closing date, in which event delivery prior to the close of business on the next business day is sufficient to meet the filing requirement. If a written notice of appeal and filing fee are not filed within fourteen (14) calendar days of the date of this report, or if a written appeal statement and argument are not filed within twenty-one (21) calendar days of the date of this report, the decision of the hearing examiner contained herein shall be the final decision of King County without the need for further action by the Council. MINUTES OF THE MARCH 6 and I 0, 2003 AND JANUARY 22, 2004 PUBLIC HEARING ON DEPARTMENT OF DEVELOPMENT AND ENVIRONMENTAL SERVICES FILE NO. LOIP0016 AND LOITY401; L03RE038 James N. O'Connor was the Hearing Examiner in this matter. Participating in the hearing were Karen Scharer, Kristin Langley, Bruce Whittaker and Laura Casey, representing the Department; Mike Romano, representing the Applicant; Marsha Rollinger and Gwendolyn High, representing the Intervenors; and Mark Heckert, Gary Norris, Scott Baker, Michael Rae Cooke, David Rockabrand, Dave Petry, Michelle Hagerman, Sally Nipert, Diane Kazele, Alex Weitz, Fred Jaques, Jim McDougal, John Nanney, Bill Mokin, Anita Oliphant, Vanessa Burris, June Hill, Rhonda Bryant, and Kristy Hill. The following exhibits were offered and entered into the record: Exhibit No. I Exhibit No. 2A 2B Exhibit No. 3A 3B Exhibit No. 4 Exhibit No. 5 Exhibit No. 6 DDES combined file LO 1 TY 40 I & LO I POO 16, application filed and dated July 6, 2001 DDES application for land use permit(s) LOITY401 & L01P0016, application dated July 6, 2001 Zone reclassification application and justification questionnaire with revision received September 6, 2001 DDES preliminary report prepared 02/20/03 with attachments as follow: I. Map ofrezone from R-4 to R-6 2. Reduced copy ofR-6-70 lot preliminary plat 3. Reduced copy of R-4 -alternative 46 lot plat 4. Density calculations for R-6 plat 5. City of Renton January 20, 2003, letter 6. City of Renton June 15, 2001 letter 7. Certificate of water availability dated May 30, 200 I 8. School information dated July 12, 2001 9. SWM adjustment approval for L02V0024 dated October 17, 2002 DDES addendum report with corrections and additional information regarding schools serving the property, prepared 02/27/03 Revised environmental checklist received October 14, 2002 Mitigated determination of non-significance dated December 23, 2002 Affidavit of posting indicating posting dates of October 3 and 4, 2001. LOIPOOJ6A & L03RE038-Evendell Revision ' Page 18 of22 Exhibit No. 7 A 7B Exhibit No. 8 Exhibit No. 9 Exhibit No. IO Exhibit No. 11 Exhibit No. 12 Exhibit No. 13 Exhibit No. 14 Exhibit No. 15 Exhibit No. 16 Exhibit No. 17 Exhibit No. 18 Exhibit No. 19 Exhibit No. 20 Exhibit No. 21 Exhibit No. 22 Exhibit No. 23 Exhibit No. 24 Exhibit No. 25 Exhibit No. 26 Exhibit No. 27 Exhibit No. 28 Exhibit No. 29 Exhibit No. 30 Exhibit No. 31 Exhibit No. 32 Exhibit No. 33 Exhibit No. 34 Exhibit No. 35 Exhibit No. 36 Exhibit No. 37 Exhibit No. 38 Exhibit No. 39 Exhibit No. 40 Exhibit No. 41 Exhibit No. 42 a b Site plan (70 lot preliminary plat map) received March 26, 2002 Alternative site plan ( 46 lot preliminary plat map) received March 26, 2002 Assessors maps (4) for SE 14-23-05 revised 02/23/95, NE 14-23-05 revised 04/05/93, NW 14-23-05 revised 10/92, and SW 14-23-05 revised 07/07/97 Traffic impact analysis by Garry Struthers Associates, Inc. dated June 28, 2001 Traffic memo dated January 29, 2002, from Garry Struthers Assoc., Inc. Preliminary technical information report dated June, 2001, by Haozous Eng., P.S. Level 3 downstream drainage analysis by Haozous Eng., P.S., dated August 26, 2002 Addendum (6 pages plus cover) to the level-three study dated December 5, 2002 Wetland evaluation and delineation report, wildlife habitat evaluation and compensatory wetland mitigation plan by Habitat Technologies, dated May 15, 2001 Addendum to wetland/stream/wildlife report dated October 28, 2002 City of Renton three-page certificate of sewer availability dated 6/15/01 Jaques, Fred & Helga email dated November I, 200 I Carlson, Marilynn letter dated November 7, 2001 Revised alternative R-4 plat density calculations received 3/26/02 Petition from Gwendolyn High (8 pg.+ cover), received September 23, 2002 City of Renton letter received January 22, 2003, with attachments (4 pgs.) Letter from G. High & M. Rollinger for Citizens Alliance for a Responsible Evendell (CARE) dated April 5, 2002 with attachments (60 pgs. + cover) G. High and M. Rollinger, CARE petition to intervene filed on 2/18/03 DDES planning map (created 7/1/2003) prepared 2/20/2003 showing new development planned in the immediate vicinity Letter from Greg Zimmerman, City of Renton, dated March 05, 2003 (2/12/03 memo attached) Certificate of Transportation Concurrency received July 6, 2001 Topographic map provided by City of Renton (aerial photography taken Winter, 1996) subject propertY in conjunction with Highland Estates Article from King County Journal, "Give Us Some Space, Firefighters Say ... " 02/27/2003 Transportation service areas 2000 map-KCDDES, February, 2001 Community action strategies sub-area priority ranking map -KCDOT, February, 2001 Assessors map of East Renton/Briarwood area with coloring Proposed but not entered into the record -area map showing nesting sites Online permit details -DDES website printouts (18 pgs.) Notice of application for the Bales Annexation and pre-zone application, dated January 15, 2003 -City of Renton Letter from Scott D. Baker, Consulting Arborist dated 2/8/03 Tree retention/protection buffer site plan alternatives C.A.R.E. households list (2 pg) Letter from Four Creeks Unincorporated Area Council dated March 5, 2003 Tree loss and possible ground water contamination depiction Sign-in and time donation sheet (3 pg) dated March 6, 2003 Transportation concurrency diagrams for 200 I, 2002 & 2003 Letter (2 pg) from Don & Janice Milbrath dated March 3, 2003 Letter (2 pg) from Kristy J. Hill dated March 6, 2003 LO I POO 16A & L03RE038 -Evendell Revision Page 19of22 Exhibit No. 43 C d e f g h J Exhibit No. 44 a b C d e f. Exhibit No. 45 a b C d e Letter (2 pg) from Edward and June Hill dated March 6, 2003 Letter (I pg) from Charles W. Scoby, Viola M. Scoby, and Geneva D. Scholes dated March I, 2003 Letter (I pg) from Laurie A. Hindes dated February 26, 2003 Letter (2 pg) from Mark Costello dated March 4, 2003 Letter (I pg) from Eloise and Claude Stchowiak dated March 6, 2003 Letter (3 pg) from Bruce and Joyce Osgoodby dated Feb. 21, 2003, and Mar, 6, 2003 Letter (I pg) from Richard Savage (undated) Letter (I pg) from Dan & Lynn Peterson, also signed by Fred & Helga Jaques (undated} Letter (I pg) from John Nanney dated March 6, 2003 Letter (I pg) from Linda Williams dated March 5, 2003 Letter (I pg) from Rodney S. Stewart dated March 5, 2003 Letter (I pg) from Edward A. Schultz dated March 4, 2003 Letter (I pg) from Joseph Matsudaira dated March 5, 2003 Letter (I pg) from Brenda Matsudaira dated March 5, 2003 Letter (I pg) from Richard & Anita Oliphant dated March 5, 2003 Letter (2 pg) from Mark Costello dated March 4, 2003 Letter (2 pg) from Jeff & Karen Sidebotham (undated) Letter (I pg) signed by Nancy & Edward Hilton dated March 6, 2003 Memo (4 pg) from Michael Rae Cooke dated March 4, 2003, with attached resident survey sheet, error notes, and April 3, 2002, memo and attachments (8 pg) to King County Surface Water and Land Management The following items were entered at the March I 0, 2003, continued hearing: ExhibitNo. 46 Exhibit No. 4 7 Exhibit No. 48 Exhibit No. 49 Exhibit No. 50 Exhibit No. 51 Exhibit No. 52 Exhibit No. 53 Exhibit No. 54 Exhibit No. 55 Exhibit No. 56 a b C d e f g Photos (9) provided by Anita Oliphant with commentary (undated) Letter (3 pg) from Bruce and Joyce Osgoody dated February 21, 2003 Letter (I pg} from Marilynn Carlson dated March 9, 2003 Letter (2 pg) from Kristy Hill dated March 6, 2003 Letter (I pg) from Marsha Rollinger (undated) Letter (I pg) from Joseph Bostjancic dated March 5, 2003 Memo (I pg) from Nick Gillen dated March 7, 2003 Copy of table #3 from the 2002 Issaquah school plan showing "Projected Capacity to House Sudents" Memo (I pg) from Mark Heckert, Habitat Technologies, dated March I 0, 2003 Gwendolyn High's testimony of March 6, 2003 with cover letter dated March 10, 2003 noting correction Letters from: Donald & Diane Kezelle (2 pg) -undated Vanessa Burris (I pg) Carolyn Ann Buckett (I pg) Ronda ·Bryant (3 pg) dated March I 0, 2003 Michael Rae Cooke (7 pg) dated 3/8/02 Marsha Rollinger (I pg) undated Sally Nipert (I pg) dated March 6, 2003 •• LOIPOOl6A & L03RE038-Evende11 Revision Page 20 of21 h i Exhibit No. 57 Exhibit No. 58 Shirley Day (I pg) dated March 6, 2003 Bill and Donna Mokin (2 pg) dated March 6, 2003 Photos of hawk (2) DDES revised recommendation/additional conditions dated 3/10/03 The following exhibits were entered into the record at the January 22, 2004, hearing for the Evendell Revision: Exhibit No. 59 Exhibit No. 60a Exhibit No. 61 Exhibit No. 62 Exhibit No. 63 Exhibit No. 64 Exhibit No. 65 Exhibit No. 66 Exhibit No. 67 Exhibit No. 68 Exhibit No. 69 Exhibit No. 70 Exhibit No. 71 Exhibit No. 72 Exhibit No. 73 Exhibit No. 74 Exhibit No. 75 Exhibit No. 76 Exhibit No. 77 Department of Development and Environmental Services Application for major plat revision, filed 10/1/03 Department of Development and Environmental Services preliminary report for the January 22, 2004, public hearing on file no. L03RE038, with attachments: I. 70-Iot plat layout 2. Density calculations 3. Intent to sell and purchase density credits, dated 11 /26/03 4. SEPA Adoption Notice, dated 11/10/03 5. Inquiry to Issaquah School District, dated 05/23/03 6. Certificate of Water Availability, dated 9/18/03 7. Letter from City of Renton, dated 11/19/03 8. Letter from City of Renton re: Sewer Extension, dated 11/26/03 9. Transportation Concurrency (e-mail of9/03/03 & Certificate# 01305) I 0. SWM adjustment approval for file no. L02V0024, dated I 0/17/02 Department of Development and Environmental Services corrections to the Preliminary Report to the Hearing Examiner, dated 1/22/04 Site Plan {plat map) for 70 lots, received October 1, 2003. Notice of Application, Hearing & Recommendation, 11/10/03 Affidavit of Posting indicating November 3, 2003 as date of posting and November 6, 2003, as the date the affidavit was received by the Department of Development and Environmental Services Walkway study prepared by dmp, inc., dated 8/18/03 School walking route analysis, annotated by DDES, prepared 1/21/04 3/10/03 and 3/04/03 emails from Issaquah School District and Jeremy Febus re: LOOP0023 plat conditions for school walkways Examiner's recommendation to the Council-LOITY401 & LOIP0016, dated 3/28/03 Ordinance no. 14694 denying reclassification to R-6 under file LOITY401 Ordinance no. 14695 approving the 46 lot plat of Evendell . Jaques, Fred & Helga, e-mail regarding density, traffic, and infrastructure inadequate to support increase in density, received 1/20/04 · Shirley A. Gaunt-Smith, note re: concerns, received 1/20/04 Colored copy of plat map SEPA MDNS for Liberty Grove Contiguous, file no. L03TY401 & L03P0005, dated 12/16/03 SEPA MDNS application for Liberty Grove, file no. L03TY 403 & L03P0006, dated 12/16/03 C.A.R.E. response: Evendell plat revision, L03RE038, dated 1/22/04 C.A.R.E. households list LOJ POO 16A & L03RE038 -Evendc:11 Revision Page 2) of21 Exhibit No. 78 Exhibit No. 79 Exhibit No. 80 Exhibit No. 81 Exhibit No. 82 Exhibit No. 83 Exhibit No. 84 Exhibit No. 85 Exhibit No. 86 Exhibit No. 87 Exhibit No. 88 Exhibit No. 89 Exhibit No. 90 Exhibit No. 91 Exhibit No. 92 Exhibit No. 93 Exhibit No. 94 Exhibit No. 95 Exhibit No. 96 Exhibit No. 97 Exhibit No. 98 Exhibit No. 99 Exhibit No. 100 Exhibit No. 10 I Exhibit No. I 02 Exhibit No. I 03 ' ' 3/28 and 4/10/00 press releases re: Transfer of Development Credits Six-year transit development plan showing urban centers, dated February, 2002 King County General Government Budget Advisory Task Force report, dated 6/25/03 A Joint City Position statement for the King County Budget Advisory Task Force Message to employees from King County Executive Ron Sims, re: budget advisory task force, dated 6/09/03 King County Council, Budget & Fiscal Management Committee Capital Budget Panel -2004 CIP Budget Overview Article entitled "Facing the Challenges -In Transportation" by Harold Taniguchi dated 11.94 Transportation Service Areas 2000 High accident locations report no. 16, dated July 2003 King County transportation concurrency maps 2001, 2002 and 2003 Transportation concurrency map, level of service standards status, dated 3/07 /02 2003 Annual Growth Report -exce,pts King County Benchmarks Report 2003: Land Use -exce,pts Buildable Lands Report of 8/29/02 -exce,pts State, county, city populations report from OFM Forecasting, State of Washington Renton Strategic Planning Department -staff reports of 6/03, 9/23, I 0/0 I and 10/10/03 · Renton Planning Commission recommendation of October 22, 2003 Renton Ordinance no. 5026 . Renton City Council regular meeting minutes of November 24, 2003 DOES revised recommendations/additional conditions for file no. LOIPOOl6, 70-lot plat, dated 3/10/03 Photographs (5 color copies) of tree damage to Kezele and Thorbeck Homes No exhibit entered Photographs (4 color copies) taken by Diane Kezele Letter to the Hearing Examiner from Edward and June Hill (undated) Letter to the Hearing Examiner from Kristy J. Hill dated January 21, 2004 Letter to the Hearing Examiner from Anita and Richard Oliphant dated 01/22/04 JOC:ms/gao LOIP0016A-L03RE038 RPT ,. ' L01P0016 Bruce Whittaker DOES/LU SD Pre!. Review Engineer MS OAK·DE-0100 December 18, 2003 OFFICE OF THE HEARING EXAMINER KING COUNTY, WASHINGTON 400 Yesler Way, Room 404 Seattle, Washington 98104 Telephone (206) 296-4660 Facsimile (206) 296-1654 NOTICE OF HEARING SUBJECT: Department of Development and Environmental Services File No. L01P0016/L03RE038 Proposed Ordinance No. 2003-0490 EVENDELL REVISION Preliminary Plat Revision Request Location: Lying South of Southeast 1361h Street between 1561h Avenue Southeast And 1601h A venue Southeast Applicant: U.S. Land Development Association/Centurion, represented by Howard Stansbury 2261 7 -gth Drive Southeast Bothell, Washington 98021 Telephone: (425) 486-2563 King County: Land Use Services Division, represented by Karen Scharer 900 Oakesdale A venue Southwest Renton, WA 98055-1219 Telephone: (206) 296-7114 Facsimile: (206) 296-7055 A public hearing has been scheduled on this proposal for 9:30 a.m. on Thursday, January 22, 2004, in the Department of Development and Environmental Services Hearing Room, 900 Oakesdale Avenue SW, Renton, Washington. A pre-hearing conference may be requested by any party prior to January 8, 2004. ("Parties" include the applicant, property owner and responsible County agency. Other persons likely to be directly and substantially affected by County action on this proposal may request "party" status by submitting an intervenor petition to the Hearing Examiner.) Hearing Examiner Rule VIII, which is included with this notice, governs pre-hearing conferences. If you are a party to this proceeding and believe a pre-hearing conference should be held prior to the public hearing, submit your written request with specific reasons in support thereof to the King County Hearing Examiner. • LO I POO l 6/L03RE038-Evendell Revision 2 To promote efficiency in the conduct of hearings and to eliminate surprise, pre-hearing exchange of information is encouraged by the Rules of Procedure. Any person is entitled to receive, at cost, copies of documents in the County file. Application may also be made to the Examiner to direct exchange of other significant information by any person or agency. Mediation of disputes is available pursuant to King County Code Section 20.24.330 and Rules of Mediation. Please contact the Office of the Hearing Examiner if you need a copy of the Rules of Procedure or Rules of Mediation, or obtain the Rules by visiting our web site at www.metrokc.gov/mkcc/hearingexaminer. ORDERED this 18th day of December, 2003. King County Hearing Examiner TRANSMITTED this 18th day of December, 2003, to the following parties and interested persons: 4 Creeks UAC Scott D. Baker Marshall Brenden Attn: Claudia Donnelly 7018 47th Ave. NE 18225 SE 128th P.O. Box 3501 Seattle WA 98115 Renton WA 98059 Renton WA 98056 Ronda Bryant Marilyn Cartson Ronald Coffin 15406 SE 136th Street 13616 -156th Avae. SE 16015 SE 135th Pl. Renton WA 98059 Renton WA 98059 Renton WA 98059-6828 Michael Rae Cooke Mark Costello Robert Darrow 13125158th Ave. SE 13012158th Avenue SE Haozous Engineering Renton WA 98059 Renton WA 98059 13428 -45th Court Mukilteo WA 98275 Shirlene Day Roger Dorstad Kathy Graves 14412 -167th Pl. SE Evergreen East Realty 13020 -160th Ave. SE Renton WA 98059 PO Box375 Renton WA 98059 Redmond WA 98073 Michelle Hagerman Stephen & Yvonne Hanson Mark Heckert 13710 156th Ave. SE 15611 SE 138th Pl. Habitat Technologies Renton WA 98059 Renton WA 98059 606 E Main St. Puyallup WA 98371-1088 Valerie Hemnes Victor & Gwendolyn High Edward & June Hill 15627 SE 139th Pl. 13405 -158th Ave. SE 13527 156th St. SE Renton WA 98059-7422 Renton WA 98059 Renton WA 98059 Edward & Nancy Hilton Kurt Hughes Fred & Helga Jaques 13414 -158th Ave. SE 19112 NE 146th Way 13114 -158th Ave. SE Renton WA 98059 Woodinville WA 98072-6361 Renton WA 98059 Leonard J. Johnston Diane Kazele Don Kezele 16016 SE 135th 15657 SE 137th Pl. 15657 SE 137th Pl. Renton WA 98059 Renton WA 98059 Renton WA 98059 ,. f LO l POOI 6/L03RE038-Evendell Revision 3 Duana Kolouskova Joann Lee Tim & Gina Lex Johns Monroe Mitsunga PLLC 13802 • 160th Ave. SE 13116-158thAve.SE 1500.114th Avenue SE, #102 Renton WA 98059 Renton WA 98059 Bellevue WA 98004 Rebecca Lind Steve Lyman Jerry Marcy City of Renton, EDNSP 14505 -160th Ave. SE P.O. Box575 1055 S. Grady Way Renton WA 98059 Seattle WA 98111 Renton WA 98055 Fred & Gloria Martin Linda Matlock Jim McDougal 13019 • 160th Ave. SE WA State Ecol. Dept./WQSW Unit 14502 167th Pl. SE Renton WA 98059 PO Box47696 Renton WA 98059 Olympia WA 98504-7696 Bill Mckin Eleanor Moon Steven & Peri Muhich 14404. 162nd Ave. SE KC Executive Horse Council 13420 • 160th Ave. SE Renton WA 98059 12230 NE 61st Renton WA 98059 Kirkland WA 98033 John Nanney Sally Nipert Gary Norris 16169 SE 146th Pl. 14004 -156th Ave. SE Gary Struthers & Associates Renton WA 98059 Renton WA 98059 3150 Richards Road #100 Bellevue WA 98005 Florence Nott Dave Nyblom Richard & Anita Oliphant 15915 SE 134th Pl. 13606 • 158th Avenue SE 16519 SE 145th St. Renton WA 98059-6832 Renton WA 98059 Renton WA 98059 David Petrie David Platt David Rockabrand 811 S. 273rd Ct. 510 Panoramic Dr. Four Creeks UAC Des Moines WA 98198 Camano Island WA 98282 11427 162nd Ave. SE Renton WA 98059 Marsha Rollinger Mike Romano Geneva Scholes 15646 SE 138th Pl. Centurion Development Services 12924 -158th Ave. SE Renton WA 98059 22617 8th Drive SE Renton WA 98059 Bothell WA 98021 Curtis Schuster Charles & Viola Scoby Seattle KC Health Dept. KBS Ill, LLC 13112 • 158th Ave. SE E. Dist. Environ. Health 12320 NE 8th St., Ste. 100 Renton WA 98059-8531 14350 SE Eastgate Way Bellevue WA 98005 Bellevue WA 98007 Karen & Jeffrey Sidebotham Daniel B. Slaton Howard ~tansbury 13004 • 158th Ave. SE 15315 SE 133rd Court US Land'Development Association Renton WA 98059 Renton WA 98059 22617. 8th Dr. SE Bothell WA 98021 Peggy Streit Penny Thorbeck David Watler 13512 -160th Ave. SE 15650 SE 138th Pl. 15635 SE 138th Pt. Renton WA 98059 Renton WA 98059 Renton WA 98059 Alex Weitz Mr. & Mrs. Bob Wilmot Kurt Wilson 15646 SE 138th Pl. 13900 -160th Ave. SE Harbour Homes Renton WA 98059 Renton WA 98059 1010 South 336th Street #305 Federal Way WA 98003 Alvin Walberg Harold & Eleanor Zeek Greg Borba 16021 SE 136th St. 16612 SE 145th St. DDES/LUSD Renton WA 98059 Renton WA 98059 MS OAK·DE-0100 • LO I POD I 6/L03RE038-Evendell Revision Laura Casey DDES/LUSD Wetland Review MS OAK-DE-0100 Anne Noris Clerk of Council MS KCC-CC-1025 Larry West DOES/LU SD Geo Review MS OAK-DE-0100 Kim Claussen DDES/LUSD Current Planning MS OAK-DE-0100 Carol Rogers LUSD/CPLN MS OAK-DE-0100 Bruce Whittaker DDES/LUSD Pre!. Review Engineer MS OAK-DE-0100 Kristen Langley DDES/LUSD Land Use Traffic MS OAK-DE-0100 Karen Scharer DDES/LUSD Current Planning MS OAK-DE-0100 4 NOTE: If the Renton School District announces a district-wide school closure due to adverse weather conditions or similar area emergency, the public hearing on this matter will he postponed. Parties of record will be notified of the time and date of the rescheduled hearing. Any questions regarding postponements and rescheduling can be directed to the Hearing Examiner's Office at (206) 296-4660. Sign language and communication material in alternate formats can be arranged given sufficient notice at SLS:gao LOIP0016-L03RE038 NOT Attachment 296-1000 (TDD number 296-1024). ~ DDDDO DODD D~O '• ' I RULES OF PROCEDURE OF THE KING COUNTY HEARING EXAMINER Rule VIJJ. PRE-HEARING CONFERENCES A. Purpose and Initiation Pre-hearing conferences promote efficient case management by providing an informal process for early identification of issues and resolution of procedural matters in comp Jex cases. Evidence generally will not be received at a pre-hearing conference, except when required in order for the examiner to rule on a motion. (Pre-marking and introduction of exhibits to which there is no objection may occur at the discretion of the examiner.) The examiner, on motion of any party or upon his/her own motion, may convene a pre-hearing conference to: 1. Identify, clarify, limit or simplify issues. 2. Hear and consider pre-hearing motions. 3. Schedule hearings, identify parties and witnesses, determine the order of and limits upon testimony, obtain stipulations as to facts and law, identify and admit exhibits, order discovery, and consider and act upon any other matter which may aid in the efficient disposition of the hearing. B. Requests for Conference A motion to convene a pre-hearing conference shall be made to the examiner as soon as the need for a conference is recognized by the moving party (at least 21 days prior to the scheduled hearing date), and shall state the reasons for the request, including any motions to be presented. For good cause stated in the motion, the examiner may consider a request that fails to meet the 21-day requirement. For hearings authorized under KCC 20.24.080, a motion by any party for a pre-hearing conference shall be granted if timely. However, unless consented to by all parties or otherwise ordered for good cause by the examiner, no pre-hearing conference on an appeal can be convened later than 45 days after receipt of the statement of appeal by the hearing examiner's office. C. Proceedings at Conference A party who has received timely notice of a pre-hearing conference shall identify at the conference any pre-hearing motions not previously made which he/she intends to make. Parties or interested persons may also file timely written pre-hearing motions for consideration at the pre- hearing conference. Failure to make or disclose a motion which was available to the party at the time of the conference may be grounds for its denial if subsequently made. D. Pre-hearing Order FoUowing a pre-hearing conference, the examiner sha11 issue an order specifying all items determined at the conference. The order shall be binding upon all parties and interested persons who received timely notice of the conference. Revised March 31 , 199 5 DIRECT,NS TO DDES HEARING Root 900 OAKESDALE AVE SW, RENTON SOUTHBOUND 1-5 • EXIT 157 -Marting Luther King Way • Tum RIGHT onto 68th Ave. S. 68'• Ave. S. becomes MONSTER RD. SW Monster Rd. turns into OAKESDALE AVE SW ODES is on your left (building 900) NORTIIDOUND 1-5 EXIT 154 to I-405/W A-518/Burien/Renton • Stay right to I-405/Renton/Bellevue • I-405 EXIT I to WA-181/W. Valley Hwy. • LEFT onto W. Valley Hwy/SR 181 • RIGHT onto East Grady Way LEFT onto Oakesdale Ave. SW DOES is on your right (building 900) NORTIIDOUND SR 167 • Northbound under the 1-405 overpass LEFT at SW 7•• St. (2nd light) LEFT onto Oakesdale Ave. SW ODES is on your left (building 900) SOUTIIDOUND 1-405 • EXIT 2 to WA-167/Aubum/Rainier Ave. Follow to SR-167 (Valley Fwy.) north LEFT onto SW Grady Way RIGHT onto Oakesdale Ave .. SW DOES is on your right (building 900) NORTHBOUND 1-405 • EXIT I to Interurban Ave. S/West Valley Hwy • LEFT at light at ramp bottom (north under 1-405) • RIGHT onto SW Grady Way • LEFT onto Oakesdale Ave. SW DOES is on your right (building 900) SW 7™ STREET SW GRADY WAY. N s -E G:\working\Misc\Hex\DDES directions.doc \ TO: RE: OFFICE OF THE HEARING EXAMINER KING COUNTY, WASHINGTON 400 Yesler Way, Room 404 Seattle, Washington 98104 Telephone (206) 296-4660 Facsimile (206) 296-1654 NOTICE OF APPEAL Parties and Interested Persons Clerk of the Council Department of Development and Environmental Services File No. L03RE038/L0I P0016A March 2, 2004 A written appeal statement has been submitted by Gwendolyn High on behalfofCitizens' Alliance for a Responsible Evendell, in the above-referenced matter. Copies may be obtained from this office. Any party of record (other than an appellant replying to his/her own appeal) may respond in writing by submitting an original response statement and four copies to the Clerk of the Council. Room Wl025, King County Courthouse, 516-3'd Avenue, Seattle, Washington 98104 by March 16, 2004. Written responses should not include references to facts that are outside the hearing record. (Please note: The Office of the Clerk closes at 4:30 p.m. Facsimile and email transmissions are not accepted by the Clerk as forms of delivery.) The Metropolitan King County Council will decide this appeal based on the record from the Examiner's hearing and the issues raised within the written appeal statements and the responses thereto. You will be notified of the date for the consideration of the appeal by the Council. However, presentation of oral argument is at the discretion of the Council and limited to parties to the appeal (those persons who have filed written appeal statements or responses within the allowed time period, plus the applicant who is a necessary party). Generally, only one person supporting and one person opposing each appeal is permitted to address the Council. ' ~~~>>a a~ Legislative Secretary .to---·.·o . . . , Department of Development and Environmental Services Land Use Services Division 900·0akesdale Avenue Southwest Renton, Washington 98955-1219 Applicant: Howard .Stansbury U,S .. Land DevelopmentAssociates .C/0· Cantu rionDevelopment Services .22(:lf78th Dr..SE Notice of Application, Recommendation & Public Hearing lTvoe 3) File #'s: L03RE038 Evendell Plat Major Revision DDES Contact Karen Scharer Telephone N.o. (206) 296-7114 . .. karen.scharer@metrokc.gov· Bothell, WA 98021 425°486-2563 Date Applications Filed: October 1, 2003 Date Appl.Determined Complete: October 27, 2003 Project Location:. Lying south of SE 136'" St. between 156th Ave. SE and 160'" Ave. SE. Project Description: Subdivide the site into70 lotsto'r detached single family residences with tracts for recreation and drainage. The appli9antpropbsesto use Density Credit Transfers to allow for 20ofthe 70 lots. Perrnits requested.in this application: .MajorPlat Revision Relevant environmental docu~ents are available at'the address. below: SEPATD-MDNS, SEPAAdoption, Environmental checklist, drainage study, wildlife study & traffic impactar;ialysis. D.evelopmentregulations to be used for project mitigation, knownat this time: KCC 19A, 20, \, ' : ' ' ,: ' 21A, including sensitive area regulations, road standards and t998 Surface .WaterDesign Manual. SEPA TD -MDNS Consistency with applicable County plans and regulations: This proposal will be reviewed for compliance with all. applicable Kihg County Codes, including those noted above . . Other.Permits not, included -in this application, known at this time: None at this time ,community>Plan: Newcastle Zoning: R.4 ·Drainage Subbasin: Orting Hills subbasin of Cedar River Section/Township/Range: 14-23-05 DepartrnentRecommendation to the Hearing E~aminer: Approve subject to conditions Date of-Public Hearing: January.22, 2004. at 9:30 a.m. Location of Public Hearing: · DDES Hearing Room, 900 Oakesdale Avenue Southwest Renton, WA 98055•1219 A public hearing before the King County Hearing Examiner is required for this application. The Department of Development and Environmental Services (ODES) will issue a report and recommendation to the Hearing Examiner two (2) weeks prior to the scheduled public hearing. Following the close of the public hearing, the Hearing Examiner will issue a written decision which may be appealed to the Metropolitan-King County Council. Any person wishing additional information on this proposed project should contact the planner at the address and/or telephone number listed above. Written comments may also be submitted to ODES. You may review the application and any environmental documents or studies in our Renton office. NOTE: If you require this material in braille, audio cassette, or large print, please call (206) 296-6600 (voice) or (206) 296-7217 (TIY). A public hearing as required by law will be held to consider the approval of this application. If the Renton School District announces a district-wide school closure due to adverse weather conditions or similar area emergency, the public hearing on this matter will be postponed. Interested parties will be notified of the time and date of the rescheduled hearing. Any questions regarding postponements and rescheduling can be directed to the Hearing Examiner's Office at (206) 296-4660. Department of Development and Environmental Services Land Use Services Division 900 Oakesdale Avenue Southwest Renton, Washington 98055-1219 ·· Mailing Date: November 10, 2003 --------------------------------------------------------------------------------------------------- Please send me notification of the public hearing and other official notices concerning this application.· No need to return a new slip if you are already listed as a party of record on the original Evende/1 plat/rezone L01P0016. Evendell Revision Exhibit No.-~~~~~~ Item No. L....~.1>..1:~~¥-=g. Address: _______________ ---'K'"in,.ac..,C"-"o""unty"-'L'-"Hea=ring!.!l:L!Examlne==·"'r ___ _ Telephone No.: ------------ ALTERNATIVE FORMATS AVAILABLE UPON REQUEST !" .. · ;::,: . , 11 · I I I . ilf:j 1.l 1. 1. . '1 1 i1il1 l 1li 1l . 1' I,,•, .j .llJ ·I! I l l',iili 11! ! 111~ 1·iil i .. .-• " , I • ~ -~I l!llfi J.' 1·' 1·· "' ' 1),!lf 111 11J 111 !'11' .,,.. •If 'h 'h I ' · lli 1il1 HI lr1 111 m'II! ·,!,ljh '1' 1'1· '1' •llfllflflf , 11ililf 111 ]I Tll l .. ' . f 11h nlh I I I .. o·. " . -.,. ...... 4CREEKS UAC ATIN: CLAUDIA DONNELLY PO BOX3501 RENTON, WA 98056 BORBA,GREG CURRENT PLANNING SUPERVISOR DOES/ LUSD MS: OAK -DE -0100 BRENDEN, MARSHALL 18225 SE 128TH RENTON, WA 98059 BRYANT, RONDA 15406 SE 136TH ST. RENTON, WA 98059 CARLSON, MARILYN 13616 156TH AVENUE SE RENTON, WA 98059 CASEY, LAURA WETLAND REVIEW DDES/LUSD MS: OAK -DE -0100 CITY OF RENTON A TIN: REBECCA LIND 1055 SOUTH GRADY WAY RENTON, WA 98055 CLAUSSEN,KIM SR. PLAT PLANNER DDES/CPLN MS: OAK -DE -0100 COFFIN, RONALD 16015 SE 135TH PLACE RENTON, WA 98059-6828 LOIP0016 LOIP0016 LOIP0016 LOIP00!6 LOIP00!6 LOIP00!6 LO!P0016 LOIP0016 LOIP0016 DAY, SHIRLEY 14412 167TH PLACE SE RENTON, WA 98059 DORST AD, ROGER EVERGREEN EAST REAL TY PO BOX 375 REDMOND, WA 98073 GRAVES, KATHY 13020 160TH A VE SE RENTON, WA 98059 HANSON, STEPHEN & YVONNE 15611 SE !38HI PLACE RENTON, WA 98059 HAOZOUS ENGINEERING INC ROBERT DARROW 15428 45TH CT MUKILTEO, WA 98275 HARBOUR HOMES KURT WILSON 1010 S. 336TH ST., SUITE #305 FEDERAL WAY, WA 98003 HEMNES, VALERIE 15627 SE 139TH PLACE RENTON, WA 98058 HIGH, VICTOR & GWENDOLYN 13405 158TH AVENUE SE RENTON, WA 98059 HILL, EDWARD, JUNE & KRISTY 13527 -156TH AVENUE SE RENTON, WA 98059 LOIP00!6 LOIP0016 LOIP0016 LOIP0016 LOIPOOl6 LOIP0016 LOIP0016 LOIPOOl6 LOIP0016 .. --. HILTON, EDWARD & NANCY 13414. 158TH AVENUE SE RENTON, WA 98059 HUGHES, KURT 19112 NE 146TH WAY WOODINVILLE, WA 98072-6361 JAQUES, FRED AND HELGA 13114 158TH AVENUE SE RENTON, WA 98059 JO,INSTON, LEONARD J. 16016 SE 135TH RENTON, WA 98059 KC EXECUTIVE HORSE COUNCIL ELEANOR MOON 12230NE61ST KIRKLAND, WA 98033 KC HEARING EXAMINER CHERYLE PACKARD LOIP0016/LOITY401 EVENDELL MS: BOC· CC· 0850 KEZELE,DON 15657 SE 137TH PLACE RENTON WA 98059 LANGLEY, KRISTEN LAND USE TRAFFIC DDES/CPLN MS: OAK -DE-OIOO LEE,JOANN 13802 160TH A VENUE SE RENTON, WA 98059 LOIPOOI6 LOIP0016 LOIP0016 LOIP0016 LOIPOOl6 LOIPOOl6 LOIPOOl6 LOIP0016 LOIPOOl6 LEX, TIM & GINA 13116158TH AVE SE RENTON, WA 98059 LYMAN, STEVE 14505 • I60Tll AVENUE SE RENTON, WA 98059 MARCY, JERRY POST OFFICE BOX 575 SEATTLE, WA 98111 MARTIN, FRED & GLORIA 13019 160THAVE SE RENTON, WA 98059 MOKIN,BILL 14404 162ND AVENUE SE RENTON, WA 98059 MUHICH, STEVEN & PERI 13420 160TH AVENUE SE RENTON, WA 98059 NIPERT, SALLY 14004 156TH AVE SE RENTON, WA 98059 NOTT, FLORENCE 15915 SE 134TH PLACE RENTON, WA 98059 NYBLOM, DAVE 13606 158TH AVE SE RENTON, WA 98059 LOIP0016 LOIP0016 LOIPOOI6 LOIP0016 LOIP0016 LOIP0016 LOIP0016 LOJPOOJ6 LOIP0016 •• . -~ OLIPHANT, RICHARD & ANITA 16519 SE 145TH ST. RENTON, WA 98059 PETRIE, DA VE 811 SOUTH 273RD COURT DES MOINES, WA 98198 PLATT, DAVID 510 PANORAMIC DRJVE CAMANO ISLAND, WA 98282 ROGERS, CAROL CURRENT PLANNING SECTION DDES/CPLN MS: OAK-DE-0100 ROLLINGER, MARSHA 15646 SE 138TH PLACE RENTON, WA 98059 ROMANO, MICHAEL CENTURIAN DEVEL. SERVICES 22617 8TH DRSE BOTHELL, WA 98021 SCHARER, KAREN PROJECT PLANNER MS: OAK -DE-0100 DDES/CPLN SCHOLES, GENEVA 12924 158TH AVE SE RENTON, WA 98059 SCHUSTER. CURTIS G JOHN L SCOTT REAL EST A TE 12505 BEL-RED RD, STE 212 BELLEVUE WA 98005 LOIPOOl6 LOIPOOl6 LOIPOOl6 LOIPOOl6 LOIPOOl6 LOIPOOl6 LOIPOOl6 LOIP0016 LOIP0016 SCOBY, CHARLES & VIOLA 13112158THAYESE RENTON, WA 98059-853 I SEA TILE KC HEAL TH DEPT. E. DIST. ENVIRN. HEALTH 14350 SE EASTGATE WAY BELLEVUE, WA 98007 SIDEBOTHAM, KAREN & JEFFREY I 3004 158TH A VE SE RENTON, WA 98059 SLATON, DANIEL B. 15315 SE 133RDCOURT RENTON, WA 98059 STANSBURY, HOWARD US LAND DEVL. ASSOC/CENTURION 22617 8TH DR SE BOTHELL, WA 98021 STREIT, PEGGY 13512 160TH AVENUE SE RENTON, WA 98059 THORBECK, PENNY 15650 SE 138TH PL · RENTON, WA 98059 WA ST.ECOLOGY DEPT/ WQSW UNIT ATTN: LINDA MATLOCK PO BOX 47696 OLYMPIA WA 98504-7696 WATLER, DAVID 15635 SE !38TII PL. RENTON, WA 98059 LOIP0016 LOIPOOl6 LOIPOOl6 LOIPOOl6 LOIP0016 LOIPOOl6 LOIPOOl6 LOIPOOl6 LOIP00\6 .. ~ WEST,LARRY GEO REVIEW DDES/SDSS MS: OAK. DE-0100 WHITTAKER, BRUCE PRELIMINARY REVIEW ENGINEER DOES/ ERS MS; OAK -DE-0100 WILMOT, MR. & MRS. 13900 160TH AVENUE SE RENTON, WA 98059 WOLBERG, ALVIN 16021 SE J36TJI STREET RENTON, WA 98059 ZEEK, HAROLD & ELEANOR 16621 SE 145TH ST. RENTON, WA 98059 LOJPOOl6 LOJPOOJ6 LOJPOOl6 LOJPOOJ6 LOJPOOl6 ..,,. . . -~.I".'~ 3664~00278/1:03RE038 BECKMAN FRANCIS J JR BECKMAN ROBIN J 13511 158TH AV SE RENTON WA 98059 14230590 I 9/L03RE038 CARLSON MARILYNN E 13616 156TH AV SE RENTON WA 98059 1423059047/L03RE038 COLONY HOMES INC 1215120THAVNE#201 BEI.:LEVUE WA 98005 74180000 I O/L03RE038 FLORESCU !ONUS+VASILICA 13806 156TH AV SE RENTON WA 98059 1423059012/L03RE038 HAGERMAN EDWARD G 13710156TH AVSE RENTON WA 98059 I 463400049/L03 RE03 8 HALLUM JOHN MARTIN+VALERIE 15415 SE 136TH ST RENTON WA 98056 I 423059059/L03RE038 HILL EDWARD J JR 13527156TH SE RENTON WA 98055 1423059042/L03RE038 KEZELE DON+DIANE 15657 SE 137TH PL RENTON WA 98056 1423059089/L03RE038 KNEBEL PAULJ 5310185TH AVE SUMNER WA 98390 1423059022/L03RE038 MAIR ROBERT 13606 156TH AV SE RENTON WA 98056 7,. aJ00040/L03RE038 BREI MON GENE 20530 SE 130TH ST ISSAQUAH WA 98027 PL33/L03RE038 CITY OF RENTON ECONOMIC DEVELOPMENT DIVISION I 055 SOUTH GRADY WAY RENTON WA 98055 1463400055/L03RE038 DONNELLY KEITH E+SHIRLEY C 13805156TH AVSE RENTON WA 98059 UAC-FC/L03RE038 FOUR CREEKS UNINCORPORATED AREA COUNCIL PO BOX 3501 RENTON WA 98056 74 I 8000050/L03RE038 HALLETT GARY+MAUREEN M 15634 SE 138TH PL RENTON WA 98059 146340005 l/L03RE038 HENRY ALEXANDER M TTEE 13727 156TH AV SE RENTON WA 98059 3664500 I 35/L03RE038 HILTON EDWARD W+NANCY J 13414 158TH AV SE RENTON WA 98059 1423059074/L03RE038 KEZELE DONALD J 15657 SE 137TH PL RENTON WA 98055 1423059053/L03RE038 KNEBEL PAUL J & MICHELLE 4916 HORSESHOE BEND COLORADO SPRINGS CO 80917 1463400046/L03RE038 MCADAMS CLAYTON A JR 15454 SE 137TH PL RENTON WA 98055 l ,-oJ59006/L03RE038 BRYANT FRANKLYN A & RONDA A 15406 SE 136TH RENTON WA 98059 PL50/L03RE038 CITY OF RENTON DEVELOPMENT SERVICES DIVISION 1055 SOUTH GRADY WAY RENTON WA 98055 l 423059033/L03RE038 EHLERT DONALD E+EILEEN F 15502 SE 136TH ST RENTON WA 98056 I 423059067/L03RE038 GOETLICHER MARK S+SUSAN E 15623 SE 137TH PL RENTON WA 98056 ! 463400045/L03RE038 HALLIN VALERIE L 15415 SE 136TH ST RENTON WA 98056 1463400050/L03RE038 HENRY WILLIAM J TRUSTEE HENRY FAMILY LIVING TRUST 13707 156TH AV SE RENTON WA 98059 1423059102/L03RE038 KEZELE DJ 15657 SE 137TH PL RENTON WA 98055 !42305905 !/L03RE038 KEZELE DONALD J 15657 SE 137TH PL RENTON WA 98056 I 423059054/L03RE038 KNEBEL PAUL JOHN+SANDRA GAi 5310 185TH AVE SUMNER WA 98390 !463400048/L03RE038 · MCADAMS MARY MARTIN 15454 SE 137TH PL RENTON WA 98056 ' ,, . - 74 l 8000030/L03RE038 MCASKILL DENNIS 15618 SE 138TH PL RENTON WA 98059 l 423059043/L03RE038 MILBRATH DON D 15624 SE 137TH PL RENTON WA 98055 3664500127/L03RE038 NOTT DALE H 13422158TH AVSE RENTON WA 98059 3664500270/L03RE038 OSGOODBY ALAN G 13527 158TH AV SE RENTON WA 98059 3664500279/L03RE038 OSGOODBY JR BRUCE S 13523 158TH AV SE RENTON WA 98059 3664500141/L03RE038 PLATZ GUYE ET AL 13535 160TH AV SE RENTON WA 98059 SD8/L03RE038 .STEVE CRAWFORD, NEW CONSTRUCTION ISSAQUAH SCHOOL DISTRICT #411 565 NW HOLLY ST ISSAQUAH WA 98027 I 463400047/L03RE038 WEBBSCOTTK 13615 156TH AV SE RENTON WA 98059 7, .• J00020/L03RE038 MIDDLETON LARRY D 15614 SE 138TH PL RENTON WA 98055 1423059112/L03RE038 MILBRATH DON D 15624 SE 137TH PL RENTON WA 98056 3664500 I 20/L03RE038 NOTT FLORENCE 15915 SE 134TH PL RENTON WA 98059 366450028 J/L03RE038 OSGOODBY BRUCE SHANNON 13456156TH SE RENTON WA 98055 3664500261 /L03RE038 PERRY LUCILLE M 13426 156 AV SE RENTON WA 98055 SDJ3/L03RE038 R. STRACKE, FACILITIES & PLANNING RENTON SCHOOL DISTRICT #403 1220 N 4TH ST RENTON WA 98055 7418000080/L03RE038 TH ORBECK DAVE I 5650 SE 138TH PL RENTON WA 98059 J , •• J59045/L03RE038 MILERA TH DON D 15624 SE 137TH PL RENTON WA 98059 3664500285/L03RE038 MILL CHARLES V+ CATHERINE M 13434 156TH AV SE RENTON WA 98059 J 423059009/L03RE038 NYBLOM DAVID A+DEBRA L ALB! 13606158TH AVSE RENTON WA 98059 3664500280/L03RE038 OSGOODBY ELEANOR & VICTOR OSGOODBY BRUCE 13436 156TH SE RENTON WA 98056 3664500260/L03RE038 PERRY LUCILLE M 13426 156TH AV SE RENTON WA 98056 7 4 J 8000070/L03 RE03 8 ROLLINGER MARSHA L+WEITZ ALEX P 15646 SE 138TH PL RENTON WA 98059 74 J 8000060/L03RE038 TRUSTY LARRY & CINDY 15640 SE 138TH PL RENTON WA 98056 "'·,., t -.. y,. (E Renton) FD25 (Spring Glen) FD40 Fire Protection Dist #25 Fire Protection Dist #40 P.O. Box 2925 I 0828 SE 176th St Renton WA 98056-0925 Renton WA 98055 MS: KSC-NR-0600 MS: KSC-TR-0431 KC27 Water & Land Res. Div Gary Kriedt King County Dept. of Natural Res. KC Metro Envirn. Planning Steve Foley UIS Ll20 Fairwood Library Highlands Library 17009 -140th Av SE 2902 NE 12th St Renton WA. 98058 Renton WA 98056 LI23 Documents Dept. Librarian LI24 Kent Regional Library King County Library System 212--2ndAvN 960 Newport Way NW Kent WA 98032-4482 Issaquah, WA 98027 LI36 ATIN: Edward White PL18 Renton Library Kent Engineering Dept 100 Mill Av S 220 -4th Av S Renton WA 98055 Kent WA 98032 PL19 City of Renton PL33 Kent Planning Dept Economic Development Dept. 220 -4th Av S 1055 S. Grady Way Kent WA 98032 Renton WA 98055 Clinton G. Marsh, Director Fae. & Const. Dept SD9 R. Stracke, Facilities & Ping SD13 Kent School District # 415 Renton School Dist # 403 12033 SE 256th St. Bldg B 1220 N 4th St Kent WA 98031-6643 Renton WA 98055 Administrator SES Environmental Review Section ST2 Kent Sewer Utility WA State Dept of Ecology 220 -4th Av S PO Box47703 Kent WA 98032 Olympia WA 98504-7703 Habitat Biologist, Rod Malcom TRI Russ Ladley, Fisheries Biologist TR2 Muckleshoot Indian Tribe Puyallup Tribe 39015 -172nd Av SE 6824 Pioneer Wy E Auburn WA 98002 Puyallup WA 98371 TR3 Fisheries Habitat/Environment TR5 Snoqualmie Tribe Suquamish Indian Tribe PO Box 280 PO Box498 Carnation WA 98014-0280 Suquamish WA 98392 "' .. ~. . .. ~.JI -~ Richard Young Tulalip Tribe 7615 Totem Beach Rd Marysville WA 98271 Public Works Dtr Kent Water Dist 220-4th Av S Kent WA 98032 Soos Creek Water/Sewer Dist PO Box 58039 Renton WA 98058-1039 Coal Creek Utility District 680 I 132nd Place SE Newcastle, WA 98059 WA State Dept. of Wildlife 16018 Mill Creek Blvd. Mill Creek, WA 98012 WA State Dept. of Ecology NW Regional Office 3190-160thAveSE Bellevue, WA 98008-5452 WA St DOT MS 240 15700 Dayton Ave No. PO Box 330310 Seattle, WA 98133-9710 WA St. Ecology Dept/WQSW Unit Linda Matlock PO Box47696 Olympia, WA 98504-7696 Eleanor Moon KC Executive Horse Council 12230 NE 61st Kirkland, WA 98033 TR4 WD23 WD41 WD57 WD12 Cedar River Water/Sewer Dist 18300 SE Lk Youngs Rd Renton WA 8058-9799 City of Renton, Public Works Dept. WD32 Development Services Div. 1055 South Grady Way Renton WA 98055 WD55 Water Dist #90 15606 SE !28th St Renton WA 98059-8522 WD58 Water Dist #111 27224 -144th Av SE Kent WA 98042-9058 WA State Dept. of Wildlife Habitat Mgmt. Division P.O. Box 43155 Olympia, WA 98504-3155 WA St.DOT MS 230 15700 Dayton Ave. No PO Box 330310 Seattle, WA 98133-9710 WA St.DOT MS 250 15700 Dayton Ave. No. PO Box 330310 Seattle, WA 98133-9710 Roger Dorstad PO Box 375 Redmond, WA 98073 Legal ad for pub!. on Tuesday 11/4 ., ·-_,, Rogers, Carol From: Legals [legals@seattletimes.com] Sent: Thursday, October 30, 2003 1 :55 PM To: Rogers, Carol Subject: RE: Legal ad for publ. on Tuesday 11/4 Thanks Carol -----Original Message----- From: Rogers, Carol [mailto:Carol.Rogers@METROKC.GOV] Sent: Thursday, October 30, 2003 1:54 PM To: Legals; 'legals.bellevue@kingcountyjournal.com' Subject: Legal ad for publ. on Tuesday 11/4 Please confirm receipt. Please publish the accompanying, legal notice in your newspaper on TUESDAY. November 4, 2003. which will meet our minimum legal notice requirement. Should this not be possible, please call or fax me immediately. Submit your invoice and 3 copies of the affidavit of publication to Accounts Payable, as soon after publication as possible, in order for us to enter legal proof of publication in our file records, and so that we may process same for payment. Attachment: Legal Notice KING COUNTY DEPT. OF DEVELOPMENT & ENVIRONMENTAL SERVICES (ODES) 900 Oakesdale Ave SW. Renton. WA 98055-1219 NOTICE OF LAND USE PERMIT APPLICATION. RECOMMENDATION AND PUBLIC HEARING REQUEST: FORMAL SUBDIVISION REVISION File: File Name: Applicant: Location: L03RE038 Evendell Plat Major Revision Howard Stansbury, US Land Development Assoc. Located south of SE 136th St, between 156th Ave SE and 1601h Ave SE. Proposal: Subdivide into 70 lots for single-family detached residences using Density Credit Transfers to allow for 20 of the 70 lots. Date & Time of Public Hearing: January 22, 2004, 9:30am Location of Public Hearing: DDES Hearing Room 900 Oakesdale Ave SW Renton WA 98055 Project Planner: Karen Scharer, (206) 296-7114 Dept. Recommendation to Hearing Examiner: Approve subject to conditions. Comment Procedures: Comments on the above file are now being accepted by King County DDES, Land Use Services Division, at 10/30/2003 Page 1 of2 B~~fil!ltlro[µ!fift~UtuiE¢ij§Al'iJtxl .. ~~@J'ii!~llJl)-~~W~~.:~' ,. , .•. ,..,, .. ~ ·•. ';:"=:~ -:]Jr: .. .:,~. :=".":·"'.'-~r-1r· Ji/ r . . . •; .:.. ... · ..:. .... ._, •· . . ' ; ,:.:. . ' .. ci • ' _., !'' .. :'.: · , .. •.,J~--·. ~ ·, -~I;" •'f=· ,!!j 11 u1~1=,.= = ,e;_!§ .,_, ~--'-. .. -1 <--.:•.--_--_--r -,. a-~',r· ---. r '.-; _J_,c::;::i .• }--·c' --~~ __ .,, ·~!~~--'¥=?-_.o::;.'!=s:-~ _::,_ry ~/; ,_ :r :.--. l'fr :~c~l1fj I] Ble ,;:_~dit ~'{iewt !n_seyt;;.Fg~nia~.:..1.091~ ?ac1ions}t!elp •c), ' .~~)---~~~~-~ -,, : 0 -~~~ --:· _,,,._ -5-~ :;:-;i 11 ~;<I B_epJ?l~ ~eply l:/,'*~uJll'4!!Forl'.l'.~rd~~J!1''~~~~JI i ,J[fej~'* ,J·1r +-~; .:~tl~J-~~ ~-f l~::.·_-__ ,,J'·;lr.:_ .. .,,.:_..._-~-:. _,,_ ,,. ... ""'""'---~ -~"-~-··-~ r~ ~1-~---..:... ,,_,.-c,_·_-s -· __ __,. __ ili--.b·.~ .·a If;{~! ~-~rr!}i~f~icif~rflijl~~J~lt~eJb~d?!.E};~t tJi~,. ~l .f •• - To· ~ -· Rogers Garol · ·• • -. --· • ' ·' · -·-ffi • <;t ·tl} ~:/:t j' tf ·1J~i i:'1 }t ·_ t ,· , :~ -~ ~- fSu~f~Legalad/6r pl!bl;'omTuesday 11/4. ,· -. • · (}t i"tr i:f :~ -~= i~ ;~:·_tiJ iSent[ft,u,t0/30/2Q03}:DiliPl\1H':·:I1' 'i f! ~'ts , , ) FiJtil i~;· Hi, Carol! I have received your email, with the attachment, and will publish the notice (Re/L03RE038) in the 111D4/03 edition of the King County Journal. Thanks a bunch, Carol.. have a wonderful day! Tom Meagher Legal Advertising Representative King County Journal Newspapers Phone: 425-453-4296 or 253-872-6725 Fax: 425-635-0602 -----Original Mess age----- F rom: Rogers, Carol [mailto:Carol.Rogers@METROKC.GOV) Sent: Thurs day, 0 cto b er 30, 2003 I :54 PM To: 'le gals@s e att!etime s. com'; 'le gals .b ellevue@kingc ountyjournal. com' Subject: Legal ad for pub!. on Tuesday 11/4 ~'\\: ~;r,;; II ~""' Pv'!%:" ~ ~, Y,~~\% #v:'§ ~~(!;,,,, ~ fief,~ ~ ~;:?¥£ ~'i ~% ~i ~~ ~~i,<$ t.f;$ • "'04-f; 1%1 k(i~ 1"«::W, El o,.,.~,...,.. ,.,...,,,1: ........ ...,.,..,.:,.. _ · li!tefsti'~tl\W ~-~. ~;JD1ll~finbox~ Mic;~6ft ,,-llr~PPERMITS'-Plu; :-!llwl' g;;;;;,.~iw~;cJ>j -~:J;1~IUf~~1,~~~~~ '.1[~1~i<t~i~®~~1~f>_t.1~J . . ' _,..______, '" -------.. ----.. ' -· . ---' ,----'"'"" " --~----------·--·-- Thursday, Oct 30, 2003 02: 10 PM King County -DOES .. its li:: ~ "fl r fi'i (') 0 ~ STA TE OF WASHINGTON, COUNTY OF KING } AFFIDAVIT OF PUBLICATION PUBLIC NOTICE Lily Nguyen, being first duly sworn on oath that she is a Legal Advertising Representative of the King County Journal a daily newspaper, which newspaper is a legal newspaper of general circulation and is now and has been for more than six months prior to the date of publication hereinafter referred to, published in the English language continuously as a daily newspaper in King County, Washington. The King County Journal has been approved as a Legal Newspaper by order of the Superior Court of the State of Washington for King County. The notice in the exact form annexed was published in regular issues of the King County Journal (and not in supplement form) which was regularly distributed to its subscribers during the below stated period. The annexed notice, a Notice of Land Use Permit Application Recommendation and Public Hearing was published on Tuesday, 11/4/03 The full amount of the fee charged for said foregoing publication is the sum of $151.00 at the rate of $29.00 per inch for the first publication and NIA per inch y,r "";Ch subsequent insertion. Lily Nguyen Legal Advertising Representative, King County Journal S~bsc 'bed a sworn to me this 4th day of November, 2003. ,,,,,11\\lllll//11,111 . ;j-'' ~l:;~.'?:~t,9 ~'% ~ "t' .• •""o<' E1Cp;, "•.. ~ .;::; ..• ,, ......... :.;:::.. :::;;~.,~ '{ .. .,... Tom A. Meagher , i Of [ 1,'\~I\ \'5 % Notary Public for the State of Washington, Residing in Redm~d,~l)!!g,;;' ,$> it-§ Ad Number: 844566 P.O. Number: ~ \ pl)~'-~~/fl§ Cost of publishing this notice includes an affidavit surcharge. ~ d\r··... "•" '2.·~··<:,~ ~ ;.;.. .. ... :-,.;; '"" -i r ........ ,,ri ?-,$' 11111 EI Of ,,,,~ 1111 l/111111\ I 11\\ .,., .,KJNG'.COllN'l¥ioli:PT,OF;iO:" ~,~m,~~,,i rf~iia';"&M,8~1~1 APPLICATION; RECQMMENJ!ATIQN ! 'ANppmmtC:IJE6RING.-,; .... : -.,_ :Vi BEOUE$T:l:,;sttFOBJ'9il <;···SW:'> j mvis(QN,~iC :,:·:,·,;':;":~ · ~:'if.!~:i.~ikf 'J\)''·*'~ ~-:-~:~:fs·.,_<'-.:-.~-~\#s·:·~-,./ · p.p)j_,d.D ".~1· ... ''" ... J·\ll!'l·Jiw· ... ~. w·· .. ·.·.· : -~an '. eve: opm~t:~soc.\~'};, ..... Location:Located south of.SF,~13 ·-+~-. ; ,°~.Sti1betw~i156th-.Avei;SE1Qlld'if1r-f: :· rnOtb·AVe1sE1·· 1.;1i1.-/'l.<~:fi;r.?--;.; Pro.;;,;;,:,,, · ''Su\idivide intii'70lots'"'' . '. r.:¥ ... ·!' .;.'.·.·1';.,.-~ .... am;. i'.'l--Gl.' '.;j;·' '·::. ... '~.::.,·1. ••.· ffi' .. P"-~1\11~: , 1or-. smg1:';'11 y.,.-w::1.ocu..u. _,,TeSI. ! -:d~{e~\~Jlliiriih'-'i_:,,;n~~iyj :Qf~_~t I · Tnmsfers.to allow. fors20 of tl,o:70. b.t~f~:~::~:g~; I.ocation of-Public'He~.;;J;_.,).,: .. ,1 _,F:. ',.::.DDES·Heari.ng Rooin""ift\'.-:-::1-!\'./\ ~_.-:900_-0'alresd81e-Ave·sw?·-,.1.-"'f;_ .;i.::i~ ~- ;_ : ~~ WJi.: 980~~ \l!~Yni,1j11.l_t Pi'oJect ·Pll!l!Iler: ,1· ,.Karen Seh""'",' ; '(200) 296-711';i :., .. :-?f:'-~~-_,_·.:• .... L,,~i}!:,; .. ~r,.' ~~~,~~!~~t~~~~ ''0QmmenCProcecfures:2:.·tt·~1.COmments l..>:;\Oll'~ .. ' -'' Jfii'"j~~t'nciw',btitil''' . ., .. ·''''" • "' 'fGli~lieo" . . ol>Elf :i~~;:: "~!~::~r ,-~~~~~&~f~~~, . . , ® King County Department of Development and Environmental Services Land Use Services Division 900 Oakesdale Ave SW Renton, WA 98055-1219 L03RE038 -Evendell Plat Revision DOES Project Number m~!i~!!:® t{.C. o.o.e..s. I, /Vf 1C04E.L ,T. gc,..--.,c:> , hereby affirm that I have posted the following: (print name) X Notice of Permit Application D Other -------------- on the 3 L.I. day of Novi;11~ , 2003, in accordance with the Department of Development and Environmental Services' requirements. I further affirm that the notice will remain in place and visible during the full required notice period. Notice was provided at the following location(s): 1) /1,tJ i'-At,l.e:-5'£ ,4'•/-.t-,0,'~,~/-1 F <;vbJYJ f?"'F"'f; 2) A-T <;;..,vnf f<-IW,,,,,._,"'s /$f t-,,;rve 5J. ( A.f ft:: ;JC.~ 9r) 3) I hereby affirm that the above is a true and correct statement. ~r~ Signature This affidavit must be completed and returned to the Land Use Services Division within 7 days of posting. Improper posting or failure to return the affidavit within 7 days shall be cause for the final decision regarding your permit to be postponed. CPSFORMS/AFFIDAVIT OF POSTING.DOC 7/27/99 @ King County Department of Development and Environmental Services OAK-DE-0100 900 Oakesdale Avenue Southwest Renton, WA 98055 King County Department of Development and Environmental Services r .. , ...-c;--.,"" • i ri:,. . -'".;.-' "" \."-~Q :v Pi-1. ~ = 05 1-t!JV 20')3 ~ 900 Oakesdale Avenue Southwest Renton. Washington· 98055-1219 (CJFILW/(C)TI ~---e··, I -I ~~\ ------== 4ID-i·S 5--· \ ---------""" . "" = = ._.., ::'·. z ·-==' t~ ('"J ..-: " ' ! .. 0 °' r:; C, ··-tit ,.,., -0 .. ~ 3 tr, r, '-:? C 0 0 ·::fi::G:SC-+izi ·3 I/, I,, I,, 1, I I,,,, I,/,, I, I,, 1111,, I, I 11,lll, I,, I, I, ,I, f,,,, 1,/1 Deparf!!lent of Development and Environmental Services Land Use Services Division 900 Oakesdale Avenue Southwest Renton. Washington 98055-1219 ) Rational · The Director or his designee may waive the requirement for a pre-application conference if it is determined to be unnecessary for review of an application. PLEASE PRINT ALL INFORMATION BELOW. Date: __ <,~/_z.._{-t/-o_o __ King ~7nty Activity Number:_-~,os__::D~O--'f<-.c:.O....:.I....:.~-~ Permit type: ---~-l_Z_on<..._--'----.=ctl~trr_V_. _lo_.1_t _________ _ Project Name: __ N~~'l-b~lo~~)'Y}~----------------- Site Address: ------------------------- Par c e I number(s): .. 14 Z.30'5' -rjOD q Applicant's Name: ty'.), ,J.vv<..\ t2~~ ~ U > l.?.v, t( ])c..v~lry,:)t""""'IT Applicant'srationalforwaiver j\,.\L l-U-.fe..t.... ".:'1 l:J, );h.. ,s/i;J.} Mah,./ c,,----t, /t_ct/iro ~ ) c~ °"' ..... , .. ., ~ .::r t}, ?1111 Based on the rational noted above, I agree to waive the reqtl'l'lleg( pre- application conference, which has been determined to be unnecessary for tilip~ for an application. ' Ll)I Pot) I~ lJ) , .ll-. ?;~, 'J~. ~ and Use Services Division Manager lfJ ~ ~ ~ F96/ sPRS/ Ro.tional. W1w 4/15/97-8:~2 AM/dj ~: file canary: Mark Cary MAIN FILE COPY ~: Applicant (-- . I I • • --· .. <® King County Department of Development and Environmental Services Land Use Services Division 900 Oakesdale Ave SW Renton, WA 98055-1219 Date: June 13, 2000 Michael Romano Centurion Development Services 22617 8'h Dr. SE Bothell, WA 98021 Applicant Meeting Date: Time: Wednesday, June 28, 2000 11:00 a.m. .. · .. • ·, Er~"AppliCation Meeting . ,· ;86nfirinatioriNcitice . , Location: Department of Development and Environmental Services 900 Oakesdale Avenue Southwest Renton, Washington 98055-1219 Room: C-1 Conference Room (Please meet on the first floor) Tracking Number: AOOP0164 Rezone & subdivision Planner: Karen Scharer Phone No.: 206-296-7114 Please advise us if any changes are needed in the meeting date or time, so that we may reschedule the meeting as soon as possible. Please reference the project tracking number (see above) to any correspondence~i!, may wish to submit to us. · · t'\ti:'n•1t:'') IR ff!: r-11: n ;r: If you have any questions regarding this notice, please call the planner identifiep,,a\-io,ve: · '1 , .... ,., . 0, Please wait on the first floor for the planner to meet you. OCT O 1. 7nnJ i.ANO U~L CE-0. . ..... . · " "VICES FUlEcopy --F-W: Concurrenc, for Proposed-ell Plat and Rezone I LOI POOl01 .. Page I of: From: Scharer. Karen [Karen.Scharer@METROKC GOV] Sent: Tuesday. September 09. 2003 8 26 AM To: 'michael.romano@verizon.net' Cc: Shively. John: Warren. Richard: Langley. Kristen Subjsct: FW: Concurrency for Proposed Evendell Plat and Rezone (L01P0016) Per your request. this ,s the information received from DOT Knowing that a revision will likely be controversial with the community. DOT would be notified of future hearing dates so that they can attend & defend their position (as needed) at the hearing. Call if you have questions. Karen J. Scharer, Program/Project Manager II Current Planning Section Land Use Services Division. ODES 900 Oakesdale Avenue Southwest Renton. WA 98055-1219 206-2%-71 H Fax 206-2%-7051 <J, l <v2003 ·----Original Message----- fra:;;I: Shively, John Se:;t: Wednesday, September 03, 2003 12:17 PM To: Scharer. Karen CC: Warren, Richard; Wright, Kevin; McMahon, Dennis; campeau, Rebecca Set;ect: Concurrency for Proposed Evendetl Ptat and Rezone (L01P0016) Karen. f~ @©~D~rn,@ \J u oc·r -1 2003 K.C. o.o.E.S. I am responding on behalf of Richard Warren to your question on concurrency for the proposed Evendell Plat and Rezone (L01 P0016). The answer to your question is that the current certificate of concurrency is still valid for a plat revision up to the number of lots identified on the certificate .. We have consulted with the Prosecutors Office in making this determination. The key here is that the developer is seeking a revision of the same proposal for which they were originally given a certificate of concurrency. and therefore the revision is considered under the same application period. Since a concurrency certificate is valid throughout an application period. the current certificate of concurrency remains valid. up to the number of lots identified in the certificate. during any plat revision review process. I apologize for the delay in responding due to various key people being on vacation the past several weeks If you need further assistance. please contact me. or Rebecca Campeau at 263-4722. Thank you John Shively Transportation Planner Ill 22617-8'" Dr. SE Bothell WA 98021 Karen Scharer. Planner King County DOES Land Use Services 900 Oakesdale Ave. SW. Renton. WA 98055 ~ CENTURION DEVELOPMENT SERVICES October 1 . 2003 RE: Evendell Plat Revision L 0/PoPlb Dear Karen: (425) 486-2563 OFF (425) 486-3273 FAX On behalf of our client, U.S Land Development Associates, we are requesting KCDDES review and approval of our proposal to revise the approved 46 lot preliminary plat of Evendell to 70 lots through the use of Transferable Density Credits. Attached please find 35 copies of the revised preliminary plat map indicating the proposed 70 lot layout. Please note that this layout exactly matches the 70 lot alternative R-6 plat map that was originally proposed and reviewed concurrently with the 46 lot R-4 plat (current zoning). Also attached please find an updated Certificate of Availability from King County Water District #90 as well as a letter from the City of Renton stating that the existing Certificate of Sewer Availability for the original proposal is still valid. Please note that per King County Transportation Concurrency staff the existing Certificate of Transportation Concurrency is valid since this request is for a revision of the same proposal for which we were originally provided a Certificate. Accordingly, the revision falls under the same application period. Attached please find a copy of e-mail correspondence from Transportation Concurrency staff regarding this issue. We request that no additional SEPA review be conducted since the revised layout, including wetland impacts, buffers and mitigation as well as proposed drainage and traffic infrastructure, is identical to the previously reviewed 70 lot R-6 proposal. Please call me at (425) 486-2563 if you have any questions. We look forward to working with the ODES Development Review Team on this new residential project. Thank you. ~nll.C ro. PY r. ! """' V ~;~~~!:@ Enclosures K.C. u.D.E.S. Sincerely. CENTURION DEVELOPMENT SERVICES ~J.!2--- Michael J Romano Project Consultant ·· Le, us rnke the load. ·· ' y King County .. Department of Development and Environm ·ces Land~Use Services Division • 900 Oakesdale Avenue SW Renion: WA 98055-1219 (206) 296-6600 PLAT DENSITY4!t' DIMENSION CALCULATIONS PRELIMINARY SUBDIV1SION WbRRSREE I RELATING TO DENS/ f Y AND DIMENSIONS A great many ordinances play a role in the creation of a 'sutx:livision within King County. Determining the allowable density. maaimum density. minimum density. and lot width on a piece oi property can be confusing. This worksheet will assist you in correctly applying specific portions of the code and will be used to determine if a proposed plat or sh6rt plat meets the density and dimensions provisions of the King County Zoning Code (Title 21A). This worksheet is prepared to assist applicants. and does not replace compliance. with adoPted local state and federal laws. Preapplication conferences are reoommended. These conferences help to clarify issues and answer questions. They may save you both time and money by eliminating delays resutting from requests for additional information and revisions. You may call (206) 296-6640 to find out how to arrange tor a preapplication conference. DATE: 24-SeP:03 NAME OF PLAT: EYENDEI I COMPREHENSIVE PLAN LAND USE DESIGNATION· ZONING: M (WITH DENSITY CREDITS) COMMUNITY OR SUBAREA PLAN: FILE NO.: L01P0016 lJrban residentiali4:12 Units per Acre Newcastle If more than one Comprehensive Plan Land Use designation or zone classification exists for the property. show the bow:idary between the land uses or zones and the area within each on the preliminary plat map. If a single lot is divided by a zone boundary. transferring density across zones on th~t lot may be permitted subject to the provisions of KCC 21A.12.200. Please C:Omolete only the applicable portions of the form L Site Area {KC C 21A 06 1172)· Site area {in square feet) is the gross horizontal area of th~ project site. less submerged lands as defined by K.C.C. 2 IA.06.1265. and lfms_areas which are required to be dedicated on the perimeter of a project site for public rihgts-of-way. ___ _c:O ___ square feet in submerged land (any land below the ordinary high water mark -see K.C C. 21A.06.825.) + __ _,,_24::c·e,8:.::0C!.7 __ square feet in perimeter rights-of-way which will be required to be dedicated (area 30 feet trOm center line of "road) Calrulation: 24.807 Total -----~5~6~6~.2~3~9 Gross horizontal area of the project site _____ .:2c,4c,.B:.::0::..7 Total submerged lands and rights-of-way _____ _,54=1ce.43=2 Site area in square feet NOTE: To continue calculations. convert site area in square feet to acres by dividing by 43.560 ------~'=2~.4~3 Srte area in acres IL Base Density (K.C.C. 21A.12.030 .. 040 tables):· The base density is determined by the zone designation(s) for the lot ___ _:4:_ ___ du/acre L03 RE:::.0 38 'OCT O 1 2003 24-Sep.03 Page 1 of4 Fil£ Cop')f ANt'1\fi~~{Tcrs ;,.. . PLAT DENSITY AND DIMENSION CALctilltNS Ill. Allowable Dwelling Units and Brnmdin2 {K C C 21 A 12 070) · The base number of dwelling units is calculated by multiplying the site area by the base density in dwelling units per aae (from K.C.C. 21A.12.030 -.040 tables}. ----'1=2~.4~3~site area in acres (see Section 1.)·X __ _;4:..._ __ base density (see Section IJ.} = 49.72 allowable dwelling units Round up to 50 D.U When calculations result in a traction. the traction is rounded to the nearest whole number as tallows: 1. Fractions of .50 or above shall be rounded up: and 2. Fractions below .50 shalt be rounded down. IV. Required On-site Recreation Space (K C C 21 A J 4 180) · This section must be q:,mpleted only if the proposal is a residential develoPment of more than four dwelling units in the UR and A zones. stand-alone townhouses in the NB zone on property designated Commercial Outside of Center ii more than four units. or any mixed use development if more than four units. Recreation space must be computed by multiplying the recreation space requirement per unit type by the proposed .number of sud, dwelling units (K.C.C. 21A.i4. 180). NOTE: King County has the discretion to ael:ept a fee in lieu of.all or a portion of the required recreation space per K.C.C. 21A.14.185. Apartments and townhouses developed at a density gieater than eight units per acre. and mixed use must provide recreational space as follows: 90 square feet X~--~-----proposed number of studio and one bedroom units --------------'00 130 square feet X proposed number of two bedroom units O 170 square feet X pro!X)Sed number of three or more bedroom units o _________ Recreation Space Requirement O Residential sutxjMsions and townhouses developed at a density of eight units or less per acre must provide recreational space as follows: 390 square feet X -------~7~00 proposed number of units 27300 Mobile hcime parks shall provide recreational space as follows: 260 square feet X _________ proposed number of units V. Net Buildable Area fK C C 21 A 06 797) · This section is used for oomputing minimum density and must be oompleted only if the site is located in the R-4 through R.-48 zones and designated Urban by the King County Comprehensive Plan. The net buildable area is the site area (see Section I.) less the following areas: + + + + + CalOJlation: 24-Sep,-03 Page 2 of 4 0 --"'----areas wi:tb.i.n.a project site whidl are required to be dedicated for"public rights-of-way in e,ccess of sixty feet (60') of width 76.130 ~==---sensitive areas and their buffers. to the extent they are required by King County to remain undeveloped 40.256 .:,,c,:::,: ___ areas required for above ground stormwater control facilities including. but not limited to. retention/detention ponds. biofittration swales and setbacks from such ponds and "Swales ~==---areas required by King County to be dedicated or reserved as on°site recreation areas. Deduct 13.650 area within stormwater control facility it requesting recreation space credit as allowed by KCC 21A.14.180. (see Section IV.) 0 _.::..._ ___ regional utility romdors. and 0 130.036 -~---other areas. excluding setbacks. required by King County to remain undeveloped =='--Total reductions -----~54~1~.43=2 site area in square feet (see Section I.) 130.036 Total reductio_ns 411.396 net buildable area in square feet NOTE: oonvert site area in square feet to acres by dividing by 43.560 9.44 net buildable area in acres 0 PLAT DENSITY AND DIMENSION CALC~S VI. Minimum Urban Aesideotial Density (KC C 21A 12 060) The minimum density requirement applies Qru)! to the R-4 through R-48 zones. Minimum density.is determined by multiplying the base density in dwelling units per acre (see Section IL) by the net buildable area of the site in acres {see Section V.) and then multiplying the resulting product by the minimum density percentage from the K. C. C. 21 A. 12.030 table. The minimum density requirements may be phased or waived by King County in certain cases. See K.C.C 21 A. 12.060. Calculation· ___ _:4:,_base density in du/ac (see Section II.) X 9.44 net buildable area in acres (see Section V.) VII. _____ -.,3cc7.c.7c,Be_ X minimum density% set forth in K.C.C. 21A.12.030 or as adjusted in Section VIL _____ _,3e,2c.·!.llcminimum dwelling units required Minim11m Density Adjustments for Modecate Slopes (KC C 21A 12 087) Residential developments in the A-4. R-6 and A-8 zones may modify the minimum density factor in K.C.C. 21A.12.030 based on the weighted average slope of the net buildable area of the site (see Section V.). To determine the weighted average slope. a topographic ·survey is required to calculate the net buildable area(s) within each of the following slope increments and then multiP¥ng the number of square feet in each slope increment by the median slope value of each slope increment as follows: -------~Oe_SQ. ti O -5% slope increment X 2.5% median slope value + O sq. ti 5 -10% slope increment X 7.5% median slope value + 0 sq. ff 10 -15% slope increment X 12.5% median slope value + 0 SQ. ft 15-20% slope increment X 17.5% median slope value + 0 SQ. ti 20 -25% slope increment X 22.5.;/,, median slope value + 0 SQ. ft 25 -30% slope increment X 27 .5% median slope value + O sq. ft 30 -35% slope increment X 32.5% median slope value + 0 sq. ft 35 -40% slope increment X 37.5% median slope value ______ ___::_D Total square feet in net buildable area ______ __::_O Total square feet adjusted for slope Calculation: ____ O;;_total square feet adjusted for slope divided by ______ .;:.O total square feet in net buildable area ________ weighted average slope of net buildable area --------% (Note: muttiply by I 00 to convert to percent -round up to neaiest whole percent) Use the table below to determine the minimum density factor. This density is substituted for the minimum density factor in K.C.C. 21A.12.030 table when calculating the minimum density as shown in Section VI. of this worksheet. weighted Average ~ lope of Net Minimum Density Factor: Buildable Areals\ of Site: 0% -less than 5% 85.00% 5% -less than t 5% 83%. less 1.5% for each 1 % of aver·~e slo~ in excess of 5% 15% -less than 40% . 66%. 1ess 2.0% for each 1 % of aver:.ne sl-in excess of 15% EXAMPLE CALCULATION FOR MINIMUM DENSITY ADJUSTMENTS FOR MODERATE SLOPES: sq.ft 0 -5% slope increment X 2.5% median slope value + sq. ft 5. 10% slope increment X 7.5% median slope value + sq. ft 10 -15% slope increment X 12.5% median slope value + SQ. ft 15 -20% slope increment X 17 .5% median slope value + sq. ft 20 -25% slope increment X 22.5% median sk>pe value + sq. ft 25 -30% slope increment X 27.5% median slope value + sq. ft 30 -35% slope increment X 32.5% median slope value + sq. ft 35 -40% slope increment X 37.5% median slope value 0 Total square feet 0 Total square feet in net buildabm area adjusted for slope CalOJlation: -----total square feet adjusted for slope divided by total square feet in net buildable area = \"leighted average slope of net buildable area = % (Note: muttiply by I 00 to convert to percent -round up to nearest whole percent) Using the table above. an 11 % weighted a...-erage slope of net buildable area falls within the 5% -less than· 15% range which has a minimum density factor of 83%. less 1.5% for ead, 1% of average slope in excess of 5%. Since 11 % is 6% above 5%. multiply 6 times 1.5 which would equal 9%. Subtract 9% from 83% for an adjusted minimum density factor of 74%. This replaces the minimum density factor in K.C.C. 21A.12.030 table. 24-Sep.03 Page 3 of 4 0 0 0 0 0 0 0 0 . ... / • PLAT DENSITY AND DIMENSION CALC~S VIII. Maxim11m P;weUing Units Alkzwed {KC C 21A 12 030-040)· This section should be oompleted only if the proJX)Sal indudes application ot residential density incentives (K.C.C. 21A.34) or transfer of density credit (K.C.C. 21A.36 or 21A.55). MaximUm density is cala.Jlated by adding the bonus or transfer units authorized to the base units cala.1lated in Section !II. of this worksheet. The maximum density permitted through residential density incentives is 150 percent of the base densi1y (see Section 11.) of the undertying zoning of the development or 200 percent of the base density tor proposals with 100 percent affordable units. The maximum density permitted through transfer ot·densrty credit is 150 percent of the base density (see Sedion II.) of the underlying zoning of the development ----~Oc-base density in dwelling unrts per acre (see Section IL) X 150°/,, O maximum density _____ O_maxirnum density in dwelling units per acre X 12.42956841 site area in acres= ------------~00 maximum d\Nelling units allowed utilizing density incentives {K.C.C. 21A.34) _____ Oc-base density in dwelling units per acre {see Section 11.) X 200% 0 maximum density _____ O_maximum density in c:t,,yel/ing units per acre X 12.43 site area in acres = _____________ 0 0 maximum dwelling units allowed utilizing density incentives with 100% affordable units {K.C.C 21A.34) _____ 4_base density in dwelling units per acre (see Section II.) X 150% ~--~----6 maximum density _____ 6 maximum density in cf,,yelling units per aae X 12.42956841 site area in acres = ________ 7_4_.5_77_4_1_04_7_ maximum dwelling units allowed utilizing density transfers {K.C. C. 21 A.36 or 21 A.55) Calculation: ______ 5_0_.0_0_base allowable dwelling units calculated in Section 111 + O bonus units authorized by K.C.C. 21A.34 + 20 transfer units authorized by K.C.C. 21 A.36 or 21 A.55 ______ 7_0_.0_0_total dwelling units (cannot exceed maximums calculated above) IK Minimum Lot Area For Construction: X. 24-Sep-03 Page 4 of 4 Except as provided tor nonronformances in KCC 21 A.32: A. B. Lpt Width· In the UR and R zones no consfn!ction shall be permitted on a lot that contains an area of less than 2.500 square feet or that does not comply with the applicable minimum lot width. except for townhouse developments or zero-lot-line sulxtivisions: and In the A. F. or RA zones: Construction shall not be permitted on a lot containing less than 5. 000 square feet and 2. Construction shall be limited to one dwelling unit and residential accessory uses for lots rontaining greater than 5.000 square feet. but_less than 12.500 square feet. {KCC 21A.12.100) Lot widths shall be measured by scaling a drde of the applicabte diameter within the boundaries of the lot as shown below. provided that an access easement shall not be induded within the cirde. (See KCC 21A.12.050). • .. .. {/ Rohen H Darrow. P.E. EdwurdJ .\JcCorthy. Ph.D .. P.E 13-J:!8 • .J5th Cmm .\f11k1lteu. H:..J 98_1i5 /-1816 SE I I 6th S1ree1 Remon. W4 9R05Y f(n-(.J].5) 25-1-0511) .(.J25) 235-27(17 December 5, 2002 Mr. Michael Romano Centurion Development Services 22617 8th Drive SE Bothell, WA 98021 ~ &-% ""' ,§n,4-t,A~ 1z-l"/pz.. RE· Additional Information Request Application No. LOI TY401 & L01POOl6 -Evendell Dear Mr. Romano: This letter is in response to an information request by ODES in their letter dated November 26, 2002. I have analyzed additional drainage complaints in the downstream Evendell basins that were recently released by DOES. The analysis presented below includes proposed mitigations for the downstream problems per Core Requirement 2 of the King County Surface Water Design Manual. Drainage Complaints Drainage complaints along the downstream systems from E vend ell were investigated at King County Water and Land Resource Division as part of the Level I Downstream Drainage Analysis submitted with the project's preliminary technical information report (TIR)(Haozous Engineering, June 2001) However, since the preliminary TIR was prepared, the following drainage complaints and claim information have been released by DDES Complaint ID Date of Complaint KCDOT Action 12/13/01 Request 01- 005339 Complaint 97-1/7/97 0203 Address of Type of Flooding/Description Complaint 13814 160th Nuisance Flooding -Ditch on west side Avenue SE, of 160th Ave SE overtopped road and flooded the owner's driveway and yard. 14028 160th Severe Flooding -Capacity of pipe Avenue SE system in front of house was exceeded. Water overlapped ditch, and flooded ll?ECEi J=..l and ground level floor of home. ... , 1 OCT O 1 2003 Klt~li CUUI~ I Y LAND USE SERVICES F~lE COP Mr. Mike Romano December 5, 2002 Page 2 Complaint ID Claim 31249 Claim 21860 Complaint 97 - 0318 Claim 21699 .. Date of Complaint 1/29/02 1/25/97 1/21/97 I/] 0/97 .. Address of Type of Flooding/Description Complaint 14028 I60'h Severe Flooding -Capacity of pipe Avenue SE system in front of house was exceeded. Water overtopped ditch, and flooded road and ground level floor of home. 14028 I60'h Severe Flooding -Capacity of pipe Avenue SE system in front of house was exceeded. Water overtopped ditch, and flooded road and ground level floor of home. 14038 l 56'h. Severe Flooding -Inlet pipe in front of Avenue SE house overtopped and flooded basement. 14038 I56'h Severe Flooding -lnlet pipe in front of Avenue SE house overtopped and flooded basement. I have also provided additional information regarding the following drainage complaint that was presented in the TIR for the project (Haozous Engineering, June 200 l ): Complaint 97-1/10/97 16046 SE Severe Erosion -Soil eroded from bank 0206 142"a Place is deposited 50 -l 00 feet downstream and contributes to ditch overtopping and garage flooding. Analysis of Complaints The complaints and claims listed in the table above document problems that occurred along the downstream conveyance systems from the proposed Evendell plat. The complaints were filed by property owners due to flooding caused by inadequate capacity of conveyance structures. The hydraulic structures at the locations of each complaint were evaluated as part of the Level 3 Downstream Drainage Analysis (Haozous Engineering, August 26, 2002) prepared for the Evendell Plat. KCDOT Action Request O 1-005339 was filed on 12/l 3/0 l by Mr. Bret Bowden, a resident at 13814 1601h Avenue SE. The ditch on the west side of 160th Avenue SE overtopped the road and flooded the complainant's driveway and yard. King County Mr. Mike Romano December 5, 2002 Page 3 .. DOT responded to Mr. Bowden's action request and cleaned the ditches on both sides of the road. The flooding that motivated Mr. Bowden's call to the county was apparently caused by a blockage in the ditch. Two driveway culverts on the west side of 160th Avenue SE, across from Mr. Bowden's property, were modeled in the Level 3 Downstream Drainage Analysis. The culverts, identified as Pl 16 and Pl 17 in the drainage analysis, were predicted to flood at a 2-year return period. Flooding at these culverts could create a backwater condition in the ditch, thereby causing water to sheetflow onto .Mr. Bowden's property, as did occur when the ditch was blocked. This type of flooding would likely be classified as a "nuisance" problem by the King County Surface Water Design Manual. Complaint 97-0203, Claim 31249, and Claim 21860 relate to flooding that has occurred at the residence located at 14028 160th Avenue SE. Flooding at this location has been a recurring problem Both 160th Avenue SE and a residential structure are subject to flooding. On at least two occasions in the past, the culverts in front of the property have overtopped When flooding occurs, stormwater flows down the driveway and into the garage and ground level floor of the home. This problem is considered both a "severe building" and a "severe road" flooding problem by the King County Surface Water Design Manual. The Level 3 Downstream Drainage Analysis predicted flooding occurs in front of this residence at a 2-year return period Flooding is caused by undersized culverts at locations Pl 13, Pl 14, and Pl 15. Complaint 97-0318 and Claim 21699 were filed by the property owner located at 14038 156th Avenue SE. A 12-inch diameter inlet pipe to a conveyance system, identified as POO I in the Level 3 Downstream Drainage Analysis, is located in front of the complainant's .property. Stormwater in the easterly ditch of 156th Avenue SE overtops the 12-inch diameter inlet pipe and flows down the owner's driveway and into her basement. Flooding has occurred on more than one occasion and has resulted in damage to the owner's washer, dryer, and water heater. This flooding problem is considered a "severe building" problem by the King County Surface Water Design Manual. Based on the Level 3 Downstream Drainage Analysis, the 12-inch diameter inlet pipe in front of the property is predicted to overtop at a 2-year return period. Lastly, a "severe" channel erosion problem is located in the downstream system on the east boundary of the property located at 16046 SE 142nd Place. The channel is within the right-of-way of SE 162"d Avenue. Channel bank erosion that is occurring at this location could be depositing in a flat section of channel 50 to I 00 feet downstream from the eroded area. Sediments in the channel could be contributing to flooding as documented in Complaint 97-0206. In my field visit of the site, Mr. Don Gragg, the property owner, described flooding that impacted his garage in the past A 4-inch pipe drains a catch basin in the driveway near the garage. The invert of this pipe is only 1.4 feet above the bottom of the channel. It appears that when the channel fills, water backs up in the pipe and floods Mr. Gragg' s driveway and garage. Minor channel improvements at this location Mr. Mike Romano December 5, 2002 Page 4 .. would likely improve the existing flooding/erosion and sedimentation problem Alternatively, changes to the configuration of the 4-inch diameter drain pipe could prevent further flooding of the driveway and garage. Proposed Mitigations Level 2 detention standards are required on the Evendell site, and were included in the preliminary drainage plan. for the proposed plat. Prior to receiving recently released flooding information from ODES, described above, we had considered the flooding to be a "nuisance" problem and did not propose mitigations in addition to the Level 2 detention standards. In light of the new information, additional stormwater mitigations will be needed as part of the Evendell Drainage plan to conform with the King County Surface Water Design Manual. Drainage Problems at 13814 and 14028 160'h Avenue SE For the severe flooding problem at 14028 160'h Avenue SE, I recommend upgrading the downstream system as opposed to adopting onsite Level 3 detention standards. In my opinion, in this situation, upgrading the conveyance system along 160th Ave SE by eliminating constrictions, would provide more benefit to the neighborhood and surrounding properties than would adopting a more stringent onsite detention standard. By upgrading the system, the existing "severe roadway" flooding problem would be fixed, as would the existing "severe building" flooding at the residence located at 14028 160th Ave SE. Proposed upgrades would also solve the nuisance flooding problem at 13814 I 60'h Avenue SE. While adopting onsite Level 3 detention standards would conform to requirements in the Surface Water Design Manual. only conveyance upgrades would fix the existing problems. Pipes that would need to be upgraded would include the following: 0 Two driveway culverts on the west side of 160th Ave SE (PI 16 and PI l 7) ~ Cross culvert under 160th Ave SE (P 115) ~ Culvert immediately upstream the property at 14028 160th Ave SE (Pl 14) 0 Existing 18-inch diameter pipe at 14028 160th Ave SE (Pl 13) Upsizing these pipes would prevent the ditch from overtopping. Stormwater would be contained in the roadside ditch and would not be allowed to flow across the road or onto adjacent properties, as has occurred in the past at 13814 and 14028 160th Avenue SE. Drainage Problem at 1403 8 156th Avenue SE For the severe flooding problem at 14038 156th Avenue SE, either onsite Level 3 detention standards could be adopted in place of Level 2 standards or the capacity of the Mr. Mike Romano December 5, 2002 Page 5 .. .. existing 12-inch inlet pipe could be increased. Increasing the capacity of the 12-inch inlet pipe would likely entail upsizing at least 115 feet of 12-inch diameter pipe. By upsizing this reach of pipe to 18-inch diameter and increasing the head above its crown at the inlet, the capacity of the inlet pipe would be increased. The frequency of flooding wouid be reduced from a 2-year return period to approximately a I 0-year return period. Drainage Problem at 16046 SE l 42"d Place For the severe erosion problem along the east boundary of the property at 16046 SE 142nd Place, the proposed Level 2 RID standards provide the mitigation required by code. Other types of mitigations to reduce erosion at this location, such as bank stabilization in the eroded section of channel or Level 3 RID standards, can be imposed through the King County Surface Water Drainage Manual under certain circumstances. Cleaning sediment out of the flat section of channel and stabilizing the eroding banks immediately upstream would reduce flooding to the driveway and garage at 16046 SE I 42"d Place. Alternatively, the owner of the property could explore the possibility of retrofitting the outlet of the drainpipe from his property with a flap gate or extending the outlet of the pipe an additional 80 to I 00 feet downstream to where the flood water surface in the channel is below the upstream invert of the pipe Impacts of Mitigations on Downstream Properties I do not believe that upsizing the conveyance pipes along I 60'h Avenue SE would aggravate flooding that occurs further downstream. The amount of runoff that flows out of the constricted ditch during floods along 160'h Avenue SE is enough to cause damage to affected properties. However, containing this water in the conveyance system would likely not result in a substantial increase in flow rate. Furthermore, because the storage volume in the roadside ditch is relatively small and provides insignificant attenuation, upsizing the pipes as proposed would not result in an increased flow rate at the downstream end of the improvements. If you have questions regarding these analyses or need additional documentation, please do not hesitate to call me. Sincerely, Edward McCarthy, Ph.D. PE. Hydrologist Mr. Mike Romano December 5, 2002 Page 6 .. .. References Haozous Engineering, August 26, 2002, Evende/1 Plat -Level 3 Downstream Drainage Analysis Renton, Wash. Haozous Engineering, June 15, 200 I. Evende/1 Piaf -Preliminary Technical fnforma1io11 Reporl. Renton, Wash. King County Department of Natural Resources, 1998. King C011111y Surface Waler Design Manual. Seattle. March 10, 2003 Mr. Michael Romano Centurion Development Via e-mail Dear Mr. Romano, .. Mark Heckert Habitat Technologies P O Box 1088 Puyallup, WA 98371 To address some of the questions which were brought up at the re-zoning hearing regarding the Evendell development, I visited the project site on March 8 and March 9, specifically looking for evidence of raptor utilization. I observed the site on March 8 in the early morning and on March 9 in the afternoon. I scanned the .trees on the site with binoculars for evidence of utilization. I observed what appeared to be a crow nest in the northwest comer. I did not find any evidence of utilization by red-tailed hawks, or any other raptor, on the site. If you have further questions or concerns please contact me. L0,3 R O 38 .61) CY .. .. March 7, 2003 TO: Laura Casey, Environmental Scientist III FM: Nick Gillen, Environmental Scientist III ~ b) RE: LOIP0016-Red-tailed hawk nest review Per your request, I visited the above site on March 7, 2003 to look for red-tailed hawk nest(s) in the western portion of the site. The weather on this date was overcast with light rain and air temperatures of approximately 39 degrees. There was a light dusting of show on the ground. Upon arriving at the site, I observed that the entrance gate was locked. l crawled through the gate and proceeded to the front door of the residence to identify myself. I knocked and rang the doorbell, however there was no answer. I proceeded to walk through the western portion of the site to look for hawk nest(s) in the upper canopy of the trees in this area. As you know this portion of the site consists of a fairly mature stand of Douglas fir trees with a few deciduous trees. Observance of the upper most canopy is difficult if not iinpossible. I traversed this portion of the site in a north-south and east-west direction to obtain as many angle views as possible. I also stopped to listen fairly often during my walk through. l did not observe any hawk's nest(s) in this portion of the site. l also did not see or hear any red- tailed hawks in this area of the site. I hope this is helpful. F~lE COPY . 1,os 1tfo ss ~8 OCT O 1 2003 Kim, L,UUIHY LAND USE SERVICES Exhibit No. ~2. ;::-:"-=----- 1 t em No. l .. J.'J/ PooJ tp t M /7':f/<;IO, Received 3 '/Or O] King County Hearing Examiner I ___ Permjt_6Qpji<;_<!_ti_on Reoort.-DOES _.l(_;n ... C.",~". 11: .... L: ____ ---------- l'cnnit Application Report -DDf ... '"~;_rg County. Washington ;._ ,.· ~~: .. Page I of I ~Wi4i'h34-W Elxspa,~MGO'llt oU !ll)e~ft@pllll'ilQO'lli ilO'ilG IE0'11'1Dr'11l)O'ilffl<BO'llUII Setn1ic• • DOES HomeQ~ 3 Search Results for File No: L01P0016 Reported through: October 13, 2003 A/Pio No Permit Urban p oj t Title/Des ·pt· Anniied Status A p1· Type Rural r ec en ion ..,.. p icar L01P0016 PRE-PLAT URBAN EVENDELL PRE PLAT&REZONE 07/06/2001 PRELAPPR US LAND DEVELOP! L02V0024 SWM-VAR URBAN Evendell Drainage Adjustment 03/28/2002 GRANTED U S LAND DEVELOP L03RE038 REV-PLAT URBAN 10/01/2003 APPLIED US LAND DEVELOP! List Date: October 21_. 2003 King County ODES I New Application Search I News I Services I Comments I Searc Links to external sites do not constitute endorsements by King County By visiting this and other King County web pages. you expressly agree to be t>ound by terms and conditions of the site. The details. F~LE COPY hnp:1 /appsO I .rnetrokc.go\'1w,,w6/ddes,,scripts1permlist.c 1·m ·, 1··,,. <JL.f\1/l'u., \ ll/2 I 200_; ., . . _r,ennit Application Repor1 -Dl~ng County. Washington .. ® King Cmsmy llllmrmlll llmllmll 4i4@1144M ± 1¥144,W Departmell1lt of D<sveDopMent and IEll1lvircnmental SEINiCH • DOE 5 i-lom~:..ge Oll'lllill'lle Permit Applications Report 3 Projects or actions associated with parcel no: 1423059022 Reported through: October 13. 2003 Page I of I A/P/D No Permit Urban Type Rural Project Title/Description L03RE038 REV-PLAT URBAN Applied Status 10/01/2003 APPLIED Applica1 US LAND DEVELOP! L03L0013 BLA URBAN PLAT OF EVENDELL 03/17/2003 REVIEWED US LAND DEVELOP! L01 P0016 PRE-PLAT URBAN EVEN DELL PRE PLAT&REZONE 07/06/2001 PRELAPPR US LAND DEVELOPI List Date: October 21. 2003 King County DOES I New Application Search I News I Services I Comments I Searc links to external sites do not constitute endorsements by King County. By visiting this and other King County web pages you expressly agree to be bound by terms and conditions of the site, The details. hnp:/iappsO I .metrokcgo,·/www6iddes1scriptsipennlis1.cfni''parcel _110= 1-123059022 10/21 200_; --~ -~:ennit Application Repon -DD .. ing County. Washington (® KiBlg CcuMv -llml!lll Wi4fii44W # 1¥14,M DElpa~mEllJ\lfc of ID<a,acslcpmcsnfc i!llJ\ld lell\l'1ill"Orromental §en,icu , DOE<:; 1-tomta~ Oll'illo1111e Permit Appiucatioll'ils Report 1 Search Results for File No: L01TY401 Reported through: October 13, 2003 !'age I of A/P/D No Permit Urban Proi·ect Title/Description Applied Status Applicant Type Rural L01TY401 REZONE URBAN EVEN DELL REZONE-L01P001607/06/2001 DENIED CENTURION DEVELOPME List Date: October 21, 2003 King County DOES I New Application Search I News I Services I Comments I Sear, Links to external sites do not constitute endorsements by King County. By visiting this and other King County web pages. you expressly agree to be bound by terms and conditions of the site. The details. http:11apps!l I .metrokc.~n,1wwwo1<l<les/scripts/perm I ist.cfm 111/2 I ~IHI.~ • ® King County Department of Development and Environmental Services 900 Oakesdale Avenue SW Renton, WA 98055-1219 October 17, 2002 Mike Romano .. Centurion Development Services 22617 Eighth Drive SE Bothell, WA 9802 l .. ocr O 7 ·.. ?()07 l A 1,,, ' rifVD ''-l, . Usr Vuiv, ( Edward J. McCarthy, P.E.SfRv/C[s Haozous Engineering, P.S. 14816 SE 1161h Street Renton, WA 98059 RE: Evendell Subdivision SWM Adjustment Request (File No. L02V0024) Dear Applicant and Engineer: The Land Use Services Division, Engineering Review Section, has completed review of the adjustment request for the Evendell subdivision. You are requesting approval for an adjustment from the 1998 King County Surface Water Design Manual (KCSWDM) Core Requirement No. 1, Section 1.2. I, Discharge at the Natural Location. Our review of the information and a site visit provides the following findings: 1. The prorosed Evendell subdivision is located west of 1601h Avenue SE and south of SE 136' Street. The 75 lot, 11.7 acre, proposed Evendell subdivision is filed under Land Use Services Division (LUSD) file number LOI POOi 6. 2. The Evendell subdivision is located in the Orting Hills sub basin of the Lower Cedar River basin. The site is subject to the Level Two flow control and Basic water quality requirements of the 1998 KCSWDM. 3. The site consists of two adjoining, rectangular areas south of SE 1361h Street split by 1581h Avenue SE. The smaller, western rectangle is 1.9 acres in size, while the larger, eastern rectangle is 9.8 acres. A common ridgeline passes approximately north- northwest to south-southeast through the two areas with the majority of the site draining to the east The western subbasin sheetflows in a southwest direction through large, single family rarcels and is eventually intercepted by a ditch drainage system on the east side of 1561 Avenue SE and flows south. The eastern subbasin sheetflows to the southeast and is eventually intercepted by a ditch system on the west side of 1601h Avenue SE and flows south. Both downstream drainage paths eventually recombine · · in an unclassified tributary of the Lower Cedar River. Most upstream flow is intercepted by ditches on the north side of SE 136'h Street and is bypassed around the project site or through the wetland area in the northeast comer offfiH!®·fEiVF.O F~lE COPY L03R 038 OCT O 1 2003 KING CUUNTY LAND USE SERVICES @ . ' Evendell/L02V0024 October 17, 2002 Page 2 of3 .. .. 4. The proposal is to collect most runoff from the project site and direct it to two facilities designed to separately accommodate drainage from the western and eastern areas of the site. The result is that 0.58 acres of the eastern subbasin will be diverted to the flow control vault and bioswale of the western rectangle of the site; and 0. 73 acres of the western subbasin will be diverted to the combined wetpond/detention pond serving the eastern rectangle of the site. In the developed condition, the net effect is that 0.15 acres of the western subbasin will become tributary to the eastern subbasin's downstream drainage system. As a result, controlled outflows from the western area will be released farther upstream in the ditch system of 1561 h Avenue SE reducing nuisance sheetflow through the intervening parcels. The release l_ocation from the eastern subbasin will remain the same. A negligible shift in flows in the two downstream drainage paths will result. The current conceptual drainage plan indicates that a significant amount of frontage improvement drainage will bypass the planned RID facilities. 5. No decorative ponds or shallow wells have been identified that would be affected by the proposed diversion. 6. The Level One and Three Downstream Drainage Analyses identified conveyance restrictions and nuisance flooding problems associated with both of the proposed downstream discharge locations. Although this adjustment is not addressing the potential for increased flow control standards as a result of the downstream drainage problems, the net impact of the proposed diversion will have a negligible impact on either downstream drainage path. Based on these findings, we hereby approve this adjustment to allow the diversion of on-site runoff between the two drainage subbasins to two separate facilities ultimately draining to their natural discharge locations with the following conditions: I. The release rates for the detention faciiities will be based on the natural and diverted tributary areas being directed to the facilities. 2. The volume for the detention facility will be based on all flows directed to the facilities at full development under current zoning. The allowed release rates will be reduced by any undetained flows that would bypass the proposed subdivision drainage facilities. A IO to 20 percent volumetric factor of safety must be applied to all storm events requiring detention. The design Technical Information Report shall state the factor of safety selected and the basis of that determination. 3. Water quality facilities must be sized based on the entire proposed subdivision draining to the facilities including any required frontage improvements. 4. All onsite or offsite drainage facilities must be located in a public right-of-way or storm drainage tract dedicated to King County. Evendell/L02V0024 October I 7, 2002 .. .. Page 3 of3 5. Additional storm drainage requirements identified by SEPA or the plat hearing review will apply to this project. If you have any further questions regarding this KCSWDM adjustment or the design requirements, please contact Mark Bergam at (206) 296-7270. Sincerely, James Sanders, P.E. Development Engineer Engineering Review Section Land Use Services Division Jim Chan, P.E. Supervising Engineer Site Engineering and Planning Section Building Services Division cc: Curt Crawford, P.E., Managing Engineer, Stormwater Services, KCDNR Randall Parsons, P.E., Senior Engineer, Engineering Review Section, LUSD Bruce Whittaker, Senior Engineer, Engineering Review Section, LUSD Karen Scharer, Planner II, Current Planning Section, LUSD Mark Bergam, P.E., Senior Engineer, Engineering Review Section, LUSD .. King County Department of Development And Environmental Services 900 Oakesdale Avenue SW Renton, WA 98055·1219 Project Name: Evendell Plat Project Address: Portions of Sections 25 36 of T23N, R5E Applicant: Mr. Mike Romano Address: Centurion Development Services 22617 8"' Drive SE Bothell WA 98021 Phone: (425) 486-2563 Date: .Yic/oi?.. .. DOES File No. ODES Engineer/Planned Name: LOIP0016 Bruce Whittaker, P.E. Design Engineer (submitting variance): Phone: Edward J. McCarth , P.E. 425 235-2707 Signature: CJward J· f'lcCa~t~ Engineering Firm Name: Haozous Engineering, P.S. Address: 14816 S.E. 116"' Street Renton, WA 98059 Date: 2/25/02 DESCRIPTION OF THE VARIANCE REQUEST: l!_Standard Request We request that the design of the stormwater facility that manages stormwater from developed portions ofEvendell be allowed to divert drainage from a net area of0.15 acre from the west basin to the east basin on the site. APPLICABLE SECTION(S) OF STANDARDS: The adjustment request is applicable to Core Requirement# I: Discharge at the Natural Location, Section 1.2.1 of the Surface Water Design Manual (King County Department ofNatural Resources, 1998). ~# JUSTIFICATION (see --page attachment): AUTHORIZED SIGNATURES: DDES D1rec1or/Deslgnee Determination: _ Approval &._ DOES Approval Signed: CONDmONS OF APPROVAL: .IQ See attached memo dated: _ _.µ,'--'-J_,_ff-'-"#"-Y-"'--- Denial Date: IO kr '2- ODES, Land Use Services Division, Engineering Review Supervisor: ODES, Bldg. Serv. Div., Site Engineering & Planning Supervisor. K.C. D.D.E.S. King County Department of Development And Environmental Sen·ices 900 Oakesdale Avenue SW Renton, WA 98055-1219 .. .. Evendell -Diversion of Drainage -Adjustment Request JUSTIFICATION: Description of Site The Evendell Plat project is a proposed residential development located within the Renton Highlands area of unincorporated King County. The proposal for development includes buildin& 75 single-family dwellings on approximately 12 acres. Road improvements along SE 136 Street are also proposed. The site is located within the Orting Hills subbasin of the Cedar River watershed (King County Department of Natural Resources, 1999). The site and area of offsite improvements consist of two basins. The east basin consists of9.84 acres under existing conditions. The topography of the east basin generally slopes from the north\\'.est to the southeast. The west basin consists of 1.92 acres under existing conditions. The topography of the west basin generally slopes from the east to the west. The southwest comer of the site has an area of0.73 acre that is included in the westerly subbasin. Runoff from this subbasin sheet flows to adjacent yards of single-family residences to the southwest. Stormwater Design Under developed conditions, stormwater from the site and off site road improvements will be collected and treated onsite to basic water quality standards. A combined wetpond/detention pond will be used to manage runoff in the easterly basin. A vault followed by a biofiltration swale will be used to manage runoff in the westerly basin. Level 2 RID standards are required by the King County Flow Application Maps and are recommended by Lower Cedar River Basin and Nonpoint Action Plan. Under developed conditions, the 0. 73-acre area in the southwest comer of the site will be diverted from the westerly basin and collected in the onsite stormwater system in the easterly basin. To compensate for this diversion of drainage, an area of 0.58 acre in the northwest portion of the site will be diverted from the east basin to the west. The net result will be a diversion of0.15 acre from the west basin to the east basin. Managing runoff with the proposed diversions results in the following features: • Two stormwater facilities will be constructed. A larger combined wetpond/detention pond will manage runoff in the easterly basin and will discharge to the ditch system along 160th Avenue SE. A vault will be used ?. a a References .. .. to manage runoff from the smaller westerly basin and will discharge to the ditch system along 156tlt Avenue SE. The discharge locations from each basin will be to an engineered conveyance system. The net diversion of 0.15 acre is not anticipated to cause any problems in either of the two basins. King County Department of Parks, Planning, and Resources, 1990. Sensitive Areas Map Folio. King County Environmental Division, 1990. Wetlands Inventory Notebook Volume 2 East. King County Department of Natural Resources, 1998. Surface Water Design Manual. King County Surface Water Management Division, 1993a. Cedar River Current and Future Conditions Report. ~ " ~ r • ~ 1 ·=: 0 ~ r > < 0 . :q '" 0 N 0 g ~ N 0 t " ~ w N ;..fl 0 Ji f ~ ' w b C \\\\ 1 \ M~t 'de.vwest'+.· 'deveast' I \ .~tt•,:l ~ L / i~~~-. ---=--~} --==-~ -~ .;---- ,9"301' 623 JO'W X'1.oo'i. X 7.5"8 (INSIDE ~ 1llP Of v.llA.T• 482.5 WATER SURFACE-481,0 BOT. DEF.• 475.0 REQ'O OET. YOI...-= 18,000 CF r· DET. '«lL• 20.ZOO CF (6.73'0} I 0.58 AC DIVERTED 6 0 "" &; ~ I" ro '" " SE non, DVB PMIOY YAlfl:f 10'\Y X JO'l X 5.ll'D (lNSlllE DIM.} roP Of VAULT• 482-5 WATER SURFACE-482.0 ' ear. DET.• 4n.o N88d14'38"W 1306 ' DEi'. WI.a 1,500 CF ----~S?}t}}J_e-ajt_ 1_3(!tf! $~e~~cr~ =---.....,,.___ -·---·~--=--~---,-----... ·~-I 36 . I I ~ 79\ AC \\ ~\ ~~ ""' \) " 0~" \. I' 56 I I /" · 75 . 74 I 73 .L__ FROM EAST TO WEST I I --.----c\11,--_ 7' xC\4~ I 1 _J L 111·~1 J I I _L_j_J 0.73 AJ DIVERTED FROM WEST TO EAST Lot 7 Rbse '- I _ /__! / l-~ ~t" -57 . I ~L~-1~ . -~ l,'Sglsl . I 11 /-L -SlTE-rJ. 1~~ 1...8:-61 Ae-r · -· -1~61 • 60 j 69 J/ 68 -·---J I _/f--- ·-62 . 17-l-·-i y ~', I f---· ~63 j 64 j 65,{ u ~ l y-==: -J-r-: I g ~(O :n j ; ~:z a.. :c ~:5 !:I a:Q. i;lo; ~~ a ,, ;S! ~ :z 8 ::&ti u g:C !o t; en l1. s •IO CIO ll-, ,-.. .. N £ ~ (" .. 111 .:--tlt>< 00 d 3 -;;. ;;;.. ..... -::::. ' M <:>8<"1 o ., Q> §z~~ .. Cl) :lil:IO~ d :,I<< ..... ~2~ C I bl) i5 ..... A I. o rz:l ~§~ ti o .,u ~ Ii ;:J ~ 0 • '"' ., 0 N «I ;,; ::i: t i ~ ~,-.g • t.,.0 g I~ ] ~.r, ~ ~-''l' ., / \ ~.!'~ ' -_, ~~Pwoi'-· ,~.=til-il I' w I' ~: I Evendeil Plat Level 3 Downstream Drainage Analysis ~ff LIE copy IEXPIRES, I L. ______ _ Submilted to: King County DUES 900 Oakesdale Avenue S. W. Renton, WA 98055 Prepared by: Haowus Engineering, P.S. 9957 I 71" Avenue SE Renton, WA 98059 Tel. (425) 235-2707 Fax (425) 254-0579 PEcervEID) : August 26, 2002 OCT O 1 2003 Loa Rf o as . · "'"' 1.,UlJNTY LANO USE SERVICES ll=fl ., " ,: " 9957 Jltn Avenue SE fax (425) 254-0579 August 26, 2002 Mr. Michael Romano /E " fJ I n " " r ! " !I , Renton, WA 98059 (425) 2.15-1707 Centurion Development Services 22617 8th Drive SE Bothell, WA 98021 Re: Evendell Plat -Level 3 Downstream Drainage Analysis DOES File No. Dear Mr. Romano: IP. 5. This letter report documents the methods and results of a Level 3 Downstream Drainage Analysis requested by DOES for the Evend.ell Plat. Separate analyses were conducted for the two drainage courses from the Evendell site. Project Description The Evendell Plat is a proposed residential development located within the Renton Highlands area of unincorporated King County (Figure I). n1e proposal for development includes building single-family dwellings on approximately 12 acres (Haozous Engineering, June 2001). Road improvements along SE 1361h Street are also proposed_ Level 2 RID standards are being proposed for the onsite stormwater facility as is required by the King County Flow Application Maps and recommended by Lower Cedar River Basin and Nonpoint Action Plan. · Site Description The site is located within the Orting Hills subbasin of the Cedar River watershed (King County Department of Natural Resources, 1999). The site is located east of 1561h Avenue SE and is bordered by SE 136th Street on the north and by 160th A venue SE on the east. Cover types on the site include a single-family residence, pasture, and forest. A Class 2 wetland has been identified in the northeast portion of the site. The site consists of two basins with most of the project area draining to the easterly basin. The easterly basin drains to a conveyance system along 160th Avenu.e SE. The westerly basin drains to a conveyance system along 156th A venue SE. Both downstream drainage courses eventually discharge to an unclassified tributary of the Cedar River (King County Department of Parks, Planning, and Resources, 1990). :·I Drainage Complaints Drainage complaints along the downstream systems were investigated at King County Water and Land Resource Division as part of the Level I Downstream Drainage Analysis submitted with the project's preliminary technical information report (TIR)(Haozous Engineering, June 2001). Since the preliminary TIR was prepared, neighborhood comment forms, collected by C.A.R.E., have been reviewed for information about drainage-related problems in the basins. Of particular note, flooding from the ditch on the east boundary of the Evendell site has been observed by Mr. Bret Bowden, a resident at 13814 160th Avenue SE. When flooding occurs, water crosses the road and flows onto Mr. Bowden's property. Mr. Don Gregg, a resident at 16046 SE 142nd Place, has also observed portions of 160th Avenue SE inundated by flooding during the past 5 years. Methodology A hydraulic analysis was conducted for conveyance systems along both 1601h Avenue SE and 1561h A venue SE. The conveyance system along 1601h Avenue SE was evaluated from the east boundary of the site for a distance of 2,300 feet. The conveyance system along 1561h Avenue SE was evaluated from a location due west of the site for a distance of 1,900 feet. Both systems consist of driveway culverts, pipe segments, and open channel. The model Stormshed™ was used to predict runoff rates from contributing basins and to model the hydraulics of the conveyance systems. Stormshed™ is widely applied in similar projects and has been adopted by Washington State Department of Transportation for assessing and designing highway conveyance systems. A field survey of the downstream systems was conducted by a licensed surveyor. Ditch cross sections, pipe inverts, catch basin rims, and road surface elevations were surveyed to obtain data for the Stormshed™ hydraulic model. A summary of each structure surveyed is provided in Table I. Basin boundaries contributing to the conveyance system were based on aerial topography and the Cedar River Basin Plan. The basin boundaries were field-verified and divided into subbasins contributing to various branches of the conveyance system (Figure 2). The easterly basin was divided into seven subbasins (e I -e7), ranging from 1.1 to 33.9 acn:s in size (Table 2). The westerly basin was divided into eight subbasins (wl -w8), ranging from 1.2 to 16.3 acres in size. Cover types and land uses in the subbasins were based on a 1990 aerial photograph and updated for recent development by conducting a field reconnaissance. The basins consist of mostly single-family residential land use with housing densities ranging from about l to 6 dwelling units per acre. Land uses and cover types are shown in Figure 3. The east basin was estimated to have a total of 124.4 acres, with 35.6 acres in forest, 20.2 in 2 pasture, and 68.7 acres in single-family residential land use (Table 3). The west basin was estimated to have a total of 48.3 acres, with 6.5 acres in forest, 7.0 in pasture, and 33.4 acres in single-family residential land use, and 1.4 acres occupied by a church. Based on King County Soil Survey (U.S. Department of Agriculture, 1973) soil types in the basins consist of Alderwood soils. The Santa Barbara Urban Hydrograph (SBUH) model was used to model the runoff from each of the subbasins contributing to the conveyance systems. Curve numbers for the subbasins were based on the weighted averages of the various land uses in the watershed (Table 4). Hydrographs for the 2-, 10-, 25-, 50-, and 100-year storms were routed through the Stormshed™ hydraulic model of the conveyance systems to determine flooding locations and their approximate return periods. The Evendell site and other contributing areas in the basins were modeled under their existing land use conditions. Travel paths for each subbasin were based on aerial topography. The type of flow, flow length, and slope used to calculate time-of-concentrations are summarized in Table 5. Rainfall amounts of2.0, 3.0, 3.5, 3.75, and 4.0 inches were used for the 2-, I 0-, 25-, 50-, and I 00-year storms design storms in the SBUH model. Modeling Results Details of each subbasin modeled in Stormshed are presented in Appendix A. I for the easterly basin and in Appendix A.2 for the westerly basin. Model results for routing the design storm hydrographs through the drainage networks are presented in Tables B. I through B.12 of Appendix B. Table 6 presents a summary of flow rates at key locations in each of the conveyance systems. A summary of predicted flooding, for all surveyed structures, including open channels, is provided in Table B.6 for the easterly basin and in Table B.12 for the westerly basin. The locations and return periods of flooding related to pipes and culverts are identified in Figure 4. Many of the driveway culverts and pipes along 1601h Avenue SE flood at a return period of2-years (Table B.6 and Figure 4). Several reaches of ditch also overtop at this return period, likely as a result of constrictions in the pipe capacities. Modeling results are consistent with drainage complaints from residents along this reach of the drainage course. Similar modeling results were obtained for the westerly drainage course, where several · culverts and catch basins were predicted to overtop at 2-year or 10-year return periods (Table B.12 and Figure 4). Conclusions Several flooding locations with return periods of2°years were identified in the downstream conveyance systems. Flooding in the east basin that overtops and inundates 160th A venue SE is considered a severe road flooding problem by the King County 3 :·I Surface Water Drainage Manual. Residential structures have been flooded at 14028 160'" Avenue SE and at 16046 SE 142nd Place. If the finished space or the e_lectrical/heating components of these residential structures were flooded in the past, the flooding would be classified as a severe problem. Otherwise, flooding that occurs at these residences is considered a nuisance problem. Channel erosion observed along the east boundary of the property at 16046 SE 142nd Place, downstream from Pipe P-110, has been a persistent problem over the past several years and would likely be considered a severe erosion problem. Continued bank erosion is likely at this location, with potential for reducing the capacity of channel sections further downstream where sediment is deposited. The flooding that occurs at the adjacent residence is likely related to the reduction in channel capacity due to sediment deposition from the eroded banks. Based on modeling results and information available, flooding problems in the westerly basin would likely be classified as nuisance problems by the King County Surface Water Drainage Manual (1998). We found no documentation indicating that 156'" Avenue SE or residential structures along the westerly drainage course have flooded in the past. However, a drainage complaint (Complaint No. 97-0318) related to flooding due to a plugged culvert, was not available for review (Haozous Engineering, June 2001). Proposed Mitigations Level 2 RID standards are currently being proposed for new development in the westerly basin of the Evendell Plat. No additional flow control or other mitigations are therefore required in this basin to reduce project impacts to nuisance flooding problems. Level 2 RID standards are also currently being proposed for new development in the easterly basin of the Evendell Plat. With severe flooding and severe erosion problems located in the downstream drainage course, additional measures to mitigate drainage impacts could be required. For the severe road flooding problem along 1601h Avenue SE either of the following mitigations could be required: • Providing Level 3 detention in the easterly basin, OR • Upgrading the downstream conveyance system along 1601h Avenue SE to eliminate road flooding. This would likely entail replacing driveway culverts P-117 and P- 116 on the west side of 1601h Avenue SE, cross culvert P-115, and pipes P-114 and P-113 on the east side ofl60'" Avenue SE (Figure 4). For the severe erosion problem along the east boundary of the property at 16046 SE 142nd Place, the Level 2 RID standards provide the mitigation required by code. Other types of mitigations to reduce erosion at this location, such as bank stabilization in the eroded section of channel or Level 3 RID standards, can be imposed through the King County Surface Water Drainage Manual under certain circumstances. It is our opinion that either stabilizing the eroding section of channel or the use of Level 3 RID standards would mitigate project-related drainage impacts that occur at this location. 4 :·I If you have questions regarding these analyses or need additional documentation, please do not hesitate to call me. Sincerely, Edward McCarthy, Ph.D. P.E. Hydrologist 5 References Haozous Engineering, June 15, 200 I. Evende/1 Plat -Preliminary Technical Information Reporl. Renton, Wash. King County Department of Natural Resources, 1998. King County Surface Water Design Mam,al. Seattle. King County Department of Natural Resources, 1997. Lower Cedar River Basin and Nonpoint Pollution Action Plan. Seattle. King County Department of Parks, Planning, and Resources, 1990. Sensitive Areas Map Folio. Seattle. U.S. Department of Agriculture, Soil Conservation Service, 1973. Soil Survey of King County Area, Washington. Seattle. 6 :·I Table 1. Sumary of Surveyed Strnctures in Downstream System Reach ID Reach Pipe Dia. Manning's Length Upstr IE DwnstlE Slope Type (IN) n (FT) (FT) (FT) (%) East Basin 0-1 IO X-Scction 0.035 48 408.54 407.59 1.99 0-111 X-Scction 0.035 58 409.57 408.54 1.78 0-112 X-Section 0.035 20 411.25 409.57 8.57 D-113 X-Scction 0.035 12 411.86 411.25 5.28 0-114 X-Section 0.035 48 412.96 411.86 2.31 P-110 Circular 24 0.010 60 413.6 412.96 1.06 D-115 X-Section 0.035 3 414.27 413.6 25.24 D-116 X-Section 0.035 33 415.1 414.27 2.48 0-117 X-Section 0.035 24 415.34 415.1 1.01 D-118 X-Section 0.035 25 417.07 415.34 7.01 D-119 X-Scction 0.035 48 419.77 417.07 5.61 D-120 X-Section 0.035 79 420.05 419.77 0.35 P-111 Circular 18 0.013 29 419.3 420.05 -2.56 D-121 X-Section 0.035 6 421.94 419.3 45.68 D-122 X-Scction 0.035 24 422.17 421.94 0.96 P-112 Circular 12 0.013 85 423.42 422.17 1.47 D-123 X-Section 0.035 43 424.16 423.42 1.73 D-124 X-Section 0.065 90 424.6 424.16 0.49 D-125 X-Section 0.065 107 426.13 424.6 1.43 D-126 X-Section 0.065 48 428.17 426.13 4.27 D-127 X-Section 0.035 79 429.74 428.17 1.99 D-128 X-Section 0.035 56 431.36 429.74 2.87 P-113 Circular 18 0.01 124 434.95 431.36 2.91 D-129 X-Section 0.035 12 434.81 434.95 -1.21 0-130 X-Section 0.035 61 436.28 434.81 2.40 D-131 X-Section 0.035 66 439.1 436.28 4.30 P-114 Circular 24 0.024 21 439.59 439.1 2.37 D-132 X-Section 0.035 IO 440.26 439.59 7.02 P-115 Circular 12 0.013 45 441.31 439.59 3.78 D-133 X-Section 0.035 2 441.15 441.31 -7.30 0-133A X-Section 0.035 35 442.14 441.15 2.80 D-134 X-Section 0.035 50 443.4 442.14 2.53 0-135 X-Section 0.035 106 444.67 443.4 1.20 D-136 X-Section 0.035 54 445.89 444.67 2.25 P-116 Circular 18 0.024 28 446.34 445.89 1.62 D-137 X-Section 0.035 3 446.6 446.34 10.15 0-138 X-Section 0.035 88 448.4 446.6 2.04 D-139 X-Section 0.035 106 451.13 448.4 2.58 D-140 X-Section 0.035 55 452.3 451.13 2.15 P-117 Circular 12 0.013 18 452.9 · 452.3 3.39 D-141 X-Section 0.035 3 452.65 452.9 -9.42 D-142 X-Section 0.035 102 454.76 452.65 2.07 D-143 X-Section 0.035 160 459.46 454.76 2.93 D-144 X-Section 0.035 103 462.79 459.46 3.24 D-145 X-Section 0.035 100 466.72 462.79 3.92 .·I Table I (continued) Reach ID Reach Pipe Dia. Manning's Length Upstr IE Dwnst IE Slope Type (IN) n (FT) (FT) (FT) (%) West Basin P-001 Circular 12 0.013 113 378.62 372.66 5.27 D-001 X-Section 0.035 3 379.22 378.62 20.00 D-002 X-Section 0.035 114 381.68 379.22 2.16 D-003 X-Section 0.035 153 388.9 381.68 4.72 D-004 X-Section 0.035 157 397.4 388.9 5.41 D-005 X-Section 0.035 2 396.77 397.4 -31.50 P-002 Circular 12 0.013 25 397.51 396.77 2.96 D-006 X-Section 0.035 3 398.49 397.51 32.67 D-007 X-Section 0.035 35 399.58 398.49 3.ll P-003 Circular 12 0.013 19 400.17 399.58 3.ll D-008 X-Section 0.035 2 400.4 400.17 11.50 D-009 X-Section 0.035 36 400.91 400.4 1.42 P-004 Circular 12 0.013 59 403.71 400.91 4.75 P-005 Circular 12 0.013 9 404.21 403.51 7.78 P-006 Circular 12 0.013 42 406.09 404.26 4.36 P-007 Circular 12 0.013 150 411.17 406.34 3.22 P-008 Circular 12 0.013 157 417.58 411.77 3.70 P-008A Circular 12 0.013 28 418.1 417.58 1.86 P-009 Circular 12 0.013 142 427.25 420.75 4.58 P-010 Circular 12 0.013 86 431.9 427.35 5.29 P-011 Circular 12 0.013 62 434.34 432 3.77 P-012 Circular 12 0.013 33 435.68 434.39 3.91 D-010 X-Section 0.035 3 436.07 435.68 13.00 D-011 X-Section 0.035 48 438.87 436.07 5.83 D-012 X-Section 0.035 53 442.78 438.87 7.38 P-013 Circular 12 0.013 19 444.46 442.78 8.84 D-014 X-Section 0.035 3 444.63 444.46 5.67 D-015 X-Section 0.035 43 446.52 444.63 4.40 P-014 Circular 12 0.013 23 447.67 446.52 5.00 D-016 X-Section 0.035 3 448.08 447.67 13.67 D-017 X-Section 0.035 57 450.3 448.08 3.89 P-015 Circular 12 0.013 22 451.33 450.3 4.68 D-018 X-Section 0.035 3 451.83 451.33 16.67 D-019 X-Section 0.035 52 454.6 451.83 5.33 P-016 Circular 12 0.013 34 457.55 454.6 8.68 D-020 X-Section 0.035 3 457.71 457.55 5.33 D-021 X-Section 0.035 107 °465.05 457.71 6.86 Table 2. Summary of Existing Basin Cover Types by Subbasin Curve Number= Subbasin East Basin cl e2 c3 c4 c5 c6 e7 Site -East Subtotal West Basin wl w2 w3 w4 w5 w6 w7 w8 Site - West Subtotal 81 0 85 0 Till-forest Till-pasture (AC) (AC) -5.8 6.0 5.2 -1.7 -- 4.0 1.8 14.9 3.5 1.8 - 8.9 2.2 35.6 20.2 -- -0.7 -- -- -- 0.8 - 1.6 - 3.8 4.9 0.4 1.4 6.6 7.0 98 0 86 0 98 0 Cover Type Wetland Till-grass Jmperv (AC) (AC) (AC) 12.0 1.9 15.6 7.0 0.7 0.1 0.9 0.2 12.3 5.4 9.8 2.3 -- 0.4 -0.1 0.4 51.4 16.9 2.3 0.6 13.8 1.8 1.0 -0.2 2.7 0.5 1.8 0.4 1.8 1.3 3.8 2.4 0.4 0.0 --0.1 -27.6 7.2 Total (AC) 19.7 33.9 2.4 I.I 23.5 30.4 1.8 11.6 124.5 2.9 16.3 1.2 3.2 2.2 3.8 7.8 9.1 1.9 48.4 :·I -~ Table 3. Summary of Land Uses by Subbasin -···-. ' Subbasin . Forest (AC); East Basin el . e2 . 6.0 e3 . e4 . e5 4.0 e6 14.9 e7 1.8 Site· East . 8.9 Total 35.6 West Basin wl . w2 . w3 . w4 . w5 . w6 0.8 w7 1.6 . w8 3.8 Site· West 0.4 Total 6.5 % Grass % lmp_erv Pasture (AC) 5.8 · 5.2 1.7 . 1.8 3.5 . 2.2 20.2 . 0.7 . . . . . 4.9 1.4 7.0 92.5% 7.5% SFI (AC) .. 4.5 2.1 0.8 . . 4.7 . 0.1 12.1 . 14.5 . . . . 0.6 0.4 0.1 15.6 83.5% 16.5% SF2 (AC) 9.5 6.7 . 1.1 7.9 4.5 . 29.8 2.6 . 1.2 3.2 2.2 . . . 9.2 58.4% 41.6% SF6 (AC) . 13.8 . . 9.8 2.8 . 26.4 . . . . . 3.0 5.6 . 8.6 0.0% 100.0% Wetland . (AC) 0.4 Notes: SF! = Single-family residential with I DU/ Ac; SF2 = 2 DU/ Ac; SF6 = 6 DU/ Ac 36.0% 64.0% Church (AC) . . . . . . . . 0.3 1.1 . . . . . . 1.4 Total (AC) 19.7 33.9 2.4 I. I 23.5 30.4 1.8 11.6 124.4 2.9 16.3 1.2 3.2 2.2 3.8 7.8 9.1 1.9 48.3 Table 4. Curve Numbers for Subbasins Subbasin Pervious Pervious /mperv CN (AC) (AC) East Basin el 85.7 17.8 1.9 e2 84.7 26.9 7.0 e3 85.3 2.3 0.1 e4 86.0 0.9 0.2 e5 84.8 18.1 5.4 e6 83.2 28.1 2.3 e7 81.0 1.8 - Site -East 81.8 11.1 0.5 West Basin wl 86.0 2.3 0.6 w2 86.0 14.5 1.8 w3 86.0 1.0 0.2 w4 86.0 2.7 0.5 w5 86.0 1.8 0.4 w6 84.5 2.5 1.3 w7 84.5 5.4 2.4 w8 83.4 9.0 0.0 Site - West 84.0 1.8 0.1 Table 5. Travel Path Distances and Slopes for Pervious Land Areas ::·,_,··. _:'.: ': .. 'i.);t:1. 'Sii'eitiilo11J .· Delta ·.· . . Shallow Flow Delta Channel Flow .. Delta '{,:'.·C:;.'~\f;}:i;;,/\~: --,···. ., :subbasiht /Distance · · · Elev. Slope. Distance ·Elev.· Slope Distance Elev. Slope \· ·/-_' . : '.';{~? EliiJJ/:e '.< . (FT) (FT/FT) (FT) (FT) . (FT/FT) (FT) (FT) (FT/FT) East Basin el 300.0 5.0 0.017 1,484.0 20.0 0.013 950.0 10.0 0.011 e2 300.0 5.0 0.017 922.0 15.0 0.016 1,824.0 18.0 0.010 e3 300.0 5.0 0.017 264.0 3.0 0.011 106.0 3.0 0.028 e4 300.0 5.0 0.017 200.0 4.0 0.020 e5 300.0 8.0 0.027 1,248.0 23.0 0.018 705.0 10.0 0.014 e6 300.0 3.0 0.010 1,777.0 35.0 0.020 e7 300.0 3.0 0.010 Site -East 300.0 3.0 0.010 876.0 13.0 0.015 West Basin wl 2,610.0 70.0 0.027 w2 300.0 5.0 0.017 585.0 70.0 0.120 w3 300.0 32.0 0.107 272.0 13.0 0.048 w4 300.0 10.0 0.033 292.0 22.0 0.075 w5 300.0 30.0 0.100 322.0 22.0 0.068 w6 300.0 2.0 0.007 613.0 40.0 0.065 w7 300.0 20.0 0.067 655.0 40.0 0.061 w8 300.0 20.0 0.067 1,020.0 70.0 0.069 Site - West 210.0 10.0 0.048 - :.£.. Table 6. Peak Flow Rates at Selected Locations. Storm Return Period Location 2-Year JO-year 25-Year 50-Year JOO-Year (CFS) (CFS) (CFS) (CFS) (CFS) East Basin P-1 IO 12.0 24.5 31.6 35.3 38.9 P-111 12.1 24.9 32.0 35.6 39.4 P-112 9.9 20.0 25.5 28.3 31.2 P-113 I0.2 20.3 25.9 28.7 31.6 P-114 I0.2 20.4 25.9 28.8 31.7 P-115 7.4 15.2 19.4 21.6 23.8 P-116 7.3 14.9 19.1 21.2 23.4 West Basin P-001 6.8 13.7 17.5 19.4 21.2 P-002 6.2 12.2 15.4 17.0 18.6 P-006 4.8 9.6 12.2 13.5 14.7 P-008A 4.1 8.4 I0.8 11.9 13.1 P-009 3.8 7.7 9.8 10.9 11.9 P-013 3.2 6.7 8.5 9.4 10.4 P-015 3.0 6.2 8.0 8.8 9.7 P-016 2.8 5.7 7.3 8.1 8.9 Note: Flow rates are those predicted by Storrnshed using the SBUH method. a SOURCE: USGS 7.5 x 15 Minute Series-Renton, Washington SCALE: 1 :25 000 TfTlE PAGE \ '; . --...-.:--'.\. . \\ f'\\\ ' ,\ I \ 0 Figure 1. Vicinity iVlap 1-5 01/03/01 0 200 "" SCM.£ [H f'C£T -; '. ' ~ I; , > I / I " s I <· .. .i.. il) -· ;,.i: ,-·-,; if ,'"•I · ... ~ I ' .. -:;l, ''/lo, ,·"::i t \ ....... , •• :., 1 ,\~ ·~i~~~. ·""'°"'':"··ff·"·;;:\ ······-··::;{.,.'"~',,;.;:~;:::;Ti 1 l' ' ,, :>-,,, ·--i:··\·,·T"T., ~ \ ~ 'i' \ j t ~ ' \ " l i \ ! 1 '' ''·~" t..t ;\ \".·/ 11l ,l\--,~,/ / > i ,..,.J t ~.~, !, .. r ! [J t\, \ju·~, .. . ·"/ \t ; ,. __ .,". , ~. ' '.d ·;i~. '-I ,.-:·f .P -~ ... ,.\ { \ ;;I,-,... ·;·,,,( ; "h , .. , ..... 1 '! \ "• \ .,,, ii '< .... ~ H , I Ir! '··-<'' • I, ... }'11 • ' ', 'i, V ·, ; \ ' .,., ,. . \ l'-l ,:~ ·,, '1 ' • l ' '-·,, ., . ) ) (\ ''3J l \ '~ i y,, \ \ 1·l · ,,, ... ,f __ ~\ l\~:s·~-) ,~r)' I \ \ .1 ... \ \ i ·,) ,, '· ... ' ''-1 1 ...... " .. , ........ ... ' '.',, __ , - u ' t: •. , \ \ I ' ' \j 111 •. -· ' ' 1,, el ,,l ··,-...,,. ~ ..... ' ( .. ,.:;, :.\j ,., .•• !.''·•' ·'~--~y, i ~~ "'"'' ·,;;1r / :l l ···.'.J-~-~-.. --:H: ,. I·' I;, :'1 -., I ~ \) ,, '\l:1 •. 1, w2 ,/' \ s:I 1iil/\""" ---·" f-t p ,-~~ .. n 111 , , __ ./ \ :t il ' "I( (.,W·u .... u •-..i•.~· . ' .. i,il '""1-, \ ~!: \ \ '$!· t -..,, ,, ' ' .ii ' \il ·z1 · c~·" r:;1"~l i--' ; \. \i'':. ' h· \ \ \,; ' ' ··~-; t.i\ . ,. u\ .. \:.J n ::$->I''' i ·r ,...,v, ~--,, .-.,..-~ . e2 1;~ \f \;:, \t ', . ,, ... ::.~.-: .:. .. :;.:::;:.;: ..... r;: f :''::,;cc, .... ,,"'·:~,;::_, .. '", 'ti ' .. ,'\ ",,,. \ !f "--\ !' ' "\-, ,/''_~r : ... ,. "">,,.,·,,·~,..... ...,,~ ................ ,, ! .i s' .f ' .' 1:1 "' ~ i!: ~ , , ,,. ·...-;, '1 ··.:.\_~ ..... ....... '""''"'""'' ~-~ n .. ..., ! . .,, u I· Cl, 5 .., .l ' ............ <.t ';t) 11· .. \):;·,.,, .. /}ii)'{) e5 '.\:t ~) ·. w2".:. l'i'''. ' '\ \ ··~ 1· ,, ' "t ~, v•·:••-··\ ':!, •. .. l .~''"1',· (;'""'·, '.60 TH 'A:VE -· SE''.:B'AS1IN'.• I /·.,· -.,. ,.,,-..::-::; ::''·>'.;:.,_ ·;~ ... :-:·: ~:c: ... ~~.:::J\·:-~~:·~ .. / ... \ ,, \ '."' ,~,,, I ,.( .,. '<::-. _,, .. .., ..... 1 .... 1.., !1 , .. , ''l'i ,, ' ·, ,: . ;1,., V u (; t·, I ' ' \ ,•'\ ··,,i ' "II' 1'; f ... [ .)',', , 4 ~ 1 EVENDELL I ./ •ex.rr;~t' ./(9,3 AC) ,... u··· 1:· !\ , ' :i \ '~t" ' ( \~ ., '··· \ .'· '' ' l .}./ !'--).. l ., \ ' \i 1,_\ ,' ,.~ , I ill \ ·-.....~(; /" / 1 v..,..1 ~ .... l, ... ' ,,,. .. , ~"' ... \ ',.{ ! \ .... ,t l .. , .. t d JJ,.,,··•'" ... )·,;::~:., ~~?).. )\it •,'.:}/, _'t:; lif- e 6 ~, ' ·· .. t.1. r.· ...... 1 "\ ,.. -...., \ (J ·~··::~·':'•··-~ ''- '< ' ...... , .... -:. ', ~l .,,, e3 td i f~p'i:~c A VE;, . . ,. l ,.. ii ,. \i..·.w7 •. ~~ .,,""' ,,..... . -~';:, ~ ,.: I '·· (., '• . k. ..,...,..,,,-•""""'"''" , L.J if;} ' ) -,~i • /"1 ("),~;, ........ ''•"•)> \,.• 'L .. /J.: I .;-~ • \,, ;t ,,.,•,,.,._ '}·,•(; {:,4,.,j,.,,-·e•.-,.,_,," in~ • ~ ' i, 'I .. '> I\ . \ ,...,, T /\ "'\ ' '('·o !l \. ···,. ... ......... ~.......... \ si .,r~q ... ....,,, \ I .) .. ,, ! ...... ., .. , •, \ 1 •':i ... ,,,,, .-""'''"'"•,, ·,. \ \ l /: · U , ',. , r,. \ ·, , ; :\>, } . ..-·w-8-.. , \ \ " SIT~ IS, 17~ QF ,) ',{ / . 1 \. '·,,, _,rtRIBIJ.TA~Y '{IRit:-r'''" ·~ \. ·,,., ~\ 'I" \ ·, \--~ ,~· J \ ,, l: '\, \, \\ '\ .i \ • ..!,· .,. \.,,r'\ \ i \I '\ ,• \ ,J \~ ;1.,t'~\ ' ...; ... r\, \ \ \ \ i q ,' ' 1 ... . '\ \ \ SE \ C ,r•"'\:."'·•-, i1;. ;:,_ I'·., i ' ' .l )!"' ' i' , ..... . ,i \ .f) 1,.1,, '·::",.SITE: IS 16)( OF }··, ' :,, .... , .. ,~-,,, .... ,'-.•--) 1\ •\«, .. :-o• 11'TRTBUTARY ARE:AJ \ ):(_ '·\ ·, .. ·" .'.-.i•' ! j:J. ,(',\~,,t "I.: "°\ '\ I _.,,..,.. :--~. \ "'··~ ·-,~,,-'" . ; . ~-1,i,,,,\ ~ -•.• .... \ . ' • -:::;.,<J<f " ·,~,. '>, '1.. / ,~o ~1 I · · ·.. .. ··,., \ ,.... .../ r =1 r-~,.,,,,, .. r·· '\, '\. . "• J/~. :· ·-'"', , 0 -1~: ; irti:,C, :,,,2;;~~ I //''""1 .:,..'ii. ·-. U\ \, ·• ' ' ·•"'.,t ·:y., t.J i '\. ,,,, ., ·.·,+· ·- ··- SITE IS 97. OF TRIBUTAR'I ~BEA I PROJECT NO. Haozous Engineering I CIVIL ENGll£ERIHG EVENDELL PLAT I 14816 SE U6TH ST, RENTON, \/A 980:59 -35-2707 , .......... .. ,., FlCURE .... 8/12/02 Drainage I OMDI lffl ..... Basins 2 .... 8/12/02 200 "' SCALE IN rttT ,; ~ ., ;- 1 / / :;. .<.· .. Haozous Engineering CML ENGll£ERING 14816 SE 116TH ST, RENTON, '1,/A 980:,9 423-235-2707 EVENDELL PLAT PROJECT NO. I ROO~ .... 8/12/02 ;..,...., 1 .. "' I Land Use/Cover Types I 3 r.lM 8/12/02 ,.,.... .. ..... 0 ... ... -.. IHFUT LEGEND C CQ tch BQS)n P5 Pipe ID 110-YeQr I F'looollng Return Period i I h~-- :j .I ,j i ·····---·"""· ;,,..,,_ -, .. '! ' ('· :,:: -------·.,. B-· P117.!, · 1~-YeQr l -h·:, .. - ,.,, '"'"· il• i .,, P116 _:,:; • P115'' : ~ 12-YeQr I , I ., ;-; t Ptt]f~ ,. ' I· !~ . '" . ' J !:.: C ::;, ·j C :.:1.' :. , .. llaozous, Engineering CML IJGlhEERWi IAel6 IE 1161M IT, RIIIIIIN, VA - 12S 118 2101 OES1Gt4ED 8¥. 11,1!1 D"'T'E'.: !VII/Ill ORAv.tl BY: 11,1!1 DAit: 1/11,/111 ,,:,.,.,,.,;, ,, ,,, 'f'110Th !tO-YeQr j EVENDELL PLAT Flooding Locations PROJECT NO. FIGURE 4 Appendix A. Stonnshed Model Input/Output Design Storm Rainfall Amounts Return Rainfall Period Amount (YRS) (IN) 2 2.00 10 3.00 25 3.50 50 3.75 100 4.00 Appendix A.1. Subbasin Summary-East Basin Drainage Area: e-001 Hyd Method: SBUHHyd Peak Factor: 484.00 Storm Dur: 24.00 hrs Area Pervious 17.8000 ac Impervious 1.9000 ac Total 19.7000 ac Pervious CN Data: Subbasin e-001 Perv Impervious CN Data: Subbasin el Imperv Pervious TC Data: Flow type: Description: Sheet e 1 sheet Shallow e 1 shallow Channel el channel Impervious TC Data: Flow type: Description: Fixed None Entered CN 85.70 98.00 85.70 98.00 Loss Method: SCS CN Number SCS Abs: 0.20 Intv: 10.00min TC 0.98 hrs 0.17hrs 17.8000 ac 1.9000 ac Length: Slope: 300.00 ft 1.70% 1484.00 ft 1.50% 950.00 ft I. I 0% Length: Slope: 0.00 ft 0.00% Coeff: Travel Time 0.1500 31.85 min 11.0000 18.36 min 17.0000 8.88 min Coeff: Travel Time 10.0000 10.00 min Drainage Area: e-002 Hyd Method: SBUH Hyd Peak Factor: 484.00 Storm Dur: 24.00 hrs Area Pervious 26.9000 ac Impervious 7.0000 ac Total 33.9000 ac Pervious CN Data: Subbasin e-002 Perv Impervious CN Data: Subbasin el Irnperv Pervious TC Data: Flow type: Description: Sheet e2 sheet Shallow e2 shallow Channel e2 channel Impervious TC Data: Flow type: Description: Fixed None Entered CN 84.70 98.00 84.70 98.00 Loss Method: SCS CN Number SCS Abs: 0.20 Intv: 10.00 min TC 1.01 hrs 0.17 hrs 26.9000 ac 7.0000ac Length: Slope: 300.00 fl 1. 70% 922.00 ft 1.60% 1824.00 ft LOO% Length: Slope: 0.00 ft 0.00% Coeff: Travel Time 0.1500 31.85 min 11. 0000 11. 04 min 17.0000 17.88 min Coeff: Travel Time I 0.0000 10.00 min Drainage Area: e-003 Hyd Method: SBUHHyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 0.20 Storm Dur: 24.00 hrs Intv: 10.00 min Area CN TC Pervious 2.3000 ac 85.30 0.60 hrs Impervious 0.1000 ac 98.00 0.17hrs Total 2.4000 ac Pervious CN Data: Subbasin e-003 Perv 85.30 2.3000 ac Impervious CN Data: Subbasin e3 lmperv 98.00 O.IOOOac Pervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Sheet e3 sheet 300.00 ft 1.70% 0.1500 ·31.85 min Shallow e3 shallow 264.00 ft 1.10% 11.0000 3.81 min Channel e3 channel 106.00 ft 2.80% 17.0000 0.62 min Impervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Fixed None Entered 0.00 ft 0.00% 10.0000 10.00 min Drainage Area: e-004 Hyd Method: SBUHHyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 0.20 Storm Dur: 24.00 hrs Intv: 10.00 min Area CN TC Pervious 0.9000 ac 86.00 0.55 hrs Impervious 0.2000 ac 98.00 0.17 hrs Total 1.1000 ac Pervious CN Data: Subbasin e-004 Perv 86.00 0.9000 ac Impervious CN Data: Subbasin e4 lmperv 98.00 0.2000ac Pervious TC Data: Flow type: Description: Length: Slope: Coeff Travel Time Sheet e4 sheet 300.00 ft 1.70% 0.1500 31.85 min Channel e4 channel 200.00 ft 2.00% 17.0000 1.39 min Impervious TC Data: Flow type: Description: Length: Slope: Coeff • Travel Time Fixed None Entered 0.00 ft 0.00% 10.0000 10.00 min ' :•, Drainage Area: e-005 Hyd Method: SBUH Hyd Peak Factor: 484.00 Storm Dur: 24.00 hrs Area Pervious 18.1000 ac Impervious 5.4000 ac Total 23.5000 ac Pervious CN Data: Subbasin e-005 Perv Impervious CN Data: Subbasin e5 lmperv Pervious TC Data: Flow type: Description: Sheet eS sheet Shallow eS shallow Sheet eS channel Impervious TC Data: Flow type: Description: Fixed None Entered CN 84.80 98.00 84.80 98.00 Loss Method: SCS CN Number SCS Abs: 0.20 Intv: 10.00 min TC 1.81 hrs 0.17hrs 18.IOOOac 5.4000 ac Length: Slope: 300.00 ft 2.70% 1248.00 ft 1.80% 705.00 ft . 1.40% Length: Slope: 0.00 ft 0.00% Coeff: Travel Time 0. 1500 26.47 min 11.0000 14.09 min 0.1500 68.19min Coeff: Travel Time 10.0000 -10.00 min Drainage Area: e-006 Hyd Method: SBUH Hyd Peak Factor: 484.00 Storm Dur: 24.00 hrs Area Pervious 28.1000 ac Impervious 2.3000 ac Total 30.4000 ac Pervious CN Data: Subbasin e-006 Perv lmpervious CN Data: Subbasin es Imperv Pervious TC Data: CN 83.20 98.00 83.20 98.00 Flow type: Description: Length: Sheet e6 sheet Shallow e6 shallow lmpervious TC Data: Flow type: Description: Fixed None Entered Loss Method: SCS CN Number SCS Abs: 0.20 lntv: 10.00 min TC 1.35 hrs 0.17hrs 28.1000 ac 2.3000 ac Slope: Coelf: Travel Time 300.00 ft 1.00% 1777.00 ft 2.00% Length: Slope: 0.1500 5.0000 Coelf: 39.38 min 41.88 min Travel Time 0.00 ft 0.00% 10.0000 10.00 min Drainage Area: e-007 Hyd Method: SBUHHyd Peak Factor: 484.00. Storm Dur: 24.00 hrs. Area Pervious 1.8000 ac Impervious 0.0000 ac Total 1.8000 ac Pervious CN Data: Subbasin e-007 Perv · Pervious TC Data: Flow type: Description: Sheet e7 sheet CN 81.00 98.00 81.00 Loss Method: SCS CN Number SCS Abs: Intv: TC 1.44 hrs 0.00 hrs 1.8000 ac 0.20 10.00 min Coeff: Travel Time Length: Slope: 300.00 ft 1.00% 0.4000 86.31 min Drainage Area: ex_ east Hyd Method: SBUHHyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 0.20 Storm Dur: 24.00 hrs Intv: 10.00 min Area CN TC Pervious 11.1000 ac 81.80 2. JO hrs Impervious 0.5000 ac 98.00 0.17 hrs Total 11.6000 ac Pervious CN Data: Subbasin ex east Perv 81.80 1 L 1000 ac Impervious CN Data: Subbasin ex_ east lmperv 98.00 0.5000 ac Pervious TC Data: Flow type: Description: Length: Slope: Coeff Travel Time Sheet ex east sheet 300.00 ft JOO% 0.4000 86.31 min Shallow ex east shallow 876.00 ft I.SO% 3.0000 39.74 min Impervious TC Data: Flow type: Description: Length: Slope: Coeff Travel Time Fixed None Entered 0.00 ft 0.00% 10.0000 10.00 min • Appendix A.2. Subbasin Summary-West Basin Drainage Area: w-001 Hyd Method: SBUH Hyd Peak Factor: 484.00 Storm Dur: 24.00 hrs Area Pervious 2.3000 ac Impervious 0.6000 ac Total 2.9000 ac Pervious CN Data: Subbasin w I Perv Impervious CN Data: Subbasin wl Pervious TC Data: Flow type: Description: Time Channel wl Impervious TC Data: Flow type: Description: Time Fixed wl CN 86.00 98.00 86.00 98.00 Loss Method: SCS CN Number SCS Abs: 0.20 Intv: 10.00 min TC 0.26 hrs 0.17 hrs 2.3000 ac 0.6000 ac Length: Slope: Coeff: Travel 2610.00 ft 2.70% 17.0000 I 5.57 min Length: Slope: Coeff: Travel 0.00 ft 0.00% 10.0000 10.00 min Drainage Area: w-002 Hyd Method: SBUHHyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 0.20 StonnDur: 24.00 hrs Intv: 10.00 min Area CN TC Pervious 14.5000 ac 86.00 0.57 hrs Impervious 1.8000 ac 98.00 0.17 hrs Total 16.3000 ac Pervious CN Data: Subbasin w2 Perv 86.00 14.5000 ac Impervious CN Data: Subbasin w2 lmperv 98.00 1.8000 ac Pervious TC Data: Flow type: Description: Length: Slope: Coeff Travel Time Sheet None Entered 300.00 fl I. 700/o 0.1500 31.85 min Shallow None Entered 585.00 fl 12.00% 11.0000 2.56 min Impervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Fixed None Entered 0.00 fl 0.00% 10.0000 10.00 min Drainage Area: w-003 Hyd Method: SBUHHyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 0.20 Storm Dur: 24.00 hrs lntv: 10.00min Area CN TC Pervious 1.0000 ac 86.00 0.27 hrs Impervious 0.2000 ac 98.00 0.17 hrs Total 1.2000 ac Pervious CN Data: Subbasin w3 Perv 86.00 1.0000 ac Impervious CN Data: Subbasin w3 Imperv 98.00 0.2000ac Pervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Sheet w3 sheet 300.00 ft 10.70% 0.1500 15.26 min Channel w3 channel 272.00 ft 4.80% 17.0000 1.22 min Impervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Fixed None Entered 0.00 ft 0.00% 10.0000 10.00min ' ., Drainage Area: w-004 Hyd Method: SBUHHyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 0.20 Storm Dur: 24.00 hrs Intv: 10.00 min Area CN TC Pervious 2.7000 ac 86.00 0.43 hrs Impervious 0.5000 ac 98.00 0.17hrs Total 3.2000 ac Pervious CN Data: Subbasin w4 Perv 86.00 2.7000 ac Impervious CN Data: Subbasinw4 98.00 0.5000 ac Pervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Sheet w4 sheet 300.00 ft 3.30% 0.1500 24.43 min Shallow w4 shallow 292.00 ft 7.50% 11.0000 1.62 min Impervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Fixed None Entered 0.00 ft 0.00% 10.0000 10.00 min • ··1 Drainage Area: w-005 Hyd Method: SBUHHyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 0.20 Storm Dur: 24.00 hrs Intv: 10 00 min Area CN TC Pervious 1.8000 ac 86.00 0.29 hrs Impervious 0.4000 ac 98.00 0. 17 hrs Total 2.2000 ac Pervious CN Data: Subbasin w5 Perv · 86.00 1.8000 ac Impervious CN Data: Subbasin w5 98.00 0.4000 ac Pervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Sheet wS sheet 300.00 ft 10.00% 0.1500 15.68 min Shallow w5 shallow 322.00 ft 6.80% 11.0000 1.87 min Impervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Fixed None Entered 0.00 ft 0.00% 10.0000 10.00min ' ., Drainage Area: w-006 Hyd Method: SBUHHyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 0.20 Storm Dur: 24.00 hrs Intv: 10.00 min Area CN TC Pervious 2.5000 ac 84.50 0.82 hrs Impervious 1.3000 ac 98.00 0.17hrs Total 3.8000 ac Pervious CN Data: Subbasin w6 Perv 84.50 2.5000 ac Impervious CN Data: Subbasin w6 98.00 1.3000 ac Pervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Sheet w6 sheet 300.00 ft 0.70% 0.1500 45.42 min Shallow w6 shallow 613.00 ft 6.50% 11.0000 3.64 min Impervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Fixed None Entered 0.00 ft 0.00% 10.0000 10.00 min Drainage Area: w-007 Hyd Method: SBUHHyd Loss Method: SCS CN Number Peak Factor: 484.00 SCS Abs: 0.20 Storm Dur: 24.00 hrs lntv: 10.00 min Area CN TC Pervious 5.4000 ac 84.50 0.53 hrs Impervious 2.4000 ac 98.00 0.17hrs Total 7.8000 ac Pervious CN Data: Subbasin w7 Perv 84.50 5.4000 ac Impervious CN Data: Subbasin w7 98.00 2.4000 ac Pervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Sheet w7 sheet 300.00 ft 6.10% 0.2400 27.83 min Shallow w7 shallow 655.00 ft 6.10% I 1.0000 4.02 min Impervious TC Data: Flow type: Description: Length: Slope: Coeff: Travel Time Fixed None Entered 0.00 ft 0.00% 10.0000 10.00 min Drainage Area: w-008 Hyd Method: SBUHHyd Peak Factor: 484.00 Storm Dur: 24.00 hrs Area Pervious 9.0000 ac Impervious 0.0000 ac Total 9.0000 ac Pervious CN Data: Subbasin w8 Perv Pervious TC Data: Flow type: Description: Time Sheet w8 sheet Shallow w8 shallow Impervious TC Data: Flow type: Description: Time Fixed None Entered CN 83.40 0.00 83.40 Loss Method: SCS CN Number SCS Abs: 0.20 lntv: 10.00 min TC 0.79 hrs 0.17hrs 9.0000 ac Length: Slope: 300.00 ft 6.70% 1020.00 ft 6.90% Length: Slope: Coeff: 0.4000 9.0000 Coeff: Travel 40-33 min 7.19 min Travel 0.00 ft 0.00% 10.0000 10.00 min Drainage Area: ex_west Hyd Method: SBUH Hyd Peak Factor: 484.00 Storm Dur: 24.00 hrs Area Pervious I. 8000 ac Impervious 0.1000 ac Total 1.9000 ac Pervious CN Data: Subbasin ex west Perv Impervious CN Data: Subbasin ex west Imperv Pervious TC Data: Flow type: Description: Time Sheet ex west sheet Impervious TC Data: Flow type: Description: Time Fixed w1 CN 84.00 98.00 84.00 98.00 Loss Method: SCS CN Number SCS Abs: lntv: 0.20 10.00 min TC 0.38 hrs 0.17 hrs 1.8000 ac 0.1000 ac Length: Slope: 210.00 ft 4.80% Length: Slope: Coeff: 0.2400 Coeff: Travel 23.02 min Travel 0.00 ft 0.00% 10.0000 10.00 min Table B.1. Hydrograph Routing -East Basin -2-Year Stonn ROUTEHYD [] THRU (Existing East) USING TYPE1A AND (2 yr] NOTZERO ACTUAL Reach Area Flow Full Q % Full nDepth Size nVel Nel CBasin / Hyd ac cfs cfs ratio ft tus tus ------------ D-Dum2 19.7 2.1303 122.33 0.02 0.3312 X-Sect 3.0688 ·----e-001 D-Dum1 53.6 6.625 122.33 0.05 0.5728 X-Sect 4.4532 -----e-002 D-145 53.6 6.5953 121.12 0.05 0.5744 X-Sect 4.4169 ---- D-144 53.6 6.5642 117.92 0.06 0.6659 X-Sect 4.3432 ----- D-143 53.6 6.5478 122.41 0.05 0.6381 X-Sect 4.0213 ----- D-142 53.6 6.5467 82.3869 0.08 0.6881 X-Sect 3.5759 ----- D-141 53.6 6.5465 10.3949 0.63 1.6141 X-Sect 1.1146 -- P-117 65.2 7.0246 6.5804 1.07 0.9037 12" Diam 9.4073 8.3784 ex_east D-140 65.2 7.0224 124.5 0.06 0.4782 X-Sect 3.1305 ---- D-139 65.2 7.018 117.81 0.06 0.4685 X-Sect 3.4675 ----- D-138 65.2 7.013 94.8108 0.07 0.6314 X-Sect 3.4413 ----- D-137 67.6 7.2807 . 279 0.03 0.4113 X-Sect -5.3323 -----e-003 P-116 67.6 7.2787 7.2535 1 1.2342 18" Diam 4.6787 4.1046 D-136 67.6 7.2745 61.7242 0.12 0.6832 X-Sect 3.5858 ---- D-135 67.6 7.2645 66.6905 0.11 0.7836 X-Sect 2.9393 ·--- D-134 67.6 7.2596 70.9939 0.1 0.5719 X-Sect 3.6244 ----- D-133A 67.6 7.2557 93.7984 0.08 0.6719 X-Sect 3.6325 ---- D-133 67.6 7.2549 26.6671 0.27 1.4156 X-Sect 1.1841 --- P-115 68.7 7.4254 6.9473 1.07 0.9067 12" Diam 9.9203 8.8456 e-004 D-132 68.7 7.4237 226.87 0.03 0.5902 X-Sect 5.7063 ---- P-114 92.2 10.2247 18.9199 0.54 1.0474 24" Diam 6.1392 6.0224 e-005 D-131 92.2 10.2216 338.51 0.03 0.5631 X-Sect 4.9185 --- D-130 92.2 10.2183 33.2703 0.31 0.8395 X-Sect 4.3224- D-129 92.2 10.2164 8.6723 1.18 -1 X-Sect 1.178 ----- P-113 92.2 10.212 23.5738 0.43 0.6902 18" Diam 12.8615 13.34 D-128 92.2 10.2081 266.41 0.04 0.6392 X-Sect 4.3565 ----- D-127 92.2 10.1973 1354.11 0.01 0.6263 X-Sect 2.0863 ----- D-126 92.2 10.1853 491.48 0.02 0.3323 X-Sect 1.4977 --- D-125 92.2 10.132 3470.27 0 0.3539 X-Sect 0.8642 --- D-124 92.2 9.9841 549.84 0.02 0.2991 X-Sect 0.5983 ----- D-123 92.2 9.9643 3827.85 0 0.4105 X-Sect 1.946 --- P-112 92.2 9.9216 4.3371 2.29 -1 12" Diam 2.2876 5.5221 D-122 92.2 9.9128 50.2681 0.2 0.904 X-Sect 2.771 -- D-121 122.6 12.0698 594.02 0.02 0.2893 X-Sect 10.2968 ---e-006 P-111 122.6 12.0648 15.3148 0.79 1.0036 18" Diam 9.6013 8.6664 D-120 122.6 12.0245 18.2879 0.66 1.4658 X-Sect 2.1936 ---- D-119 122.6 12.0107 17.5281 0.69 0.6067 X-Sect 4.6997 ----- D-118 122.6 12.0027 179.94 0.07 0.4436 X-Sect 5.2531 -- D-117 122.6 11°.9926 61.1492 0.2 1.0638 X-Sect 2.9017- D-116 122.6 11.9823 27.9865 0.43 1.096 X-Sect 4.2499 --- D-115 122.6 11.9814 78.2241 0.15 1.2007 X-Sect 4.2155 --- P-110 122.6 11.972 30.6525 0.39 0.868 24" Diam 9.156 9.757 D-114 122.6 11.9572 47.75 0.25 1.1715 X-Sect 4.2164 - D-113 124.4 12.0112 319.76 0.04 0.6751 X-Sect 5.8978-e-007 D-112 124.4 12.0055 1134.16 0.01 0.5548 X-Sect 5.7484 --- D-111 124.4 11.9853 413.21 0.03 0. 7639 X-Sect 3.7479 ---- D-110 124.4 11.9689 241.55 0.05 0.698 X-Sect 3. 9096 ----- Reh App Bend Junct HW Max El/ Loss Head Loss Loss Elev Rim El Fr Node To Node fl fl fl fl fl fl N-110 408.288 N-111 N-110 409.238 --na----na----na--409.238 411.92 N-112 N-111 409.9703 --na----na----na--409.9703 414.13 N-113 N-112 411.6608 --na----na----na--411.6607 415.64 N-114 N-113 412.5349 --na----na----na--412.5349 415.67 N-115 N-114 414.1314 --na----na----na-414.18 414.08 N-116 N-115 415.5033 --na----na----na-415.5033 416.5 N-117 N-116 415.5562 --na----na---na--415.5562 416.39 N-118 N-117 416.3861 -na--na---na-416.3861 416.39 N-119 N-118 416.626 --na---na---na--41.6.71 416.61 N-120 N-119 418.44 --na----na----na--418.24 418.14 N-121 N-120 420.9399 --na----na----na--. 420.43 420.33 N-122 N-121 421.5157 --na---na----na--421.5157 422.69 N-123 N-122 422.9861 --na----na----na--422.9861 423.31 N-124 N-123 425.626 --na----na----na--423.41 423.31 N-125 N-124 423.64 --na----na----na--423.64 424.05 N-126 N-125 433.8967 --na---na----na--424.9 424.8 N-127 N-126 425.6399 --na----na----na-425.6399 426.02 N-128 N-127 426.0798 -na--na----na-426.0798 426.52 N-129 N-128 427 .6098 --na----na----na-427.6097 428.27 N-130 N-129 429.6497 --na---na---na-429.4 429.3 N-131 N-130 430.9699 -na--na---na-430.83 430.73 N-132 N-131 432.4499 -na--na--na-432.45 432.79 N-133 N-132 437.2623 -na--na----na--436.5 436.4 N-134 N-133 436.5119 --na---na----na--436.03 435.93 N-135 N-134 437 .4999 -na----na----na--437.57 437.47 N-136 N-135 440.3899 --na----na----na-440.25 440.15 N-137 N-136 441.418 --na----na----na--441.418 442.1 N-137A N-137 442.088 --na----na----na--441.99 441.89 N-138 N-137A 445.5185 --na---na----na--442.9 442.8 N-139 N-138 442.9019 --na--na---na-442.9 442.8 N-140 N-139 443.8899 --na----na---na--443.14 443.04 N-141 N-140 444.3999 --na--. --na----na--444.3999 444.84 N-142 N-141 445.6699 -na---na----na--445.6699 446.11 N-143 N-142 446.8898 -na---na---na-446.8898 447.71 N-144 N-143 448.3436 -na---na---na--448.2 448.1 N-145 N-144 448.4599 --na---na--na-447.84 447.74 N-146 N-145 449.6399 -na--na--na-449.6399 449.84 N-147 N-146 452.3699 -na---na---na--452.3698 452.71 N-148 N-147 453.5398 --na---na----na--453.5398 453.89 N-149 N-148 456.7368 -na--na--na-454.3 454.2 N-150 N-149 454.303 -na--na--na--454.3029 454.65 N-151 N-150 456.4129 --na---na--na-455.87 455.77 N-152 N-151 460.5699 --na----na----na-460.56 460.46 N-153 N-152 463.89 --na----na----na--463.89 464.17 N-154 N-153 467.8199 --na----na---na-467.44 467.34 .·I Table B.2. Hydrograph Routing -East Basin -10-Year Storm ROUTEHYD D THRU [Existing East) USING TYPE1A AND (10 yr) NOTZERO ACTUAL Reach Area Flow FullQ % Full nDepth Size nVel Nel CBasin / Hyd ac els els ratio fl fl/s fl/s ------------ D-Dum2 19.7 4.4884 122.33 0.04 0.4719 X-Sect 3.935 ----e-001 D-Dum1 53.6 13.1058 122.33 0.11 0.81 X-Sect 5.5304 ---e-002 D-145 53.6 13.1051 121.12 0.11 0.8142 X-Sect 5.4927 ---- D-144 53.6 13.1036 117.92 0.11 0.9649 X-Sect 5.2679 ---- D-143 53.6 13.1 122.41 0.11 0.9032 X-Sect 4.856 ----- D-142 53.6 13.0953 82.3869 0.16 0.9821 X-Sect 4.3102 --- D-141 53.6 13.0948 10.3949 1.26 -1 X-Sect 1.2597 ---- P-117 65.2 14.3238 6.5804 2.18 -1 12" Diam 2.1767 8.3784 ex_east D-140 65.2 14.3181 124.5 0.12 0.6926 X-Sect 3.9913 ---- 0-139 65.2 14.3076 117.81 0.12 0.6891 X-Secl 4.3262- D-138 65.2 14.2973 94.8108 0.15 0.9065 X-Sect 4.2086 ----- D-137 67.6 14.8971 279 0.05 0.5622 X-Sect 6.5644 ---e-003 P-116 67.6 14.8875 7.2535 2.05 -1 18" Diam 2.0525 4.1046 D-136 67.6 14.8791 61.7242 0.24 0.9641 X-Sect 4.5155 --- D-135 67.6 14.86 66.6905 0.22 1.1209 X-Sect 3.6062 ---- D-134 67.6 14.8509 70.9939 0.21 0.8189 X-Sect 4.472 --- D-133A 67.6 14.8437 93.7984 0.16 0.899 X-Sect 4.4767 ----- D-133 67.6 14.8424 26.6671 0.56 1.9795 X-Sect 1.4503 - P-115 68.7 15.1643 6.9473 2.18 -1 12" Diam 2.1828 8.8456 e-004 D-132 68.7 15.1617 226.87 0.07 0.8315 X-Sect 7.0313- P-114 92.2 20.3817 18.9199 1.08 -1 24" Diam 1.0773 6.0224 e-005 0-131 92.2 20.3728 338.51 0.06 0.8183 X-Sect 6.0985 -- D-130 92.2 20.3642 33.2703 0.61 1.2093 X-Sect 5.2653 -- D-129 92.2 20.3511 8.6723 2.35 -1 X-Sect 2.3467 --- P-113 92.2 20.3415 23.5738 0.86 1.0749 18" Diam 15.0091 13.34 D-128 92.2 20.3328 266.41 0.08 0.9398 X-Sect 5.4109 ---- D-127 92.2 20.3088 1354.11 0.01 0.7502 X-Sect 2.4283 ----- D-126 92.2 20.2866 491.48 0.04 0.428 X-Sect 1.9106 --- D-125 92.2 20.1873 3470.27 0.01 · 0.4582 X-Sect 1.0267 ---- D-124 92.2 20.03 549.84 0.04 0.4223 X-Sect 0.7679- D-123 92.2 19.9985 3827.85 0.01 0.5331 X-Sect 2.3162- P-112 92.2 19.9587 4.3371 · 4.6 -1 12" Diam 4.6019 5.5221 D-122 92.2 19.9456 50.2681 0.4 1.2487 X-Sect 3.3192-- D-121 122.6 24.93 594.02 0.04 0.4161 X-Sect 13.223-e-006 P-111 122.6 24.8832 15.3148 1.62 -1 18" Diam 1.6248 8.6664 D-120 122.6 24.6416 18.2879 1.35 -1 X-Sect 1.3474 - D-119 122.6 24.5438 17.5281 1.4 -1 X-Sect 1.4002- 0-118 122.6 24.5308 . 179.94 0.14 0.6339 X-Sect 6.562- D-117 122.6 24.5144 61.1492 0.4 1.4223 X-Sect 3.6544- D-116 122.6 24.4971 27.9865 0.88 1.4271 X-Sect 5.1474 --- D-115 122.6 24.4955 78.2241 0.31 1.6574 X-Sect 5.1522 - P-110 122.6 24.4801 30.6525 0.8 1.3515 24" Diam 10.8367 9.757 D-114 122.6 24.4557 47.75 0.51 1.5399 X-Sect 5.2816 - D-113 124.4 24.6393 319.76 0.08 1.0057 X-Sect 7.2971 --e-007 D-112 124.4 24.6301 1134.16 0.02 0.742 X-Sect 7.4221 -- D-111 124.4 24.5979 413.21 0.06 1. 1252 X-Sect 4.6448 -- , :·1 D-110 124.4 24.5719 241.55 0.1 1.0455 X-Sect 4.8977 ---- Reh App Bend Junct HW Max El/ Loss Head Loss Loss Elev Rim El Fr Node To Node ft ft ft ft ft ft N-110 408.6355 N-111 N-110 409.5854 --na---na----na-409.5854 411.92 N-112 N-111 410.6952 --na----na----na--410.6952 414.13 N-113 N-112 412.3751 --na----na----na--412.3751 415.64 N-114 N-113 412.985 --na----na----na--412.985 415.67 N-115 N-114 414.5504 --na----na----na--414.18 414.08 N-116 N-115 417.346 --na----na----na-416.6 416.5 N-117 N-116 416.6529 --na---na---na-416.49 416.39 N-118 N-117 417.3199 --na---na----na-416.49 416.39 N-119 N-118 416.7623 --na----na----na--416.71 416.61 N-120 N-119 418.4399 --na----na----na--418.24 418.14 N-121 N-120 420.9399 --na----na----na--420.43 420.33 N-122 N-121 421.3322 '-na----na----na--421.3322 422.69 N-123 N-122 427.5867 -na----na---na-423.41 423.31 N-124 N-123 426.0499 --na----na----na--423.41 423.31 N-125 N-124 423.6399 --na----na----na--423.64 424.05 N-126 N-125 465.1461 --na----na----na--424.9 424.8 N-127 N-126 425.6399 --na---na---na-425.6399 426.02 N-128 N-127 426.0798 --na----na---na--426.0798 426.52 N-129 N-128 427 .6098 --na----na---na-427.6097 428.27 N-130 N-129 429.6497 --na----na---na-429.4 429.3 N-131 N-130 430.9699 -na----na----na-430.83 430.73 N-132 N-131 432.4499 --na---na--na-432.45 432.79 N-133 N-132 441.2068 --na----na---na--436.5 436.4 N-134 N-133 436.5119 --na----na----na--436.03 435.93 N-135 . N-134 437 .4999 --na----na----na-437.57 437.47 N-136 N-135 440.3899 --na----na----na-440.25 440.15 N-137 N-136 442.9103 --na----na----na--442.2 442.1 N-137A N-137 442.87 --na---na----na-441.99 441.89 N-138 N-137A 458.8658 --na---na---na-442.9 442.8 N-139 N-138 443.1294 --na---na--na-442.9 442.8 N-140 N-139 443.89 --na----na---na-443.14 443.04 N-141 N-140 444.3999 -na----na----na--444.3999 444.84 N-142 N-141 445. 7908 -na----na---na--445.7908 446.11 N-143 N-142 447.0106 --na----na---na--447.0107 447.71 N-144 N-143 451.3791 -na----na---na--448.2 448.1 N-145 N-144 448.46 --na----na---na-447 .. 84 447.74 N-146 N-145 449.6399 -na--na--na-449.6399 449.84 N-147 N-146 452.3696 -na---na--na-452.3698 452.71 N-146 N-147 453.5397 -na----na---na--453.5397 453.69 N-149 N-148 464.129 -na----na---na-454.3 454.2 N-150 N-149 454.3029 -na---na---na--454.3029 454.65 N-151 N-150 456.4126 -na---na----na-455.87 455.77 N-152 N-151 460.5699 -na--na---na-460.56 460.46 N-153 N-152 463.8899 -na---na---na-463.89 464.17 N-154 N-153 467 .8199 --na----na---na--467.44 467.34 :·I Table B.3. Hydrograph Routing -East Basin -25-Year Stonn ROUTEHYD D THRU (Existing East] USING TYPE1A AND (25 yr] NOTZERO ACTUAL Reach Area Flow FullQ % Full nDepth Size nVel Nel CBasin I Hyd ae els els ratio ft ft/s ft/s ----------- D-Dum2 19.7 5.7736 122.33 0.05 0.5347 X-Sect 4.2649 --e-001 D-Dum1 53.6 16.6641 122.33 0.14 0. 9204 X-Sect 5.9522 --e-002 D-145 53.6 16.6623 121.12 0.14 0.9253 X-Sect 5.911 ----- D-144 53.6 16.6597 117.92 0.14 1.095 X-Sect 5.6189 ·--- D-143 53.6 16.6543 122.41 0.14 . 1.0158 X-Sect 5.1748 -- D-142 53.6 16.6481 82.3869 0.2 1.1029 X-Sect 4.6242 ----· D-141 53.6 16.6444 10.3949 1.6 -1 X-Sect 1.6012 --- P-117 65.2 18.3188 6.5804 2.78 -1 12" Diam 2.7838 8.3784 ex_east D-140 65.2 18.3118 124.5 0.15 0.7894 X-Sect 4.3271 --- D-139 65.2 18.2992 117.81 0.16 0.786 X-Sect 4.6556 -- D-138 65.2 18.2868 94.8108 0.19 1.0247 X-Sect 4.5015 ·--- D-137 67.6 19.0686 279 0.07 0.6269 X-Sect 7.0354 ----e-003 P-116 67.6 19.0592 7.2535 2.63 -1 18" Diam 2.6276 4.1046 D-136 67.6 19.0493 61.7242 0.31 1.0913 X-Sect 4.8719 --- D-135 67.6 19.0273 66.6905 0.29 1.2672 X-Sect 3.86 -- D-134 67.6 19.0167 70.9939 0.27 0. 926 X-Sect 4.7959 --- D-133A 67.6 19.0082 93.7984 0.2 0.9908 X-Sect 4.8691 ••••• D-133 67.6 19.0069 26.6671 0.71 2.2289 X-Sect 1.5584 - P-115 68.7 19.4194 6.9473 2.8 -1 12" Diam 2.7952 8.8456 e-004 D-132 68.7 19.4163 226.87 0.09 0.9372 X-Sect 7.5367 -- P-114 92.2 25.943 18.9199 1.37 -1 24" Diam 1.3712 6.0224 e-005 D-131 92.2 25.9323 338.51 0.08 0.9321 X-Sect 6.5545- D-130 92.2 25.9219 33.2703 0.78 1.3721 X-Sect 5.6512 -- D-129 92.2 25.9106 8.6723 2.99 -1 X-Sect 2.9877 ··- P-113 92.2 25.8992 23.5738 1.1 -1 18" Diam 1.0986 13.34 D-128 92.2 25.8888 266.41 0.1 1.076 X-Sect 5.818 -- D-127 92.2 25.8608 1354.11 0.02 0.8003 X-Sect 2.5676 ---- D-126 92.2 25.8358 491.48 0.05 0.4713 X-Sect 2.076 --- D-125 92.2 25.7224 3470.27 0.01 0.5018 X-Sect 1.0908 ---- D-124 92.2 25.5489 549.84 0.05 0.478 X-Sect 0.836- D-123 92.2 25.5134 3827.85 0.01 0.584 X-Sect 2.4616- P-112 92.2 25.4763 4.3371 5.87 -1 12" Diam 5.8741 5.5221 D-122 92.2 25.4617 50.2681 0.51 1.3879 X-Sect 3.5601 -- D-121 122.6 32.0486 594.02 0.05 0.4735 X-Sect 14.376 --e-006 P-111 122.6 32.0049 15.3148 2.09 -1 18" Diam 2.0898 8.6664 D-120 122.6 31.7866 18.2879 1.74 -1 X-Sect 1.7381 - D-119 122.6 31.6961 17.5281 1.81 -1 X-Sect 1.8083 ---- D-118 122.6 31.6812 179.94 0.18 0. 7203 X-Sect 7.0837- D-117 122.6 31.6627 61.1492 0.52 1.5908 X-Sect 3.9591 - D-116 122.6 31.6418 27.9865 1.13 -1 X-Sect 1.1306-- D-115 122.6 31.64 78.2241 0.4 1.866 X-Sect 5.5186- P-110 122.6 31.6228 30.6525 1.03 1.7027 24" Diam 11.096 9.757 D-114 122.6 31.5955 47.75 0.66 1.7176 X-Sect 5.6991 - D-113 124.4 31.8576 319.76 0.1 1.1584 X-Sect 7.8462-e-007 D-112 124.4 31.8471 1134.16 0.03 0.8307 X-Sect 8.1092- D-111 124.4 31.8116 413.21 0.08 1 .2906 X-Sect 4.9987- D-110 124.4 31.7828 241.55 0.13 1.207 X-Sect 5.2894 ----- Reh App Bend Junct HW Max El/ Loss Head Loss .Loss Elev Rim El Fr Node To Node ft ft ft ft ft ft N-110 408.797 N-111 N-110 409.747 --na----na---na--409.747 411.92 N-112 N-111 410.8606 --na----na----na--410.8606 414.13 N-113 N-112 412.5405 -na----na----na--412.5405 415.64 N-114 N-113 413.1504 --na----na----na--413.1505 415.67 N-115 N-114 414.8065 --na----na----na--414.18 414.08 . N-116 N-115 418.962 -na----na----na--416.6 416.5 N-117 N-116 416.6529 --na----na----na--416.49 416.39 N-118 N-117 417.3199 --na----na--na--416.49 416.39 N-119 N-118 416.9307 -na----na----na--416.71 416.61 N-120 N-119 418.4399 --na----na----na--418.24 418.14 N-121 N-120 420.9399 --na----na----na--420.43 420.33 N-122 N-121 421.5229 --na----na----na--421.5229 422.69 N-123 N-122 431.8698 --na----na----na--423.41 423.31 N-124 N-123 426.0499 --na----na----na--423.41 423.31 N-125 N-124 423.64 --na----na----na--423.64 424.05 N-126 N-125 491.2671 --na----na----na-424.9 424.8 / N-127 N-126 425.6399 --na----na----na--425.6399 426.02 N-128 N-127 426.0798 -na----na---na--426.0798 426.52 N-129 N-128 427.6098 --na----na----na--427.6097 428.27 N-130 N-129 429.6497 --na---na--na--429.4 429.3 N-131 N-130 430.9699 -na----na----na-430.83 430.73 N-132 N-131 432.45 -na----na---na-432.45 432.79 N-133 N-132 437.2202 --na----na----na--436.5 436.4 N-134 N-133 436.5119 --na----na----na--436.03 435.93 N-135 N-134 437.85 --na--. --na----na--437.57 437.47 N-136 N-135 440.39 --na----na----na--440.25 440.15 N-137 N-136 444.033 --na----na----na--442.2 442.1 N-137A N-137 442.8699 --na----na----na-441.99 441.89 N-138 N-137A 469.665 --na----na----na-442.9 442.8 N-139 N-138 443.3789 -na--na---na-442.9 442.8 N-140 N-139 443.89 --na----na----na--443.14 443.04 N-141 N-140 · 444.3999 -na----na----na--444.3999 444.84 N-142 N-141 445. 9371 --na----na----na-445.9371 446.11 N-143 N-142 447.157 --na----na----na-447.157 447.71 N-144 N-143 453.928 --na----na----na--448.2 448.1 N-145 N-144 448.46 --na----na----na-447.84 447.74 N-146 N-145 449.6399 -na----na----na--449.6399 449.84 N-147 N-146 452.3699 -na----na----na-452.3699 452.71 N-148 N-147 453.5398 --na----na---na-453.5398 453.89 N-149 N-148 470.8597 -na----na---na-454.3 454.2 N-150 N-149 454.3029 -na--na---na--454.3029 454.65 N-151 N-150. 456.4129 -na----na--na-455.87 455.77 N-152 N-151 460.5699 -na----na--na--460.56 460.46 N-153 N-152 463.8981 -na----na----na--463.8981 464.17 N-154 N-153 467 .828 --na----na----na--467.44 467.34 Table B.4. Hydrograph Routing -East Basin -·so-Year Storm ROUTEHYD O THRU [Existing East) USING TYPE1A AND (50 yr) NOTZERO ACTUAL Reach Area Flow Fulf Q % Full nDepth Size nVef Nel CBasin / Hyd ac cfs cfs ratio fl fl/s fl/s ------------ D-Dum2 19.7 6.4328 122.33 0.05 0.5644 X-Sect 4.4125 -----e-001 D-Dum1 53.6 18.4875 122.33 0.15 0.9737 X-Sect 6.1401 -----e-002 D-145 53.6 18.4851 121.12 0.15 0.9789 -X-Sect 6.0973 ---- D-144 53.6 18.482 117.92 0.16 1.1561 X-Sect 5.7757 ----- D-143 53.6 18.4757 122.41 0.15 1.0682 X-Sect 5.3178 ----- D-142 53.6 18.4689 82.3869 0.22 1.16 X-Sect 4. 7688 ----- D-141 53.6 18.4652 10.3949 1.78 -1 X-Sect 1. 7764 ----- P-117 65.2 20.3744 6.5804 3.1 -1 12" Diam 3.0962 8.3784 ex_east D-140 65.2 20.3667 124.5 0.16 0.8355 X-Sect 4.4786 ---- 0-139 65.2 20.3531 117.81 0.17 0.8317 X-Sect 4. 8035 ----- D-138 65.2 20.3398 94.8108 0.21 1.0799 X-Sect 4.6329 ----- D-137 67.6 21.2149 279 0.08 0.6572 X-Sect 7 .2468 -----e-003 P-116 67.6 21.2056 7.2535 2.92 -1 18" Diam 2.9235 4.1046 D-136 67.6 21.1949 61.7242 0.34 1.152 X-Sect 5.0314 ----- D-135 67.6 21.1716 66.6905 0.32 1.3357 X-Sect 3.9737 ----- D-134 67.6 21.1602 70.9939 0.3 0.9762 X-Sect 4.9411 ----- D-133A 67.6 21.1511 93.7984 0.23 1.035 X-Sect 5.0466 ----- D-133 67.6 21.1496 26.6671 0.79 2.3487 X-Sect 1.6064 --- P-115 68.7 21.6082 6.9473 3.11 -1 12" Diam 3.1103 8.8456 e-004 D-132 68.7 21.605 226.87 0.1 0.9869 X-Sect 7.7628 ---- P-114 92.2 28.7909 18.9199 1.52 -1 24" Diam 1.5217 6.0224 e-005 D-131 92.2 28.7784 338.51 0.09 0.9857 X-Sect 6.7585 --- D-130 92.2 28.7663 33.2703 0.86 1.4508 X-Sect 5.8219 ---- D-129 92.2 28.7555 8.6723 3.32 -1 X-Sect 3.3158 ----- P-113 92.2 28.7428 23.5738 1.22 -1 18" Diam 1.2193 13.34 D-128 92.2 28.731 266.41 0.11 1. 1405 X-Sect 5.9997 ----- D-127 92.2 28.699 1354.11 0.02 0.8231 X-Sect 2.6309 ----- D-126 92.2 28.6712 491.48 0.06 0.4918 X-Sect 2.1506 ---- D-125 92.2 28.5445 3470.27 0.01 0.5218 X-Sect 1.1196 ---- D-124 92.2 28.3566 549.84 0.05 0.5043 X-Sect 0.8666 ---- D-123 92.2 28.3183 3827.85 0.01 0.6073 X-Sect 2.5267 -- P-112 92.2 28.2813 4.3371 6.52 -1 12" Diam 6.5208 5.5221 D-122 92.2 28.2656 50.2681 0.56 1.4497 X-Sect 3.6834 ---- D-121 122.6 35.6853 594.02 0.06 0.5006 X-Sect 14.8923 -----e-006 P-111 122.6 35.6419 15.3148 2.33 -1 18" Diam 2.3273 8.6664 D-120 122.6 35.4329 18.2879 1.94 -1 X-Sect 1.9375 ----- D-119 122.6 35.3437 17.5281 2.02 -1 X-Sect 2.0164 ----- D-118 122.6 35.3278 179.94 0.2 0.7605 X-Sect 7.315 ---- D-117 122.6 35.308 61.1492 0.58 1.6707 X-Sect 4.0938 --- D-116 122.6 35.2852 27.9865 1.26 -1 X-Sect 1.2608 --- D-115 122.6 35.2833 78.2241 0.45 1 . 9632 X-Sect 5.68 -- P-110 122.6 35.2651 30.6525 1.15 -1 24" Diam 1.1505 9.757 D-114 122.6 35.2359 47.75 0.74 1.8022 X-Sect 5.8823- D-113 124.4 35.5397 319.76 0.11 1.2299 X-Sect 8.0881 ---e-007 D-112 124.4 35.5284 1134.16 0.03 0.8726 X-Sect 8.4163 --- D-111 124.4 35.4908 413.21 0.09 1.3677 X-Sect 5.1548 ----- D-110 124.4 35.4602 241.55 0.15 1.2828 X-Sect 5.4622 --- Reh App Bend Junct HW Max El/ Loss Head Loss Loss Elev Rim El Fr Node To Node fl fl fl fl fl fl N-110 408.8728 N-111 N-110 409.8228 --na----na---na--409.8228 411.92 N-112 N-111 410.9377 --na----na----na--410.9377 414.13 N-113 N-112 _412.6176 --na----na---na--412.6176 415.64 N-114 N-113 413.2275 --na----na----na--413.2275 415.67 N-115 N-114 414. 9305 --na----na----na-414.18 414.08 N-116 N-115 415.8377 -na----na---na--415.8377 416.5 N-117 N-116 416.2331 --na---na----na--416.2331 416.39 N-118 N-117 417.0631 -na---na---na-416.49 416.39 N-119 N-118 417.0166 --na---na----na-416.71 416.61 N-120 N-119 418.4399 --na----na----na--418.24 418.14 N-121 N-120 420.9399 --na----na----na--420.43 420.33 N-122 N-121 421.6109 --na----na---na--421.6109 422.69 N-123 N-122 434.4431 -na----na---na--423.41 423.31 N-124 N-123 426.0499 --na----na----na--423.41 423.31 N-125 N-124 423.6399 --na----na----na--423.6399 424.05 N-126 N-125 506. 9789 -na----na---na--424.9 424.8 N-127 N-126 425.6399 --na----na---na--425.6399 426.02 N-128 N-127 426.0798 -na----na---na-426.0798. 426.52 N-129 N-128 427.6098 -na---na---na-427.6097 428.27 N-130 N-129 429.6497 --na----na---na--429.4 429.3 N-131 N-130 430.9699 -na---na---na--430.83 . 430.73 N-132 N-131 432.5004 --na---na----na-432.5004 432.79 N-133 N-132 438.2302 -na----na----na--436.5 436.4 N-134 N-133 436.5119 -na----na----na--436.03 435.93 N-135 N-134 437.85 -na----na----na--437.57 437.47 N-136 N-135 440.3899 --na----na---na--440.25 440.15 N-137 N-136 444.7122 --na---na----na--442.2 442.1 N-137A N-137 442.8699 --na----na---na--441.99 441.89 N-138 N-137A 476.2553 --na----na--na--442.9 442.8 N-139 N-138 443.4986 -na---na--na-442.9 442.8 N-140 N-139 443.8899 --na----na---na--443.14 443.04 N-141 N-140 444.3999 --na----na--na--444.3999 444.84 N-142 N-141 446.0057 -na----na~---na-446.0057 446.11 N-143 N-142 447.2256 --na----na---na--447.2256 447.71 N-144 N-143 455.4835 -na---na---na--448.2 448.1 N-145 N-144 448.46 --na----na---na--447.84 447.74 N-146 N-145 . 449.6399 -na---na--na--449.6399 449.84 N-147 N-146 452.3699 --na--na--na--452.3698 452.71 N-148 N-147 453.5398 -na---na--na--453.5398 453.89 N-149 N-148 474.9647 -na--na--na-454.3 454.2 N-150 N-149 454.3029 --na--na---na-454.3029 454.65 N-151 N-150 456.4129 --na---na---na-455.87 455.77 N-152 N-151 460.5836 -na---na-'-na-460.56 460.46 N-153 N-152 463.9726 -na----na---na-463.9726 464.17 N-154 N-153 467.9025 -na---na--na--467.44 467.34 :-1 Table B.5. Hydrograph Routing -East Basin -100-Year Stonn ROUTEHYD O THRU [Existing East] USING TYPE1A AND [100 yr] NOTZERO ACTUAL Reach Area Flow FullQ % Full nDepth Size . nVel Nel CBasin I Hyd ac cfs cts ratio ft ft/s ft/s ------------ D-Dum2 19.7 7.1007 122.33 0.06 0.5932 X-Sect 4.5504 -----e-001 D-Dum1 53.6 20.334 122.33 0.17 1.0256 X-Sect 6.3154 -----e-002 D-145 53.6 20.3311 121.12 0.17 1.0311 X-Sect 6 .2711 ----- D-144 53.6 20.3274 117.92 0,17 1.2148 X-Sect 5. 9225 -----· D-143 53.6 20.3204 122.41 0.17 1.1183 X-Sect 5.4519 ----- D-142 53.6 20.3129 82.3869 0.25 1.2157 X-Sect 4.9037 ----- D-141 53.6 20.3094 10.3949 1.95 -1 X-Sect 1 . 9538 ----- P-117 65.2 22.46 6.5804 3.41 -1 12· Diam 3.4132 8.3784 ex_east D-140 65.2 22.4518 124.5 0.18 0.8802 X-Sect 4.6208 --- D-139 65.2 22.4372 117.81 0.19 0.8757 X-Sect 4.9419 ----- D-138 65.2 22.4229 94.8108 0.24 1.1329 X-Sect 4. 756 ----- D-137 67.6 23.3927 279 0.08 0.6862 X-Sect 7. 4448 -----e-003 P-116 67.6 23.3835 7.2535 3.22 -1 18" Diam 3.2238 4.1046 D-136 67.6 23.3721 61.7242 0.38 1.2109 X-Sect 5 .1805 ----- D-135 67.6 23.3475 66.6905 0.35 1.4016 X-Sect 4.08 ----- D-134 67.6 23.3353 70.9939 0.33 1.0244 X-Sect 5.0771 ----- D-133A 67.6 23.3254 93.7984 0.25 1.0782 X-Sect 5.2133 ----- D-133 67.6 23.3239 26.6671 0.87 2.4653 X-Sect 1.6511 ---- P-115 68.7 23.829 6.9473 3.43 -1 12" Diam 3.43 8.8456 e-004 D-132 68.7 23.8256 226.87 0.11 1.0347 X-Sect 7. 97 43 ----- P-114 92.2 31.6894 18.9199 1.67 -1 24" Diam 1.6749 6.0224 e-005 D-131 92.2 31.6761 338.51 0.09 1.0378 X-Sect 6.9502 ----- D-130 92.2 31.6628 33.2703 0.95 1.5281 X-Sect 5.9813 --- D-129 92.2 31.6529 8.6723 3.65 -1 X-Sect 3.6499 ----- P-113 92.2 31.6395 23.5738 1.34 -1 18" Diam 1.3421 13.34 D-128 92.2 31.627 266.41 0.12 1 .2034 X-Sect 6.1704 ----- D-127 92.2 31.5932 1354.11 0.02 0.8449 X-Sect 2.6909 ----- D-126 92.2 31.5642 . 491.48 0.06 0.5117 X-Sect 2 .2214 ----- D-125 92.2 31.4314 3470.27 0.01 0.541 X-Sect 1.1469 ---- D-124 92.2 31.2367 549.84 0.06 0.5301 X-Sect 0.8959 ----- D-123 92.2 31.1967 3827.85 0.01 0.6298 X-Sect 2.5886 ~--- P-112 92.2 31.1607 4.3371 7.18 -1 12" Diam 7.1847 5.5221 D-122 92.2 31.1444 50.2681 0.62 1.5106 X-Sect 3.8005 ---- D-121 122.6 39.4139 594.02 0.07 0.527 X-Sect 15.3819 -----e-006 P-111 122.6 39.3717 15.3148 2.57 -118"Diam 2.5708 8.6664 D-120 122.6 39.1738 18.2879 · 2.14 -1 X-Sect 2.1421 -,--- D-119 122.6 39.0873 17.5281 2.23 -1 X-Sect 2.23 ----- D-118 122.6 39.0705 179.94 0.22 0. 7996 X-Sect 7.5336 ----- D-117 122.6 39.0498 61.1492 0.64 1.7492 X-Sect 4.2208- D-116 122.6 38.9434 27.9865 1.39 -1 X-Sect 1.3915 --- D-115 122.6 38.9414 78.2241 0.5 2.0557 X-Sect 5.829-- P-110 122.6 38.9219 30.6525 1.27 -1 24" Diam 1.2698 9.757 D-114 122.6 38.8904 47.75 0.81 1.8838 X-Sect 6.0508 --- D-113 124.4 39.2371 319.76 0.12 1 .298 X-Sect 8.3113 ---e-007 D-112 124.4 39.225 1134.16 0.03 0.9129 X-Sect 8.7019- D-111 124.4 39.1846 413.21 0.09 1.4411 X-Sect 5.2991 ----- D-110 124.4 39.1518 241.55 0.16 1.3552 X-Sect 5.6219 ---- Reh App Bend Junct HW Max El/ Loss Head Loss Loss Elev Rim El Fr Node To Node fl fl fl fl fl fl N-110 408.9452 N-111 N-110 409.8951 --na----na----na--409.8951 411.92 N-112 N-111 411.0111 --na----na----na--411.0111 414.13 N-113 N-112 412.691 --na----na----na--412.691 415.64 N-114 N-113 413.3009 --na----na----na--413.3009 415.67 N-115 N-114 415.03 --na----na----na--414.18 414.08 N-116 N-115 416.0292 -na----na----na--416.0292 416.5 N-117 N-116 416.3256 --na--na----na-416.3256 416.39 N-118 N-117 417.1555 --na----na----na--416.49 416.39 N-119 N-118 417.1629 --na---na----na--416.71 416.61 N-120 N-119 418.4399 --na----na----na--418.24 418.14 N-121 N-120 420.9399 -na----na----na--420.43 420.33 N-122 N-121 421.696 --na----na----na--421.696 422.69 N-123 N-122 437.3544 --na----na---na--423.41 423.31 N-124 N-123 426.0499 --na----na----na--423.41 423.31 N-125 N-124 423.6805 --na----na----na--423.6805 424.05 N-126 N-125 524.8533 --na----na----na--424.9 424.8 N-127 N-126 425.6399 -na----na---na--425.6399 426.02 N-128 N-127 426.0798 -na---na--na--426.0798 426.52 N-129 N-128 427.6098 -na---na---na-427.6097 428.27 N-130 N-129 429.6497 --na---na----na--429.4 429.3 N-131 N-130 430.9699 --na----na---na-430.83 430.73 N-132 N-131 432.5633 --na----na----na--432.5633 432.79 N-133 N-132 439. 36 71 --na----na----na--436.5 436.4 N-134 N-133 436.5119 --na----na----na--436.03 435.93 N-135 N-134 437.85 -na----na----na--437.57 437.47 N-136 N-135 440.3899 -na----na----na-440.25 440.15 N-137 N-136 445.4762 -na--· --na----na--442.2 442.1 N-137A N-137 442.8699 --na----na----na--441.99 441.89 N-138 N-137A 483.6605 -na----na---na--442.9 442.8 N-139 N-138 443.6152 --na----na---na--442.9 442.8 N-140 N-139 443.8899 --na----na----na--443.14 443.04 N-141 N-140 444.4243 --na----na----na--444.4243 444.84 N-142 N-141 446.0716 --na----na--na--446.0716 446.11 N-143 N-142 447.2915 -na--na--na--447.2915 447.71 N-144 N-143 457.2313 --na----na----na--448.2 448.1 N-145 N-144 448.4599 -na--na--~na--447.84 447.74 N-146 N-145 449.6399 --na----na---na--449.6399 449.84 N-147 N-146 452.3698 -na---na---na--452.3698 452:71 N-148 N-147 . 453.5398 -na--na--na--453.5398 453.89 N-149 N-146 479.5756 -na----na--na--454.3 454.2 N-150 N-149 454.3031 -na-. -na--na-454.3031 454.65 N-151 N-150 456.413 -na----na----na-455.87 455.77 N-152 N-151 460.6461 -na---na---na-460.56 460.46 N-153 N-152 464.0445 --na---na---na--464.0445 464.17 N-154 N-153 467 .9954 -na----na--na-467.44 467.34 .. ; Table 8.6. Hydrograph Routing -East Basin -Summary Table 2-Year 10-Year 25-Year 50-Year 100-Year Freeboard Freeboard Freeboard Freeboard Freeboard Reach ID From Node To Node (FT) (FT) (FT) (FT) (FT) N-110 D-110 N-111 N-110 2.68 2.33 2.17 2.10 2.02 D-111 N-112 N-111 4.16 3.43 3.27 3.19 3.12 D-112 N-113 N-112 3.98 3.26 3.10 3.02 2.95 D-113 N-114 N-113 3.14 2.69 2.52 2.44 2.37 D-114 N-115 N-114 Overtop Overtop Overtop Overtop Overtop P-110 N-116 N-115 1.00 Overtop Overtop 0.66 0.47 D-115 N-117 N-116 0.83 Overtop Overtop 0.16 0.06 D-116 N-118 N-117 0.00 Overtop Overtop Overtop Overtop D-117 N-119 N-118 Overtop Overtop Overtop Overtop Overtop D-118 N-120 N-119 Overtop Overtop Overtop Overtop Overtop D-119 N-121 N-120 Overtop Overtop Overtop Overtop Overtop D-120 N-122 N-121 1.17 1.36 1.17 1.08 0.99 P-111 N-123 N-122 0.32 Overtop Overtop Overtop Overtop D-121 N-124 N-123 Overtop Overtop Overtop Overtop Overtop D-122 N-125 N-124 0.41 0.41 0.41 0.41 0.37 P-112 N-126 N-125 Overtop Overtop Overtop Overtop Overtop D-123 N-127 N-126 0.38 0.38 0.38 0.38 0.38 D-124 N-128 N-127 0.44 0.44 0.44 0.44 0.44 D-125 N-129 N-128 0.66 0.66 0.66 0.66 0.66 D-126 N-130 N-129 Overtop Overtop Overtop Overtop Overtop D-127 N-131 N-130 Overtop Overtop Overtop Overtop Overtop D-128 N-132 N-131 0.34 0.34 0.34 0.29 0.23 P-113 N-133 N-132 Overtop Overtop Overtop Overtop Overtop D-129 N-134 N-133 Overtop Overtop Overtop Overtop Overtop D-130 N-135 N-134 Overtop Overtop Overtop Overtop Overtop D-131 N-136 N-135 Overtop Overtop Overtop Overtop Overtop P-114 N-137 N-136 0.68 Overtop Overtop Overtop Overtop D-132 N-137A N-137 Overtop Overtop Overtop Overtop Overtop P-115 N-138 N-137A Overtop Overtop Overtop Overtop . Overtop D-133 N-139 N-138 Overtop Overtop Overtop Overtop Overtop D-133A N-140 N-139 Overtop Overtop Overtop Overtop Overtop D-134 N-141 N-140 0.44 0.44 0.44 0.44 0.42 D-135 N-142 N-141 0.44 0.32 0.17 0.10 0.04 D-136 N-143 N-142 0.82 0.70 0.55 0.48 0.42 P-116 N-144 N-143 Overtop Overtop Overtop Overtop Overtop D-137 N-145 N-144 Overtop Overtop Overtop Overtop Overtop D-138 N-146 N-145 0.20 0.20 0.20 0.20 0.20 D-139 N-147 N-146 0.34 0.34 0.34 0.34 0.34 D-140 N-148 N-147 0.35 0.35 0.35 0.35 0.35 P-117 N-149 N-148 Overtop Overtop Overtop Overtop Overtop D-141 N-150 N-149 0.35 0.35 0.35 0.35 0.35 D-142 N-151 N-150 Overtop Overtop Overtop Overtop Overtop D-143 N-152 N-151 Overtop Overtop Overtop Overtop Overtop D-144 N-153 N-152 0.28 0.28 0.27 · 0.20 0.13 D-145 N-154 N-153 Overtop Overtop Overtop Overtop Overtop Table B.7. Hydrograph Routing -West Basin -2-Year Stonn ROUTEHYD U THRU (Existing West] USING TYPE1A AND (2 yr] NOTZERO ACTUAL Reach Area Flow FullQ % Full nDepth Size nVel Nel CBasin / Hyd ac cfs cfs ratio fl tus tus ------------ D-021 2.9 0.5767 215.99 0 0.3321 X-Sect 3.0535 -----w-001 D-020 2.9 0.5766 75.0242 0.01 0.3244 X-Sect 2.7143 -0 --- P-016 19.2 2.8102 10.5228 0.27 0.3529 12" Diam 11.3425 13.398 w-002 D-019 19.2 2.8096 212.76 0.01 0.6667 X-Sect 4.1816 ----- D-018 21.1 3.0333 251.93 0.01 0.2382 X-Sect 5.8108 ----ex_west P-015 21.1 3.0325 7.7298 0.39 0.4351 12" Diam 9.2462 9.8418 D-017 21.1 3.0318 138.18 0.02 0.3561 X-Sect 3.5277 ---- D-016 21.1 3.0316 452.04 0.01 0.254 X-Sect 5.0894 ----- P-014 22.3 3.2439 7.9881 0.41 0.4436 12" Diam 9.6423 10.1708 w-003 D-015 22.3 3.2432 160.64 0.02 0.451 X-Sect 3.7541 ----- D-014 22.3 3.2429 200 0.02 0.6317 X-Sect 4.3238 ----- P-013 22.3 3.2423 10.6228 0.31 0.3791 12" Diam 11.8787 13.5253 D-012 22.3 3.2413 290.67 0.01 0.6234 X-Sect 4.8101 ----- D-011 22.3 3.2403 320.43 0.01 0.3609 X-Sect 4.0339 ----- D-010 25.5 3.7564 1040.88 0 0.5771 X-Sect 6.1421 -----w-004 P-012 25.5 3.7551 7.0631 0.53 0.5186 12"' Diam 9.1309 8.9931 P-011 25.5 3.7536 6.9402 0.54 0.5239 12" Diam 9.0097 8.8365 P-010 25.5 3.7521 8.217 0.46 0.4742 12· Diam 10.2249 10.4623 P-009 25.5 3.7507 7.6431 0.49 0.4945 12" Diam 9.6859 9.7315 P-008A 27.7 4.1444 4.8684 0.85 0.709 12" Diam 6.9597 6.1986 w-005 P-008 31.5 4.8063 6.8722 0.7 0.6161 12" Djam 9.4657 8.75 w-006 P-007 31.5 4.8057 6.4104 0.75 0.6459 12" Diam 8.9569 8.162 P-006 31.5 4.8039 7.4569 0.64 0.5839 12" Diam 10.0875 9.4945 P-005 39.3 · 6.248 9.9629 0.63 0.574 12" Diam 13.3954 12.6852 w-007 P-004 39.3 6.2406 7.7824 0.8 0.6778 12" Diam 11.0133 9.9088 D-009 39.3 6.2233 93.993 0.07 0.6278 X-Sect 2.79 --- D-008 39.3 6.2231 112.96 0.06 0.414 X-Sect 6.2056 --- P-003 39.3 6.2205 6.2952 0.99 0.8091 12" Diam 9.1373 8.0153 D-007 39.3 6.2079 107.57 0.06 0.5256 X-Sect 3.8357 ----- D-006 39.3 6.2077 964.56 0.01 0.3936 X-Sect 8.1166 ---- P-002 39.3 6.204 6.1462 1.01 0.8284 12" Diam 8.9179 7.8256 D-005 39.3 6.2035 --0 0.915 X-Sect 2.1497 ----- D-004 39.3 6.1864 44.3354 0.14 0.5256 X-Sect 4.8288 ----- D-003 39.3 6.1853 313.41 0.02 0.5341 X-Sect 4.3358 --- D-002 39.3 6.1799 770.99 0.01 0.6454 X-Sect 1.5651 --- D-001 39.3 6.1797 146.32 0.04 0.4209 X-Sect 7.1705 --- P-001 48.3 6.7994 8.2043 0.83 0.6946 12" Diam 11.6778 10.4461 w-008 Reh App Bend Junct HW Max El/ Loss Head Loss Loss Elev Rim El From Nod To Node ft ft ft ft ft ft N-001 373.6321 N-002 N-001 382.2466 -na---na----na-380.5 380.4 N-003 N-002 381.0999 --na---na--na--380.43 380.33 N-004 N-003 382.8899 --na---na--na-382.3 382.2 N-005 N-004 389.8769 --na----na--na-389.8769 390.25 , :·• N-006 N-005 398.3768 --na----na----na--398.3768 398.68 N-007 N-006 397. 7699 --na----na----na--397.7699 398.68 N-008 N-007 400.6486 --na----na----na--399.4 399.3 N-010 N-008 400,3799 --na----na----na--399.4 399.3 N-011 N-010 400.4899 --na----na----na--400.32 400.22 N-012 N-011 403.3211 -na----na----na--401.7 401.6 N-014 N-012 401.9299 --na----na----na--401.9 401.8 N-015 N-014 402.4099 --na----na----na--402.4099 402.6 N-016 N-015 406.8691 0.9827 0. 0089 ------405.8952 406.01 N-017 N-016 407.6445 0.5809 0.0075 ------406.41 406.31 N-018 N-017 408.2272 0.5814 0.0023 ------407.6481 408.14 · N-019 N-018 411 . 1 539 ------411.1539 413.72 N-019A N-019 419.722 0.4324 0.0032 ------419.2928 420.68 N-020 N-019A 420 .102 ------42Q.102 422.5 N-021 N-020 428.8048 0.3544 0.0039 ------428.4543 429.85 N-022 N-021 431.8735 1.2605 0.0049 ------430.6179 434 N-023 N-022 435.9002 0.355 0.0013 °-----435.5465 436.59 N-024 N-023 437 .2402 --na----na----na--437.2402 438.2 N-025 N-024 437.6302 --na----na---na-437.6302 438.9 N-026 N-025 440.4301 --na----na----na--440.4301 441.52 N-028 N-026 444.3401 --na----na----na--444.3401 444.82 N-029 N-028 445.7641 --na----na----na--445.764 446.2 N-031 N-029 445.934 --na----na---na--445.934 446.47 N-032 N-031 447.8239 -na----na----na--447.8239 449.01 N-033 N-032 448.994 --na---na----na-448.994 450.1 N-035 N-033 449.4039 --na----na----na--449.4039 451.24 N-036 N-035 451.6238 --na----na"" --na-451.6238 452.98 N-037 N-036 452.5651 --na----na----na--452.5651 453.8 N-039 N-037 453.065 -na----na----na-453.065 454.27 N-040 N-039 455.835 --na----na----na--455.835 457.02 N-041 N-040 458.6864 -na----na---na-458.6864 459.3 N-043 N-041 458.8464 --na----na----na--458.8463 459.71 N-044 N-043 466.1862 --na----na----na--466.1862 467.86 Table B.8. Hydrograph Routing -West Basin -10-Year Stonn ROUTEHYD [] THRU [Existing West) USING TYPE1A AND [10 yr] NOTZERO ACTUAL Reach Area Flow FullQ % Full nDepth Size nVel Nel CBasin I Hyd ac cfs cfs ratio ft ft/s ft/s ------------ D-021 2.9 1.1262 215.99 0.01 0.4269 X-Sect 3.6099 -----w-001 D-020 2.9 1.126 75.0242 0.02 0.417 X-Sect 3.2085 ----- P-016 19.2 5.7252 10.5228 0.54 0.5258 12" Diam 13.6802 13.398 w-002 D-019 19.2 5.7243 212.76 0.03 0.8706 X-Sect 4.9958 ----- D-018 21.1 6.2369 25.1.93 0.02 0.3597 X-Sect 7 .2932 -----.ex_west P-015 21.1 6.2355 7.7298 0.81 0.6807 12" Diam 10.9508 9.8418 D-017 21.1 6.2346 138.18 0.05 0.5336 X-Sect 4.3923 ---- D-016 21.1 6.2343 452.04 0.01 0.3664 X-Sect 6.4244 ---- P-014 22.3 6.6546 7.9881 0.83 0.6973 12" Diam 11.3797 10.1708 w-003 D-015 22.3 6.6534 160.64 0.!)4 0.6285 X-Sect 4.6707 ----- D-014 22.3 6.653 200 0.03 0.827 X-Sect 5.1746 ----- P-013 22.3 6.652 10.6228 0.63 0.5735 12" Diam 14.2771 13.5253 D-012 22.3 6.6504 290.67 0.02 0.8162 X-Sect 5.757 ----- D-011 22.3 6.6488 320.43 0.02 0.516 X-Sect 5.0632 ----- D-010 25.5 7.6794 1040.88 0.01 0.7546 X-Sect 7.3444 -----w-004 P-012 25.5 7.6772 7.0631 1.09 -1 12" Diam 1.0869 8.9931 P-011 25.5 7.6747 6.9402 1.11 -1 12" Diam 1.1058 8.8365 P-010 25.5 7.6721 8.217 0.93 0.7657 12" Diam 11.8884 10.4623 . P-009 25.5 7.6702 7.6431 1 0.8229 12" Diam 11.0927 9.7315 P-008A 27.7 8.4447 4.8684 1.73 -1 12" Diam 1.7346 6.1986 w-005 P-008 31.5 9.6483 6.8722 1.4 -1 12" Diam 1.404 8.75 w-006 P-007 . 31.5 9.6459 6.4104 1.5 -1 12" Diam 1.5047 8.162 P-006 31.5 9.6425 7.4569 1.29 -1 12" Diam 1.2931 9.4945 P-005 39.3 12.2397 9.9629 1.23 -1 12" Diam 1.2285 12.6852 w-007 P-004 39.3 12.2337 7.7824 1.57 -1 12" Diam 1.572 9.9088 D-009 39.3 12.2305 93.993 0.13 0.867 X-Sect 3.43 ---- D-008 39.3 12.2302 112.96 0.11 0.5807 X-Sect 7.6019 ----- P-003 39.3 12.2269 6.2952 1.94 -1 12" Diam 1.9423 8.0153 D-007 39.3 12.2225 107.57 0.11 0.7439 X-Sect 4.7079 ----- D-006 39.3 12.2223 964.56 0.01 0.5074 X-Sect 9.6143 ----- P-002 39.3 12.2172 6.1462 1.99 -1 12" Diam 1.9878 7.8256 D-005 39.3 12.2169 --0 0.915 X-Sect 4.2335 ---- D-004 39.3 12.207 44.3354 0.28 0.7349 X-Sect 5.8637 --- D-003 39.3 12.1945 313.41 0.04 0.7226 X-Sect 5.3815 --- D-002 39.3 12.1624 770.99 0.02 0. 7234 X-Sect 1.7335 -- D-001 · 39.3 12.1621 146.32 0.08 0.5527 X-Sect 8.9201 --- P-001 48.3 13.7386 8.2043 1.67 -1 12" Diam 1.6746 10.4461 w-008 Reh App Bend Junct HW Max El/ Loss Head Loss Loss Elev Rim El From Nod To Node ft ft ft ft ft ft N-001 373.66 N-002 N-001 397.4953 -na--na--na--380.5 380.4 N-003 N-002 381.0999 -na----na----na--380.43 380.33 N-004 N-003 382.8899 --na--na---na-382.3 382.2 N-005 N-004 390. 363 -na---na--na-390.35 390.25 , ., N-006 N-005 398.8499 --na-- N-007 N-006 398.1499 --na-- N-008 N-007 406. 7091 --na-- N-010 N-008 400.3799 --na-- N-011 N-010 400.4899 --na-- N-012 N-011 402.893 --na-- N-014 N-012 401.9299 --na-- N-015 N-014 402.4099 --na-- N-016 N-015 414.9783 3.7712 N-017 N-016 412.823 2.3405 N-018 N-017 412.9798 2.3422 N-019 N-018 421.5153 ------ N-019A N-019 428.7839 1.7952 N-020 N-019A 424.1394 ------ N-021 N-020 431.693 1.4817 N-022 N-021 431.8735 1.4827 N-023 N-022 438.0848 1.4837 N-024 N-023 440.4391 --na-- N-025 N-024 438.69 --na-- N-026 N-025 441.4899 --na-- N-028 N-026 445.3998 --na-- N-029 N-028 447.9408 --na-- N-031 N-029 446.4 7 --na-- N-032 N-031 448.3599 --na-- N-033 N-032 · 451.1722 -na-- N-035 N-033 450.6099 --na-- N-036 N-035 452.8299 --na-- N-037 N-036 454.9681 --na-- N-039 N-037 454.3999 --na-- N-040 N-039 457.14 --na-- N-041 N-040 460.2915 --na-- N-043 N-041 459.5599 --na-- N-044 N-043 466.8998 --na-- --na----na-- --na----na-- --na----na-- --na----na-- --na----na-- --na----na-- --na----na-- --na----na-- 0.0341 ------ . 0.0303 ------ 0. 0092 ------ 0.0134 ------ 0.0162 ------ 0. 005 7 ------ 0.0053 ------ --na----na-- --na----na-- --na----na-- --na----na-- --na----na-- --na----na-- --na----na-- --na----na-- --na---na-- --na---na- --na----na-- --na----na-- --na----na-- --na----na-- --na----na-- --na----ila-- 398.78 398.1499 399.4 399.4 400.32 401.7 401.9 402.4099 406.11 406.41 408.24 413.82 420.78 422.6 429.95 430.3965 436.69 438.3 438.69 441.4899 444.92 446.3 446.47 448.3599 450.2 450.6099 452.8299 453.9 454.37 457.12 459.4 459.5599 466.8998 398.68 398.68 399.3 399.3 400.22 401.6 401.8 402.6 406.01 406.31 408.14 413.72 420.68 422.5 429.85 434 436.59 438.2 438.9 441.52 444.82 446.2 446.47 449.01 450.1 451.24 452.98 453.8 454.27 457.02 459.3 459.71 467.86 , ., Table B.9. Hydrograph Routing -West Basin -25-Year Storm ROUTEHYD a THRU (Existing West] USING TYPE1A AND (25 yr] NOTZERO ACTUAL Reach Area Flow Full Q %Full nDepth Size nVel Nel CBasin / Hyd ac cfs cfs ratio ft ft/s ftls ------------ D-021 2.9 1.4193 215.99 0.01 0.4655 X-Sect 3.8249 -----w-001 D-020 2.9 1.419 75.0242 0.02 0.4548 X-Sect 3.3995 ----- P-016 19.2 7.2941 10.5228 0.69 0.6125 12" Diam 14.4658 13.398 w-002 D-019 19._2 7.2903 212.76 0.03 0. 9533 X-Sect 5.3071 ----- D-018 21.1 7.9622 251.93 0.03 0.4124 X-Sect 7.8517 -----ex_west P-015 21.1 7.9606 7.7298 1.03 0.8494 12" Diam 11.1952 9.8418 D-017 21.1 7.9596 138.18 0.06 0.6103 X-Sect 4.7161 ----- D-016 21.1 7.9593 452.04 0.02 0.4154 X-Sect 6.9302 --- P-014 22.3 8.4903 7.9881 1.06 0.8943 12" Diam 11.4571 10.1708 w-003 D-015 22.3 8.4889 160.64 0.05 0.7052 X-Sect 5.0142 ----- D-014 22.3 8.4884 200 0.04 0.9062 X-Sect 5.4996 ----- P-013 22.3 8.4872 10.6228 0.8 0.676 12" Diam 15.0227 13.5253 D-012 22.3 8.4854 290.67 0.03 0. 8943 X-Sect 6.1186 ----- D-011 22.3 8.4835 320.43 0.03 0.5836 X-Sect 5.4511 ----- D-010 25.5 9.7892 1040.88 0.01 0.8265 X-Sect 7 .8039 -----w-004 P-012 25.5 9.7867 7.0631 1.39 -1 12" Diam 1.3856 8.9931 P-011 25.5 9.7842 6.9402 1.41 . -1 12" Diam 1.4098 8.8365 P-010 25.5 9.7811 8.217 1.19 -1 12" Diam 1.1903 10.4623 P-009 25.5 9.7791 7.6431 1.28 -1 12" Diam 1.2795 9.7315 P-008A 27.7 10.7564 4.8684 2.21 -1 12" Diam 2.2095 6.1986 w-005 P-008 31.5 12.2532 6.8722 1.78 -1 12" Diam 1.783 8.75 w-006 P-007 31.5 12.2295 6.4104 1.91 -1 12" Diam 1.9077 8.162 P-006 31.5 12.214 7.4569 1.64 -1 12" Diam 1.6379 9.4945 P-005 39.3 15.4537 9.9629 1.55 -1 12" Diam 1.5511 12.6852 w-007 P-004 39.3 15.439 7.7824 1.98 -1 12" Diam 1.9838 9.9088 D-009 39.3 15.4332 93.993 0.16 0.9703 X-Sect 3.6728 ---- D-008 39.3 15.4329 112.96 0.14 0.6524 X-Sect 8.1307 ----- P-003 39.3 15.4277 6.2952 2.45 -1 12" Diam 2.4507 8.0153 D-007 39.3 15.4211 107.57 0.14 0.8378 X-Sect 5.0372 ----- D-006 39.3 15.4209 964.56 0.02 0.5537 X-Sect 10.1896 ----- P-002 39.3 15.4136 6.1462 2.51 -1 12" Diam 2.5078 7.8256 D-005 39.3 15.4133 ---0 0.915 X-Sect 5.3412 ---- D-004 39.3 15.3973 44.3354 0.35 0.8232 X-Sect 6 .2522 ----- D-003 39.3 15.3784 313.41 0.05 0.8043 X-Sect 5.7771 - D-002 39.3 15.3305 770.99 0.02 0.749 X-Sect 1.8482 ----- D-001 39.3 15.3302 146.32 0.1 0.61 X-Sect 9.5841 ----- P-001 48.3 17.4789 8.2043 2.13 -1 12" Diam 2.1304 10.4461 w-008 Reh App Bend Junct HW Max El/ Loss Head Loss Loss Elev· Rim El From Nod To Node fl fl fl fl fl fl N-001 373.66 N-002 N-001 412.2399 -na--na--na--380.5 380.4 N-003 N-002 381.1 --na---na----na--380.43 380.33 N-004 N-003 382.8899 --na--na--na-382.3 382.2 N-005 N-004 390.6017 --na----na----na--390.35 390.25 N-006 N-005 398.85 --na----na----na--398.78 398.68 N-007 N-006 398.1499 --na----na----na--398.1499 398.68 N-008 N-007 411 . 7735 -na----na----na--399.4 399.3 N-010 N-008 400.3799 --na----na----na--399.4 399.3 N-011 N-010 400.4899 --na----na----na--400.32 400.22 N-012 N-011 404.2625 --na--0 -na----na--401.7 401.6 N-014 N-012 401. 9299 --na----na----na--401.9 401.8 N-015 N-014 402.4099 --na----na----na--402.4099 402.6 N-016 N-015 422.4271 6.0118 Q. 0544 ------406.11 406.01 N-017 N-016 416.8114 3.7554 0.0486 ------406.41 406.31 N-018 N-017 416.9514 3.7649 0.0148 ------408.24 408.14 N-019 N-018 429.5789 -----413.82 413.72 N-019A N-019 437.9548 2.9125 0.0218 ------420.78 420.68 N-020 N-019A 426.2303 -----422.6 422.5 N-021 N-020 436.8487 2.4083 0. 0264 ------429.95 429.85 N-022 N-021 438.8036 2.4098 0. 0093 ------434.1 434 N-023 N-022 442.3643 2.4111 0.0087 ---~--436.69 436.59 N-024 N-023 442. 7826 --na----na----na--438.3 438.2 N-025 N-024 438.69 -na----na----na--438.69 438.9 N-026 N-025 441.4899 --na----na----na--441.4899 441.52 N-028 N-026 445.3998 --na----na----na--444.92 444.82 N-029 N-028 449. 7335 --na----na----na--446.3 446.2 N-031 N-029 446.47 --na---na-----na--446.47 446.47 N-032 N-031 448.3599 --na----na----na--448.3599 449.01 N-033 N-032 452.966 -na----na---na--450.2 450.1 N-035 N-033 450.6099 -na----na----na--450.6099 451.24 N-036 N-035 452.8299 --na----na---na--452.8299 452.98 N-037 N-036 456.3148 -na---na----na-453.9 453.8 N-039 N-037 454.3999 --na----na----na-454.37 454.27 N-040 N-039 457.1399 --na----na---na--457.12 457.02 N-041 N-040 461.6094 --na----na----na--459.4 459.3 N-043 N-041 459.5599 --na----na---na-459.5599 459.71 N-044 N-043 466.8998 --na----na----na--466.8998 467.86 ' .. Table 8.10. Hydrograph Routing -West Basin -50-Year Storm ROUTEHYD [] THRU [Existing West] USING TYPE1A AND [50 yr] NOTZERO ACTUAL Reach Area Flow FullQ % Full nDepth Size nVel Nel CBasin I Hyd ac cfs cfs ratio fl fl/s fl/s ------------ D-021 2.9 1.5685 215.99 0.01 0.4833 X-Sect 3.9215 -----w-001 D-020 2.9 1.5683 75.0242 0.02 0.4722 X-Sect 3.4853 ----- P-016 19.2 8.0999 10.5228 0.77 0.6581 12" Diam 14.7787 13.398 w-002 D-019 19.2 8.0896 212.76 0.04 0.9912 X-Sect 5.4469 ----- D-018 21.1 8.8435 251.93 0.04 0.4372 X-Sect 8.1008 ----ex_west P-015 21.1 8.8417 7.7298 1.14 -1 12" Diam 1.1439 9.8418 D-017 21.1 8.8407 138.18 0.06 . 0.6463 X-Sect 4.8603 ---- D-016 21.1 8.8404 452.04 0.02 0.4384 X-Sect 7.156 --- P-014 22.3 9.434 7.9881 1.18 -1 12" Diam 1.181 10.1708 w-003 D-015 22.3 9.4262 160.64 0.06 0.7412 X-Sect 5.1673 ----- D-014 22.3 9.4257 200 0.05 0.9425 X-Sect 5.6454 ---- P-013 22.3 9.4245 10.6228 0.89 0.7329 12" Diam 15.2781 13.5253 D-012 22.3 9.4224 290.67 0.03 0.9301 X-Sect 6.2809 ----- D-011 22.3 9.4204 320.43 0.03 0.6154 X-Sect 5.6241 ----- D-010 25.5 10.8663 1040.88 0.01 0.8595 X-Sect 8.0101 -----w-004 P-012 25.5 10.8659 7.0631 1.54 -1 12" Diam 1.5384 8.9931 P-011 25.5 10.8622 6.9402 1.57 -1 12" Diam 1.5651 8.8365 P-010 25.5 10.8581 8.217 1.32 -1 12" Diam 1.3214 10.4623 P-009 25.5 10.8544 7.6431 1.42 -1 12· Diam 1.4201 9.7315 P-008A 27.7 11.9326 4.8684 2.45 -1 12" Diam 2.4511 6.1986 w-005 P-008 31.5 13.5621 6.8722 1.97 -1 12" Diam 1.9735 8.75 w-006 P-007 31.5 13.5297 6.4104 2.11 -1 12" Diam 2.1106 8.162 . P-006 31.5 13.5123 7.4569 1.81 -1 12• Diam 1.8121 9.4945 P-005 39.3 17.0801 9.9629 1.71 -1 12" Diam 1.7144 12.6852 w-007 P-004 39.3 17.0634 7.7824 2.19 -1 12" Diam 2.1926 9.9088 D-009 39.3 17.0568 93.993 0.18 1.0185 X-Sect 3.7809 ---- D-008 39.3 17.0564 112.96 0:15 0.6858 X-Sect 8.366 ---- P-003 39.3 17.0509 6.2952 2.71 -1 12" Diam 2.7086 8.0153 D-007 39.3 17.0435 107.57 0.16 0.8816 X-Sect 5.1838 ----- D-006 39.3 17.0432 964.56 0.02 0.5748 X-Sect 10.4477 --- P-002 39.3 17.0355 6.1462 2.77 -1 12" Diam 2.7717 7.8256 D-005 39.3 17.0353 ---0 0.915 X-Sect 5.9032 ---- D-004 39.3 17.0172 44.3354 0.38 0.8642 X-Sect 6.4254 ----- D-003 39.3 16.9961 313.41 0.05 0.8428 X-Sect 5.9539 --- D-002 39.3 16.9427 770.99 0.02 0.7591 X-Sect 1.9232 ---- D-001 39.3 16.9424 146.32 0.12 0.6369 X-Sect 9.8817 --- P-001 48.3 19.3916 8.2043 2.36 -1 12" Diam 2.3636 10.4461 w-008 Reh App Bend Junct HW Max El/ Loss Head Loss Loss Elev Rim El From Nod To Node fl fl fl fl fl fl N-001 373.66 N-002 N-001 421.1453 -na--na--na-380.5 380.4 N-003 N-002 381.1 -na---na---na-380.43 380.33 N-004 N-003 382.8899 -na----na--na-382.3 382.2 N-005 N-004 390.6621 --na----na---na-390.35 390.25 .·1 N-006 N-005 398.8499 --na----na----na--398.78 398.68 N-007 N-006 398.1499 -na----na----na--398.1499 398.68 N-008 N-007 414.7916 --na----na----na--399.4 399.3 N-010 N-008 400.3799 --na----na----na--399.4 399.3 N-011 N-010 400.5191 --na----na----na--400.32 . 400.22 N-012 N-011 405.0781 --na----na----na--401.7 401.6 N-014 N-012 401.9299 --na----na----na--401.9 401.8 N-015 N-014 402.4099 --na----na----na--402.4099 402.6 N-016 N-015 426.8611 7.3437 0.0665 ------406.11 406.01 N-017 N-016 419.1824 4.5962 0.0595 ------406.41 406.31 N-018 N-017 419.3115 4.6079 0.0181 ------408.24 408.14 N-019 N-018 434.3575 ------413.82 413.72 N-019A N-019 443.3864 3.5843 0.0268 -----420.78 420.68 N-020 N-019A 427 .4875 ------422.6 422.5 N-021 N-020 440.1545 2.9679 0.0325 -----429.95 429.85 N-022 N-021 440.8607 2.9701 0.0115 ------434.1 434 N-023 N-022 444.2857 2.9721 0.0107 ------436.69 436.59 N-024 N-023 444.2004 --na----na----na--438.3 438.2 N-025 N-024 438.6899 --na--· --na----na--438.6899 438.9 N-026 N-025 441.4899 -na----na----na--441.4899 441.52 N-028 N-026 445.3998 --na----na----na--444.92 444.82 N-029 N-028 450.8166 --na----na----na--446.3 446.2 N-031 N-029 446.4 7 -na----na----na--446.47 446.47 N-032 N-031 448.3599 -na----na----na--448.3599 449.01 N-033 N-032 453.324 -na----na--na-450.2 450.1 N-035 N-033 450.6099 --na----na--na-450.6099 451.24 N-036 N-035 452.8299 -na----na---na-452.8299 452.98 N-037 N-036 457.129 --na----na---na-453.9 453.8 N-039 N-037 454.3999 --na----na---na--454.37 454.27 N-040 N-039 457 .1399 --na----na--. --na--457.12 457.02 N-041 N-040 462.4097 --na----na----na--459.4 459.3 N-043 N-041 459.5599 --na----na----na--459.5599 459.71 N-044 N-043 466.8998 --na----na----na--466.8998 467.86 Table B.11. Hydrograph Routing -West Basin -100-Year Storm ROUTEHYD O THRU [Existing West] USING TYPE1A AND [100 yr] NOTZERO ACTUAL Reach Area Flow Full Q % Full nDepth Size nVel Nel CBasin / Hyd ac cfs cfs ratio ft 11/s 11/s ------------ D-021 2.9 1.7191 215.99 0.01 0.5002 X-Sect 4.0124 -----w-001 D-020 2.9 1.7188 75.0242 0.02 0.4887 X-Sect 3.5662 ---·· P-016 19.2 8.9147 10.5228 0.85 0.7064 12" Diam 15.0315 13.398 w-002 D-019 19.2 8.8982 212.76 0.04 1.0272 X-Sect 5.5783 ----- D-018 21.1 9.7341 251.93 0.04 0.4611 X-Sect 8.3334 ·-·-· ex_west P-015 21.1 9.7323 7.7298 1.26 -1 12" Diam 1.2591 9.8418 D-017 21.1 9.7313 138.18 0.07 0.6809 X-Sect 4.9949 ---- D-016 21.1 9.7309 452.04 0.02 0.4605 X-Sect 7.3672 --·- P-014 22.3 10.3918 7.9881 1.3 -1 12" Diam 1.3009 10.1708 w-003 D-015 22.3 10.3745 160.64 0.06 0.7757 X-Sect 5.3102 ---- D-014 22.3 10.3736 200 0.05 0.977 X-Sect 5. 7823 ----- P-013 22.3 10.3718 10.6228 0.98 0.7991 12" Diam 15.4151 13.5253 D-012 22.3 10.3694 290.67 0.04 0.9642 X-Sect 6.4331 ----- D-011 22.3 10.3672 320.43 0.03 0.6459 X-Sect 5.7856 ---- D-010 25.5 11.9547 1040.88 0.01 0.8908 X-Sect 8.2036 --··· w-004 P-012 25.5 11.9546 7.0631 1.69 -1 12" Diam 1.6925 8.9931 P-011 25.5 11.9518 6.9402 1.72 -1 12" Diam 1.7221 8.8365 P-010 25.5 11.9391 8.217. 1.45 -1 12" Diam 1.453 10.4623 P-009 25.5 11.8!194 7.6431 1.56 -1 12" Diam 1.5569 9.7315 P-008A 27.7 13.0768 4.8684 2.69 -1 12" Diam 2.6861 6.1986 w-005 P-008 31.5 14.8216 6.8722 2.16 -1 12" Diam 2.1567 8.75 w-006 P-007 31.5 14.7641 6.4104 2.3 -1 12" Diam 2.3031 8.162 P-006 31.5 14.7397 7.4569 1.98 -112"Diam 1.9766 9.4945 P-005 39.3 18.6376 9.9629 1.87 -1 12" Diam 1.8707 12.6852 w-007 P-004 39.3 18.6131 7.7824 2.39 -1 12" Diam 2.3917 9.9088 D-009 39.3 18.6037 93.993 0.2 1.0612 X-Sect 3.8828 ---- D-008 39.3 18.6034 112.96 0.16 0.7161 X-Sect 8.5744 ---· P-003 39.3 18.5959 6.2952 2.95 -1 12" Diam 2.954 8.0153 D-007 39.3 18.5866 107.57 0.17 0.9214 X-Sect 5.3133 ----- D-006 39.3 18.5863 964.56 0.02 0.5938 X-Sect 10.6766 ----- P-002 39.3 18.5762 6.1462 3.02 -1 12" Diam 3.0224 7.8256 D-005 39.3 18.576 ---· 0 0.915 X-Sect 6.4371 ----- D-004 39.3 18.5514 44.3354 0.42 0.9012 X-Sect 6.5778 --- D-003 39.3 18.5234 313.41 0.06 0.877 4 X-Sect 6.1089 ----- D-002 39.3 18.4536 770.99 0.02 0. 7682 X-Sect 1.9897 ---· D-001 39.3 18.4532 146.32 0.13 0.6611 X-Sect 10.141 ----- P-001 48.3 21.1994 8.2043 2.58 -1 12" Diam 2.5839 10.4461 w-008 Reh App Bend Junct HW Max El/ Loss Head Loss Loss Elev Rim El From Nod To Node ft ft ft ft ft ft N-001 373.66 N-002 N-001 430.4121 --na-.,..na---na-380.5 380.4 N-003 N-002 381. 0999 --na----na---na--380.43 380.33 N-004 N-003 382.8899 --na---na---na-382.3 382.2 N~005 N-004 390.6975 -na----na---na--390.35 390.25 :·1 N-006 N-005 398.8499 --na----na----na--398.78 398.68 N--! "l7 N-006 398.1499 --na----na----na--398.1499 398.68 N-008 N-007 417.9379 --na----na----na--399.4 399.3 N-010 N-008 400.3799 --na----na----na--399.4 399.3 N-011 N-010 400.5711 --na----na----na--. 400.32 400.22 N-012 N-011 405.9302 --na----na----na--401.7 401.6 N-014 N-012 401.9299 --na----na----na--401.9 401.8 N-015 N-014 402.4099 --na----na----na--402.4099 402.6 N-016 N-015 431.5039 8.7441 0.0791 •••••• 406.11 406.01 N-017 N-016 421.6752 5.469 0.0707 •••••• 406.41 406.31 N-018 N-017 421.7617 5.4872 0.0216 •••••• 408.24 408.14 N-019 N-018 439.3409 •••••• 413.82 413.72 N-019A N-019 449.133 4.3046 0.0322 •••••• 420.78 420.68 N-020 N-019A 428.8355 •••••• 422.6 422.5 N-021 N-020 443.6975 3.5882 0.0393 •••••• 429.95 429.85 N-022 N-021 443.1411 3.5959 0.0139 •••••• 434.1 434 N-023 N-022 446.4317 3.5976 0.0129 ····-436.69 436.59 N-024 N-023 445.7808 --na----na----na--438.3 438.2 N-025 N-024 438.6899 --na----na----na--438.6899 438.9 N-026 N-025 441.4899 --na----na----na--441.4899 441.52 N-028 N-026 445.3998 --nae. --na----na--444.92 444.82 N-029 N-028 452.0266 --na----na-; -na--446.3 446.2 N-031 N-029 446.47 --na----na----na--446.47 446.47 N-032 N-031 448.3599 --na---na---na--448.3599 449.01 N-033 N-032 454.3832 --na----na----na--450.2 450.1 N-035 N-033 450.6099 -na----na---na--450.6099 451.24 N-036 N-035 452.8299 --na----na----na--452.8299 452.98 N-037 N-036 458.0387 --na---na----na--453.9 453.8 N-039 N-037 454.3999 --na---na----na--454.37 454.27 N-040 N-039 457 .1399 --na----na----na--457.12 457.02 N-041 N-040 463.3042 --na----na----na--459.4 459.3 N-043 N-04) 459.5599 --na----na----na--459.5599 459.71 N-044 N-043 466.8998 --na----na----na--466.8998 467.86 ., ., . . Table B.12. Hydrograph Routing -West Basin -Summary Table 2-Year 10-Year 25-Year SO-Year 100-Year Freeboard Freeboard Freeboard Freeboard Freeboard Reach ID From Node To Node ft ft ft ft ft N-001 P-001 N-002 N-001 Overtop Overtop Overtop Overtop Overtop D-001 N-003 N-002 Overtop Overtop Overtop Overtop Overtop D-002 N-004 N-003 Overtop Overtop Overtop Overtop Overtop D-003 N-005 N-004 0.37 Overtop Overtop Overtop Overtop D-004 N-006 N-005 0.30 Overtop Overtop Overtop Overtop D-005 N-007 N-006 0.91 0.53 0.53 0.53 0.53 P-002 N-008 N-007 Overtop Overtop Overtop Overtop Overtop D-006 N-010 N-008 Overtop Overtop Overtop Overtop Overtop D-007 N-011 N-010 Overtop Overtop Overtop Overtop Overtop P-003 N-012 N-011 Overtop Overtop Overtop Overtop Overtop D-008 N-014 N-012 Overtop Overtop Overtop Overtop Overtop D-009 N-015 N-014 0.19 0.19 0.19 0.19 0.19 P-004 N-016 N-015 0.11 Overtop Overtop Overtop Overtop P-005 N-017 N-016 Overtop Overtop Overtop Overtop Overtop P-006 N-018 N-017 0.49 Overtop Overtop Overtop Overtop P-007 N-019 N-018 2.57 Overtop Overtop Overtop Overtop P-008 N-019A N-019 1.39 Overtop Overtop Overtop Overtop P-008A N-020 N-019A 2.40 Overtop Overtop Overtop Overtop P-009 N-021 N-020 1.40 Overtop Overtop Overtop Overtop P-010 N-022 N-021 3.38 3.60 Overtop Overtop Overtop P-011 N-023 N-022 1.04 Overtop Overtop Overtop Overtop P-012 N-024 N-023 0.96 Overtop Overtop Overtop Overtop D-010 N-025 N-024 1.27 0.21 0.21 0.21 0.21 D-011 N-026 N-025 1.09 0.03 0.03 0.03 0.03 D-012 N-028 N-026 0.48 Overtop Overtop Overtop Overtop P-013 N-029 N-028 0.44 Overtop Overtop Overtop Overtop D-014 N-031 N-029 0.54 0.00 0.00 0.00 0.00 D-015 N-032 N-031 1.19 0.65 0.65 0.65 0.65 P-014 N-033 N-032 1.11 Overtop Overtop Overtop Overtop D-016 N-035 N-033 1.84 0.63 0.63 0.63 0.63 D-017 N-036 N-035 1.36 0.15 0.15 0.15 0.15 P-015 N-037 N-036 1.23 Overtop Overtop Overtop Overtop D-018 N-039 N-037 1.20 Overtop Overtop Overtop Overtop D-019 N-040 N-039 1.19 Overtop Overtop Overtop Overtop P-016 N-041 N-040 0.61 Overtop Overtop Overtop Overtop D-020 N-043 N-041 0.86 0.15 0.15 0.15 0.15 D-021 N-044 N-043 1.67 0.96 0.96 0.96 0.96 ® King County Road Services Division Department ofTransportation 201 South Jackson Street Seattle, WA 98104-3856 • .J, TYPE OF CERTIFICATE ~ORIGINAL 0 CONDITIONAL May 24, 2001 · Certificate # 01305 File Number: 01-05-14-02 Exoires: Mav 24. 2002 CERTIFICATE OF TRANSPORTATION CONCURRENCY D Specific conditions are described on the reverse side of this certificate. Pursuant to King County Code, Chapter 14.70 as amended, this certificate confirms that the level of service standard used in the Transportation Concu,rrency Management program has been satisfied and sufficient road capacity is reserved for the development project described below. IMPORTANT: This certificate does not guarantee a development permit. Other transportation improvements and mitigation will be required to comply with Intersection Standards, Mitigation Payment System, King County road standards, and/or safety needs. I. Applicant Name and Address: Centurion Development Services 22617 8th Drive S.E., Bothel, WA 98021 2. Property Location: a. Property Address: 13606 158th Ave. SE b. Development Name: Evendell c. Parcel Number: 1423059009 3. Type of Development Permit To Be Requested: Formal Plat 4. Proposed Land Use: Single Family Residential 5. Zone Location and Reserved Units: a. Concurrency Zone: 452 Community Planning Area: Newcastle i. Commercial Project -Total Square Feet: 0 ii. Multi-family -Number of Units: 0 iii. Single family -Number of Units: 75 6. This Certificate is subject to.the following general conditions: a. This Certificate of Conctirrency runs with the land and is transferable only to subsequent owners of the same property for the stated development, subject to the terms, conditions and expiration date,J,i.sted herein. This Certificate of Concurrency is not transferable to any other property and has no commerci~~e'.118:::',1 . ,~.,., This Certificate Expires: May 24, 2002 unless you apply for the development permit described above, prior to that date. If this requir~tO 7011}/~t__the King County Department of Transportation reserves the option to cancel your certificate and capacity refef-llit{ion. ' LANo • -•. When you apply for a development permit with King County's Department of Development and Envir~n!Jt!"W,i;yJf~ (ODES), bring this Certificate of Transportation Concurrency as parl or the development application package. 11'rry'out,S have any questions, please call (206) 263-4722. Linda Dougherty, Acting Manager, Road Services Department of Transportation King County, Washington Purpose of Checklist: King County Executive Ron Sims ENVIRONMENTAL CHECKLIST The State Environmental Policy Ad (SEPA), Chapter 43.21 RCW, requires all governmental agencies to consider the environmental impacts of a proposal before making decisions. An environmental impact statement (EIS) must be prepared for all proposals with probable significant adverse impacts on the quality of the environment. The purpose of this checklist is to provide information to help you and the agency identify impacts from your proposal (and to reduce or avoid impacts from the proposal, if it can be done) and to help the agency decide whether an EIS is required. Instructions for Applications: This environmental checklist asks you to describe some basic information about your proposal. Governmental agencies use this checklist to determine whether the environmental impacts of your proposal are significant, requiring preparation of an EIS. Answer the questions briefly, with the most precise information known, or give the best description you can. You must answer each question accurately and carefully, to the best of your knowledge. In most cases, you should be able to answer the questions from your own observations or project plans without the need to hire experts. If you really do not know the answer or if a question does not apply to your proposal, write "do not know" or "does not apply." Complete answers to the questions now may avoid unnecessary delays later. Some questions ask about governmental regulations, such as zoning, shoreline, and landmark designations. Answer these questions if you can. If you have problems, the governmental agencies can assist you. The checklist questions apply to all parts of your proposal, even if you plan to do them over a period of time or on different parcels of land. Attach any additional information that will help describe your proposal. or its environmental effects. The agency to which you submit this checklist may ask you to explain your answers or provide additional information reasonably related to determining if there may be significant adverse impact. Use of checl<list for nonproject proposals: Complete this checklist for nonproject proposals, even though questions may .be answered "does not apply." In ADDITION, complete the SUPPLEMENTAL SHEET FOR NONPROJECT ACTIONS {part D.). For nonproject actions, the references in the checklist to the words "project," "applicant," and "property or site" should be read as "proposal," "proposer," and "affected geographic area," respectively. F~lE COPY -1- [Ch.197-11'RCWp.40] i\l m, vJU I~ I i LAND USE SERVICES $EPA RULES TO BE COMPLETED BY APPLICANT A. BACKGROUND 1. Name of proposed project, if applicable: EVENOELL 2. Name of applicant: U.S. Land D2velopment Associates 3. Address and phone number of applicant and contact person: 4. C/0 CENTURION DEVELOPMENT SERVICES 22617-8™ DR. SE. BOTHEU., WA 98021 (425) 486-2563 ATTN: Michael J. Romano Date checklist prepared: May 22, 2001 5. Agency requesting checklist: KING COUNTY 6. Proposed timing or schedule (induding phasing, if applicable): Land development is planned to occur in Spring/Summer 2003. Building construction will occur fall of 2003 through 2005. 7. Do you have any plans for Mure additions, expansions, or further activity related to or connected with this proposal? If yes, explain. NO. 8. List any environmental infonnation you know about that has been prepared, or will be prepared, directly related to this proposal. Wettand reconnaissance, traffic studies, drainage studies, soil studies. 9. Do you know whether applications are pending for government approvals of other proposals directly affecting the property covered by your proposal? If yes, explain. Zona reclassificatio request concurrent with plat submittal. 10. List any government approvals or pem,its that will be needed for your proposal, if known. Preliminary Plat Approval, rezone approval, Engineering Approval, NPOES, Forest Practices, Final Plat Approval. -2- [Ch.1 97-11 RCW-p.40] (1983 Laws) SEPA RULES TO BE COMPLETED BY APPLICANT 11. Give a brief, complete description of your proposal, including the proposed uses and the size of the project and site. There are several questions later in this checklist that ask you to describe certain aspects of your proposal. You do not need to repeat those answers on this page. E~I is a proposed 75 lot single family detached plat. The subject property is zORed R-4 and contains an area of approximately 13 acres. The site is located in the lento., Highlands area of King County in the Newcastle planning. 12. Location of the proposal Give sufficient information for a person to understand the precise location of our proposed project, including a street address, if any, and section, township, and range, if known. If a proposal would occur over a range of area, provide the range or boundaries of the site(s). Provide a legal description, site plan, vicinity map, and topographic map, if reasonably available. While you should submit any plans required by the agency, you are not required to duplicate maps or detailed plans submitted with any permit applications related to this dlec!<list. The subject site is located in the SE '/. of Section 14, Township 23 North, Range 5 East, W.M., King County, Washington south of SE 136"' Street bat.een 156"' Ave. SE and 160"' Ave. SE. TO BE COMPLETED BY APPLICANT B. ENVIRONMENTAL ELEMENTS 1. Earth a. General description of the site (circle one): Flat, rolling, hilly, steep slopes, mountainous, other. Rolling b. What is the steepest slope on the site {approximate percent slope)? 10% c. What general types of soils are found on the site (for example, clay, sand, gravel, peat, muck)? If you know the classification as agricultural soils, specify them and note any prime farmland. Site soils consist of Aldet wood series (AgB). -3- [Ch.197-1 1 RCW-p.40] (1983 Laws) SEPA RULES TO BE COMPLETED BY APPLICANT d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, desaibe. NO. e. Describe the purpose, type, and approximate quantities of any filling or grading proposed. Indicate source of fill. Approximately 15,000 CY cut- to-fill with onsite soils. It is anticipated that the site earthwon( quantities will ba!ance. f. Could erosion occur as a result dearing, construction, or use? If so. generally describe. There will be the potential for erosion due to construction of the proj2ct. This potential will be mitigated through implementatio.1 of an erosion control/water management plan using Best Management Practices. g. About what percent of the site will be covered wi1h impervious surfaces after project construction (for example, asphalt or buildings)? 50 -60%. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any. Use of Best Rl!anagement Practices including: temporary swales mth sumps and check-dams, mulching, seeding, visqueen sheeting, sediment traps and ponds, silt fence. Stonn water detention and treatment facilities will be designed and constructed in accordance with the King County Drainage Manual and Depa1b,talt of Ecology standards. A Washington State Department of Ecology NPOES permit will. be required and will specify the method of storm water control, treatment and monitoring during construction. 2. Air a. What types of emissions to the air would result from the proposal (i.e., dust, automobile, odors, industrial wood smoke) during construction and when the project is completed? If any, generally describe and give approximate quantities, if known. Dust and combustion engine exhaust during construction. Automobile exhaust and wood smoke from fir<eptaces after home buitding. b. Are there any off-site sources of emissions or odors that may affect your proposal? If so, generally desaibe. Unknown c. Proposed measures to reduce or control emissions or other impacts to air, if any: Modem construction machinery will be employed in the performance of the wont. Watering will be used to control dust during construction. Wood stoves, if used, will be of modem make and will im!et cunent regutatory standards -4- [Ch.197-11 RCW-p.40] (1983 Laws) SEPA RULES TO BE COMPLETED BY APPLICANT 3. Water a. Surface: 1. Is there any surface water body on or in the immediate vicinity of the site (induding year-round and seasonal streams, saltwater, lakes, ponds, wetlands)? If yes, describe type and provide names. If appropfiate, state what stream or river it flows into. There is one ~ate d wetiand on the site. 2. Will the project require any work over, in, or adjacent to (within 200 feet) the described waters? If yes, please describe and attach available plans. Yes. Homes, roads and utilities will be constructed within 40' of the wetland edge. 3. Estimate in the amou11t of fill and dredge material that would be placed in or removed from surface water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material. None. 4. Will the proposal require surface water withdrawals or diversions? Give general description, purpose, and approximate quantities., if known. No. · 5. Does the proposal lie within a 100-year floodplain? If so, note location on the site plan. ll!o. 6. Does the proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge. Pollutants associated with typical urban resi detltial de<, elopments may ewntually make their way to swface wales. b. Ground: 1. Will ground water be withdrawn, or will water be discharged to ground. water? Give general description, purpose, and approximate quantities, if known. ll!o ground water will be withdiawn. Storm water discharged from the onsite -5- [Ch.197-11 RCW-p.40) (1983 Laws) SEPA RULES TO BE COMPLETED BY APPLICANT daention/water quality facility may eventually recharge ground water. 2. Desaibe was1e material that will be discharged into the ground from septic tanks or other sources, if any, (for example: Domestic sewage; industrial, containing the following of the system, the number of such systems, the number of houses to be served (if applicable), or the number of animals or humans the system(s) are expected to serve. Pollutants in storm water discharges from onsire treatment facilmes typical for residential ~elopme,,ts may eventually reach ground water. c. Water Runoff (including storm water): 1. Describe the source of runoff (including storm water) and method of collection and disposal, if any (including quantities, if known). Where will this water f1ow? Will this water flow into other waters? If so, describe. Storm water run-«J from roofs, yards, driveways and st, ets will be directed by street gutters and yard drainage systems to catch basins and underground storm pipes. Run-off cotlected by the undevground storm waler pipes will be conyeyq!d to an onsire delention pond and water quality treatment facility. Storm flows will be discharged at the natural points of the discharge. 2. Could waste materials enter ground or surface waters? If so, generally describe: Typical pollutants associated with · urban l"ll!Sidential ~ could eventually reach surface or ground w I rs. d. Proposed measures to reduce or control surface, ground, and runoff water impacts, if any: A storm waler system will be constructed to col6ect, convey and treat nMHlff geneialed from the sile. The storm water detention and treat»,.ent facilities will be designed and constructed in accordance with the King County Drainage Manual and Depa,b,&ent of Ecology standards. -6- [Ch.197-11 RCW-p.40] (1983 Laws) SEPA RULIES TO BE COMPLETED BY APPLICANT 4. Plants a. Check or circle types of vegetation found on the site: X X X X X X deciduous tree: alder, maple. aspen, other: fruit trees, cottonwood, .. evergreen tree: fir, cedar, pine, other: shrubs grass pasture crop or grain wet soil plants: cattail, buttercup, bullrush, skunk cabbage, other water plants: water lily, eelgrass, milfoil, other other types of vegetation (landscaping) b. What kind and amount of vegetation will be removed or altered? Land clearing typically associated with urban residential davelopment activity will occur on the site including areas of typical We stem Washington recent ~ forest and pasture. This will include tree cutting, stump and undergrowth grubbing and removal and stripping of sod. Except for vegetatio,, locatied within the wetland, wetland buffer and associated buffer rep4ac:ement averaging area all vegetation on the site will be removed in order to allow site grading and construction of roads, utilities, recreation and stonnwater detention facilities. c. List threatened or endangered species known to be on or near the site. Unknown. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any: Yards will be landscapi!d using typical Pacific Northwest plantings. 5. Animals a. Circle any birds and animals which have been observed on or near the site or are known to be on or near the site: birds: hawks, heron, eagle, songbirds. other -woodpeckers. mammals: 1e er bear, elk, beaver, other. . rodents, coyotes, raccoons fish: bass, salmon, trout, herring, shellfish, other. -7- [Ch.197-11 RCW-p:40) (1983 Laws) SEPA RULES TO BE COMPLETED BY APPLICANT b. C. d. List any threatened or endangered species known to be on or near the site. Unkm>wn. Is the site part of a migration route? If so. explain. Unknown. Proposed measures to preserve or enhance wildlife, if any. Retained native veg,etatio.1 within the sensitive areas tract associ• d with the wed.ind and buffer will continue to provided habitat for various mammals, amphibians and birds. Yard landscaping will provide habitat opportunities for birds and tree loving mammals. Typical landscaping is likely to inciude combinations of lawn, landscape plants, shrubs and trees that thrive in the maritime environment of v. e stem Washington and various annual and perennial flowers. Typical shrubs might include rtiodod2nduoo, azalea, Japanese maple, bo,iwood, junipe,-, pyramidalis etc. Trees might include dogwood, magnolia, cedar, blue spruce, c~. p4um and ash. In addition, street trees are required which will also provide habitat opportunities. 6. Energy and Natural Resources a. What kinds of energy (electric, natural gas, oil, wood stove, solar will be used to meet the completed project's energy needs? Describe whether it will be used for heating, manufacturing, etc. Electric and natural gas service will provide the primary sources of energy. Wood stoves and solar may~ used as SIIPf*!mental energy sources. b. Would the project affect the potential use of solar energy by adjacent properties? If so, generally describe. Land clearing may improve solar access by adjoining propenies. c. What kinds of enefQY conservation features are included in the plans of this proposal? List other proposed measures to reduce or control energy impacts, if any: McdevTI home construction methods and materials will ~ enipfoyed to ~ enefQY. -8- [Ch.1 97-11 RCW-p.40] (1983 Laws) SEPA RULES TO BE COMPLETED BY APPLICANT 7. Environmental Health a. Are there any environmental health hazards, induding exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste, that could occur as a result of this proposal? If so, describe. No. 1) Describe special emergency services that might be required. Not aPf*(:ab!e. 2) Proposed measures to reduce or control environmental health hazards, if any: Not applicable. b. Noise 1. What types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other)? Traffic on adjacent stiee«s, barking dogs, Ell/IV sirens, other noises typical to an urban residential environment. 2. What types and levels of noise would be created by or associated with the project on a short-leml or a long-leml basis (for example: traffic, construction, operation, other)? Indicate what hours noise would come from the site. During land devek>pment there will be heavy equipment engine noise and noises associated with equipment maintenance. During home building there will be delivery truck traffic, nail guns and saws. After build-out there will be traffic noise on the internal sti ets and other noises typical to an urban residential environment, Construction noise will be limiled to the hours of 7:00 AM to 10:00 PR/I Monday through Friday and 7:00 AM to 7:00 PM on Saturdays. 3. Proposed measures to reduce or control noise impacts, if any: Construc:tioo equipment will be fitted with modem exhaust muffling devices and will be maintained in good wort(ing order. 8. Land and Shoreline Use a. What is the a.irrent use of the site and adjacent properties. Residential and pasture. -9- [Ch.197-11 RCW-p.40] (1983 Laws) SEPA RULES TO BE COMPLETED BY APPLICANT b. Has the site been used for agriculture? If so, describe. Unknown c. Describe any structures on the sites. One large home and se11eral outbuildings. d. Will any structures be demolished? If so, what? All of the outbuildings will be d2molished. The eKisting home will likely remain. e. What is the current zoning classification of the site? R-4 f. What is the current comprehensive plan designation for the site? Urban ResidentiaU4-12 Units per Acre. g. If applicable, what is the current shoreline master program designation of the site? Not applicable. h. Has any part of the site been classified as an "environmentally sensitive" area? If so. specify. Yes. A wetland has been idei,li6ed. The wetland measures approximatlely 17,162 square feet and meets the criteria for a Class 2 wetland according to King County sensitiw area codes. 1. Approximately how many people would reside or work in the completed Project. Approximately 206 people. J. Approximately how many people would the completed project displace? NC>fl2. k. Proposed measures to avoid or reduce displacement impacts, if any. NA. I. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any. The proposal complies with current comprehensive p&ans and is in charader with future de·. el oprnent proximale to the si8Je. · -10- [Ch.1 97-11 RCW-p.40] (1983 Laws) SEPA RULES TO BE COMPLETED BY APPLICANT 9. Housing . a. Approximately how many units would be provided. if any? Indicate whether high, middle, or low-income building. 75 units of middle income housing. b. Approximately how many units, if any, would be eliminated? Indicate whether high, middle, or low-income housing. None. c. Proposed measures to reduce or control housing impacts, if any: When compEted the project will provide 74 new single family detached middle income homes. 10. Aesthetics a. What is the tallest height of any proposed structure(s), not including antennas; what is the principal exterior building material(s) proposed? 35 feet. Wood, brick, stucco. b. What views in the immediate vicinity would be altered or obstructed? Views over or inward to the project site will be altered from forest and pasture to modem, vrell designed homes and landscaped yards. c. Proposed measures to reduce or control aesthetic impacts, if any. The project pi<lp(Jses 74 new, modem, welldesigned homes and landscaped yards 11. Light and Glare a. What type of light or glare will the proposal produce? What time of day would it mainly occur? Automobite headlights and stJ etlights at night. b. Could light or glare from the finished project be a safety hazard or interfere with views? Glare from streetlights may inleffere with the view of 112art>y residents of the night sky. Automobile headlights may cause temporary discomfort for oncoming drivers. -11- [Ch.1 97-11 RCW-p.40) (1983 Laws) SEPA RULES TO BE COMPLETED BY APPLICANT c. What existing off-site source of light or glare may affect your proposal? Automobi6e headlights and street lights from adjacent stieets. d. Proposed measures to reduce or control light and glare impacts, if any. Street lighting in conformance with Puget Sound Energy (PSE} standards wlll be provided. Typically this would include stiedlights at the coi ,1:erS of the loo;, road and other locations as deemed appropriae to provide a Sillfe nighttime driving and walking environment. Typical streetlights would consist of a 150-watt flat lens luminaire located atop a 25' light standard. Streetlights will be designed to minimize g!are. 12. Recreation a. What designated and informal recreational opportunities are in the immediate vicinity? Undeveloped King County park land lies approllimately 2000' ~ of the site. Maplewood Park is about 1 mi6e southwest of the site. Maplewood Heights park is .4 mi6es southeast of the site. b. Would the proposed project displace any existing recreational uses? If so, describe. No . . c. Proposed measures to reduce or control impacts on recreation, induding recreation opportunities to be provided by the project or applicant, if any. A minimum of 29,250 square feet of active and passive recreation space will be provided in conjunction with the project including a tot lot, large play apparatus and sport court. 13. Historic and Cultural Prese<vation a. Are there any places or objects listed on, or proposed for, national, state, or local preservation registers known to be on or next to the site? If so, generally describe. No with regard to the subject sile. Unknown with regard to adjoining propemes. b. Generally describe any landmarks or evidence of historic, archaeological, scientific, or cultural importance known to be on or next to the site. None known.· c. Proposed measures to reduce or control impacts, if any. Not applicabk!. -12- [Ch.1 97-11 RCW-p.40] (1983 Laws) SEPA RULES TO BE COMPLETED BY APPLICANT 14. Transportation a. Identify public streets and highways serving the site, and describe proposed access to the existing street system. Show on site plans, if any. The site is bounded on the north by SE 136th St, on the east by 154th Ave. SE and on the west by 156"' Ave. SE. Project access for the 75 lot R~ ZOil 1s111g alliematM! is pTOf>U sed via SE 136"' St. from a single project emry/egl e ss point. Project access for the 44 lot R-4 current zoning alternative is proposed from 160"' Ave. SE from a single access point. b. Is site currently served by public transit? If not, what is the approximate distance to the nearest transit stop? King County/Metro provides transit sen,ice in the vicinity of the site. Routes 111 and 114 provide . service along SE 128"' Street, SE 144"' Street and 144"' Avenue SE. Th2 ~.est bus stop to the proposed project is located on the _southeast comer of 156"' Ave. SEJSE. 128"' Street. c. How many parking spaces. would the completed project have? How many would the project eliminate? Approximately 300 off-street spaces would be provided for the single family homes utilizing driveways and garages. No spaces would be eliminated. · d. Will the proposal require any new roads or streets, or improvements to the existing roads or streets, not induding driveways? If so, generally describe (indicate whether public or private). Yes. Public interior plat roads will be required to provide neighbomood traffic circulation and ace s to the proposed residential units. Upgraded access to the site and frontage improvemetits may be required. e. Will the project use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. No. f. How many vehicular trips per day would be generated by the completed project? If known, indicate when peak volumes would occur. According to the traffic report ~ for this project approximately 708 new trips per day would be gene1ated. Peak volumes would occur during the AM and PWJ commu8es with approximately 55 AM peak hour trips and 75 PM peak how trips. g. Proposed measures to reduce or control transportation impacts, if any. hdeai« plat roads II e eti11g King County Road Standards will be consaructed to provide inilel ior circu,ation. County Mitigation Payment System Fees (MPS) will be paid for each lot to mitigate . offsite impacts to the regional County road infrastructure. Transit service to the site may reduce overall traffic impacts. -13- [Ch.1 97-11 RCW-p.40] (1983 Laws) 'I SEPA RULES TO BE COMPLETED BY APPLICANT 15. Public Services a. Would the project result in an increased need for public services (for example: fire protection, police protection, health care, schools, other)? If so generally describe. Yes. Population growth in the immedime vicinity due to the ~s2d project will require additional fire, police and ernev s,e,,cy health p. • ,ection. It is li6iely that some of the new homes will contain families with sct.ool 2gc children resulting in increased demand for edticanoo sevvices. b. Proposed measures to reduce or control direct impacts on public services, if any. Mitigatio'1 fees, if required, will 11:e paid on each individual unit. Pomons of the property t2lces paid by the home/lot owners will be wgeted to the various public service providers. 1 6. Utilities a. Cirde utilities currently available at the site; elecbK.ity 1 natural gas, water, refuse service, telephone, sanitary sewer, septic system, other. Cable TV. b. Describe the utilities that are proposed for the project, the utility providing the service, and the general construction activities on the site or in the immediate vicinity which might be needed. Elecbicity and Natural Gas will be provided by P.,r Sound Energy: Catlle TV service will be provided by AT&T Broll# Id: T I efiOite setllice will be provided by Qwest. Se er set vice will be prD'li • 111 Ii by the City of Re.mi. C. SIGNATURE Eldension cf a 10" i1" 1i 2 I Ir Of' 12" ct· I r _. trunk main will be required along SE 136"' Sa ; I In a IIT m, a se r pump I 1;,;,,,· · will be required in the SE comer to the pn>perty. Waler service will be provided by King County Waler Dist».ct '90. Colw.ectio11s to the various service mains will be made at the proiect frontage on SE 136th St. andlOI" 161f' Ave. SE. Undenpound service wifl be construcled in conjunction witt'I road and storm drainage construction actwiliees. The above answers are true and com to the best of knowledge. I understand that the ~,,iR6 on them to make its decision. ' Date Submitted: &.:. /) /tl 6hz. -13- [Ch.197-1 1 RCW-p.40] (1983 Laws) ® King County Department of Developmeni and Environmental Services 900 Oakesdale Avenue SW Renton, WA 98055-1219 STATE OF WASHINGTON } } ss COUNTY OF KING ) File Number: ------------- Application Name: _-<=.R:...:t-1::...'t?N=...::.::O:..:t=7=t."'------------------ Project Location: ~. ~ !>c. /,3(. ~ £ z. .it.7W§n! /St> t,. A<,!{ ;£ ff/ L'" le AVe. s~. · The undersigned, being first duly sworn on oath deposes and says: 1. That the affiant is competent to be a witness herein; 2. That the affiant is the applicant for the above project; 3. That to the best of the affiant's knowledge the sensitive areas on the development proposal site have not been illegally altered; and 4. · That the affiant has not previously been found to be in violation of sensitive areas regulations for any property in King County, or alternatively, that if there have been any violations, such violations have been/are being cured to the satisfaction of King County. · Date and Place (City and State) I certify under penalty of perjury under the laws of the State of Washington that the foregoing is true and correct. OCT O 1 2003 WP/FORMS/F0RMS96/SDSS1AFFIOAVIT CONCERN S1NSIT AREA COMP.DOC 4/6199 CLC LAND USE SERVICE~ '/,f ,· Prepared for: Transnation A L\NDAMERJCA COMPANY TRANSNATION TITLE INSURANCE COMPANY 14450 NE 29TH PLACE SUITE 200 BELLEVUE, WASHINGTON 98007-9926 CENTERIOR DEVELOPMENT 22617 8TH DRIVE SE BOTHELL, WA 98021 ATIN: MIKE ROMANO 2/1 Order Number: Seller: Order Summary 870890 Buyer/Borrower: Your Reference No.: Loan Number: Thank you for placing this order with Transnation Title Insurance. If you need assistance on this file, please contact: John W. Jones (425) 646-8589 johnjones@landam.com Mark S. Niklason (425) 646-8592 mniklason@landam.com Randy McCrory (425) 646-8591 rmccrory@landam.com 1-800-441-7701 Fax: ( 425) 646-8593 FllE Copy OCT O 1 2003 K11~G COLJNI l LAND USE SERVICES , File No.: 870890 ,ft Transnation RE: THIRD SUBDIVISION GUARANTEE SUBJECT TO THE EXCLUSIONS FROM COVERAGE, THE LIMITS OF LIABILITY AND OTHER PROVISIONS OF THE CONDITIONS AND STIPULATIONS HERETO ANNEXED AND MADE A PART OF THIS GUARANTEE, AND SUBJECT TO THE FURTHER EXCLUSION AND LIMITATION THAT NO GUARANTEE IS GIVEN NOR LIABILITY ASSUMED WITH RESPECT TO THE IDENTITY OF ANY PARTY NAMED OR REFERRED TO IN SCHEDULE A OR WITH RESPECT TO THE VALIDITY, LEGAL EFFECT OR. PRIORITY OF ANY MATIER SHOWN THEREIN, TRANSNATION TITLE INSURANCE COMPANY a corporation herein called the Company, GUARANTEES CENTERIOR DEVELOPMENT the Assured named in Schedule A against actual monetary loss or damage not exceeding the liability amount stated in Schedule A which the Assured shall sustain by reason of any incorrectness in the assurances set forth in Schedule A, DATED: October 14, 2003 at 8:00 am Transnation Title Insurance Company By________..~~~~~~~~~ Authorized Signature Subdivision Guarantee TQ900WA (5/99) Page 1 of 8 .· • Order No. Customer No. 870890 1. Name of Assured: CENTERIOR DEVELOPMENT 2. Date of Guarantee: October 14, 2003 at 8:00 am SCHEDULE A Liability: Charge: Tax: Total: The assurances referred to on the face page hereof are: File No.: 870890 $200.00 $200.00 $17.60 $217.60 That according to those public records which, under the recording laws, impart constructive notice of matters affecting title to the following described land: As fully set forth on Exhibit "A" attached hereto and by this reference made a part thereof. Title to the estate or interest in the land is vested in: ROBERT A. MAIR AND CLYDERAE MAIR, HUSBAND AND WIFE, AS TO PARCEL A; AND DAVID A. NYBLOM AND DEBRA L. ALBISO, HUSBAND AND WIFE , AS TO PARCEL B subject to the Exceptions shown below, which are not necessarily shown in order of their priority. Page 2 of 8 Subdivision Guarantee ,· ' SCHEDULE A -Continued File No.: 870890 EXCEPTIONS: 1. Taxes or assessments which are not shown as existing liens by the records of any taxing authority that levies or assessments on land or by the public records. 2. (a) Unpatented mining claims; (b) reservations or exceptions in Patents or in Acts authorizing the issuance thereof; (c) Indian treaty or aboriginal rights, including, but not limited to, easements or equitable servitudes; or, (d) water rights, claims or title to water, whether or not the matters excepted under (a), (b), (c) or (d) are shown by the public records. 3. Title to any property beyond the lines of the land expressly described herein, or title to streets, roads, avenues, lanes, ways or waterways on which said land abuts, or the right to maintain vaults, tunnels, ramps or any other structure or improvement; or any rights or easements therein unless such property rights or easements are expressly and specifically set forth in the land described herein. 4. GENERAL PROPERTY TAXES and SERVICE CHARGES, as follows, together with interest, penalty and statutory foreclosure costs, if any, after delinquency: (1st half delinquent on May 1; 2nd half delinquent on November 1) Tax Account No.: ~ fillli:11 2003 $2,443.63 142305-9022-07 film $1,221.82 Total amount due, not including interest and penalty: Levy Code: Assessed Value Land: Assessed Value Improvements: (Covers Parcel A) 4350 $95,000.00 $106,000.00 Balance $1,221.81 $1,221.81 5. The 2003 County Tax Roll discloses that a mobile home is situate on the land herein described and is being taxed under personal property taxes as Account Number 39922612. Inquiry must be made for correct payment amount and procedure. (Covers Parcel A) Page 3 of8 Subdivision Guarantee • f SCHEDULE A -Continued File No.: 870890 6. GENERAL PROPERTY TAXES and SERVICE CHARGES, as follows, together with interest, penalty and statutory foreclosure costs, if any, after delinquency: (1st half delinquent on May 1; 2nd half delinquent on November 1) Tax Account No.: Year 2003 Billed $7,152.13 142305-9009-04 Paid $3,576.07 Balance $3,576.06 Total amount due, not including interest and penalty: $3,576.06 Levy Code: Assessed Value Land: Assessed Value Improvements: (Covers Parcel B) 6870 $245,000.00 $324,000.00 7. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: PURPOSE: AREA AFFECTED: RECORDING NO.: KING COUNTY WATER DISTRICT NO. 90, A MUNICIPAL CORPORATION WATER AND SEWER MAINS NORTHERLY 30 FEET OF PARCEL B 7507170567 8. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: PURPOSE: AREA AFFECTED: RECORDING NO.: KING COUNTY WATER DISTRICT NO. 90 WATER AND SEWER MAINS WITH NECESSARY APPURTENANCES NORTHERLY 30 FEET OF PARCEL A 7507170570 9. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: PURPOSE: AREA AFFECTED: RECORDING NO.: (Covers Parcel B) PUGET SOUND POWER AND LIGHT COMPANY, A WASHINGTON CORPORATION ONE OR MORE ELECTRIC TRANSMISSION AND/OR DISTRIBUTION LINES AS CONSTRUCTED OR TO BE CONSTRUCTED, EXTENDED OR RELOCATED 9502230476 10. Right to make necessary slopes for cuts or fills upon the land herein described as established in Volume 31, of Commissioner's Records, Page 415. (Covers Parcel BJ Page4 of8 Subdivision Guarantee ' SCHEDULE A -Continued File No.: 870890 11. ALL COVENANTS, CONDITIONS, RESTRICTIONS, RESERVATIONS, EASEMENTS OR OTHER SERVITUDES, IF ANY, DISCLOSED BY SURVEY RECORDED UNDER KING COUNTY RECORDING NO. 9508099008. RIGHTS OR BENEFITS, IF ANY, WHICH MAY BE DISCLOSED BY THE RECORDED DOCUMENT(S) ABOVE AFFECTING LAND OUTSIDE THE BOUNDARY DESCRIBED IN SCHEDULE A. (Covers Parcel BJ 12. DEED OF TRUST AND THE TERMS AND CONDITIONS THEREOF: GRANTOR: TRUSTEE: BENEFICIARY: ADDRESS: LOAN NO.: ORIGINAL AMOUNT: DATED: RECORDED: RECORDING NO.: (Covers Parcel BJ DAVID A. NYBLOM AND DEBRA L. ALBJSO, HUSBAND AND WIFE NORTHWEST FINANCIAL CORPORATION, A WASHINGTON CORPORATION FIRST SAVINGS BANK OF WASHINGTON P.O. BOX 907, WALLA WALLA, WA 99362 $203,150.00 JULY 21, 1995 AUGUST 1, 1995 9508010201 Investigation should be made to determine the present balance owed by contacting the appropriate lender/agency/individual. (Covers Parcel BJ Investigation should be made to determine the present balance owed by contacting the appropriate lender/agency/individual. 13. DELETED. Page 5 of8 Subdivision Guarantee ; ' SCHEDULE A -Continued File No.: 870890 14. DEED OF TRUST AND THE TERMS AND CONDITIONS THEREOF: GRANTOR: TRUSTEE: BENEFICIARY: ADDRESS: LOAN NO.: ORIGINAL AMOUNT: DATED: RECORDED: RECORDING NO.: (Covers Parcel A and other property) ROBERT A. MAIR AND CLYDERAE MAIR, HUSBAND AND WIFE FIDELITY MORTGAGE TRUSTEE SERVICE, A CALIFORNIA CORPORATION IMC MORTGAGE COMPANY D/B/A COREWEST MORTGAGE COMPANY $122,000.00 JULY 18, 1997 JULY 31, 1997 9707311685 Investigation should be made to determine the present balance owed by contacting the appropriate lender/agency/individual. 15. DEED OF TRUST AND THE TERMS AND CONDITIONS THEREOF: GRANTOR: TRUSTEE: BENEFICIARY: ADDRESS: LOAN NO.: ORIGINAL AMOUNT: DATED: RECORDED: RECORDING NO.: DAVID A. NYBLOM AND DEBRA L. ALBISO, HUSBAND AND WIFE CHICAGO TITLE INSURANCE COMPANY KING COUNTY CREDIT UNION 701 5TH AVE. #1800, SEATILE, WA 98104 $98,000.00 SEPTEMBER 17, 2001 SEPTEMBER 24, 2001 20010924002679 Note 1: The liability amount shown on Schedule A herein is a minimum because no specific liability amount was requested at the time the application for title insurance was made. Please contact your Title Officer if a greater liability amount is required, for which an additional fee will be charged. Note 2: The following may be used as an abbreviated legal description on the documents to be recorded, per amended RCW 65.04. SAID ABBREVIATED LEGAL DESCRIPTION JS NOT A SUBSTITUTE FOR A COMPLETE LEGAL DESCRIPTION WITHIN THE BODY OF THE DOCUMENT. PTNS OF NW 1/4 SE 1/4 SEC 14 TWN 23 N RNG 5 E BRP/erl Page 6 of8 Subdivision Guarantee ' SCHEDULE A -Continued ENCLOSURES: Sketch Vesting deed Recorded encumbrances Page 7 of8 Subdivision Guarantee File No.: 870890 ' • EXHIBIT "A" LEGAL DESCRIPTION: PARCEL A: THAT PORTION OF THE NORTH 1/, OF THE NORTH V2 OF THE NORTHWEST 1/4 OF THE NORTHWEST 1/4 OF THE SOUTHEAST 1/4 OF SECTION 14, TOWNSHIP 23 NORTH, RANGE 5 EAST W.M., LYING EASTERLY OF THE EASTERLY MARGIN OF 156TH AVENUE S.E. AS DEEDED TO KING COUNTY BY DEED RECORDED UNDER KING COUNTY RECORDING NO. 1094243; TOGETHER WITH A NON-EXCLUSIVE EASEMENT FOR INGRESS, EGRESS AND UTILITIES OVER, UNDER AND ACROSS THE NORTH 15 FEET OF THE WEST 187 FEET (AS MEASURED FROM THE EASTERLY MARGIN OF COUNTY ROAD RIGHT-OF-WAY) OF LOT 2 OF SHORT PLAT NO. 878133, RECORDED UNDER KING COUNTY RECORDING NO. 8002250639, RECORDS OF KING COUNTY, WASHINGTON; ALSO TOGETHER WITH A NON-EXCLUSIVE EASEMENT FOR INGRESS, EGRESS AND UTILITIES OVER, UNDER AND ACROSS THE SOUTH 15 FEET OF THE EAST 22 FEET OF THE WEST 199 FEET, AS MEASURED FROM THE EASTERLY MARGIN OF SAID 156TH AVENUE S.E., OF THAT PORTION OF THE NORTH 11, OF THE NORTH 11, OF THE NORTHWEST 1/4 OF THE NORTHWEST 1/4 OF THE SOUTHEAST 1/4 OF SECTION 14, TOWNSHIP 23 NORTH, RANGE 5 EAST W.M. LYING EASTERLY OF THE EASTERLY MARGIN OF SAID 156TH AVENUE 5.E.; SITUATE IN THE COUNTY OF KING, STATE OF WASHINGTON. PARCEL B: THE EAST 11, OF THE NORTHWEST 1/4 OF THE SOUTHEAST 1/4 OF SECTION 14, TOWNSHIP 23 NORTH, RANGE 5 EAST W.M.; EXCEPT THAT PORTION OF SAID EAST V2 OF THE NORTHWEST 1/4 OF THE SOUTHEAST 1/4 OF SAID SECTION 14 DESCRIBED AS FOLLOWS: BEGINNING AT THE SOUTHEAST CORNER OF SAID EAST 11, OF THE NORTHWEST 1/4 OF THE SOUTHEAST 1/4 AND THE TRUE POINT OF BEGINNING; THENCE NORTH 25°21' EAST 523.99 FEET ALONG THE EAST LINE OF SAID EAST V2 OF THE NORTHWEST 1/4 OF THE SOUTHEAST V•; THENCE NORTH 88°07'58" WEST 653.61 FEET TO THE WEST LINE OF SAID EAST V2 OF THE NORTHWEST 1/4 OF THE SOUTHEAST V•; THENCE SOUTH 00°27'05" WEST 525.82 FEET TO THE SOUTH LINE OF SAID EAST 1/:z OF THE NORTHWEST 1/4 OF THE SOUTHEAST V•; THENCE SOUTH 88°17'35" EAST 653.84 FEET ALONG THE SOUTH LINE OF SAID EAST 1/:z OF THE NORTHWEST 1/4 OF THE SOUTHEAST 1/4 TO THE TRUE POINT OF 8EGINNJNG; AND EXCEPT COUNTY ROAD CONVEYED TO KING COUNTY BY DEED RECORDED UNDER KING COUNTY RECORDING NO. 2680904; SITUATE IN THE COUNTY OF KING, STATE OF WASHINGTON. : ' \J• • • . . • • • : 1, 1; I : ; • ..; • • ......... ...... .,, " ... "" n.-,. . ~ .. : ,.r..,,..--------1306!') ---- ' " " B ;: r,u., -~:, ;;; " -~ \ ' /.J ~ (J),18' "'01lt ,.:~ ,, .• i "'@ • ,, •: ,:,.-1 .• 7rJ ' c-----J-;, .:,,;-----:-· ..... .,, .. ,,.,"'""--''!;c.,;"."',"----...:.1' l ' •' ~I •: .r ·' " ~ : ~ :i ; 1 i . ! • : ~: 3' .::"";.,..,~I:.. ---· ----~!/.1.!L-SE 139 TH PL. ,,,.r.;-::.r,:;---z-7T't, KCSP 481066 -.18109100~03 . • • I .. . .. : ... , M ':'t .. 0 ,,. ... ' ' • • i1r/ ~: '-"rz ··:':::;,,\ I (3 ,u~z ..... ~ . .,, ) .. .. .,, ,,1:J.,_ ,1J ~~ .. , . ' ,·, .-.:.· 0:/ ..,,, .. ~ . . I • q ! ' 0 • i ~ ,,,..-~ "'@" ----·-"-'---__ J I · 1· ~ . ., ... ·' .QI This sketch is provided, without charge, for your information. It is not intended to show all matters relared to the property including, but not limited to, area, dimensions, easements, en• croachments, or location of boundaries. It is not a pan of, nor does it modify, the commitment or policy to which it is attached. The Company·assumes NO UABIUTY for any matter related to this sketch. References should be made to an accurate survey for further information. : SCHEDULE OF EXCLUSIONS FROM COVERAGE OF THIS GUARANTEE 1. Except to the extent that specific assurancu are provided In Schedule A of this Guarantee, the Company assumes no liablllty for loss or damage by reason of the following: (a) Defects, liens, encumbrances, adverse claims or other matters against the title, whether or not shown by the public records {b) {1) Taxes or assessments of any taxing authonty that levies taxes or assessments on real property; or. (2) Proceedings by a pubhc agency INhich may result in taxes or assessments, or notices al such proceedings, whether or not the matters excluded under (1) or (2) are shown by the records of the taxing ilUthority or by the public records (c) (1) Unpatented mining daims: {2) rese!Viiboris or exceptions in patents or In Acts authorizing the issuance thereof: (3) water rights. claims or title tD water, whethe1 or not the matters elcluded under (1), (2) or (3) are shO'Nn by the public records 2. Notwithstanding any specific assurances which are provided in Schedule A of this GuarantH, the Company assumes no liability for loss or damage by reason of the following: (a) Defects, liens, encumbrances, adverse claims or other matters affecting the title to any property beyond the lines of the land elpressly described in the description set forth in Schedule (A), (CJ or in Part 2 of this Guarantee, or title to streets, road$, avenues, lanes, ways or waterways to which such land abuts, or the right to maintain therein vaults, tunnels, ramp$ or any structure or 1mprovements, or any rights or easements therein, unless such property, rights or easements are elpressly and specrflealty set forth in said description. (b) Defects, liens, encumbrances, adverse claims or other matters. whether or not shown by the public records: (1) which are created, suffered, assumed or agreed to by one or more of the Assureds; (2) which ,esult in no loss ID the Assured; or (3) which do not result in the invalidity or potential invatid1ty of any Judicial or non- Judicial proceeding which is within the scope and purpose of the assurances provided (e) The identity of any party shown or re/erred to in Schedule A. (d) The validity, legal effect 01 priority of any matter shown or referred to in this Guarantee. GUARANTEE CONDITIONS AND STIPULATIONS 1. Definition of Terms. The following terms when used in the Guarantee mean: (a) the 0 "Assu1ed'·: the party 01 parties n_amed as the Assured in this Guarantee, or on a supplemental writing executed by the Company. (b) "land": the land described or referred to in Schedule (A), (CJ 01 in Part 2, and improvements affiled thereto which by law constitute real property. The term "land" does not include any property beyond the lines of the a1ea described or re/erred to in Schedule (A), (CJ or in Part 2. nor any right. title, interest, est.ate or easement in abutting streets, roads, avenues, alleys, tan es. ways or waterways. (c) "mortgage": mortgage, deed of trust, trust deed. or other security instrument (d) "public records": records established under state statutes at Date of Guarantee to, the purpose of imparting constructive notice of matters relating to real property to purchasers for value and without knOMedge (e) "'date": the effective dale. 2. Notice af Claim to be Given by Assured Claimant. An Assured shall notify the Campany promptly in writing in ease kn<l'Medge shall come to an Assured hereunder of any daim d tl!le or interest which is adverse to the title to the estate or interest, as stated herein, and which might cause loss or damage for which the Company may be liable by virtue ol this Guarantee. II prompt notice shall not be given lo the Company, then all liability of the Company shall terminate with regard to the matter or matteis fo, which prompt notice is required; provided, however, that failure to notify the Company shafl in no ease prejudice the rights of any Assu,ed under this Guarantee unless the Company shall be prejudiced by the !allure and then only to the eJCtent of the prejudice 3. Na Duty to Defend or Prosecute. The Company shall have no duty to delend or prosecute any action or proceeding to wttieh the Assured is a party. notwithstanding the nature of any allegation in such action or proceeding. 4. Company's Option to Defend or Prosecute Actions; Duty of Assur.d Clalmant to cooperate. Even though the Company has no duty to defend or prosecute as set lorth in Paragraph 3 above: (a) The Company shatt have the right. at its sole option and ctist, to instiMe and prosecute any action or proceeding, interpose a defense, as limited in (b), or to do any other act which in its opinion may be necessary or desirable to establish the title to the estate or interest as stated herein, or to establish the lien rights of the Assured, or to prevent or reduce loss or damage to the Assured. The Company may take any appropriate action under the tem,s of this Guarantee, whether or not it shafl be liable hereunder, and shall not thereby concede liability or waive any provision ol this Guarantee. If the Company shall elercise its rights under this paragraph. it shall do sa diffgently. (b) II the Company elects to exercise its options as stated in Paragraph 4(a) the Company shaU have the right to select coun$el of its choice (subject to the right of such Assured to object tor reasonable caUS&) to represent the Assured and shaU not be liable tor and will not pay the fees of any other coun$el, nor will the Company pay any fees, costs or expenis-es incurred by an Assured in the defense of those causes ol action which anege matters not covered by this Guarantee. (c) Whenever the Company shall have brought an action or interposed a defense as permitted by the provisions d this Guarantee, the CClmpany. may pursue any hbgation to final detem,inalion by a court of competent jurisdiction and eipressly rese1Ves the right, in its sole discretion, to appeal from an adverse judgment or order. (d) in an cases where this Guarantee pem,its the Company to prosecute or provide tor the defense of any action or proceeding, an Assured shall secure to the Company the right to so prosecute or prOYide tor the defense of any action or proceeding, and all appeals therein, and permit the Company to use, at its option, the name of such Assured !or this purpose. Whenever requested by the Company, an Assu1ed, at the Company's upense, shall give the Company aa reasonable aid in any action or proceeding, securing evidence, obtaining witnesHs, pro1ecuting or defending the action 01 lawful act which in the opinion ol the Company may be necessary or desirable to esta.blish the title to the estate ot interest as $lated herein, or to CLTA Guarantee Conditions and Stipulations (Revised 12/15/95) WA.17.02.00; SC No.: 11727 estab~sh the lien rights of the Assured, 1f the Company is prejudiced by the failure ol the Assured to furnish the required cooperation, the Company's obligations to the Assured under the Guarantee shall terminate. • 5. Proof of Loss or Damage. In addition to and atter the notices required under Section 2 of these Condllioris and Stipulations have been provided to the Company. a proof of loss or damage signed and s....om to by the Assured _shall be fum_ished _to the Company Within ninety (90) days after the Assured shall asoerta1n the lact:s g1vm9 nse to the loss or damage, The proof of loss or damage shall describe the matters covered by this Guarantee ....tiich constitute the basis of loss or damage and shall state, to the e,ctent pO$Stble, the basis ofealeulatmg the amount of the loss or damage It the Company is p1ejudiced by the failure of the Assured to provide the required proof of loss or damage. the Company's obligation ID such assured under the Guarantee shall terminate. In addition. the Assured may reasonably be required to submit to examination under oath by any authorized representative of the Company and shall produce for eKaminatlon, inspection and copying. at such ,easonabJe times and places as may be designated by any authorized 1epresentative of the Company, all records, books, ledgers. cheeks, correspondence and memo1anda, whether bearing a date before or after Date of Guarantee, .....t.ich 1easonably pertain to the loss ar damage. Further. 11 requested by any authorized representative ol the Company, the Assured shall grant its permission, in writing, for any authorized representative of the Company to e•amine, inspect and copy all records. books, ledgers, checks, corrHpondence and memoranda in the custody or control of a third party, which reasonably pertain to the loss or damage. Al information de$ignated as eonfldenllal by the A55ured provided to the Company pursuant to this Section shall not be disclosed to others unlt:Ss, in the reasonable judgment of the Company, 1t is necessary in the administrabon of the daim Failure of the Assured to submit tor e.amioation under oath, produce other reasonably requested information or grant pem,ission ID secure reasonably necessary infom,allon f,om third parties as required in the above paragraph, unless prohibited by law or governmental regulation, shalt terminate any liability ol the Company under this Guarantee to the Assured /or that claim. 6. Options to Pay or Otherwise Settle Claims: Termination of Liability. In case of a daim under this Guarantee. the Company shall have the follO'Mng additional options: (a) To Pay or Tender Payment of the Amount of Liability or to Purchase the Indebtedness The Company shall have the option to pay or settle or compromise 101 or in the name of the Assured any claim which could result in loss to the Assured within the coverage ol this Guarantee. or to pay the full amount of this Guarantee or, if this Guarantee is issued for the benefit of a holder ol a mortgage or a lienhoklet, the Company shall have the option to purchase the indebtedness secured by Mid mortgage or said lien for the amount owing thereon, together with any costs, reasonable attorneys· fees and expenses incurred by the Assured claimant which were authorized by the Company up to the llme of purchase. Such purchase, payment or tender ol payment of the full amount of the Guarantee shal tem,inate an. liability of the Company hereunder In the event after notice of daim has been given to the Company by the Assured the Company oNers to purchase said indebtedness, the owner of such indebtedness shall transfer and assign said indebtedness, together wilh any collateral security, to the Company upon payment ol the purchase price. Upon the exercise by the Company ol the option provided tor in Paragraph {il) the Company's obfigation to the Assured under this Guarantee tor the claimed loss or damage, other than to make the payment required in that paragraph. shaU tem,inate. including any obligation to continue the defense or prosecution of any litigation !or which the Company has elercised its options under Paragraph 4. and the Guarantee shall be surrendered to the Company lor cancellation (b) To Pay or Otherwise Settle With Parties Other Than the Assured or With the As$ured Oaimant. To pay or otherwise $ettle with other parties tor Of in the name ol an Assured claimant any claim assu1ed against under this Guarantee, together with any costs, attorneys' tees and e•pense$ incurred by the Assured dllimant which -re authorized by the Company up to the time of payment and which the Company is obligated to pay. Upon the elereise by the Company of the option provided for in Paragraph (b) the Company's obligation lo the Assured under this Guarantee fol the claimed loss or damage, other than to make the payment required in that paragraph shall terminate, including any obhgation to continue the defense or prosecution ol any litigation lor which the Company has exercised its options under Paragraph 4. 7. DetermlnaUon and Extent of Liabillty. This Guarantee is a contract of Indemnity against actual monetary lass or damage sustained or incurred by the Assured claimant who has suffered Ion or damage by reason ol reliance upon the assurances set forth in this Guarantee and only to the extent herein deKribed, and subject to the Eicclusions From Coverage of This Guarantee. The liabilrty of the Comp_any under this Guarantee to the Assured shall not elCeed the least of: (a) the amount of liability stated in Schedule A or in Part 2: (b) the amount of the unpaid principal indebtedness secured by the mortgage d an As~ured mortgagee, as Umited or provided under Section 6 of these Conditions and Stipulations or H reduced under Section 9 of these Conditions and Stipulation$, st the time the loss or damage assured against by this Guarantee occurs, together with interest the,eon; ol (c) the diffe,ence between the value of the estate or interest covered hereby as stated herein and the value of the estate or interest subject to any defect, lien or encumbrance assured against by this. Guarantee. 8. Limitation of Llabillty, (a) If the Company establishell the ti!le, or remOVff the alleged defect, lief}. or encumbrance, or cures any other matter assured against by this Guarantee in • reasonably diligent manner by any method, induding litigation and the completion of any appeals therefrom, it shaU have fully performed its obligations with r•pecl: to thal matter and shaD not be liable tor any loss or darriage caused thereby. Page 1 of 2 ' {b) {c) CONDITIONS AND STIPULATIONS CONTINUED In the event of any litigation by the Company or with the Company's consent, the Company shalt have no liab~ity for loss or damage unbl there has been a Fmal determinatiOfl by a court of competent JUrisdlCtion, and disposibon of all appeals therefrom. adverse to the til!e, as stated herein The Company shall not be liable for lm;s or damage to any Assured fol liabihty vo!unta'rity assumed by the Assured in settling any claim or surt 'Mthout the prior written coMenl of the Company. 9. Reduction of Liability or Tumination of Ltabillty. All paymen~ under this Guarantee, except payments made for costs, attorneys' fees and expenses pursuant to Paragraph 4 shall reduce the amount of liability pro tanto. 10. Payment of Loss. (a) No payment shall be made without producing this Guarantee for endorsli!IT'lenl of the payment unless the Guarantee has been lost 01 destroyed, in which case proof of loss or destruction shall be fumashed to the satisfaction of the Company. (b) When liabijity and the extent of loss or damage has been definitely fixed in accordance with these Cond1bons and Stipulabons, the loss or damage s.haTI be payable ..,..,thin thirty (30) days thereafter. 11. Subrogation Upon Payment or Settlemenl Whenever the Company shall have settled and paid a claim under this Guarantee, all right of subrogation shall vest in the Company unaffected by any act of the Assured claimant The Company shall be subrogated to and be entitled to all rights and remedies which the Assured would have had against any person or property in respect to the claim had this Guarantee not been issued. If requested by the Company, the Assured shall transfer to the Company all rights and ,emedies against any person or property necessary in order lo per1ect this nghl of subrogation The Assured shall permit the Company to sue, compromise or settle in the name of the Assured and to use the name of the Assured in any transaction or libgation involving these rights or remedies ti a payment on account of a claim does not fully cover the loss of the Assured the Company shall be subrogated to all rights and remedies of the Assured after the Assured shaft have recovered its principal, interest. and costs of collection. 12. Arbitration. Unless prohibited by applicable law, either the Company or the Assured may demand arbitration pursuant to the Title Insurance Arbitration Rules of the American Arbitration Association. Arbitrable matters may include, but are not limited to, any controversy or claim between the Company and the Assured arising out of or relating to this Guarantee, any service of the Company in connecbon with its issuance or the breach of a Guarantee provision or other obligation. All arbitrabte matters when the Amount of Liabihty IS $1.000,000 or less shall be arbitrated at the option ol either the Company or the Assured. All arbitrable matters when the amount of liability is in excess ol $1,000.000 shall be arbitrated only when agreed to by both the Company and the Assured. The Rules in effect at Date ol Guarantee shall be binding upon lhe parties. The award may include attorneys' lees only ii the law.. of the state in which the land is located permits a court to award attorneys' fees to a prevailing party. Judgment upon the award rendered by the Arbitrator(s) may be entered in any court having jurisdiction thereof. The law of the situs of the land shan apply to an arb~tion under the T1Ue Insurance Arbitration Rules. A copy of the Rules may be obtained from the Company upon request 13. Liabllrty Limited to This Guarantee; Guarantee Entire Contract (a) This Guarantee together with all endorsements, if any, attached hereto by the Company is the entire Guarantftf! and contract between the Assured and the Company. In interpreting any provision ol this Guarantee, this Guarantee shall be construed as a whole.' · (b) Any claim ol loss or damage, whether or not based on neghgence, or any action asserting such daim, shall be restricted to this Guarantee. (c) No amendment of or endorsement to this Guarantee can be made except by a writing endorsed hereon or attached hereto signed by either the President, a Vice President, the Secretary, an Assistant Secretary, or validating officer or authorized signatory of the Company. 14. Notices, Where Sent. All notices required to be given the Company and any statement in writing requited \ti be furnished the Company shall include the number of !his Guarantee and shall be addressed to: Consumer Affairs Department, P.O. Box 27567, Richmond, Virginia 23261-7567. CLTA Guarantee Conditions and Stipulations (Revised 12/15/95) Page 2 of 2 / .. Prepared for: CENTERIOR DEVELOPMENT · 2261 7 8TH DR SE BOTHELL, WA Attn: MIKE ROMANO 5/5 F~lE COPY ~rder No. 870890 Fvt:NOt::Ll J?t:Ydt.--0 Lt..7.fAL w/ 1'""'"1 ~ 'Al U)'r Blz?A; .· ' .. ·,·,· ;i...~.£ .· .. ' . ·~. ~ ... · I RUG-21-2001 12=22 FROM TNT CBELLEVUEJ COMMERCIRL ·,,1!-1;-;;:· ·. · · · .. -~-;~::;i.·: ·~-~:9;-;~ .~:~~r~~ :? J t ~::_, ~ .... ~. .. .e- ··.; .. : Es: · .. · · RECOROEli' · :. ·'· ( .· VOL .. · · . . . · UFl 'PACE..:_· ... -REOUEST or' I I . t: ·,g: ·,2.1. I I I I I ~ ;;/j'f 22 "' 2.. 08 .,o,r~r A. M;kt!S AUorioR ~.mo co:JN.,'f_WAS~. · i CJ . ··-. ti) .. •:-·····••········--.·--.. :E:PUT'( ·-.. -···-···· ·--·-··· --... Statutory Wwaanty. Deed · -·. ----, .. = • ~-- THE C~AXTORS, BRYAN ,R, 11Elim:tcrs end VIOIA. E. H!,.'NDRICl!S, .hia "1.!e,: .. , ~·~f:··" -. ror and 11; c1,r1.t'id~rAilon ·0 1 valuable eoneide:ra.t,ions and Ten ($10.00) Dol.lJuos floa.,. L!l8 ... ,;..~·=-• . ;n h~nd pa;a, ... ..,., and ••"'"" to RCGBll~t:,'"CHAJll)I.lm and HUY A, C!Wm!n, hi:s id!'e, ., Statt of· .-~~ '1oll~~I d~,l~d rr~l t>!l.:Str, ~l~l~\~~~~-n~y of King Washil\(IM:, ' · Tile uet halt':(Eli-)' ot the nort.ll'l;ast. quarter (!Iii' 1/4) or thii southea.ot quarter (SE 1/4) ~ section Fourteen (14), To,,nah.1.p r....nt;r-t1~e (23) North, Range Fi Ye (S) E,'11,ll,, · EXCEPT Count7 Road, ' . . . . . ~ . " • , •' ' ··,;.-. 11,y qi Apz'il, l9SO, 'Afl .... ·.,;;;;_, .. ;: .. ' .. p~.f.9. .. *·~,k.£.C:ad'.".?. ............ {J<AL) . ~ . p' cF-.. 1/ : ;s·:·· . . :_ .. ~ .. .,/1,:-[~ ........ :.:.Q.~/.~-a... •.·· . . . . ~· .. ··-: .. .: .. , '• AUG-21-2001 12:23 FROM TNT (BELLEVUE) COMMERCIAL ~ tl. M.!:fii!!iat .. l4IIIII tt. @! t11·,..1111i1r, ".u.-1 die' "pun:IIHf,, ... TO .. \\'IT!\t:...;~1-:111: n-', ,he .Utt 1Pff1 tn ... n 10 t1wrun1tawon41be1i.tta·baw~ top1,1m&.1~1H tht ·• •~"'" U..-C,,11.,wlns: '""'""l.Nl nal OlilBlc, widi. ~ aP1141r~ Utw:ilt IP till .C-U:.7 of 1iU,q • ~t-~1.-.. f \\'.i~, lr.o•wi1: ~ ....... el GIia -t _B 1,14 GI· .. II,; 2 C 1/6 ol *° -~ l~ oll 11soa6A BA, ? ¢le 1111-llial1ii&a I In& ..... I IINO aa lellm1 r Feaf"il Gil --· Q -et ...... e ct '1 Iii& d .. IIW11. ,i.1 IA <>f Cb e : 1 l'61 -..._ .-.S•111• -•ltli8 .., -u..a "' lililld f t ,a 1/6 oa llt>O llili. 1a 1/6 of *> e · n I l/4 Ul,U ...,. eo llla:a -,....-'"4 ·•a•am1 .-_. aa>w•r 111ae1 pall81-..i"".., 11m111 Us:> oS..,.. • -,.,.. 1/4 ..a• .e..u t ,c 1/6 of• m rs a 1/4, flllll. .. 111ea, 111n w .... "" ........ u.... ..a ...a., @: 1• ::a l/6 ..a *" 8La 1 1/4 oe -a 7 Ml l/41 -., ....,. l"l7'W llaPll ..._ 94863273 -· lllx> be lam 06 .,.... e a I/a 011 dr,, .._ II: a IJ6 ..e • t st s 116 .1167 .'8 _, tbc=o -119"07'111° lilio>t _..uo1 .. ....W -Um CQ,,a -. _., c:> -. "" -l!et lt.c,:, of -9"144 Pen 2 t IJl(I of .,.. .... & l/6 C>f Ille . C l/61 """"'3o E!::n!> 0°!9'21" lbGa, o&Ae lllo -• 1-""' ol -.a...,.......,, l/4 oli ---l/6 oil tl>o llo<Hfocw,oc 114 1117 llooc .. doo em<> po4a& of • ·-el IIIIIL!l!l!l Osmlty l!:?cl1 II&......, S,, tba Cc=tcy el Wes, omeo oll ~. D1dtjac::1. 1;., a.ao~tu, coot.ric:liDDO aml 1"aJ:larvot.limg, of rocord. i !w :,·:ui. .u11l,.,.ml111uu~ af 1h11 c••nfr.,,·t o1rc· ;i• f,,IJ, •··. Jl,eo f1UrL•h.:1o~ [•file i> 'llal'lr TZS8a ~ 11123t1 IR5i'7i'B'i'9 .QDII JJOIUN) ......................................... ~$ 2S.900.DO i 1.1ni,o1r,, ,,f whi,' nuum TPO!'!HS' i1lVCJ IIUIIDaD AUD no/100,. .......................... ,5 :,,,ao.oo • JJoJbt• l, .. !.,., a l\4r.J. t\, .. 11, ,·-1,t 1,1,h,•t"",f i• hrkL.,.· :.,·1,.uu"·1••1;.:\'>1.;u11"l lbr 1.itlallol'lt uf ..:alfl pur,h:a"'-pru:c .. h~l be J•id ;a., 1 1-""· mm BG1DAD mtm'I' rm aa> im11oa.,. ................. _________ tl u,.oo , Orot&u, .. • Ill• !•' •'II •·r 1 ... i. '"' ,,,,. 71:b d:ty n/ ~ , J~ISJ , an\! CEii1 M •• 1IPdl' n.vu: AB l!0( 100 ll5.00 l i. ·, .. , •.• r 1;1,-r,· ..... ,.,. '-·i,•J•· :hr 71:!:J ,L1r uf n.-h :in-I ,\·cry month tlM:"raftt'rr.mtd 1' ,,. ,·,·,:·1· • ,,r, l·.1 ·• i r,,., 1n, 1u,fo:r,: i1111•rc"J,,1 un d.f' aq,,,i,1 J•>l'liun tht-rruf !II lh..-f.111' ,,f GU (6) '"'' ,·rul ,_, .• · ~;.;1 1;. !,., ! .. •rn i•1!:·,-:-.. ·.! l'ti-• mr,11•h:.,· \•:nm,·:,r h,·r .. :,, l'ru\·i,11•,l 11,lmll in,;lurli=o baAh pri11,i1to1\ ;i,nJ i,1;l"rr~. •:.1,1 11., .,.-:.1·. ; ... ·.11:, •,, i. ,.. •;·:•~1,·,I 1i,~1 i., .,, ,·ru~I ,n1rrr•t "",t Uw m1i11.,·t :ipplitd tr., 1•rino i1i:.I :~·.irlt••t , .. ),1·~·,i, 1·:1 ti11 Jd;,I:.:: •·i -• l!I U. °""''""" to !,a eellcetc<I QC -pi-, -.....,tea lo7 ""'""' An l>ri....,.. Oa11oro &a ~ •cit 03t.o ~ lint: opeieo to pm t ee,a ~tel1 ooo Gm-1'0, IDl'RQ or l<>DO • of .... ltmr'O -tJ' *cl>. "'"'"'" -~· pNlplrltF ID -..... d>, J.-1 --40 tollc=:); -pc:, of 1111111/4 of IBT 1/6 of 8 1/6 of 111.6,DB.-a. Im U,,.. llb,,a.., -· cdbcd oo hn....,, l!laQ ac mo 1111 eo,r of .., e.Wl-..0: di 8 0"25'11• ll <>ls d>o 8 1B of od cnbdl91.0la:1, 60.6G" co Ibo tn19 N9 al tr af lam! 11:arolD 4 , .. ,, .. 6 DC:I~ S o•u•11"" 0 alo cd It 1• 67'; lb D 88 .. 07 1 !1,11 11 9 pc:ollsil eo daa ti lo of 8' GUIPlt~. US.I01 i 1tt. D 0•21•05M o ,,. i tJa a ss•01•so• n ~1ca1 •• tS,o D b:i oa o:a ~IA::!, es,.eo~ PJ1W11. 1:0 tho Tr,oo 11"" -,r ""="7 -· ll8U -""' to ='"" ff""-,, l.'soo -.,g ll!/ril 17 ,111611 ·,~·; rl, • •. ,' ,-,,,:••',,· '.:h ;.,:::··· " ,. ; , , ... •·. ,'. '.:.'.,11. r,,f t•ri, , ,·•tnlta, I•, n1·"1~1t""' or,.,,.,., ,,u1 .... , ... 1•,IJ( ~· .1,11:,r .. ,,. , .• , : ;·:: :,.i ,t'r ~.1,:,·: .... ,·.11:~!1··1 I"., ,J,Td. ,-1.f,.w,:t ln .... iol "..:;1111/,1,1,·1, ""·I''' '\1,:1·•!1•1:1-:~ ... ·1 1n,111~11to·i1,., r, .11,,r,·,I ,,1 I, 1,1 f •• • • ,. N"::r:..-1. .' .·, •.,! r, .;,·. •·,, .:,,! :·t "· .. . ~ ' • .i::, .. · .. ·1 '. ., .•••••. ·,. :·• ,i.,-.11 · .• ti."' ,.f ... 11\' ''"~'''" , . .,., ... ,. r;· •.o. ,.,, ... ,.,t 1.,,,,1 ,., • '·: · r .: .. : ••I ·ti--t.,; , •. , ,.f ,: 'i·r,nn-,·~ .. , All)' l""rt Uw1.-,i 1,·r 111..l,h, ... ,. ·: -•.;: • . •r:·•·· :':;:i ; .. ·.1;,.;a .; ·' • , ,· 1-•\r.·h1~r 1>ti,f', 1n kap all 1•11,l,li;,~. ,,, .... ,.! ,i .. ~. t\i ... • .·I,.: •...•. ,. 1 "•:t;· --~s,-:=rAA 1111-?hofl'r .. r tltol t •• 1,:u11 _.Jj •i, '• •!.,·.:. '. 1 If•~'•,,",,• ·I• .j ,,•,.•. : "•'f~-ill .... ,af,•111;•:.:\ .1 ••11,.1.rtu .'. !, .. ,. It • ·• ..,1 .a_ 'if rt., · ,•i;,., •• , .. ,'r. :P.•~ ,...a,.9rdl., 1!.r~~n,!,,11,.,1,,•. ni,,!1· ••,. !, :, .,,., ... •,.' "'• .,:1• '•' '' ;, .. ~/r ••. l,it:1·:b1.·, -.;1h 1•111·,, ..... d'°''rl"I"• ft ..... •Llr ,., ''·' ~... '•I ,,,_. .. f I,•:•! l•l 1,r1 ,.,. ........ -It 1w 1'11lliil'..:lllr1r l;t th.-1,uhli..""' '"I •~•""'-•u,i t•·, I r·:•'•11? f' --llr! ')\f''}la"l"',~:.Jfff=IMf .. ~11 dria1111 iw,<T\.-,·,}i.[.t l'~~-,.. .,.. .··~ .,..,(~ , P.04/05 ~1:;1:/. ·.· ..:; r-- "<f ::,,. {i:i in AUG-21-2001 12:23 FROM~ (BELLEVUE) COMMERCIAL TO -. ....... ;1 . ' , ' .... l"lt:,~ <a>=*" Oo!I iq .. ,, ., ll>id~~ Imo lio= "'* ""6 ....... tho - -...... ~t,":'!'I~""'~ . ;,,::.111ar . .: -°'~'Si· '"':~~ ....... ~,. <t:S~ -w: v, c.;u .... :. r1ea INlliil"~-az~ "*-aatl'fNltS~ """*" ID """ a,:;d, 0 pall of 11>!1> -Tb"''* clmll -lllo ~ oa 111;:11) ~~-bJ lleo au.,,,,-..,,~""'"""'' .. "· _., ! -=~osol!a>atl!b~.laili,,....., ____ ..,.....M• .,. ""'-..... _., ,._.. n, .... .,.. __ ... __ ..,&,o ·--.......... -·-w.......,, , .• ,.. ltllolll'UltQ ~a~ ,=ee, of •ilk~. ~ Iba prrrlr .mt IO dla foll ~ of alw wail- ,....t,,c,,prio>~ ..,. .. ~t.,-ol <!tf.,, IAeholldoollllo .... ,od!oooY--....,._,,_ ., -., ,... ,.,. --"' ll»pa-..... .... ... Pl. . n,. --.. lull ... ,.,.... of .,.Id l*fflll'Ct ..... Ill -""""""""" q,otlA,ol, "' ...... ·-··· ~ad ,bli""' codl:Q ~_, a JC(OJ oml 1n1flklr111 1nrr:ul1)' d,ed al wd ~ pn••k,-1. d,j,.1-IA lb:, l"lf\lJ.\"it.Wih "'"'""' pNVkt.d , •• llfflr it bl 111:t ~Ofta.ktufU~'I. ln<"D~ OW pardla=t d:19 fail10~f llA1 ~,nN.'111,•f ilw llil"\ 1,1,n !1,1•. l•f'4 .... 1~b· :a1 lN ·-,1,. MUW ,II.all ,.u dl&O ~ llsni..a.1(111!11 11..deed.01 PfU'll,dlr IU 1Cffurtt1 IIAY • .. ,.,u/fUI " at:;rft'CIGQI aln,watirt, Ibo ...ctrr IIIDJ P1ot1 IG ~ tcati'eilllftt Qdd mAOlfGatJan t,f "'"' t'l)UlnM'I :awl .. , .... , .. 11, h .-1"'h•on 1.,., .. ~ :111 ~, of 1M pan-h&Nr ~ llhaJJ eeacs DDd ~nr a..d ""' p!IJlla,"ftl(, 1lwm•,l•.,,.. U-\.-1Jr1'14mrlr"r ~ 1hr p11n-.fla.-r loNII""' h"l:i.inNI b11hr si,lltf 1n 1iq11ii!Diun or ... ·~ 1u•1,1itN"tl ·~ ,,... ... .,, u( 11.dr'fl. fiilurr. S,iotvi.•r .. r :.U tlru"nd~. niitir,.,, •• ntlwt fQI.IIIR ,.rifb f'l"ltP"'1 ltJ~ ,t,,,d:ar.;.ti•,n ,,r l•tl'l"rmr .:tu,\ ,•.11i,.· .. t1.a1l'•h m:.r 1 ... 11i:&<olr ,,:.; n-ieir.&~ mail .11 IN lol\uiomcl nd,1""15. ICr•'11: ueu • 16:0lb A.a, o.a., ~. l'.lO!t)lm;fK'¢' or J.I ~,;h 1.111,.... ;aalilrll!I .. ii• th.-purdav, w,JJ inJH--:i1r it1 writiuato ,a..ntt-. Orlb:r~r ma.)' r.k-..-t lu 1 .. i1o1: ;,,,,.,.1, "' .:to.·1" .. 1~. '"'' a1111 i11.1d~l1o111i u."dllu" Qb1::r.llnrnl, or oa artt po,,_.... ,w pSJ"IIMI&-"'· msok h)· u.,. -cl1cr .u.J rTIDy.Jilr lr)' 11,c, pti.ill!od', i1 lwi-u ..,ap&lb11"'11ba1 1'1t ~uvmlllll to pa,J ll'lll!rmr•li.ale intcl:albu,,t11~ 111 \II Jloll>" 11r10" "IA'..i.lir I,~· 1lw-pv,,·ia •• ,r. ~...-;, .. lrf.oe1Mlfot11 uf 1hr t'U\·1!116111 la.I ~kc a "'-'I tlut n"l"fY Md :a,tic,,, 11, an .:an"•• :r.ri..i,iat ~, ,-.....t~"1. f,,r thr 11'(',11,·tl")· uf nlQnrJ' only, D.I if UM' fJ'U'S»• UI pt.y hall l)fffl l'Jliwc-ed nt • Ji.ffrhfll. i11"*run.wnt. :and lN1 nu "'""Ii :..c1H111 shall <"1111..,juu• an dedioa. "°' to P")tW'd lllhrraotN' h l<I a111 ..ul, ... ,,.,n,.. •ldauh, ;i.1111 t1U w2.iu·r I,'.'· 1h.-...,\J.-r .. f :iny •ld11.ul1 ul\ 1tw pan al thr. p.:rchaM't' Jaa11 lic .:onkltm·•I :i~ a •·:,,u..-uf .au!f 'Lll~n .. 111 drfauh . . . In ..111~· ~" nr .;11:1i.m h• ""'''""' :i.ny c,~t uf lhi~ conlr1'C'I or tn rt1l1Kt art~ in~1:dllllfDI P,}"fflf"IJI ~ .:m~· rb:t~,,. '''.1Slftf 1Jwo·tmrn. 1hr 1-.un h:a--.-••'"" to r;t)' 11 "'~bla',..... a, :i.t~'• fN'!I •nd :rn 1"1Jttl •1111 n1""n"" ,n ,onnrf°t,.,n .. ,111 "Ul·h ,:uit. ;iod iU'II, lhP rnllnMlhlr ''"" 1(.1( varc:bbic rN"onl-. wh~h ~m1 !IHO b, hlr11tdrd In :u1y Judll!JWSII ur 4rrl'Pr .-,nf'N"I in •ri omit. :,q· .. ,1 E «W WA:--111:-,,.·,;·1, ·~· 1 ... C•n.in•• ,., UD6 In n.r k.J,.,wn 1,, 1.-1hr 111,livi,hub ,lt-°"ril'("•\ ill ;aPd w..-11-, C"lf°'''ll'l•••l 1l1t' w~,hin a1ul t,,,...a:,'111,: i1,.,.,1;11.,,i,. :,u,t :u.•1,;rw-·lr.li~'11Jhar cbay JiK7ird 11,r -&.i,nr :a, tho11' frN :r110I \",11un1:1ry ,1,•1 .. ml ,i.-... 1,. j,,r 1hr u!IM-:tml 1111nu"" .. thrrdr, ffll'n1i1of\rl1:. r;t\'l,:S" 1111,lrt' ,n,• h:m,t :aml ,JTi.-i;at mr:r:l 1hi!. ~ 1- .. ,: a •. > l ...--iojf ld -· .. ,~ .. i!i i •: ..... .. ~~&E······~--.•. ~:.: ~1 \'.".,I.' -'~I C -~ ...... Ii a ~. ~ 1: -r. E u i :·~ l lmi ., . .. ... 0 ~. . -1 ': "'' . t .. ,. ... I". 7. r,, 30 g ~"' ii< I! s ;; J; .. d l w : :.i;i :, ~·· I .. r-• t: :; ' i' J.:u.~ :!· Fl =f· I i r;i;,:.; . . ' .,. I , . i ' l J .... ..i:"• i." ---~ ·-----~ '( I i . ~- •'_J ,\~J. 9p: I ~ ~ =; :It ; ~ ~ • J! . l ) I 94863273 P.05/05 TOTAL P.05 .. (® King County ODES This' certificate s.tlie Seattle'King County Department of Public.Health and · th.e Department of Development arid · . , Environmental,Services wiili info~matio~'. · .. , · DEPARTMENT OF DEVELOPMENT AND necessary to evaluate development .,. · ' ' ENVIRONMENTAL SERVICES proposais. . . . . . 900 Oakesdale Avenue Southwest L'_.;..__ _ _;.·:...· ,....:...=+2::.;..;.;2.:.;...-,,.;c..--.:.,.!f..'-"'--"I . ', .. -,., '" ;:· ).'~. Renton, Wa 98055-1,219 . . . . . . .•. ·., .. · .. ···. • ... ·• ' ., • ,·, ,••,•.'.;•,,c,::';)i::i;;;;L,;: .. King· County Certificate .. of·Wate·r:11Ava ila1bJ. lity;. ' : ' ,.-. ·. .• : ,. \, .. :_., '·~ . .,';,-:; .. ·.,:.i·'.~t-i'·~··;:·_~:;,/'::;~:.i·;, .. :j:,}/:.· Do not write In this box number D Building Permit D Short Subdivision ~ Prellmlnary·Plat or.PU_D: . D ·Rezone or other . -------~ Appll~nt's name: u.s. Land Development Associates Proppsed-use:·Sinqle Family Residences(Evendell -75 lots) Location: Between 156"' & 160'h Ave SE. South of SE 135th Street. : <13 acres:·) (attach.map and legal·descrlpti;m If necessary) · ~-T -T -e ""' Water purveyor information: . . . 1. D a. Water will be provided by service connection only to_an existing \ .'":,::( J:t>·.~/' ··. '• ' :/ .: :,.·. OR ~] b. Water service will require an Improvement to th~ water s~stem· of: .,. ) ' D (1) feet of water.main to reach the site; and/or .· ·. . . ·. :, . ·. . 2. ~-a. 119._(2) The co.nstructlon of a distribution system on the· site'; ·a.~d/o°r." :· . · /; , , .. ,i. ; ; .. . . . : · .. · · ,. ·.·. •. ~3) Other (describe) D.E. Required-offslte Improvements. Specific reg: will be'determlriea In breUmlnaiy requirements meeting. · ·. · ,, ' ' . ' . '.·-·,.· . .• The water system Is In conformance with a County approved water ccimp/ehen~l~~:pl~n;,_: . ' ., ., OR • ' ' ' , ' ,• ' . • • , \ • . . ' I~/ • . > . '. . • t, • : ; ' : . .• ' ' . D b.· . -· 'The.water system lmprovementis no\ln conformance.with a.<:guntyc'~pproved;,water.:col1)prehenslve ... :";:.. · .. '. · · . plan and will ·require a water comprehensive plari amendment.. (This may cause a.dela/ln lssu·ance':of a permit or. "approval). · .,,..._ ·,· ·. · . •• '. , .-: ., ·: ·.. ...<: ,i·" : " . · .. ·, . :. ,-> . ..., ..... _,·.{_ .·_, .. ::;;·.,.-' .. :<.<i,_·: .. :<c··· .~_:: .. )."_·::,;::,::\i,i:\;_: .. : .. :·;-.r,.:{;'.'~;i<:··.-~}/;::,..~>}_'''" 3. .. ~-.. a. OR D b. 4. ~ a. The proposed project· is within the corporate 'limits of. the district; or has peen granted B<iundary•Review·Board • ·• • ·• · . approval for extension of service outside the district or city, or Is within the County.approved se~ice· area:of'ii .: · · · privatewateT'pUl"Veyor. · · ·-:· ·:_ .... _, .. ,·~.-,:_:·. ": .... ~ .. ~.·.:·,.J'/t";,?:.'<'1 :_'. :·: __ .:',-?,i:~, ... · .. :::,~f'.:'::.,)f"<1 ·:·.· : , . . . . ,_". ' . . : •. : : '•'.: ... :·_. • . • , ~" , . :r: '.." ~ , i~, • -" ~'. Annexation or.Boundary Review Board (BRB}·approvaLwill,be necessar:y,.to . .provlae,seivlce, ,· '·.1: ,. " . . -: . '<' . . .. ,. ::,i:-·,.<.·::'· .. ' .. f, :·-: •.. ···.:··~· ••. ' •·,· ;~ ,\ '-~·.· ',:. \ . Water Is available at the rate of flow and duration Indicated ,below at ~9 less th~; 20 p~i)m~~~@:t~~fil:I~ . fire hydrant~ feet from the property (or·as marked on the _attached,niap): .. s: .. ·· ' · · '' Rate off/ow at Peak Demand Duration·, .. D less than 500 gpm (approx. gpm) D. lesstt\anl'hour' . QCT;;Q 1 200] D 500 to 999 gpm D l·hour to2 hours. ' ·· °' ' • ,, ' ~ 1000 gpm or more ~-2.ho.urs'or more. '·.· · h11~v.'vVl~I~ fl' . ~ ~~l;u;:~~~fof g:: . ~her .·. · .. : ·. , : /AND ~SE .SERVICES OR (Note: . Commercial building permits which Includes multlf~mlly stru,ctur~s re9~'1rl._··JD. ·.·!./J,,i olt:t ··. __ ff:\·.. .· ._.0.. . . : calculation.) . . : · · ·• ·· ·· ·. ': r. Dft;;,-IQ;'" :y .·, PY Water system I~ not capable of providing fire flow. . · . · . . · · · < . · · . ~ : i. · D b. 5. ~ a. OR D. b. . . . · .·. · _ .. ·· .. · · ;, L03Rt0$g Water system has certificates of water right or water right claims sufficlent.to·provide service. -· · . ~ . . . ' .. Water system does not currently have necessary water rights or water right cla.lms, Comments/condltl~ns: D.E. + Easements to District required. Current additional fees:. $3iOO·Gf'.C per ERU :+,te:tdla~e :;: ::, . 1' meter$1300 or 3/4'~ drop fee $450 · I certify that the above water purveyor information Is true. This certficatlon shall be valid for um from,date·of signature. · KING COUNTY WATER DISTRICT #90 LESTER PIELE RENEWAi; FEES: W/!N'tyear.$50.00 . ' . s:::~:~:::ENT ~~ . · AITE::::::o:i25.00 Title Signature · . Date Z:\Water Availability Certificates\Water Availability\Evendell -US Land.doc '.· =- (® King County :ODES .. DEPARTMENT OF DEVELOPMENT AND ENVIRONMENTAL SERVICES , . This' certificate s.ttie Seattl~'King County Department of Public.Health and . the Department of Deveiopmerit and· , . Environmental Services with"information'· . necessary to evaluate a~ve_lopment .. ·: .: proposals. · ·:.:-,,',' ·.;:,.. . · · : · 900 Oakesdale Avenue Southwest Renton,c Wa .98055-1.219 .:~:·< .. '.:;:,:: .· ·.;. ·:.:):\·· .. -.-.··:·~ ' . .., - • ' : ,. • : • . . ' .• i l','.'.;.~. -.:.-·'; .:: • ..,,~. -~~.':..• .. ,,: .. , ; >, ;.._.; . King County Certificate qf Watef:4\va'jla'lji.lity.:;,:·:. ··.··.· .: .:. • • ',· • 0 \t' .,_, .,'. '\,'-:":,: :i\·;_~-·; ·:</.,:,\\'·:·_.,,;:; . -. ,• '. ;, -----~_._-.,..,;,.=~~_._~--'--'-'-,'--"'--'-" ~=J:··:·· :t})t,i}}~·;;:':1 , Do not write In this box number D · Building· Permit D Short Subdivision ~Preliminary Plat o(PUO . D Rezone or other~-'---~~-'-'-'- Applicant's name: U.S. Land Development Associates Proposed-use: ·Single Family Residences (Evendell -75 lots) ... . . . . . • ~' >! :,· t ,;. ,· ,.•I Location: Between 156"' & 160"' Ave SE.-South of SE 136'" Street · !13 acres.l (attach .map and lega·I des.~rlptlon ifnecessa'r:y) · c'• ,,.. . .··.:r· . ,, '" --: .... 'f -' Water purveyor information: 1. D a. 2. OR ~--b. -~·· a. OR Water will be provided by service connection ·only to.an existing (slZe) ·water m~lii that Is frcintlnc{the site. ._ . . ·. '·.. ' • : '. ' .:: . ~ _: .... ,· ·.' . -~-. ! Water service will require an Improvement to ,the water system of: D (1) feet of water main to reach the site; and/or . . . .. . -. . . [(2) The.construction of a distribution ·system oii'the site; aDd/or... . . ; .. . ; ·c,, · .... : · .. , .· . [1(3) Other (describe) D.E. Required· offslte .Improvements. Specific reg,' will be.determ(rjei;I In pfelfmlnary requirements meeting. "· · · · . ·,.: ' . . . . . , ... ·,:··i:::~' -_ ·.:_ .. _ •\ The water system Is In conformance with a County approved water coinprehenslve'plan:· . · .. '\,. ,.· •~ . /' '•:,,, . 0 b. > ' -. :_ . , . . -· -'." ·.· ·,',,. , '::, '::,,' ,.:_._:· \: :_,::·. r,<'.'·_.·'__::,,.>}\tf •. \:(, .··-:,. , . .: .. ,: The.water system Improvement Is not In sonforr:nance,wlth ~ .. ~gunty,:~pproved:water,:coniprehenslye,•: "•::· :.. · , . plan and will •require a water comprehensive plari am~hdr'nent.'(This' ~a~ caus~;a ~~l~ylil),ISs(iarife]ofa perm.I!'~( , \,, · approval). . ·. . i, ·. , . , ,.) . ; .: :, •' ·.' ei,,;, ·,,;:}\'.'.;,····\::::.:,) · '\ 3 .. -~-.. a.· The proposed projectlswlthin the corporate·Umlts ot.the,dlstrlct, orhas been granted Boundary::Revlew·-Board : .. approval for extension of service outside the district or·clty, or ls.within the•Coun('/.apprcived s~rvice:.area of'a· · · .. private water purveyor. · • '.:: · · · :: ,: : :>. • · · ~ · · OR . :. . . . . . . . : ,.<·:: .: .. : ... ";'· ... ··.~./·.<.,, .... : o b. Annexation or Boundary Review Board (BRB) approval.will be·necessar:y.to.provlde service;-,:,-. ' ,~ .. ' · ::. . · ,, \ · . -: . .. ,, ... · .-: . · ,·: :. .. -~·-:\••·"·· ','._ ·;2 ,i'=~·;. :." .. 4. ~ a. . Water IS available at the rate of flow and duration lncllcatea below·at no less,tha~· 20 p§(~!=!~-Ftt,~,t,\!a~ fire hydrant illQ feet from the property (or as marked on the attached map):." . ·,. · ,· · · .· ·:. RateofflowatPeakOemand Ouratloni ' D less than 500 gpm (approx. gpm) ,D lesst~an lhour'.' ... :OCT 91 2003 o 500 to 999 gpm D 1·hour to 2 hours ~ 1000 gpm or more ~ 2.hoursor,more.-.. · 'r11,1\i0:\,1JtJIVI 1 ·, · ~ ~~1;u;:~~~fof 9°:mm ~her . : , }AflJD !JSE.SERVl<;:ES (Note: Commercial building permits which Includes multifamily structur~s r~u.lr~ pai& o.t,:'·:: :~-~ · calculation.) . . · . : .,.,;_:¥,~·&J.·,,~,~py Water system Is not capable of providing fire flow. · · · , · . ; .'. · · . . . . . . , .: ::' L o:s Rt-: 0 3@ :, Water system has certificates of water right or water right claims sufflclent.to·provlde service .. ~ . ' OR D b. 5. ~ a. OR D b. Water system. does not currently have necessary water rights or water right cla.lms. Comments/condltl~ns: D.E. + Easements to District required. Current additional fees: $:3200 GFCp~r-~Rl;J .+b~ctrarge · 1' meter $1300 or 3/4'! drop fee $450 I certify that the above water purveyor Information is true. This certification shall. be valid for 1 year from,date of signature. KING COUNTY WATER DISTRICT #90 LESTER PIELE RENEWAL FEES: W/!N' 1 yeaf.$50.00 .·' Agency name Signatory na/ . ·AFJER 1 year $125.00 SUPERINTENDENT ~/'~ 9/18/2003 . . · , · - Title Signature . Date Z:\Water Availability Certlficates\Water Avallability\Evendell -US Land.doc 0, KlngCounty .. ... Department of Development and Envirorunental Services 9000akesdaleAvenue p· o· t • t R • t Renton, WA 98055-1219 Ire IS fIC eceip Fire District#--~-$'~---- Name of Project/ Proposal __ .=Ft.::....:.,lle>J"""'"'O"'E~L-=L=------------------------ Location of Project/ Proposal ~,vff. ,f 6i: 1:1, C-s;r .i6T1,wW ~.t"~ sc t:1-/bt'.t<Av,c, St:• (Address, parcel number, tax account number, legal description)" *One of these required for processing of application ~ 7il l' :,;'.d,~ /.J,()1, /St;,b/}111[~£ (/'/z.JO~-fozz) sf /~ SEC ______ _ Z3 TWN ______ _ RNG. -~t)~S°~---KROLLPAGE __ l!J_l_l __ _ Name of Applicant /J, .S. LA,.JLJ IJ.e. vELQl"µt'NT A"oe/ATE;S do ,,t/;:.-rJTvrr./o"' t)b!E~fM£Nr S'EJZV,a:."S Address of Applicant Z z l. 17 -8 ° /)tr. .SF. , 1k 7':11!'1.L ,, M4 9f/J z / Telephone Number &/zr)L./-fl, -Ub.3 Description: Type of Project/ Proposal Check appropriate box(es) 0 Apartment/ Multifamily 0 Commercial / Industrial DRetail 0 Residential: Single Family Residence DDuplex M Subdivision 0 Short Subdivision / Short Plat ®Rezone 0 Conditional Use 0 Unconditional Use 0 Planned Unit Development 0 School / Classroom OOther (describe)------------------------------- 0 Storz couplings required on Fire Hydrants Issuance of this receipt does not imply an approval, disapproval nor review of referenced project/ proposal. This re~~J~ shall be valid for 30 days from date of signature. ,~, ~ ~ 'Afdt>. ii-JS: --1M. }~{ s (_ c_ ~ncy Name Si n tory Nam ~ R {)!J_~ ~4~ . lKXC ·o15C5!1''-'o Title Date Distribution: White: Applicant (see below) Yellow: King County Building Services Division Pink: Fire District Note Applicant: at the time of application to ODES the white copy .must be presented with project/ proposal submittal. 0178 (Rev. 9/97) OCT O 1 2003 Fire District: mail yellow copy to: . King County i'l 11 fo, vVu1~ 1 r Building services DivisiohANO USE SERVICES 9000akesdaleAvenue fE'nlE COPY Renton, WA 98055-1219/r' U Attn: Fire Engineering . ' ............ .. Jesse Tanner, Mayor September 22, 2003 Michael J. Romano Centurion Development Services 22617 g•h Drive SE Bothell, WA 98021 <CIT~F RENTON Planning/Building/Public Works Department Gregg Zimmerman P.E., Administrator SUBJECT: SANITARY SEWER AVAILABILITY FOR EVENDELL 75 LOT PLAT REQUEST FOR CONFIRMATION OF CERTIFICATE VALIDITY Dear Mr. Romano: In response to your letter of September 17, 2003, we have reviewed the proposal of the plat through the County process. We have determined that the availability initially provided for this project, dated June 15, 2001, would still be valid if you are to proceed with a major plat change process with the County. This availability will remain valid as long as a new formal plat application is not required. Your current availability was extended by letter dated January 15, 2003, and is currently valid through January 15, 2004. Jfyou have not been able to finalize the preliminary plat process with the County by that time, then you will need to request an extension prior to that date. is letter, please contact me at(425) 430-7212. F~lE COPY LOSR€osg R1:c,::n,1::,.. .. H:\File Sys\WWP. w'asteWater\WWP·03·0000C~rrespondance. Wastewatei\davec\Sewer_Avail_Evendell_Letter2.doc\DMC\tb. 1055 South Grady Way-Renton, Washington 98055 . RE N T 0 @ Thispapercontains50~recycledmaterial,30%post~nsumer AHEAD OF THE C~RVE .. Jesse Tanner, Mayor June 15, 2001 Michael J. Romano Centurian Development Services 22617 -81h Dr. SE Bothell, WA 98021 <CTIT~F JRJENTON Planning/Building/Public Works Department Gregg Zimmerman P.E., Administrator SUBJECT: SANITARY SEWER AVAILABILITY REQUEST-EVENDELL PLAT KCPID NO 142305-9009 AND PORTION OF 9022 -SE 136™ ST AND 158™ AV SE Dear Mr. Romano; This letter shall serve as a supplement to the sewer availability request form dated June 15, 2001, for the subject property. Sanitary sewer service is currently available to the property, bl!! requires an extension of sewer to be served. Our analysis at this point indicates that this development will need an extension of approximately 1300 linear feet of I 0-inch main to get to the site. Installation of 8-inch main within the development will also be required. Our analysis also indicates that there is a potential to serve this lot by gravity; but a lift station may be required in order to meet all the design requirements. The actual method for service can be determined at the time you begin your engineering process for this plat. The City's Economic Development, Neighborhoods and Strategic Planning Department have also reviewed this plat. This plat is generally in compliance with the density and as such is acceptable to the City. In order to receive.sewer service from the City the plat must also be develope\l as detached single family and the property owner(s) will be required to execute a covenant to annex form. You also· must be aware that the City will re-review the general provisions of the plat once you resubmit with more exact information such as wetland and road right-of-way information. . . \\CITY_ OF~ RENTONIRENTON\CENTRALISYS21DEPTSIPBPW\DIVISION.SIUTILITIE.SI WASTE. WTR\davec\ I 055 South Grady Way-Renton, Washington 98055 @ This p?per contains 50% recycled material: 30% post consumer SANITARY SEWER AV .... ·e CITY OF RENTON JOSS S Grady Way, Renton, WA 98055 Phone: (425) 430-7200 Fax: (425) 430-7300 TO BE FILLED OUT BY APPLICANT: Date of Request .s/~ Applicant's Name: V.5ft:;,1::~~/ld~ Phone No~}4/'h-z&,;? Mailing Address: 0~-........._1/,__~--~.#Yt?e~ ?'7£,r7-~;e: City ~ I State u/,4-Zip Code 9.8&2/ Check one: Proposed Single Family Home Existing Single Family Home On Septic/ ~ Other (Specify) M;y,,& 2d;fJ2/ll'/:iJ;»i • Location/Address: _;5,u;yp a;"~jr;~4(' /5l,Q!,{v_k ,/:~ King County Tax Account No: $ai?5:= ";i}:2,:>f?./&,tf,c-'7PZ7-: Legally Described as: ~,,z~ THIS APPLICATION SHALL INCLUDE A COPY OF THE PROPOSED SITE/PLOT PLAN. INFORMATION PROVIDED BY CITY: L 2. D Sanitary Sewer Service will be provided by side sewer connection only to an existing ___ size sewer main located within -------------------------- City records show a side sewer stub to the property D Y D N or D Sanitary sewer service will require an extension of approximately ------------- or D of ___ size sewer main located within-------------------- The proposed development lies within ------------service area; therefore, the applicant shall contact The District/Agency at (phone) for sewer availability. See anached lener dated --------------------------- Payment of all applicable system development fees: (Fees are subject to change without notice) -System Development Charge: -Residential building sewer permit: -Latecomer~pecial asse,::nt fees: ~~ _M'E.,g 2//P per single family residence per single family residence (over) ,_ ' _.!, Sanitary Sewer Availability Form Page2 3. 4. 5. 6. 7. 8. 9. )S D ~ D or)!(_ '?- or D J1( or D Reference data -~~-"'~'-'--===~~"'--1'"~==;;:yp:,.,_, ...... ':,"'--------------- Applicant shall abandon the existing septic system in accordance with Section 1119 of the current Uniform Plumbing Code and Section 4-6-040.1.6 of the City Code. Customers connecting to sanitary sewers in King County, including Renton_'s Sewer Service Area, after February I, 1990, are subject to a sewage treatment capacity charge. The purpose of this King County charge is to pay for building sewage treatment capacity to serve newly connected customers. Single- family customers pay $10.50 a month (billed by King County as $63 every six months) for 15 years. At the customer's choice, this fee may be paid to King County as a lump sum of $1,089.40. This fee is in addition to the monthly charge for treatment that Renton is required to collect and pass to King County. The Renton portion of the Wastewater Utility Rates for customers outside the city limits is 1.5 times the standard rate for customers inside the city limits. (City Code section 8-5-15C) The proposed project is within the corporate limits of the City of Renton or has been granted King County Boundary Review Board (BRB) approval for extension of service outside the City .. Annexation or BRB approval .. e necessary for the provision of sanitary sewer service. The sewer system improvement is in conformance with a County approved sewer comprehensive plan. The sewer system improvement will require an amendment to the Renton Long-Range Wastewater Management Plan. The sewer system improvement will be within an existing franchise from King County allowing the installation of facilities in the County Right(s)-ofWay. The sewer system improvement will require that Renton obtain a franchise from King County to install the facilities in the County Right(s)-ofWay. CONDITIONS OF CERTIFICATION: I) It is the responsibility of the owner/developer to verify, by an engineering study, whether it is possible to connect by gravity line to the existing City sewer system (a private lift station may be installed, but is not desirable). The City may require, at it's option, the verification to be in the form of a letter signed by a professional civil engineer. 2) When new sanitary sewer lines are installed, the City typically installs or requires to have installed stub-outs to the property line. This is done as a courtesy to the property owners. The City does not guarantee a stub for all properties nor does it guarantee the condition or location of the stub. It is the responsibility of the owner/contractor to have an approved connection from the building sewer to the City's sewer main. If there is a stub, it is in good condition, and the owner/contractor can locate it, then it is available for use. The determination of condition of existing sanitary sewer stubs shall be the sole responsibility of the City and the City's decision shall be final. If the stub is broken or the City inspector dctcnnines that the stub's condition is not acceptable, it shall be the owner/contractor's responsibility to repair the stub, replace the stub at the existing tee, or to install a new stub and tee directly into the main. The method of repair/replacement to be dctennincd by the City's inspector. I hereby certify that the above sanitary sewer infonnation is true. This certification shall be valid for one year from date of signature. (Fee infonnation is.sub·ect to change without notice). TILITY _b~~faf-,q=.-- Wastewatcr Utilit:i::::;~: Name ~, ffoL -L Dat , /\'.rwavail.doc FORM DC905-400t 11/20/00 LEGAL DESCRIPTION PARCEL A • Mair Property THAT PORTION OF THE NORTH 1/2 OF THE NORTH 1/2 OF THE N0RTHWEST 1/4 OF THE NORTHWEST 1/4 OF THE SOUTHEAST 1/4 OF SECTION 14, TOWNSHIP 23 NORTH. RANGE 5 EAST, W.M. LYING EASTERLY OF THE EASTERLY MARGIN OF 156TH AVENUE SE AS DEEDED TO KING COUNTY BY DEED RECORDED UNDER KING COUNTY RECORDING NUMBER 1094243: EXCEPT THAT PORTION OF THE WESTERLY 199 FEET THEREOF. AS MEASURED FROM THE EASTERLY MARGIN OF SAID 156TH AVENUE SE. LYING SOUTHERLY OF THE NORTH 30 FEET THEREOF, AND EXCEPT A PORTION OF THE NORTH 1/2 OF THE NORTH 1/2 OF THE NORTHWEST 1/4 OF THE NORTHWEST 1/4 OF THE SOUTHEAST 1/4 OF SECTION 14. TOWNSHIP 23. NORTH. RANGE 5 EAST. W.M. KING COUNTY. WASHINGTON. DESCRIBED AS FOLLOWS: COMMENCING AT THE NORTHEAST CORNER OF SAID NORTH Y, OF THE NORTH Y, OF THE NORTHWEST QUARTER. THENCE SOUTH 00°07'38" WEST. A DISTANCE OF 30.01 FEET TO THE SOUTH LINE OF THE NORTH 30 FEET OF SAID PARCEL: THENCE NORTH 88°17'07" WEST ALONG SAID SOUTH LINE, A DISTANCE 597.58 FEET TO THE POINT OF BEGINNING: THENCE CONTINUING NORTH 88°17'07" WEST. A DISTANCE OF 25.69 FEET TO THE EASTERLY MARGIN OF 156TH AVENUE SE: THENCE SOUTH 00°09'25" WEST ALONG SAID MARGIN, A DISTANCE OF 25.09 FEET TO A POINT OF CUSP ON A CURVE FROM WHICH THE RADIUS POINT BEARS SOUTH 89°50'35" EAST, HAVING A RADIUS OF 25.00 FEET AND A CENTRAL ANGLE OF 91°33'35": THENCE NORTHEASTERLY ALONG SAID CURVE TO THE RIGHT. A DISTANCE OF 39.95 FEET TO THE POINT OF BEGINNING, CONTAINING 142.87 SQUARE FEET. SITUATE IN THE COUNTY OF KING. STATE OF WASHINGTON. TOGETHER WITH A NON-EXCLUSIVE EASEMENT FOR INGRESS. EGRESS AND UTILITIES OVER, UNDER AND ACROSS THE NORTH 15 FEET OF THE WEST 187 FEET (AS MEASURED FROM THE EASTERLY MARGIN OF COUNTY ROAD RIGHT- OF-WAY) OF LOT 2 OF SHORT PLAT NO. 878133. RECORDE;D UNDER KING COUNTY RECORDING NO. 8002250639. RECORDS OF KING COUNTY. WASHINGTON. ALSO TOGETHER WITH A NON-EXCLUSIVE EASEMENT FOR INGRESS, EGRESS AND UTILITIES OVER, UNDER AND ACROSS THE SOUTH 15 FEET OF THE EAST 22 FEET OF THE WEST 199 FEET. AS MEASURED FROM THE EASTERLY MARGIN OF SAID 156TH AVENUE SE. OF THAT PORTION OF THE NORTH 1/2 OF THE NORTH 1/2 OF THE NORTHWEST 1/4 OF THE NORTHWEST 1/4 OF THE SOUTHEAST 1/4 OF SECTION 14. TOWNSHIPS 23.NORTH. RANGE 5 EAST. W.M. LYING EASTERLY OF THE EASTERLY MARGIN OF SAID 156TH AVENUE SE. PARCEL 8 Nyblom Property THE EAST HALF OF THE NORTHWEST QUARTER OF THE SOUTHEAST QUARTER OF SECTION 14. TOWNSHIP 23 NORTH. RANGE 5 EAST, WILLAMETTE MERIDIAN, IN KING COUNTY. WASHINGTON: EXCEPT THAT PORTION OF SAID EAST HALF OF THE NORTHWEST QUARTER OF THE SOUTHEAST QUARTER OF SAID SECTION 14 DESCRIBED AS FOLLOWS: BEGINNING AT THE SOUTHEAST CORNER OF SAID EAST HALF OF THE NORTHWEST QUARTER OF THE SOUTHEAST QUARTER AS THE POINT OF TRUE'BEGINNING: THENCE NORTH 00°25'21" EAST 523.99 FEET ALONG THE EAST LINE OF SAID EAST HALF OF THE NORTHWEST QUARTER OF THE SOUTHEAST QUARTER: THENCE NORTH 88° 07'58" WEST 653.61 FEET TO THE WEST LINE OF SAID EAST HALF OF THE NORTHWEST QUARTER OF THE SOUTHEAST QUARTER: THENCE SOUTH 00°27'05" WEST 525.82 FEET TO THE SOUTH LINE OF SAID EAST HALF OF THE NORTHWEST QUARTER OF THE SOUTHEAST QUARTER: THENCE SOUTH 88°17'35" EAST 653.84 FEET ALONG THE SOUTH LINE OF SAID EAST HALF OF THE NORTHWEST QUARTER OF THE SOUTHEAST QUARTER TO THE TRUE POINT OF BEGINNING: EXCEPT COUNTY ROADS. F~LE COPY ® .. Certification & Transfer of Applicant Status Department of Oeo,ek>pment and Environmental Services 900 Oakesdale Avenue Southwest Renton, Washington 98055-i 219 206-296-6600 TIY 206-296-7217 Alternative formats available upon request Permit Number: FOR CURRENT OWNER: I. QAv,o II. l)N8to""1 . (print name) hereby certify that I am an/the owner of the property which is the subject of this application for permit or approval. If I am not the sole owner of the property. I certify that I am authorized by any and all other owners of the property to make this certification and transfer any an all rights I/we have to apply for this permit or approval to the person listep below. I, therefore certify that !{,11,vA<O £., ~,tJu,i.'( (print name) is the "applicant" for this permit or approval and shall remain the "applicant" for the duration of this permit or approval unless "applicant" status is transferred in writing on a form provided by this department. By being the "applicant," that individual assumes financial responsibility for all fees and will receive any refunds paid. f perjury under the laws of the State of Washington that the foregoing is true and correct. p/iffe:?-- Date Signed FOR INDIVIDUALS: I, fbLv'A.t.0 ,&!:. :5~cvql , (print name) hereby certify that I am the "applicant" for this permit or approval. I shall remain the "applicant" for the duration of this permit or approval unless "applicant" status is transferred in writing on a form provided by this department.· I accept financial responsibility for all fees associated with this permit .or approval and will receive any refunds. My mailing address is: {/, ~, lA,,J() l}eJJ;Jt:J/J/ilfBVT ~;,;,,<1-n;S · 7:b C£NTVC/~r,/ Ot..vFuJe,t;'t:Nr .<£1{V1c"1:.-s 2.Zb/7-8 st< p,e $t;; er penalty of perju under the laws of the State of Washington that the foregoing is true and correct. OR FOR CORPORATIONS/BUSINESS ASSOCIATIONS: /fl'l~;;ned I. . hereby certify that I am an authorized agent of . a corporation of other business association authorized in the State of Washington and that this business association is the "applicant" for this permit or approval and is financially responsible for all fees and will receive any refunds paid. This association shall remain the "applicant" for the duration of this permit or approval unless "applicant" status is transferred in writing on a form provided by this department. The mailing address of this. business association is: I certify under penalty of perjury under the laws of the State of Washington that the foregoing is true and correct. Signature of Applicant Date Signed IFU=CFPV~~ Check out the DDES Wei, site at www.metrokc.gov/ddes Certification & Transfer of Applicant Status lc-cer-trapstat.pdf 05/30/03 OCT O 1 ?nm KIM., CLiUI~ 1 Y LAND USE SERVICES FJlE coPY @ -~ ,.., NOTICE TO APPLICANTS: By law. this department returns all engineering and other plans to the applicant. If. however. you wish to authorize the department to return engineering and other plans directly to the engineer. architect. or other consultant for the limited purpose of making corrections. please designate below: @1 authorize this department to return plans directly to my consultant(s) for the limited purpose of making corrections. as designated on this form. CONSULTANTS: Centurion Development Services 22617 · 8ih Dr. SE Bothell, WA 98021 . ' Check out the DDES Web site al www.metrokc.gov/ddes Certlficalion & Transfer of Applicant Status lc-cer-trapstat.pdf 05/30/03 Page 2 of 2 • ,. ® King County Department of Development and Environmental Services Land Use Services Division 900 Oakesdale Avenue Southwest Renton, Washington 98055-1219 206-296-6600 TIY 206-296-7217 ... ; 1. ~ '---.J 'Ill_, 'l~ -. r r-------0-.j'i ~ Application foir1,.;;and Use Permits Alternative formats avai\able .. upon request Do not wn'te in this box ' . . .. ' . Date Received: Stam ,-!. ---------o""'oc-N-O""T=-WR-=---rr--E""'A--B--O""V""'E--T--H--IS"'"'o""1v_1 __ 0-=e=-R----------, . . . -. . . I (We)' requesi'the f~llowing permii(s) or approv'al(s): 0 0 ...:. .. ...! u 0 tl, Q 0 ~ 0 Q 0 0 0 0 0 Building Permit 0 Clearing ~ Grading Permit q . ·Temporary Use Permit 0 Binding Site Plan . ' " 0 Site. Developr)len) Permit . O Boundary Line Adjustment 0 Short Subdivision • , 0 Formal Subdivision -e.evl!,10,-/ O Urban Planned Development O Plat Alteration O Plat Vacation O Road Variance 0 Drainage Variance or Adjustment 0 Right-of-Way Use Permit 0 Shoreline Exemption 0 Shoreline Substantial Development Permit Shoreline Conditional Use Permit Shoreline' Variance·· ,,. Shoreline Redesignation Zoning Variance Conditional Use Permit Reuse of Public Schools Special Use Permit Zone Reclassification Site Specific Comprehensive Plan Amendment P-Suffix Amendment Special District Overlay Removal Reasonable Use Exception Public Agency & Utility Exception Period Review for Mining Sites '' -· ·~::1~r. PIW.ii>.e.o'~·-.··s~s(,v~V' , being duly sworn, state that I am the owner or ~ '01'''~\;""2 ,JI;, (print name) t p~ce.{cifir.@-gor~orat\on owning property described in the legal description filed with this application and ·'· /th<!I l:have·reyiewed the r.ules and regulations of the Department of Development and Environmental f,;. Sfr;vices (DDESi:~egarding the preparation and filing of this application and that all statements, answers 1/ ard information subpiitted with this application are in all respects true, accurate and complete to the best Ii\' of\my .knowledge and belief :{~l C,\' IJ;;. /,, ~ f l)ujing~t~};(.~ij.w\>!•:th1s ~ppilcat1on, 11 may be necessary for DDES staff to make one or mixe site visits. ~~ By._s1gning thi~ application form, you are giving permission for these visits. If it 1s rental property, the ( owner 't\'eregy;~gfees to notify tenants of possible site v1si~s. . ·" ·-·, · · ·,\. , ' ". r' • -~-' ' I \. . f I i.,"-': .... ~r..:)',i';\' .. , .. -:-·~ ; . '·'·"').:/',Q~o·?.''::,Tl'N!~~I/ I /, _ printed name . , ;:. s,gnatyre t:../ 0 L.l!N"fV{&,/ON (),Ol-l!:llil'M/!!)J1" :!(i}ZVilt."S . . 1 ZZCol"l-8 ,o, 0Jt:.. SC IJ. ~'-~ i2.£11t:J.of"l.(£NZ:.~«. mailing address corporation or company name city state zip telephone If applicable, state below. the name, address and telephone number of the authorized applicant for this application as shown on the Certification and Transfer of Application Status form filed with this ~~~z~i~1 :r. ~<fWJ,&vO d, lo, {>., C£NTv~·11"' p;.v . .S~v~c-'.!. ____ _ ,0, _Z_Z.fol 7 -a=_p~-S'.=C _____ _ name mailing address ~ telephone city state zip R ~,,.."" ., ,,... Check out the DOES We~ site at www.metrolcc.go~des Application fo~,iulse PE· s CICo·•PR-luppeor.pdyf 05/21103 U -U OCT O 1 ?nn-i Page 1 of 2 LAND U~t. Stf,v. For Formal Subdivisions only: Name of Subdivision _D_ry'ea._5'~--- Reg(stered Land"Surveyor Engineer () ' ( • L P.,,.J I) u)JD)l:!J.<>PM Ovt: ~ ,c. Developer Land Surveyor's Certification I hereby certify that the accompanying plat has been inspected by me and conforms to all rules and regulations of the platting resolution and standards for King County, Washington Signed: ,fJ{.~ Date: /(2 -2.Z.-D:3 • /271 '{ VA11.ey: Ave ~· ,£"L)(,I~,,<. ?f.f?~ Address and Zip Telephone Number Name _lJ 1/Z/!; • 1/S-t-~L,_M.1?1;11:n::~_'iiill Address and Zip · • . , ' ~me t:.t:>..tTvfl.l:.V.. t)1.-Vl!t<J1"1"1/!:1Vr $',ev:-ur ZZ.&:,/7 /3" i)#St." P,r,t.1:>t.. '71'Pl../ Address and Zip C lf'tr) -It{,-z~,3 Telephone Number Land Surveyor Seal Note: Application forms and submittal requirements are subject to revision without notice. \ -~ ·:I Check out the DDES Web site at www.metrolcc.gov/ddes App!ication for Land Use Permits lc-app-luper.pdf 05121103 Page 2 of 2 . ' ,. ' Evendell Plat Preliminary Technical Information Report Submitted to: King County DOES 900 Oakesdale Avenue S.W. Renton, WA 98055 Prepared by: Haozous Engineering, P.S. 14816 SE 116th Street Renton, WA 98059 Tel. (425) 235-2707 Fax ( 425) 254-0579 RECEIVED> June 15, 200 I OCT O 1 2003 .. ,u COUNTY LAND USE SERVICES ,, TABLE OF CONTENTS ··,, .. I. Project Overview ............................................................................................................... 1-1 2. Conditions and Requirements Summary ........................................................................... 2-1 3. Off site Analysis ................................................................................................................. 3-1 4. Flow Control and Water Quality Facility Analysis and Design ........................................ 4-1 5. Conveyance System Analysis and Design ............................................... : ......................... 5-1 6. Special Reports and Studies .............................................................................................. 6-1 7. Other Permits .................................................................................................................... 7-1 8. ESC Analysis and Design ......................... , ....................................................................... 8-1 9. Bond Quantities, Facility Summaries, and Declaration of Covenant.. .............................. 9-1 10. Operations and Maintenance Manual.. .......................................................................... 10-1 11. References ..................................................................................................................... 11-1 LIST OFT ABLES Table I. Description of Downstream Conveyance System ................................................... 3-5 Table 2. Existing and Developed Site Basin Conditions ..................................................... .4-2 Table 3. Summary of Performance Standards ....................................................................... 4-3 Table 4. Wet Pond Sizing Calculations .............................................................................. .4-11 Table 5. Summary of Special Reports and Studies ............................................................... 6-1 Table 6. Summary of Other Permits Required ...................................•.................................. 7-1 Table 7. Summary of Maintenance Requirements for Stormwater Facilities ..................... 10-1 LIST OF FIGURES Figure I. TIR Worksheet.. ..................................................................................................... 1-2 F 2v··M · ,gure . 1cm1ty ap ................................... _. ...................................................................... 1-5 Figure 3. Drainage Basins ........................................................... , ......................................... 1-6 Figure 4. Soils Map ............................................... _. ............................................................... 1-7 Figure 5. Downstream Conveyance System .......................................................................... 3-4 Figure 6. Stormwater System Design .................................................................................... 4-6 Figure 7 A. Flow Duration Curves for RID -East Basin ....................................................... 4-7 Figure 7B. Flow Duration Curves for RID-·west Basin ..................................................... .4-9 Figure 8. Erosion and Sedimentation Control Plan ............................ , .................................. 8-2 Figure 9. Site Improvement Bond Quantity Worksheet. .................. : .................................... 9-2 Figure I 0. Flow Control and Water Quality Facility Summary ............................................ 9-3 APPENDICES Appendix A. Downstream System Appendix B. Stormwater RID System Design Appendix C. Conveyance Calculations Appendix D. Hydrologic Model Documentation u I. Project Overview Project Description A summary of the Evendell Plat project is provided in the TIR Worksheet (Figure I). This preliminary technical information report (TIR) addresses the design of stormwater facilities and the offsite drainage analysis for the Evendell Plat project. The Evendell Plat project is a proposed residential development located within the Renton Highlands area of unincorporate.d King County (Figure 2). The proposal for development includes building 75 single-family dwellings on approximately 12 acres. Road improvements along SE I 36'h Street are also proposed. The proposed site plan is provided in Figure 6 of Section 4. Site Description The site is located within the Orting Hills subbasin of the Cedar River watershed (King County Department ofNatural Resources, 1999). The site consists of two basins. The topography of the east basin generally slopes from the northwest to the southeast (Figure 3 ). The topography of the west basin generally slopes from the east to the west. The elevation of the site ranges from about 494 feet (NAVO 88) in the north portion of the site to 456 feet in the southeast comer. The project is located east of 156th A venue SE and is bordered by SE 136th Street on the north and by 1601h Avenue SE on the east. Cover types on the site include a single-family residence, pasture, and forest (Photo I in Appendix A. I). A Class 2 wetland has been identified in the northeast portion of the site. Based on King County Soil Survey (U.S. Department of Agriculture, 1973) the site consists ofAlderwood soils (Figure 4). Drainage from an approximately 0.94-acre tributary subbasin adjacent to the west boundary of the easterly basin sheet flows onto the site (Figure 3 ). The easterly basin drains to a conveyance system along 160th A venue SE. The westerly basin drains to a conveyance system along 156th A venue SE. Both downstream drainage courses eventually discharge to an unclassified tributary of the Cedar River (King County Department of Parks, Planning, and Resources, 1990). Stormwater Design Under developed conditions, stormwater from the site and offsite road improvements will be collected and treated onsite to basic water quality standards. A combined wetpond/detention pond will be used to manage runoff in the easterly basin. A small wetvault will provide water quality treatment to a portion of SE 136th Street that bypasses the stormwater facility in the east basin. A vault followed by a biofiltration swale will be used to manage runoff in the westerly basin. Level 2 RID standards are required by the King County Flow Application Maps and recommended by Lower Cedar River Basin and Nonpoint Action Plan. Natural discharge locations from the site will be maintained at the outlet of the proposed storm water facilities. 1-1. Evmdd/ 1'1111 Pre/immary 17R-.!rme 200/ Figure I. TIR Worksheet TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 1 PROJECT OWNER AND PROJECT ENGINEER Project Owner: U.S. Land Development Associates, Inc. Address: Clo: Mike Romano Centurion Development Services 22617 8th Dr. SE Bothell, WA 98021 Phone: (425) 486-2563 Project Engineer: Ed McCarthy, P.E. Company: Haozous Engineering, P.S. Address/Phone: 14816 SE 116th Street Renton, WA 98059 (425) 235-2707 Part 3 TYPE OF PERMIT APPLICATION !ID Residential !ID Grading Part 2 PROJECT LOCATION AND DESCRIPTION Project Name: Evendell Plat Location: West of 16oth Avenue SE and bordered by SE 136th Street on the north. Township: 23N Range:5E Section: 14 Description: The proposal for development includes building 75 single-family dwellings on approximately 12 acres. Part 4 OTHER REVIEWS AND PERMITS 0 DFWHPA ~ Wetlands l&l National Pollutant Discharge Elimination System (NPDES) Stormwater Permit l&l Forest Practices Class IV General Part 5 SITE COMMUNITY AND DRAINAGE BASIN Community: King County Drainaae Basin: Lower Cedar River Watershed; Ortina Hills subbasin Part 6 SITE CHARACTERISTICS 0 River: NIA D Stream: N/A D Critical Stream Reach: N/A D Depressions/Swales: NIA 0 Lake: NIA D Steep Slopes: N/A D Floodplain: NIA ~ Wetlands: Onsite Class 2 Wetland D Seeps/Springs: N/A D High Groundwater Table: NIA D Groundwater Recharoe: N/A 1-2 Part 7 SOILS Soil Type Alderwood Slopes Moderate Part 8 DEVELOPMENT LIMITATIONS REFERENCE Ch 6 Water Quality Requirements Ch 5 -Flow Control Part 9 ESC REQUIREMENTS MINIMUM ESC REQUIREMENTS DURING CONSTRUCTION lg] Sedimentation Facilities ~ Stabilized Construction Entrance ~ Perimeter Runoff Control lg] Cover Practices lg] Construction Sequence Part 10 SURFACE.WATER SYSTEM Erosion Potential Erosive Velocities LIMITATION/SITE CONSTRAINT Onsite treatment -basic standards Level 2 RID standards MINIMUM ESC REQUIREMENTS AFTER CONSTRUCTION ~ Stabilize Exposed Surface ~ Remove and Restore Temporary ESC Facilities lg] Clean and Remove All Silt and Debris ~ Ensure Operation of Permanent Facilities Basin Water Qualitv Treatment Detention East Wetoond/Wetvault Level 2 Pond West Biofiltration swale Level 2 Vault Facility Related Site Design Considerations: Reference Facility Design Consideration 1-3 Part 11 STRUCTURAL ANALYSIS 00 Rockery> 4' High D Berms > 6': N/A Part 12 EASEMENTS/TRACTS D Drainage Easement: N/A D Access Easement: N/ A D Native Growth Protection Easement ~ Sensitive areas ~ Stormwater tracts Part 13 SIGNATURE OF PROFESSIONAL ENGINEER . I or a civil engineer under my supervision have visited the site. Actual site conditions as observed were incorporated into this worksheet and the attachments. To the best of my knowledge the information provided here is accurate. Si necVDate 1-4 :.,_J ... y·; .. ::, :····· SOURCE: USGS 7.5 x 15 Minute Series -Renton, Washington SCALE: 1 :25 000 TITLE Figure 2. Vicinity Map PAGE OATIS 1-o 01/03/01 UI ' ,c . ::, i:? :::J 11~- 0 u _./ [ { F:""";_ 1;· i_ ~e (" ~ \.. \, ""'..,,, '{.. l r,......, ~ G ~~ ( . ( L l~ 1 i ~, 2x: \ "', =111r ~ 'i'-.. I ,.,.,,.. \ I } , [ """ ~ ,m 0 200 "" oci 111\ D . r··:·1 \.,. ... u.J o> ·---. <I: '"~~·-1(_" .~J\L.-- ~,.1 'r-·"· \.)~ .,>V >s:: ~t") ;p,.O t [ '//[ i ......,..,., ..... • \.,,,a, .• , f.. 1 J I.I r EVENDE~~ QSt' \~ j ~9.3 AC) ,) ) I Haozous Engineering I CIVIL ENGINEERING I 14816 SE 116TH ST, RENTON, VA 980,9 EVENDELL PLAT I [ I [ lp D PROJECT NO. I ·-_________ _:2~-~~T,_2_10_, __ I :'":" __ _!JM -~ 1/os/0_1 __ 1 I I II DA 'TE NO. RE\'1SION BY . E'JM C ,;os;o,<:JF ---·--·--·--··· \SHEET I Figure 3. Drainage Basins 1-6 SCALE: 1 :24 000 1" = 2,000' PAGE Figure 4. Soils Map DATE 1-7 01A'.l3/01 2. Conditions and Requirements Summary A summary of conditions and requirements for the project are presented in this section. The following is a summary of core and special requirements from the 1998 King County Surface Water Design Manual: Core Requirement 1: Discharge at the Natural Location The natural discharge locations from the site wilf be maintained at the outlets of the proposed stormwater facilities. Core Requirement 2: Off-site Analysis A Level I downstream drainage analysis is presented in Section 3. Core Requirement 3: Runoff Control Level 2 RID standards are required for the site. Core Requirement 4: Conveyance System The onsite stormwater conveyance system and offsite improvements will be designed to convey the 25-year storm. Core Requirement 5: Erosion/Sedimentation Control Plan Proposed erosion/sedimentation control procedures are described in Section 8. An erosion/sedimentation control plan (ESCP) will be developed for the project during engineering design. Core Requirement 6: Maintenance and Operation The proposed systems for managing stormwater will be maintained and operated by King County. Recommended maintenance activities are provided in Section 10. Core Requirement 7: Bonds and Liability Bonds and liability requirements will be developed for the project during engineering design (Section 9). 2-1 Evoufdl Plat Preliminary 11R-June 2001 Core Requirement 8: Water Quality As described in Section 5.E, basic water quality standards apply to the site. A basic wetpond will provide water quality treatment for stormwater collected from the site's east basin. A biofiltration swale will provide water quality treatment for stormwater collected from the site's west basin. Alternatively, a wetvault may be used to treat stormwater collected from . the site's west basin. A small wetvault will provide water quality treatment for stormwater collected a portion of road improvements along SE 136th Street. Special Requirement 1: Other Adopted Area-Specific Requirements The site is within the Cedar River Basin. Basin-wide requirements have been recommended by the Lower Cedar River Basin and Nonpoint Action Plan that apply to the site. These requirements are covered by the 1998 King County Surface Water Design Manual Applications Maps. Special Requirement 2: Delineation of 100-Year Floodplain The site is not within a I 00-year floodplain. Special Requirement 3: Flood Protection Facilities The project does not contain nor is it adjacent to a flood protection facility. Special Requirement 4: Source Controls Source controls are not proposed for the development. Special Requirement 5: Oil Control The proposed development does not meet the definition of a high-use site requiring oil control. 2-2 Evouldl Plat Preliminary T1R-June 21JOJ 3. Off site Analysis The site and project area are in two separate basins. The majority of the site is in the easterly basin. Topography in this basin slopes primarily from the northwest to the southeast towards 1601h Avenue SE. A smaller portion of the site flows the west. This includes the northwest and southw~st corners of the site, as well as a portion of proposed road improvements along SE 1361h Street. These portions of the site flow to the west towards 156th Avenue SE. _ A downstream drainage analysis for the site, including drainage routes along both 160th Avenue SE and 156th A venue SE, is presented in this section. The drainage courses from the site were assessed on O I /05/0 I. Moderate rainfall occurred during the morning prior to the site visit. The downstream conveyance system is described below and illustrated in Figure 5. Further descriptions of downstream structures are summarized in Table I. Upstream Drainage Drainage from an approximately 0.94-acre tributary subbasin adjacent to the site's western boundary sheet flows onto the site's easterly basin (Figure 3). Runoff from areas north of the site is collected in the roadside ditch along 158th Avenue SE (Location 2 in Figure 5). Runoff collected in the ditch on the west side of 1581h Avenue SE is conveyed to the east through a 12- inch diameter culvert (Location I) under the cul-de-sac of 158th Avenue SE. The culvert at Location I also conveys drainage from a section of ditch along the north side of SE 1361h Street (Location 30). The 12-inch diameter culvert discharges to an earth-lined ditch on the site's north boundary (Location 3, Photo 3 in Appendix A. I). Segments of the ditch show signs of minor erosion. The northerly ditch also collects runoff from the roadside ditch on the east side of 1581h A venue SE and from properties to the north. The vegetation and dimensions of the northerly ditch change as it proceeds from west to east (Locations 4 and 5). At the northeast comer of the site, a ditch on the west side of 160th Avenue SE joins the system. The system subsequently jogs around a utility box (Location 6). The ditch continues along the east boundary of the site (Location 7). No scouring or erosion was observed in the grass-lined ditch along this segment. The road embankment on the west side of 160th Avenue SE is steep, but stable. A side channel from the onsite wetland merges with the roadside ditch at Location 8 (Photo 4 in Appendix A. I). A small amount of flow was observed exiting the wetland at the time of the site visit. The ditch continues along the east boundary of the site to the site's southeast corner. Downstream Drainage Course -160'h Avenue SE Upon leaving the site's southeast comer, the grass-lined ditch continues in a southerly direction through 12-inch dirup.eter driveway culverts (Locations 10 through 13, Photo 5 in Appendix A.I). At a distance of about 660 feet from the site, a 12-inch diameter concrete pipe conveys drainage to the east side of 160th Avenue SE (Location 14 ). The site comprises approximately 17 percent of the tributary basin area at this point in the drainage system. Drainage is then conveyed through a 24-inch diameter CMP driveway culvert with a crimped end (Location 15). From Location 15, drainage is conveyed through a short section of ditch with accumulated sediment 3-1 Evendd1 Plat Preliminary 17R-June 2001 (Location 16). At a distance of about 860 feet from the site, drainage flows through an 18-inch diameter pipe at the residence of 14028 -160th Avenue SE (Location 17). A past drainage problem (Drainage Complaint No. 97-0423) was reported at this location. The complaint was not available but was related to overflow from the roadside ditch (Appendix A.2). The 18-inch diameter pipe discharges to an earth-lined section of ditch (Location 18). Minor erosion was observed at the outlet of the 18-inch diameter pipe. At a distance of about 1,000 feet from the site, drainage' flows away 1601h Avenue SE to the east, among trees on a forested parcel (Location 19). The channel is somewhat flat and braided after leaving the roadside ditch and passes through a ponded area (Location 20). The channel then becomes more well-defined (Location 21) and enters a 12-inch diameter pipe (Location 22) located near a horse corral. Drainage is then conveyed through a 12-inch diameter driveway culvert (Location 23) and then to an open channel. The open channel flows along the north boundary of residential lots that are along SE 142"d Place. A segment of the channel has been reinforced with concrete blocks (Location 24). Drainage then enters an 18-inch diameter pipe that has a trash rack and concrete headwall inlet (Location 25). At Location 26, the channel turns to the south and has significant bank erosion at the bend. The site comprises approximately 9 percent of the tributary basin area at this point in the drainage system. The channel then flows down the hill (Location 27) towards SE 144th Street. A past drainage problem (Drainage Complaint No. 97-0206) was reported at Location 25 (Appendix A.2). The resident at 16046 -SE l 42"d Place has had problems from runoff in the channel along his property. The 18-inch diameter pipe has likely been installed since the complaint was filed to reduce groundwater seepage from the ditch that was apparently compromising the performance of the homeowner's onsite sewage treatment system. The homeowner also stated in the complaint that he maintains the ditch long·the north and east boundaries of his property-by removing accumulations of debris and sediment. King County investigated the problem for the Neighborhood Drainage Assistance Program. Downstream Drainage Course -1561h Avenue SE A break in grade approximately 250 feet west of the intersection of SE 136th Street and 158th A venue SE divides surface water flow to the east and west. From the grade break, drainage flows west along a shallow grass-lined ditch along the north side of SE 136th Street (Location 31). Road improvements end about 375 feet west of 158th Avenue SE, at.which point the roadside ditch discharges to a grassy area in the road right-of-way (Location 31 ). There is no distinct flow path in the road right-of-way and drainage likely reaches the ditch along 1561 h Avenue SE by sheet or shallow flow. At the intersection of SE 1361 h Street (Location 33, Photo 6 in Appendix A. I), the earth-lined ditch along 156th A venue SE flows to the south. At a distance of about 150 feet south of SE 136th Street, drainage enters a series of Type I catch basins connected by segments of ditch and 12-inch diameter pipe (Locations 34 through 52). No signs of capacity problems were observed along the drainage route at these locations. At Locations 35 and 3 7, leaves and other debris have accumulated, presenting the potential for plugging downstream sections of pipe. 3-2 Evmddl Plat p,./iminary T1R-June 2001 At Locations 42 and 43, drainage from SE 138 1h Place enters the conveyance system. Runoff from the southeast comer of the site sheet flows towards the backyards of homes at the end of SE 1381h Place. Runoff from this area of the site eventually drains to the conveyance system along SE 13g'h Place. A past drainage problem (Drainage Complaint No. 97-0107) was reported by the resident at 15641 SE 138 1h Place (Appendix A.2). Based on King County's record, the complaint was related to a change in drainage pattern due to a broken culvert at the cul-de-sac (Appendix A.2). At Locations 46 and 47, drainage from SE 139th Place enters the conveyance system. Downstream from Location 52, a grass-lined ditch conveys drainage to the south along a pasture (Location 53). At the lower end of the pasture (Location 54) the ditch flattens and it appears that high flow rates could flow onto a portion of the pasture. At Location 55, drainage enters a 12- inch diameter pipe. A past drainage problem (Drainage Complaint No. 97-0318) was reported at Location 55 by the resident at 14038 56 1h Avenue SE (Appendix A.2). The complaint is a claim and was not available from King County. Based on King County's record, the complaint was related to flooding due to a plugged culvert (Appendix A.2). Downstream Drainage Complaints Drainage complaints along the downstream system were investigated at King Coupty Water and Land Resource Division. Drainage Complaint Nos. 97-0423, 97-0206, 95-0107, and 97-0318 are along the drainage route and are described in the narrative above. A map showing the locations of residents that filed drainage complaints is provided in Appendix A.2. Copies ofregistered drainage complaints are listed in Appendix A.2. A summary of the drainage complaints is provided in Table A.I of Appendix A.2. 3-3 Evouldl Plat Preliminary 17R-June 2110/ S.P. 976093 . el --=~ r" f ' 4Ti' -···· ' " .. r~-~ '" -" . . . 11 -· -""' ! ! ~ I~ ... 3. ~4e l 7 f"'~ I!! u ~1~ Si ' , !, : . I .f,t~ (2) e 6@@) 8 g ' t ' e~. . . ... ---~· C -• -. 1;1 ·--I I 4 · /f !i . I I ea I ... / '® .. (I) l .. I= __ 2 ~1a 14 i di 11.l QI.Mn :: rot r-----1 ® ----f-'H "' ----t-• [)» R •s e ® @) ,. ··~ =-, __ i . . . , ... ~. LEGEND Culvert Ditch ' • lot,.51 I ~ 31 :1 ··1t.~,,~ ,. iT 1 •. Ir@, : _@ fj) -® !. I Catch Basin Jiu • 1® @ ... • KD @~ ., • ... S.P.8781\3 © 1,;,Ac. " • SheetFlow ~ Location ID ® sS.E. 135TH ST~ • -.. 'ii • • ! I' 3 a3 ! ~ = t" ,.. ~ 4 c s 1 : ' Cedar River :. I = ... 2 rir-,.+-r+wi-0 0) @s ~ ~ '1 ~;ii i 1~; ;;'~ 1 Watershed 7 • •. ~ ... _ -t~,.4~ . . ..J to ,,.,. ~---· t .. I _ ·" ( RENTON AVE.) 1 .stl sS.E. 136;.H · n" """' '-'i-----.-:~:·• '.'l.!t 0···~ I 0-ST. T .-~-= ... , I SITE I Tm.E PAGE 3-4 ~. • i '1._::::.g_..L, r.., I :,.• ;;J i -~G)'. -c.sF!VE!<!gA .1; . !eE CRE ~: \®: 8 . ·• . I ! ,.... .. '"'. --, - It /j II 2 SCALE: 1" = 300' Fl .... - • S.E. 137' I .. I OI IO ~----- ... 6/11/01 Table 1. Description of Downstream Conveyance System Basin: Easterly basin draining to 160'" Ave SE (including upstream areas) Site Visit on 01/05/01 Weather: Rain.)'. ~ti~~i :\ ' Draiill!ge ; ',;:Ur,iunage, : Slope -Distancefro111 · . Existing -Potential_--• __ -Observado!)s,ofF'ield li1J~.itL~f ~:;,1~;Jffi!\ ;;J~~lf liiiL )Sit~ Discharge Problems Problems Ins~!1~1f 1mJ 1 -~(ttt~l~~190, ·li1~~l~ J '.(~)' Pasture area drains I 2 56 58 2 3 4 5 Sheet flow Sheet flow 12-inch diameter CP Length= 90' Roadside ditch Width: 1.5' Depth: 2' Side slope: 2: I North boundary ditch Width: 1.5' Depth: 1.5' Side slope: I: 1 North boundary ditch Width: 1.5' Depth: 3.0' Side slape: 2: 1 North boundary ditch Width: 2.0' Depth: 3.0' Side slope: 2: 1 towards site Forested area HW=l' Earth-lined ditch; east side of 158th Avenue SE Earth-lined ditch Grass-lined ditch w/ briers Earth-lined ditch 2 4 3 2 2 1/4 wle=J;320 ft : 1-: -con __ strictions,"Uilder~pacity, ponding, --:--·--1 tributmy area. __ lik~lihp<x,l _____ :?f __ ,_•---:( @') --> :, _-overtopping,sooining, bank sloughing; : , • --problem, ovtirfl~,i?' ---; --· seditl,entation; incision; other erosion ---pathways, potential impacts West boundary of site South portion of site Northwest comer of site North of site I North boundary of site· I North boundary of site I North boundary of site j Minor erosion I Somewhat undulating - topography; runoff from south boundary of site flows south Conveys drainage from west ditch of 158th Avenue SE I Collects runoff from roadside ditches along 158th Avenue SE and areas to north of site Collects runoff from areas to north of site Collects runoff from areas to north of site Table 1 ( continued) Basin: Easterly basin draining to 160 .. Ave SE ~];oai'tion ttimL·•· Drainage Component Type, Name. and Size . jg.'f 'I J)'pe: sheet flow, swale, 1,/,,/ ; ~-channe~ ~ipe. , .. ,,, .. ,.• ,. . . S=: diam~ width 6 I North boundary ditch 7 8 9 JO Width: 2.0' Depth: 3.0' Side slope: 2:1 Roadside ditch Width: 1.5' Depth: 2' Side slope: 1.5:1 Side channel from onsite wetland Width: 2' Depth: 1.5' Side slope: 2: I · Roadside ditch Width: 1.5' Depth: 2' Side slope: 3: I 12-inch diameter CP ... Drainage · Component · Description . ' ,. ,-. . _.. dr,ainagc basin, vegetation, cover, depth, .;...·or sensitive area Dense briars Grass-lined ditch; west side of 158" Avenue SE Wetland Grass-lined ditch HW=J' II Roadside ditch I Grass-lined ditch Width: 2' Depth: 1.5' Side slope: 3: I 12 12-inch diameter CMP I HW=l.5' I Slope I Distance from I Existing I Potential Site Discharge Problems Problems (%) 3 4 I 0.5 3 2 3 2 · 1/4 mile=l,320 ft constrictions, under capacity, ponding, (Ff) overtopping. scouring, bank sloughing. sedimentation. incision, other erosion Northeast corner of site East boundary of No scouring or site erosion; road embankment is steee but stable I East boundary of \ None site I East boundary of site 40 I None 60-400 400 Observations· of Field.·· Inspector; Resinirce \ Reviewer, ·or••:.\: Resident :cc:\f:,~\ tributa,y area, likclihood;"of: · problem, overflow .. ):c pathways, potential impacts Collects runoff from areas to north; ditch jogs around utility box; ditch from west side of 160th Avenue SE joins in I Small amount of flow observed Table 1 ( continued) Basin: Easterly basin draining to 160"' Ave SE '~; · ............ · 1 · -~ ;-1, •• , .. ",,,., .... (;[;~}ID>> ComPQnentType, -· , .. Coinponent' . (\: \ ·site. Disclfarge•- ilii\'2"1/f;/c,; ---N. · ·d's· -'.; o'" '·t·· · · "?Y · \' .. -,. ·, ·,-·-. '·· ,_,. · • '· ,,.,<;"''''···,>•"·'· • ame. an ize . -escnp 100 .-.• ,. .:c·, , .. ~f;~j;t\(/:? '~' -~ -~' ~_:__--_F_,,~;,~_~---,;-_: '_ ---~L' '/:·.:·:-· .. _ .. -··. _·.;'··::· .. 1lii\~n ·-~~J'; 1;~~1i~ li,f }%>ti "4 ~;;~ 3 ~? ft -- 13 14 15 16 17 18 19 Roadside ditch I Grass-lined ditch I 3 I 420-660 Width: 2' Depth: 1.5' Side slope: 2: I 12-inch diameter CP Length.=40' HW=l.5' I 3 24-inch diameter CMP I HW= I' Length= 20' Roadside ditch I Grass-lined ditch Width: 2' Depth: l.5' Side slope: 2: I 18-inch diameter CMP I HW=l' Length= 80' Roadside ditch I Earth-lined ditch Width: 3' Depth: 3'· Side slope: 2: l Braided channel Forested 2 3 3 2 660 780 820-860 860 950-1,000 l ,000-l, I 00 •,.·.-Existing --, Potential · -_ Observations <1fF,i.~l!t Problems 'Problems ----Inspector/Resoulc(; · -< Rft~t~tt/tJJ: co. __ nstrieti.:ons,,. _wi ___ der_. ca.pacity,pondmg., :l_tn ___ ·butaryarea. ______ ._:Jikel ___ ih_-__ ooa_ :.-~_r __ ._•• _ ' overtoppmg. scourmg, _bank sloughing, : · , --. · . prob)em,-overtlmv;cC' i-i sedimentation; incision_: other erosion -' --i,athways, .i,oteritiaUmpiictif Downstream end of culvert is crimped Some sediment at culverts Past drainage problem reported at this location; See Drainage Complaint No. 97-0423 Minor erosion at outlet of 18-inch diameter CMP Culvert crosses from west to east side ofroad Water flows east among trees Table I ( continued) Basin: Easterly basin draining to 160'" Ave SE !~oil .. ,,:.,, Drainage., .T cc __ ,O,Drainage·'·'''.: Slope•. Distance from,.· Potential . Observation!i'of.Field:1 (illti~ itf N;i~f ;~~tl If !)l~lit[{f tt, > ·. . • ·. .S!tf~is~~!i,fi' Proble~s ... · Ins~f J;tmtf J 1il1f~t~4!1~~11flI1ii!?: ···0·~~::i:!£~::· •. , .. ·,lt?:l17Bi; 20 I Ponded area I Forested, potential I 0.5 I 1,100-1,200 I I I Flow path through 21 22 23 24 25 26 Channel Width: 2.5' Depth: 1' Side slope: 2: I 120inch diameter CMP 12-inch diameter culvert Channel Width: 2.5' Depth: 2.5' Side slope: Vertical 24-inch diameter culvert Channel Width: 3' Depth: 4' Side s!ape: I : I wetland area middle of ponded area Earth-lined Earth-lined bottom; concrete block walls Earth-lined 2 1-2 1-2 2 3 1,200-1,350 I 1,350 I 1,450 I 1,470-1,600 1,600 1,660-1, 700 I Water likely backs up under hi flows I Potential overlapping of drivewav Past drainage problem reported at this location; See Drainage Complaint No. 97-0206 Highly eroded banks I Erosion likely to continue I Culvert passes under horse corral Culvert passes under driveway Culvert has trash rack and concrete headwall inlet Table 1 ( continued) Basin: Easterly basin draining to 160'' Ave SE ff~til>ji/1·}: ' })rliittage < , > \ :?.:Drai11iige } _Slope DistanceJrom Existing .. Potential f Observation·s of Field: ~it•Yf1'.7f '"'."(}g}l!p,o'ilfi:itType,e' ' :('tg<ii.1Po#e11f · SiteDisc_h~rge Pro_blems Problems · Inspec!or, Res!J~rce ~ itf!~ij~,l{f J] f t~·~d ~(~e/ \\;t1~criJ>tio~ · . . . < ~ __ ~ _ _ __ _ ~8~;':ritj. 1 -~ ·· %.\S!:l!Fig?SL ;Type:.sheet.tlow/swale; , C~e basin, ., .. ., ._ 1/4 mil.F-1,320 ft • , .. · constrictions, under capacity, ponding, -.·, tributaryarea,likelihoodof ~1?.t.')i'Hiti!'ilitn:am,cluimielfpipc-.•'·· ·veg.iitation;>cover•depth. • ·(%) ··: . ,· (Ff)'·· . overtopping scowing bank sloughing·· · ... • · ·prob!em;ovefoow•:'.'' tt~J%;!:f;{CXFsii.e: ~ mdth< ' . type':citsci!s,tiv~area • · ... · .. · sec!imentatiori, iricisi~ other erosion' · • path""ys;.potentlaJ.,;;;;:,;;;J;; 27 I Channel I Earth-lined I 6 I 1,700-2,000 I Eroded banks I Erosion likely to I Channel heads down hill Width: 3 • . continue towards SE 144th Street Depth: 4' Side slope: I: i Table I ( continued) Basin: Westerly basin draining to 156th Ave SE lf~If}lii;j: Iii;; ;t"' t~rl ·.::aw.: ::::: > ~i ~M~ig;5,;,, DP<= sheetJl,~w.'~e,/ • r;J:t~~ ~ :;c . c .• , . '·},. ;:.·. .·,. , l/4. mile= 1;320 ft JI:. , . constrictions; under capacity, ponding, · .•• , tributary_area, _ljkelih@.;qr, ~0·,o..,, .. ,., •• , •·siream;i:himner/·· ·· .. ., , . .,, .· · ·ewe ··oofu·depth, · -•··{%) ... · • · ·•. ·· ·(Ff)·•·, ·•· · • . overt · · · sco · · · bank sloughing· ... · -_· · .·• · ··-bl · ·•overllaw'··""··•·• ~J~{~~t·ffi 'sli.e: diinnriiif~0 ·J / '.~,i:,~iti~iarea .-·' • d.+ · •Y .• ··•• · · '· · · · · ·,, · -' ,-,_ · 'sedim":'ori; :::~ other erosion', : ' p),ih~Ys'.~~~/' 57 I Sheet flow I Forested area I 2 I Southwest comer I I I Runoff from southwest of site comer of site sheet flows towards SE 13 8th Place 30 31 32 33 34 35 36 Roadside ditch Width: 1.5' Depth: 1.5' Side slope: 3: I Ditch Width: 0.5' Depth: 0.5' Side slope: 3: I Sheet and/or shallow channel Roadside ditch Width: 2' Depth: 3.5' Side slope: 2: I 12-inch diameter CP 12-inch diameter CP 12-indi diameter CP Grass-lined ditch Shallow grass-lined ditch Grass area; no distinct flow path Earth-lined ditch HW=l' HW=l.5' HW=l.5' 2 2 3 5 4 4 4 Road improvement along SE 136th Street Road improvement along SE 136th Street Road improvement along SE 136th Street 0-150 150 220 310 None Upstream end of culvert partially blocked with leaves Flows to east towards Location 1 Flows to grass area to west in road ROW Access to vacant lot Table 1 ( continued) Basin: Westerly basin draining to 156'" Ave SE ~ ~lt{i~,~;; :}; :•<9t~~~#~ }£ii ;~kt3,~~~-~~n}?fJ : §Ip~ :,~is,!a.n,ce!t,~~ , .• Existing ••.•. f:-Potential--··ob~e,Y~ti~ns,~fJit}[: :,;;si,.;Jffi.,di> ),Cc>mi><!~e!(Type, \C)-~Ol11J1Cl.'1e11r,c,/ i . :.r ·.· Site D1stlt~rge•· ·· :,Problems · Problems .. : Inspector,~es11urc~/ tlJi?z;{;; ,)1:iN~~it~f~eJ,, '.-\'\1.~}~~\l0ftlif\; ·' , .. , . : ·. : . ·· :J~iYlii?fiit't §1Si,ilF ... ··.<s•« , Type:· sheet flow. 'SWlil. e;. , ., .... }:• :(chiiiriag. •.·. · e basin;, Ji·:·., .. ·. < : . ,., 1/4 inile=l·,···3.·2 .. 0.fFC.1•.·.· .·. constrt. ·ctions; under caps. city, ponding; ,. tributaryatea, likelihooo:of.: ,~!~~0';}.' ·~:;:~;!~~ fi .. t~~~'!::''"' (o/o): •· > · · .. -~>,fY< : ~":!°=:&i!~!0 ~~ ~th:'~:;~~~~ 37 I Roadside ditch I Earth-lined ditch 5 340-470 4-6 inches of Debris has Width: 2' leaves in bottom potential to block Depth: 2.5' of ditch downstream Side slape: 2: I 38 I 12-inch diameter CP HW=l' 39 40 41 42 43 44 12-inch diameter CP I HW=l.5' crossing SE 137th Place Type I CB 12-inch diameter CMP in 12-inch diameter N12 out Type I CB -grate inlet 12-inch diameter N12 Type I CB 12-inch diameter Nl2 Type I CB 12-inch diameter Nl2 Type I CB 12-inch diameter Nl2 4 4 4 4 4 3 3 470 550 600 660 870 950 1,100 Upstream end of culvert partially blocked with leaves culverts Table 1 ( continued) Basin: Westerly basin draining to 156 .. Ave SE &0 ~.t':!iit i~; fl,~~tll:IPE~!t!~:fj· f ~~~~ · 45 I 12-inch diameter CP from east 46 I Type I CB -grate inlet 47 48 49 50 51 52 53 54 12-inch diameter Nl2 in 12-inch diameter CP out Type I CB -iuate inlet 12-inch diameter CP from east Type I CB -grate inlet 12-inch diameter Nl2 out 12-inch diameter Nl2 outlet 12-inch diameter CP 12-inch diameter CP Roadside ditch Width: 1.5' Depth: 2' Side slope: 2: I Roadside ditch HW= I' HW= I' Grass-lined ditch Grass-lined ditch; ditch flattens out Slope I ·• ~is.ta~ce from .· · Site Discharge 1/4.mile=l,320 ft • ' (%) f (TI) . 2 1,240 3 1,240 3 I 1,290 I 2 1,290 3 I 1,320 3 I 1,460 3 1,470 3 1,520 3 1,550-1,750 2 I, 750-2,000 Existing Problems Potential Problems constrictions, under capacity, ponding, . overtopping, scouring, bank sloughing, sedimeiltation, incisio~ other errision .: _:. Observations. of F'.it,;ltf · lnspector/Res~urce,'; •I . .·• ~~fJ!Jt0tJ 1i~!i ·tributary.area,likelihood:.oF . •. prob1~overt1ow'2tt oath"'1ys, poterttial IIDf)!lcts. Collects runoff from SE 139th Place I ·· 1 Collects runoff from SE 139th Place Half-filled with sediment Water likely spreads out onto adjacent pasture Table 1 ( continued) Basin: Westerly basin draining to 156 .. Ave SE tl;:/#ti~fl v Dr!l,inage ·. > Drainage · · Slope . Distancef rom lriif tJ~s;.;1:;~.J ;:, \;~~iir~:. .. . Site Discharge_ , .iFi"~ 5'ccf )'fue: slieet llov/ sw•l · 1· · ,. drllinage llas ~ . · • 1 · I 1/4 triile= l 320 ft , ~tt~~'iH ·~tr~-: ~~~~~~· ·. ·· ::to/o) · • · .. ···· .. ·· . <ITi·· . 55 I 12-inch diameter CP I HW = l' I 2 I 2,000 . Existing Problems Potential Problems constrictions; under capacity, ponding, . overtopping, scouring, bank sloughing, .. sedimentation; incision, other erosion Past drainage problem reported at this location; See Drainage Complaint No. 97-0318 Observations11f Fi~I~· Inspector,.Resource:' ~it~riit0 r; )}i tributacy.area,'likelihood'<>F . . problerii;ovei.oo\'d{> oathWllys, pi)\ential impacts' 4. Flow Control and Water Quality Facility Analysis and Design Part A: Existing Hydrology The site consists of two basins. The topography of the east basin generally slopes from the northwest to the southeast (Figure 3). The topography of the west basin generally slopes from the east to the west. Cover types on the site include a single-family residence (Photo I in Appendix A. I), forest (Photo 2 in Appendix A. I), and pasture. A Class 2 wetland has been identified in the northeast portion of the site. Cover types and areas used in the storm water design for existing onsite conditions are summarized in Table 2. Part B: Developed Site Hydrology The proposal for development includes building 75 single-family dwellings on about 12 acres. The proposed site plan is provided in Figure 6. Cover type areas for developed onsite conditions are summarized in Table 2. Under developed conditions, the developed portion of the site, including offsite road improvements, will consist of 4.53 acres of grass and 7.23 acres of impervious area. Under developed conditions, stormwater from the site and road improvements will be collected and treated onsite to basic water quality standards. Stormwater will be managed separately in the east and west basins. In the east basin, stormwater from the site and a portion of improvements along SE 136th Street will be collected and managed in an onsite combined wetpond/detention pond. The outfall of the pond will discharge to the drainage ditch along the west side of 160th A venue SE. Stormwater from a 0.33-acre portion of SE 1361h Street will bypass the onsite stormwater facility, but will be treated to basic .water quality standards with a small wetvault located near the intersection of SE 136th Street and 160th A venue SE. The stormwater pona in the southeast comer of the site will be designed using a downstream point-of-compliance to account for the bypass from SE 1361 h Street. In the west basin, stormwater from the site and a portion of improvements along SE 136th Street will be collected and managed in an onsite detention vault and subsequently treated by a biofiltration swale. Stormwater from a 0.19-acre portion of SE 136th Street will bypass the onsite storm water facility. The storm water vault in the southwest comer of the site will be designed using a downstream point-of-compliance to account for the bypass from SE 136th Street. Runoff from the existing impervious area of 0.16 acre on SE 1361h Street will be treated onsite in lieu of the bypass. 4-1 Evmddl Pfat Preliminary 11R-June 2001 Table 2. Existing and Developed Site Basin Condit,ions Existing Conditions Subbasins KCRTS Till-forest Till-pasture Wetland Till-grass lmperv Basin (AC) (AC) (AC) (AC) (AC) East Basin exeast Site 7.54 1.74 --- SE 136th Street · Improvements -0.47 --0.09 Subtotal 7.54 2.21 --0.09 West Basin exwest Site 0.44 1.12 --- SE 136th Street Improvements -0.29 0.07 Subtotal 0.44 1.41 --0.07 Grand Total 7.98 3.62 --0.16 Developed Conditions Subbasins KCRTS Till-forest Till-pasture Wetland Till-grass Jmperv Basin (AC) (AC) (AC) (AC) (AC) East Basin deveast Lots 3.79 4.82 RID 0.16 0.66 SE 136th Street Improvements -0.56 Subtotal ---3.95 6.04 West Basin devwest Lots 0.58 0.73 RID 0.10 SE 136th Street Improvements -0.36 Subtotal ---0.58 1.19 Grand Total ---4.53 7.23 Note: 0.19 acre of impervious of SE 136 Street improvements bypass the RID facility in the west basin. 0.33 acre of impervious of SE 136 Street improvements bypass the RID facility in the east basin. 4-2 Total (AC) 9.28 0.56 9.84 1.56 0.36 1.92 11.76 Total (AC) 8.61 0.82 0.56 9.99 1.31 0.10 0.36 1.77 11.76 Part C: Performance Standards A summary of flow control, conveyance, and water quality treatment performance standards for the project is presented in Table 3, below. Table 3. Summary of Performance Standards . Cate1wrv Performance Standard Source Flow Control a Level 2 RID D 1998 King County Surface Water Design Manual; Applications Map Conveyance System D Provide conveyance for D Surface Water Design Capacity developed 25-year storm Manual Section I .2.4. I Water Quality D Basic water quality treatment D Surface Water Design Treatment Menu using a wetpond in the east Manual Section 1.2.8.1; basin and a biofiltration swale Applications Map or wetvault in the west basin Source Control D None proposed Oil Control D The site does not meet the D Surface Water Design definition of a high-use site Manual Section 1.3.5 4-3 Evmddl Plat Prelimuwy 71R-June 2001 Part D: Flow Control System KCRTS was used to design the proposed stormwater facilities. Procedures and design criteria specified in the 1998 King County Surface Water Design Manual were followed for hydro logic modeling. Descriptions of the stormwater systems and details of the design analysis are provided below. A plan view of the stormwater systems is provided in Figure 6. For stormwater facility designs, the reduced KCRTS time series data set was used for the Sea- Tac rainfall region with a correc.tion factor of 1.0. Documentation of the KCRTS input and output including descriptions of executable files, reservoirs, and times series is provided in Appendices C and D. Under developed conditions, stormwater from the site and offsite road improvements will be collected and treated onsite to basic water quality standards. A combined wetpond/detention pond will be used to manage runoff in the easterly basin. A small wetvault will provide water quality treatment to a portion of SE 1361h Street that bypasses the stormwater facility. A biofiltration swale will be used to manage runoff in the westerly basin. Level 2 RID standards are required by the King County Flow Application Maps and recommended by Lower Cedar River Basin and Nonpoint Action Plan. The natural discharge locations from the site will be maintained at the outlet of the proposed storm water facilities. Stormwater from the development in the easterly basin will be managed with a combined wetpond/detention facility. Stormwater from the development in the westerly basin will be managed with a detention vault facility followed by a biofiltration swale. Level 2 RID standards are proposed for both facilities. The stormwater facilities shown in Figure 6 meets Level 2 RID criteria and basic water quality requirements. Flow duration curves at the downstream point-of- compliance are provided in Figures 7 A and 7B. Peak flow rates for the downstream point-of- compliance, under existing and developed site conditions follow Figures 7 A and 7B. The downstream point-of-compliance includes runoff from portions of SE 136th Street that bypasses the stormwater facilities. The duration curves and peak flow rates, shown for existing and developed conditions, indicate that Level 2 RID criteria are met. The stormwater facility in the east basin requires approximately 117,770 cubic feet of live storage, excluding a factor of safety, to meet Level 2 RID standards. The stormwater facility in the east basin requires approximately 17,921cubic feet oflive storage, excluding a factor of safety, to meet Level 2 RID standards. A factor of safety of 5 to IO percent will be added to the final design volume. Part E: Water Quality System Basic water quality standards apply to the site. A basic wetpond will provide treatment for the site's easterly basin. A small wetvault will provide treatment for a portion of road improvements along SE 136th Street that bypasses the easterly stormwater facility. A biofiltration swale will · provide treatment for the site's westerly basin. Alternatively, a wetvault may be used to treat stormwater collected from the site's west basin. A treatment trade is proposed for stormwater collected from the road improvement area along SE 136th Street in the site's westerly basin to account for a small area of the road improvement that bypasses the westerly stormwater facility. 4-4 Evorddl Plat Preliminary 11R-June 2001 Runoff from an area of existing pollution generating impervious surfaces equivalent to the area bypassed will be collected from SE I 36'h Street and treated onsite. The required wetpool volumes for the treatment facilities were determined using equations provided in Chapter 6 of the 1998 Surface Water Design Manual. Basin areas, annual runoff volumes, VbNr ratios, and required volume for the wetpond are given in Table 4. 4-5 Evau/dl Plat Preliminary 11R -.hme 2001 lr ~ ~ ~ I • t i-- 1' • I • 8 • I • I I a, ;( • 'devwest' 'deveast/ ff 't \ :--;,. .. -3~·~a,) e~ SJT-El;WESL ·t· . -;: -. ;. · -· -A 41\.,.A(; 4• srbed/.)YJre{ 4 V II 7 Fen ~ ...'...!,I •,c-• ._..;~----· i ·-·-· 7-----Y 6 i 11 . . l ~ -~= JBt(!L YAlft J 30"\Y x~ (1NSIQE oiY:)-Offsite 4 AC ~ Area=0.9 lllP OF V,IIJI.T• 482.ll IIIA1ER SIJRFACE• 481.0 ear. DET.• 475.0 ..;---- RE11D DET. IIOI...• 1S.000 CF r· DET. IIOI...• 20,200 CF (6.73'D) ,.,, 11-1 I _J L 111-I __) 5'Wood~ ' ~ ~ ~ 1 \v: 1 . J FaJT~"?'u~',:.o":"Jl..> t:ui "RIP OF \IIW• 4112.5 • • , WATER SURFACE-482-0 I BOT. DET.-477.0 I• ....,nn, DEi. WL.,o 1,!500 Cf ,. ·J?~----~~~-d~~l!Y:_$b-~J.~;;;::-~~~~ "' '" .. I Sa ~3j Filte J I ~ L17 _J_ _J _J Lot 7 I Rose Lot/t f\ -L '!--.._ _J l r-~ • I • I • I • I . • I • I • I • I • I • 4m ~ ~ ::E w I-I- <( cnz _J li; :5 0... _J a:: a. ~I Wz 0 !cc., z 3: Ill L,J ::E w > a:: 0 uJ 0 I- Ill . (I) .., . p.; ; : CII ; bG ,c : s:l 3" ; -i:: lg : ... cu 5 'u.t :~ •• ~ I-'• -~ . ...: 'Cl _g $ L': -· .! ______ _ lii~ . ' . s:l i5~ i • r,;:1-'g ! ~ i5i I o ta Is =·· H N [z •Z 0 ;1i S' '.3 CiS ,.... It/I (~ = 10 'o !! ~llf1 ~ t .. g ll • iii LL ~ Cl) -.. a: ;r: 0 ii: 0.7 ----<>--Existing --a -Developed 0.6 0.5 0.4 0.3 0.2 0.1 0-l------1-------1-------1-------1-----"'---l 1.00E-05 1.00E-04 1.00E-03 1.00E-02 1.00E-01 1.00E+OO Probability of Exceedence Figure 7A. Flow Duration Curves for RID-East Basin. Duration curves are shown at the downstream point of compliance in the easterly basin. The pond is designed to meet Level 2 RID standards. 4-7 Predeveloped Peak Flow Rates -East Basin Flow Frequency Analysis Time Series· File:exeast.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--------Flow Frequency Analysis------- Flow Rate Rank Time of Peak -Peaks Rank Return Prob (CFS) (CFS) Period 0.645 2 2/09/01 18:00 0.891 1 100.00 0.990 0. 200 7 1/05/02 16:00 0.645 2 25.00 0.960 0.517 3 2/28/03 3:00 0.517 3 10.00 0.900 0.037 8 3/24/04 19:00 0.508 4 5.00 0.800 0.303 6 1/05/05 8:00 0.457 5 3.00 0.667 0. 508 4 1/18/06 20:00 0.303 6 2.00 0.500 0. 457 5 11/24/06 4:00 0.200 7 1. 30 0.231 0.891 1 1/09/08 9:00 0.037 8 1.10 0.091 Computed Peaks 0.809 50.00 0.980 Developed Peak Flow Rates -East Basin Flow Frequency Analysis Time Series File:poceast.tsf Project Location:Sea-Tac ---Annual Peak Flow· Rates--------Flow Frequency Analysis------- Flow Rate Rank Time of Peak -Peaks Rank Return Prob (CFS) (CFS) Period 0.6il 2 2/09/01 19:00 1.13 1 100. 00 0.990 0.177 7 1/05/02 16:00 0. 611 2 25.00 0. 960 0.517 3 3/06/03 20:00 0.517 3 10.00 0.900 0.182 6 8/26/04 2:00 0. 472 4 5.00 0.800 0.173 8 1/05/05 8:00 0.214 5 3.00 0.667 0.214 5 1/19/06 2:00 0.182 6 2.00 0.500 0. 472 4 11/24/06 6:00 0.177 7 1.30 0.231 1.13 1 1/09/08 11: 00 0.173 8 1.10 0.091 Computed Peaks 0.955 50.00 0.980 4-8 Evende/1 Plat Pre/unmary 11R-.hme 2001 0.2 ---Existing --a -Developed 0.18 0.16 0.14 El_ ~ 0.12 2. a, -"' a: ~ 0 ii: 0.1 0.08 0.06 0.04 0.02 0 1.00E-05 1.00E-04 1.00E-03 1.00E-02 1.00E-01 1.00E+OO Probability of Exceedence Figure 7B. Flow Duration Curves for RID -West Basin. Duration curves are shown at the downstream point of compliance in the westerly basin. The pond is designed to meet Level 2 RID standards. 4-9 Predeveloped Peak Flow Rates -West Basin Flow Frequency Analysis Time Series File:exwest.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--------Flow Frequency Analysis------- Flow Rate Rank Time of Peak (CFS) 0.138 0.059 0 .129 0.024 0.074 0.122 0.116 0.235 Computed Peaks 2 7 3 8 6 4 5 1 2/09/01 1/05/02 2/28/03 8/26/04 1/05/05 1/18/06 11/24/06 1/09/08 18:00 16:00 3:00 2:00 8:00 16:00 4:00 6:00 .Developed Peak Flow Rates -West Basin Flow Frequency Analysis Time Series File:pocwest.tsf Project Location:Sea-Tac -Peaks (CFS) 0.235 0 .138 0.129 0.122 0.116 0.074 0.059 0.024 0.202 Rank Return Prob Period 1 100.00 0.990 2 25.00 0.960 3 10.00 0.900 4 5.00 0.800 5 3.00 0.667 6 2.00 0.500 7 1.30 0.231 8 1.10 0.091 50.00 0.980 ---Annual Peak Flow Rat<ss--------Flow Frequency Analysis------- Flow Rate Rank Time of Peak -Peaks Rank Return Prob (CFS) (CFS) Period 0.140 2 2/09/01 18:00 0.197 1 100.00 0.990 0.059 8 1/05/02 16: 00 0.140 2 25.00 0. 960 0.110 4 3/06/03 19:00 0.135 3 10.00 0.900 0.067 7 8/26/04 2:00 0.110 4 5.00 0.800 0.068 6 10/28/04 16:00 0.107 5 3.00 0.667 0.107 5 1/18/06 20:00 0. 068 6 2.00 0.500 0.135 3 11/24/06 4:00 0. 067 7 1.30 0.231 0.197 1 1/09/08 9:00 0.059 8 1.10 0.091 Computed Peaks 0.178 50.00 0.980 4-/0 Evouldl Plat Prelonmary 77R-June 200/ East Basin Residential Lots/Onsite Road 0.00 3.79 4.82 8.61 9,018 3.0 27,053 RID Tract 0.00 0.16 0.66 0.82 1,082 3.0 3,245 SE 136th Street Improvements 0.00 · 0.00 0.23 0.23 353 3.0 1,059 !Total o.ool 3.95! 5.71 ! 9.6611 I 0,452 ! 31,357 I East Basin -SE 136th Street Improvements SE 136th Street Improvements 0.00 0.00 0.33 0.33 5071 3.0 I 1,520 I '--1 T..:..ot..:..al ___ ---' _ _.:.o:..:..o.:.Jo ! __ o:..:..o:..:o.LI __ ___:.:o·::c33:.J.! __ .::..:o·:..::..,33 j .._j __ 5_07~! 1,s20 i West Basin* Residential Lots/Onsite Road 0.00 0.58 0.73 1.31 1,368 3.0 4,105 RID Tract 0.00 0.00 0.10 0.10 154 3.0 461 SE 136th Street Improvements 0.00 0.00 0.17 0.17 261 3.0 783 ._iT_ot_al ___ ---l _ _.:.o:..:..o.:.Jol __ 0:..:..5:..:8..,_! __ ___:cl.c.:..OO:.J.l __ .::_:l.;;._;;_i58 I ~I __ 1,~78_3~1 5,349 i Mean annual storm= 0.47 • Either a wetvault or biofiltration swale will be used to treat water in the west basin. 4-11 ui 11. ~ G) -.. 0:: ~ 0 ii: 0.7 ---'---Existing --a -Developed 0.6 0.5 0.4 0.3 0.2 0.1 O+------+------+----'---t--------1---_g_----1 1.00E-05 1.00E-04 1.00E-03 1.00E-02 1.00E-01 1.00E+OO Probability of Exceedence Figure 7 A. Flow Duration Curves for RID -East Basin. Duration curves are shown at the downstream point of compliance in the easterly basin. The pond is designed to meet Level 2 RID standards. 4-7 Predeveloped Peak Flow Rates -East Basin Flow Frequency Analysis Time Series File:exeast.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--------Flow Frequency Analysis------- Flow Rate Rank Time of Peak --Peaks Rank Return Prob (CFS) (CFS) Pei-iod 0.645 2 2/09/01 18:00 0.891 1 100.00 0.990 0.200 7 1/05/02 16:00 0.645 2 25.00 0. 960 0.517 3 2/28/03 3:00 0.517 3 10.00 0.900 0.037 8 3/24/04 19:00 0.508 4 5.00 0.800 0.303 6 1/05/05 8:00 0.457 5 3.00 0. 667 0.508 4 1/18/06 20:00 0.303 6 2.00 0.500. 0.457 5 11/24/06 4:00 0.200 7 1. 30 0.231 0.891 1 1/09/08 9:00 0.037 8 1.10 0.091 Computed Peaks 0.809 50.00 0.980 Developed Peak Flow Rates -East Basin Flow Frequency Analysis Time Series File:poceast.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--------Flow Frequency Analysis------- Flow Rate Rank Time of Peak -Peaks Rank Return Prob (CFS) (CFS) Period 0. 611 2 2/09/01 19: 00· 1.13 1 100.00 0.990 0.177 7 1/05/02 16:00 0. 611 2 25.00 0. 960 0. 517 3 3/06/03 20:00 0.517 3 10.00 0.900 0.182 6 8/26/04 2:00 0. 472 4 5.00 0.800 0 .17,3 8 1/05/05 8:00 0.214 5 3.00 0.667 0.214 5 1/19/06 2:00 0.182 6 2.00 0.500 0. 472 4 11/24/06 6:00 0.177 7 1.30 0.231 1.13 1 1/09/08 11: 00 0.173 8 1.10 0.091 Computed Peaks 0.955 50.00 0.980 4-8 Evmdd/ Plat Preliminary 11R-.hme 2110/ 0.2 _ _.__Existing --a -Developed 0.18 0.16 0.14 13- ~ 0.12 !2.. .. -"' a: 3: 0 ii: 0.1 0.08 0.06 0.04 0.02 0 1.00E-05 1.00E-04 1.00E-03 1.00E-02 1.00E-01 1.00E+OO Probability of Exceedence Figure 7B. Flow Duration Curves for RID -West Basin. Duration curves are shown at the downstream point of compliance in the westerly basin. The pond is designed to meet Level 2 RID standards. 4-9 Predeveloped Peak Flow Rates -West Basin Flow Frequency Analysis Time Series File:exwest.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--------Flow Frequency Analysis------- Flow Rate Rank Time of Peak -Peaks Rank Return Prob (CFS) (CFS) Period 0.138 2 2/09/01 18:00 0.235 1 100.00 0.990 0.059 7 1/05/02 16: oo 0.138 2 25.00 0.960 0.129 3 2/28/03 3:00 0.129 3 10.00 0.900 0.024 8 8/26/04 2:00 0.122 4 5.00 0.800 0.074 6 1/05/05 8:00 0.116 5 3.00 0. 667 0.122 4 1/18/06 16:00 0.074 6 2.00 0.500 0.116 5 11/24/06 4:00 0.059 7 1.30 0.231 0.235 1 1/09/08 6:00 0.024 8 1.10 0.091 Computed Peaks 0.202 50.00 0.980 Developed Peak F1ow Rates -West Basin Flow Frequency Analysis Time Series File:pocwest.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--------Flow Frequency Analysis------- Flow Rate Rank Time of Peak -Peaks Rank Return Prob (CFS) (CFS) Period 0.140 2 2/09/01 18:00 0.197 1 100.00 0.990 0.059 8 1/05/02 16:00 0. 14 0 2 25.00 0.960 0.110 4 3/06/03 19:00 0 .135 3 10.00 0.900 0. 067 7 8/26/04 2:00 0.110 4 5.00 0.800 0.068 6 10/28/04 16:00 0.107 5 3.00 0. 667 0.107 5 1/18/06 20:00 0. 068 6 2.00 0.500 0.135 3 11/24/06 4:00 0.067 7 1.30 0.231 0.197 1 1/09/08 9:00 0.059 8 1.10 0. 091 Computed Peaks 0.178 50.00 0.980 4-10 Evmddl 1'1111 Preloninary 11R-June 2001 East Basin Residential Lots/Onsite Road 0.00 3.79 4.82 8.61 9,018 3.0 27,053 RID Tract 0.00 0.16 0.66 0.82 1,082 3.0 3,245 SE 136th Street Improvements 0.00 0.00 0.23 0.23 353 3.0 1,059 !Total o.ooj 3.95! 5.71 ! 9.661 i I 0,452 j 31,357 I E B . SE 136 b S I ast asm -t treet morovements SE 136th Street Improvements 0.00 0.00 0.33 0.33 5071 3.0 I 1,520 I LiT_ot_a1 ___ ---1._---=.oc..:..o.:;Joj __ o:..:..oc.:o_._j __ ___::co·::..:33:..1.l __ o.:.;..3:..:;..,3 j .__i __ 5_07~1 1,520 I West Basin* Residential Lots/Onsite Road 0.00 0.58 0.73 1.31 1,368 3.0 4,105 RID Tract 0.00 0.00 0.10 0.10 154 3.0 461 SE 136th Street Improvements 0.00 0.00 0.17 0.17 261 3.0 783 ._jT_ota_l ___ -'--__ o._ooc..L.i _----'-'o.;;...;58C.L.i ___ 1:..:.c.oc..c.o .... l _ ____;;..;t..:....:..,58 j j~-1~, 7_83~! 5,349 I Mean annual storm= 0.47 • Either a wetvault or biofiltration swale will be used to treat water in the west basin. 4-11 5. Conveyance Systein Analysis and Design Stormwater RID System Conveyance The onsite stormwater system will be designed to convey the 25-year peak flow rate for conveyance systems upstream of the stormwater facility. A conceptual design of the conveyance system is shown in Figure 6 of Section 4. 5-1 Evenddl Plat Preliminary 11R -June 2(J(J/ 6. Special Reports and Studies A summary of special reports and studies conducted for the Evendell Plat is presented below. Table 5. Summary of Special Reports and Studies Study/Report Geotechnical/soils Wetlands Evendell Plat, King County, Washington. Wetland Delineation and Report Floodplains Groundwater Anadr?mous fisheries impacts Hydrology Level 1 Downstream Drainage Analysis (Section 3 Evende/1 Plat Preliminary Technical Information Report) Water quality Structural fill 6-1 E"6Uldll'lal Pre/unmary 71R-.,_, 2001 Date Conducted NIA June 2001 NIA NIA NIA January 2001 NIA NIA 7. Other Permits A summary of permits required for the Evendell Plat project is listed in the table below. Table 6. Summary of Other Permits Required Permit Onsite Sewage Disposal Onsite Well Developer/Local Agency Agreement Hydraulic Project Approval NPDES Stormwater Forest Practices Section 10, 40 I, 404 Evendell Plat Preliminary nR-June 2001 Required? N9 No No No Yes Yes No 7-1 Regulating Agency Seattle/King County Department of Health Seattle/King County Department of Health Washington State Department of Transportation Washington State Department offish and Wildlife Washington State Department of Ecology Washington State Department of Natural Resources United States Army Corps of Engineers 8.' ESC Analysis and Design Construction activities required to develop the site will include the following: 0 clearing and grading, 0 0 earthwork ( excavation, filling, hauling), and pavmg. An erosion and sedimentation control plan for the project is provided in Figure 8. Construction best management practices (BMPs) have been selected for each of the particular types of anticipated construction activities. Implementing proven BMPs at construction locations, such as minimizing exposed soil surfaces, and controlling erosion and sedimentation will reduce potential impacts on surface water. BMPs for the proposed types of construction activities are outlined below. Clearing Limits To prevent disturbance of project areas not designated for construction, a construction clearing limits fence or silt fence will be installed by the Contractor. These fences will be installed prior to clearing and grading activities where appropriate. Cover Measures Temporary and permanent cover measures will be provided by the Contractor to protect disturbed areas. Mulching will be used to provide immediate temporaf)'. protection from erosion and to enhance plant growth. Plastic covering may be used in order to protect cut and fill slopes and stockpiles and/or to encourage grass growth in newly seeded areas. Perimeter Protection In order to reduce the transport of sediment off-site, the Contractor will install filter fences as indicated on the drawings prior to grading activities. Equipment Parking and Storage of Materials Parking areas for vehicles and equipment on the construction site should be covered with gravel to prevent erosion and tracking of the underlying soil. Machinery and vehicles should be well maintained. In the event of a spill or leak of toxic materials, the incident should be reported to the Construction Site Supervisor and actions should immediately be taken to contain and cleanup the materials. 8-/ Evauld/Pfq/ Preliminary 11R-June 200/ Traffic Area Stabilization Stabilized pads of quarry spalls will be installed by the Contractor at all egress points from the project site to reduce the amount of sediment transported onto paved roads or other off-site areas by motor vehicles. Sediment Retention Sediment retention .will be provided by silt fencing at the locations and dimensions shown on the drawings and shall be maintained by the Contractor. Wet Season Construction If soils are exposed during the period of October I to March 31, the Contractor will mulch and seed as much disturbed area as possible by the first week of October in order to provide grass cover for the wet season. The Contractor will also conform to the following wet season special provisions: 0 Apply cover measures to disturbed areas that are to remain unworked for more than two days. " Provide on-site stockpiles of cover materials sufficient to cover all disturbed areas. 0 Seed all areas that are to be unworked during the wet season by the end of the first week of October. 0 Apply mulch to all seeded areas for protection. " Provide construction road and parking lot stabilization areas for all sites. Maintenance The Contractor will maintain and review all TESC measures on a regular basis. Final Stabilization Prior to obtaining final construction approval, the site shall be stabilized, the structural TESC measures removed, and drainage facilities cleaned. Disturbed areas of the site should be vegetated or otherwise permanently stabilized. At a minimum, disturbed areas should be seeded and mulched to provide a high likelihood that sufficient cover will develop shortly after final approval. 8-3 Ew.nde/J Plat Preliminary 11R-June 2001 9. ·Bond Quantities, Facility Summaries, and Declaration of Covenant· A bond quantities worksheet for the project will be prepared during final engineering for the submittal. A summary of onsite conveyance and water quality facilities is given in Figure I 0. None of the facilities will be privately owned or maintained. Therefore a declaration of covenant is not needed. 9-1 Evenddl Plat P,e/iminary 71R-June lOOJ Figure 10. Flow Control and Water Quality Facility Summary Development: Evendell Plat Date: 6-11-01 Location: King County Township 23N, Range 5E, Section 14 ENGINEER DEVELOPER Name: Ed McCarthy Name: Mike Romano (representing U.S. Land Develooment, Inc.) Firm: Haozous Enoineerino, P.S. Firm: U.S. Land Develooment Associates, Inc. Address: Address: 14816 SE I 16th Street Clo Centurion Development Services Renton, WA 98059 22617 8th Dr. SE Phone: r 425\ 235-2707 Bothell, WA 98021 Phone: /425) 486-2563 Developed Site: 12 Acres Number of detention facilities on site: Number of lots: 75 single-family residences Number of infiltration facilities on site: 0 I Combined Wetpond/R/D I Vault · Downstream DrainaPe Basins Lower Cedar River Number & type of water quality facilities on site: _I __ biotiltration swale (regular/wet/ or continuous inflow?) _I __ combined detention/WQ ponds __ flow dispersion trenches combined detention/wetvault ___ compost filter __ filter strip ___ landscape management plan Immediate Maior Basin Orting Hills Cedar River __ sand filter (basic or large?) ___ sand filter, linear (basic or large?) ___ sand filter vault (basic or large?) _l __ vault 2 ___ energy dissipation structure(s) Basic pond (basic or large?) ___ oil/water separator (baffle or coalescing plate?) catch basin inserts: Manufacturer. ___________________ _ ___ pre-settling pond ___ pre-settling structure: Manufacturer __________________ _ __ flow-splitter catch basin DESIGN INFORMATION Easterly Basin SE 136" Street Westerly Basin /Easterlv Basin) Water ""alitv Desi= Volume /CF\ 31,400 5,300 Biofiltration Swale Onsite Area {AC) 9.43 0.00 1.41 Offsite Area(AC) 0.56 0.33 0.36 Type of Storage Facility Combined Wetvault Vault Wetnond/R/D Reauired Live Storaoe Volume/CF) 118,000 NIA 18,000 Figure 10 ( continued) DESIGN INFORMATION Easterly Basin SE I 36rn Street Westerly Basin (Easterlv Basin) Predeveloped Runoff Rates 25-year (CFS)** 0.645 0.023 0.138 Post-RID Developed Runoff Rates 25-vear (CFS)** 0.61 I 0.069 0.140 •• Based on KCRTS I-hour peak rates for the proposed developed area. 10. Operations and Maintenance Manual The conveyance and water quality facilities for the Evendell Plat will not be privately maintained nor do they contain non-standard features. The table below specifies the maintenance requirements for each component of the stormwater facility being constructed. Applicable maintenance requirements, taken from the 1998 Surface Water Design Manual, are referenced to the pages that follow. Table 7. Summary of Maintenance Requirements for Stormwater Facilities Maintenance Requirement 0 No. I -Detention Ponds a No. 4 -Control Structure Restrictor a No. 5 -Catch Basins a No. 6 -Debris Barriers a No. JO-Conveyance Systems 0 No. 13 -Water Quality Facilities -Wetponds a No. 13 -Water Quality Facilities -Wetvaults a No. 13 -Water Quality Facilities -Biofilration Swales 10-1 Evouldl Plat Preliminary 11R-.hme 200/ NO. 1 -DETENTION PONDS General Trash & Debris Any trash and debris which exceed 1 cubic foot per 1,000 square feet (this is about equal to the amount of trash it would take to fill up one standard size office garbage can). In general, there should be no visual evidence of dumping. Poisonous Vegetation Any poisonous or nuisance vegetation which may constitute a hazard to County personnel or the public. Pollution Oil, gasoline, or other contaminants of one gallon or more Q! any amount found that could: 1) cause damage to plant, animal, or marine life; 2) constitute a fire hazard; or 3) be flushed downstream during rain storms. Unmowed Grass/ If facility is located in private residential area, Ground Cover ·mowing is needed when grass exceeds 18 inches in height. In other areas, the general policy is to make the pond site match adjacent ground cover and terrain as long as there is no interference with the function of the facility. Rodent Holes Any evidence of rodent holes if facility is acting as a dam or berm, or any evidence of water piping through dam or berm via rodent holes. Insects When insects such as wasps and hornets interfere with maintenance activities. Tree Growth Tree growth does not allow maintenance access or interferes with maintenance activity (i.e., slope mowing, silt removal, vactoring, or equipment movements). If trees are not interfering with access, leave trees alone. Side Slopes of Pond Erosion Eroded damage over 2 inches deep where cause of damage is still present or where there is potential for continued erosion. Storage Area Sediment Pond Dikes Settlements Emergency Rock Missing Overflow/SpiUway Accumulated sediment that exceeds 10% of the designed pond depth. Any part of dike which has settled 4 inches lower than the design elevation. Only one layer of rock exists above native soil in area five square feet or larger, or any exposure of native soil at the top of out flow path of · spillway. Rip-rap on inside slopes need not be replaced. /0-2 Trash and debris cleared from site. No danger of poisonous vegetation where County personnel or the public might normally be. (Coordination with Seattle-King County Health Department) No contaminants present other than a surface film. (Coordination with Seattle/King County Health Department) When mowing is needed, grass/ground cover should be mowed to 2 inches in height. Mowing of selected higher use areas. rather than the entire slope may be acceptable for some situations. Rodents destroyed and dam or berm repaired. (Coordination with Seattle/King County Health Department) Insects destroyed or removed from site. Trees do not hinder maintenance activities. Selectively cultivate trees such as alders for firewood. Slopes should be stabilized by using appropriate erosion control measure(s); e.g., rock reinforcement, planting of grass, compaction. · Sediment cleaned out to designed pond shape and depth; pond re- seeded if necessary to control erosion. · Dike should be built back to the design elevation. Replace rocks to design standards. NO. 4 -CONTROL STRUCTURE/FLOW RESTRICTOR General Trash and Debris Distance between debris build-up and bottom of All trash and debris removed. Cleanout Gate Orifice Plate Overflow Pipe Manhole Catch Basin (Includes Sediment) orifice plate is less than 1-1/2 feet. Structural Damage Damaged or Missing Damaged or Missing Obstructions Obstructions Structure is not securely attached to manhole wall and outlet pipe structure should support at least 1,000 lbs. of up or down pressure. Structure is not in upright position (allow up to 10% from plumb). Connections to outlet pipe are not watertight and show signs of rust. Any holes-other than designed holes-in the structure. Cleanout gate is not watertight or is missing. Gate cannot be moved up and down by one maintenance person. Chain leading to gate is missing or damaged. Gate is rusted over 50% of its surface area. Control device is not working properly due to missing, out of place, or bent orifice plate. Any trash, debris, sediment, or vegetation blocking the plate. Any trash or debris blocking (or having the potential of blocking) the overflow pipe. Structure securely attached to wall and outlet pipe. Structure in correct position. Connections to outlet pipe are water tight: structure repaired or replaced and works as designed. Structure has no holes other than designed holes. Gate is watertight and works as designed. Gate moves up and down easily and is watertight. Chain is in place and works as designed. Gate is repaired or replaced to meet design standards .. Plate is in place and works as designed. Plate is free of all obstructions and works as designed. Pipe is free of all obstructions and works as designed. See ·c1osed Detention Systems· Standards No. 3 See ~closed Detention Systems' Standards No. 3 See ·catch Basins· Standards No. 5 See 'Catch Basins· Standards No.5 10-3 General Trash & Debris (Includes Sediment) Structure Damage to Frame and/or Top Slab Cracks in Basin Walls/ Bottom Sediment/ Misalignment Trash or debris of more than 1/2 cubic foot which is located immediatery in front of the catch basin opening or is blocking capacity of the basin by more than 10% Trash or debris (in the basin) that exceeds 1/3 the depth from the bottom of basin to invert the lowest pipe into or out of the basin. Trash or debris in any inlet or outlet pipe blocking more than 1/3 of its height. Dead animals or vegetation that could generate odors that could cause complaints or dangerous gases (e.g., methane). Deposits of garbage exceeding 1 cubic foot in volume Comer of frame extends more than 3/4 inch past curb face into the street (If applicable). Top slab has holes larger than 2 square inches or cracks wider than 1/4 inch {intent is to make sure all material is running into basin). Frame not sitting flush on top slab, i.e., separation of more than 3/4 inch of the frame from the top slab. Cracks wider than 1 /2 inch and longer than 3 feet, any evidence of soil particles entering catch basin through cracks, or maintenance person judges that structure is unsound. Cracks wider than 1/2 inch and longer than 1 foot at the joint of any inlet/ outlet pipe or any evidence of soil particles entering catch basin through cracks. Basin has settled more than 1 inch or has rotated more than 2 inches out of alignment. 10-4 No Trash or debris located immediately in front of catch basin opening. No trash or debris in the catch basin. Inlet and outlet pipes free of trash or debris. No dead animals or vegetation present within the catch basin. No condition present which would attract or support the breeding of insects or rodents. Frame is even with curb. Top slab is free of holes and cracks. Frame is sitting flush on top slab. Basin replaced or repaired to design standards. No cracks more than 1 /4 inch wide at the joint of inlet/outlet pipe. Basin replaced or repaired to design standards. NO. 5 -CATCH BASINS (CONTINUED) ,J :t11ttoo'ii JNheii il\lla1nteifan1:e:Jiif,:tx.w)1,y,\ff /ije,su !tii' e,t ei:ted Wtien i'. ;,,,,;ltiiili!tl~f ~tililll~f f lll1i~!11ltf lli!{~il]f ~1:f t~!tll{f ltf Catch Basin Cover Ladder Metal Grates (If Applicable) Vegetation Pollution Cover Not in Place Locking Mechanism Not Working Cover Difficult to Remove Ladder Rungs Unsafe Trash and Debris Damaged or Missing. Presence of chemicals such as natural gas, oil and gasoline. Vegetation growing across and blocking more than 10% of the basin opening. Vegetation growing in inteVoutlet pipe joints that is more than six inches tall and less than six inches apart. Nonflam·mable chemicals of more than 112 cubic foot per three feet of basin length. Cover is missing or only partially in place. Any open catch basin requires maintenance. Mechanism cannot be opened by on maintenance person with proper tools. Bolts into frame have less than 1/2 inch of thread. One maintenance person cannot remove lid after apptying 80 lbs. of lift; intent is keep cover from sealing off access to maintenance. Ladder is unsafe due to missing rungs, misalignment, rust, cracks, or sharp edges. Grate with opening wider than 7/8 inch. Trash and debris that is blocking more than 20% of grate surface. Grate missing or broken member(s) of the grate. NO. 6 DEBRIS BARRIERS (E.G., TRASH RACKS) General Metal Trash and Debris Damaged/ Missing Bars. Trash or debris that is plugging more than 20% of the openings in the barrier. Bars are bent out of shape more than 3 inches. Bars are missing or entire barrier missing. Bars are loose and rust is causing 50% deterioration to any part of ba'rrier. 10-5 No flammable chemicals present. No vegetation blocking opening to basin. No vegetation or root growth present. No pollution present other than surface film. Catch basin cover is closed Mechanism opens with proper toots. Cover can be removed by one maintenance person. Ladder meets design standards and allows maintenance person safe access. Grate opening meets design standards. Grate free of trash and debris. Grate is in place and meets design standards. Barrier clear to receive capacity flow. Bars in place with no bends more than 3/4 inch. Bars in place according to design. Repair or replace barrier to design standards. NO. 10 -CONVEYANCE SYSTEMS (PIPES & DITCHES) Vegetation Damaged Accumulated sediment that exceeds 20% of the diameter of the pipe. Vegetation that reduces free movement of water through pipes. Protective coating is damaged; rust is causing more than 50% deterioration to any part of pipe. Pipe cleaned of all sediment and debris. All vegetation removed so water flows freely through pipes. Pipe repaired or replaced. Any dent that decreases the crosS section area of Pipe repaired or replaced. Open Ditches Catch Basins Debris Barriers (e.g., Trash Rack) Trash & Debris Sediment Vegetation Erosion Damage to Slopes Rock Lining Out of Place or Missing (If Applicable). pipe by more than 20%. Trash and debris exceeds 1 cubic foot per 1,000 square feet of ditch and slopes. Accumulated sediment that exceeds 20 % of the design depth. Vegetation that reduces free movement of water through ditches. See "Ponds" Standard No. Maintenance person can see native soil beneath the rock lining. See "Catch Basins: Standard No. 5 See "Debris Barriers" Standard No.6 10-6 Trash and debris cleared from ditches. Ditch cleaned/ flushed of all sediment and debris so that rt matches design. Water flows freely through ditches. See "Ponds" Standard No. Replace rocks to design standards. See "Catch Basins" Standard No. 5 See "Debris Barriers" Standard No.6 NO. 13-WATER QUALITY FACILITIES Wetpond Trash and Debris lnleU Outlet Pipe Sediment Accumulation in Pond Bottom Oil Sheen on Water Erosion Settlement of Pond Dike/ Berm Rock Window Overflow Spillway Vegetation such as grass and weeds need to be mowed when it starts to impede aesthetics of pond. Mowing is generally required when height exceeds 18-inches. Mowed vegetation should be removed from areas where it could enter the pond, either when the pond level rises, or by rainfall runoff. Accumulation. that exceeds 1 CF per 1000-SF of pond area. lnleU Outlet pipe clogged with sediment and/ of debris material. Sediment accumulations in pond bottom that exceeds the depth of sediment zone plus 6-inches, usually the first cell. Prevalent and visible oil sheen. Erosion of the pond's side slopes and/ or scouring of the pond bottom, that exceeds 6-inches, or where continued erosion is prevalent. Any part of these components that has settled 4- inches or lower than the design elevation, or inspector determines dike/ berm is unsound. Rock window is clogged with sediment. Rock is missing and soil is exposed at top of spillway or outside slope. /0-7 Vegetation should be mowed to 4 to 5 inches in height. Trees and. bushes should be removed where they are interfering with pond maintenance activities. Trash and debris removed from pond. No clogging or blockage in the inlet and outlet piping. Removal of sediment from pond bottom. Removal of sediment from pond bottom. Slopes should be stabilized by using proper erosion control measures, and repair methods. Dike/ berm is repaired to specifications. Window is free of sediment and debris. Replace rocks to specifications. NO. 13-WATER QUALITY FACILITIES Wetvaults Wetvault Trash/ Debris Accumulation Sediment Accumulation in Vault Damaged Pipes Access Cover Damaged/ Not Working Vault Structure · Damaged Baffles Access Ladder Damage Trash and debris accumulated in vault, pipe or inlet/ outlet, (includes floatables and non- floatables). Sediment accumulation in vault bottom that exceeds the depth of the sediment zone plus 6- inches. lnleV outlet piping damaged or broken and in need of repair. Cover cannot be opened or removed, especially by one person. Vault: Cracks wider than 1/2-inch and any evidence of soil particles entering the structure through the cracks, or maintenance/ inspection personnel determines that the vault is not structurally sound. · Baffles corroding, cracking, warping and/ or showing signs of failure as determined by maintenance/ inspection staff. Ladder is corroded or deteriorated, not functioning properly, missing rungs, has cracks and/ or misaligned. /0-8 Trash and debris removed from vault. Removal of sediment from vault. Pipe repaired and/ or replaced. Pipe repaired or replaced to proper working specifications. No cracks wider than 1/4-inch at the joint of the inleV outlet pipe. Vault is determined to be structurally sound. Repair or replace baffles to specifications. Ladder replaced or repaired to specifications, and is safe to use as determined by inspection personnel. NO. 13-WATER QUALITY FACILITIES Biofiltration Swales Biofiltration swale on Grass Layer Vegetation Inlet Outlet Pipe Trash and Debris Accumulation Erosion/ Scouring When the grass becomes excessively tall (greater than 10-inches); when nuisance weeds and other vegetation starts to take over. Inlet/ outlet pipe clogged with sediment and/ or debris. Trash and debris accumulated in the bio-swale. Where the bio-swale has eroded or scoured the bottom due to flow channelization, or higher flows. J0-9 No sediment deposits on grass layer of the bio-swale, which would impede filtration of runoff. Vegetation is mowed or nuisance vegetation is eradicated, such that flow not impeded. Grass should be mowed to a height between 4 inches and 9 inches. No clogging or blockage in the inlet and outlet piping. Trash and debris removed from bioswale. Bioswale should be re-graded and re-seeded to specification, to eliminate channeled flow. Overseeded when bare spots are evident. 11. 'References King County Department of Natural Resources, 1998. King County Surface Water Design Manual. Seattle. King County Department of Natural Resources, 1997. Lower Cedar River Basin and Nonpoint Pollution Ac/ion Plan. Seattle. King County Department of Parks, Planning, and Resources, 1990. Sensitive Areas Map Folio. Seattle. U.S. Department of Agriculture, Soil Conservation Service, 1973. Soil Survey of King County Area, Washington Seattle. 11-1 EveNldl Plat Preliminarv 71R-June 2001 Appendix A. Downst~eam System Appendix A.I Photographs of the Downstream System Appendix A.2 Drainage Complaints Appendix A.3 Orting Hills Subbasin Map Evenddl Plat Preliminary 11R:..June 2001 V Photo Number 1 Date of Photo: 01/05/01 Location: Existing single-family residence in north oortion of oarcel. Description: The site currently contains one single-family residence, shed, and lawn area. f . ' f "' . "' ..'¥t ,_,;_;::. :z> kl ,t ,.,. ~:.· :,·-; \ili, i)! ,r, .... V Photo Number 2 Date of Photo: 01/05/01 Location: Northwest portion of parcel, looking south. Description: Cover types on the site include mature forest, pasture, lawn, wetland, and a single-family home. Evendell Plat -Offsite Drainage System V Photo Number 3 Date of Photo: I 01/05/01 Location: Description: Location 1 in Figure 5, looking east. A drainage ditch flows to the east along the north boundary of the site and turns south on the site's east bound V Photo Number 4 Date of Photo: Location: Description: 01/05/01 Location 8 in Figure 5, looking north. The open ditch along the east boundary of the site flows to the south along 160th A venue SE. Evendell Plat -Offsite Drainage System V Photo Number 5 V Photo Number 6 Date of Photo: 01/05/01 Date of Photo: 01/05/01 Location: Location 11 in Figure 5, looking south. Location: Location 33 in Figure 5, looking south. Description: After leaving the southeast comer of the site, Description: A drainage ditch flows to the south along the ditch along 160th A venue SE continues to 156th Avenue SE. The ditch has several flow to the south. driveway and road culverts along its oath. };,:,) 41 Evendell Plat -Offsite Drainage System Table A.1. Summary of Downstream Drainage Complaints Complaint Date Property Owner Description of Complaint ' Number 89-0867 13802 160tll Avenue SE Drainage complaint not available. 95-0107 2/01/95 Steve Kohr Broken culvert at entrance to cul-de-sac. 15641 SE 138tll Place 97-0206 1/10/97 Don Gregg Offsite flows impacting private property. ' 16046 SE I 42°d Place Backyard flooded with larger storms. Septic system operation impacted. Investigated for Neighborhood Drainage Assistance Program. 97-0318 14038 56!0 Avenue SE Flooding due to plugged culvert. Drainage complaint is a claim and is not currently available. 97-0423 14028 160tll Avenue SE Roadside flooding -overflow of ditch along 160th A venue SE. Drainage complaint not available. 98-0202 3/19/97 Paul Huff Drainage from neighbor impacting low area of 14312 160tll Avenue SE private property. Evenddl Plat Preliminary TIR-.June 200/ j !--· --1 =· ; I: ' . ' -. --. _i~'--- i' ii ' i ! 2 5 ,· -i. ----. -., . ----· ---- i -i ' ' ' .!" : ., ' -----~9~. -' , _____ ·-----9~6fso_ ! ! . ------···-· _J ! L ' ffiLE 5 l:lt •-,.; ,- ·; I .'.:-J ! r .. ...:: 1 r -, ; I-~·-'' Drainage Complaints -From the Files of KCWLRD llliIU County Water 111111 lmlll Rasoun:as lllYISllln -Dramaua lervlll88 SectlDn Comldalnt Seard! Printed : 12n&'OO 7:36:58 AM l:DmlllBID1 IJJJ Typa al-Adlhslal-l:mnmaldJ Tlrrlll PliP -Cmb 1974-0095 C RIPRAP 15225 JONES RD ROCKS/OIKE/15219 JONES RD/CEDAR RIV 657A4 1974-0096 C RIPRAP 15224 JONES RD ROCK/DIKE/JONES RD/CEDAR RIVER 657A4 1974-0103 C 15631 JONES RD SE W/0 BACKFILUJONES RD 657A4 1974-0106 C ORNG 15005 JONES RD DITCHJALONG CEDAR 657A4 1975-0128 C FLDG 16418 SE 145TH ST STORM SEWERS/BRIARWOOD S 65704 1976-0084 C 156TH PL SE/JONES RD DAMAGE ALONG RD/CEDAR RIVER AREA 657A4 1976-0091 C DEBRI 15463 SE JONES RD CEDAR RIVER 657A4 1979.0090 C DRNG 14406 162ND AV SE 65703 1980-0117 C ORNG 13405 158TH AVE SE 657A2 1981-0316 C 15035 SE JONES RD DIKE JETTY/CEDAR RIVER 657A4 1962-0520 C FLOG 13612 160TH AVE SE 65782 1982-0521 C FLOG 16426 SE 145TH PL BRIARWOOD AREA 65704 1983--0357 C ORNG 14827 SE JONES RD CHNL OVERFLO/MADSEN CRK 657M 1983-0386 C DRNG 15243 SE 132ND ST DRNG DITCH/SE 132ND ST/152ND AVE SE 657A2 1983-0387 C FLDG 14063 171ST AVE SE BRIARWOOD AREA 65783 1984-0224 C FLDG 16211 SE 145TH ST 657B4 1985-0710 E FILL 15035 SE JONES RD KG CTY NOT RESP-WlllnotENF 657A4 1986-0372 C VIOLATE 15817 SE JONES RD MOBILE HOME IN FLOOD PLAIN 657A4 1986-0372 E ILL DVLT 15817 SE JONES RD TO BALD FOR CM(CHK STAT BY CMOT). 657A4 1986-0378 C FLOG 13129 160TH AVE SE BLOCKED DITCH 65782 1966-0437 C CULVERT 15252 SE 142ND Pl INSTALLATION-NEED CB 657A3 1986-0651 C FILUNG 15045 SE JONES RD SEE 86·0745,1158 657A4 1986-0745 C FILL 15045 SE JONES RD ILLEGAL FILL·CEDAR RIVER 657A4 1986-0812 C EROSION 15421 SE JONES RD CEDAR RIVER 657A4 1986-1158 C FLDG 15059 SE JONES RD SEE: 86-0745 BRAMBLETI 86-0745 657A4 1967-0430 C TRFD TO SWM-FM/RD DRNG. 65782 1987-0430 ER OH/SWM DIV Pl Y. 65782 1987--0430 NOA OH/SWM DIV PLY. 65782 1987--0496 C DRNG 16423 SE 135TH ST SEEPAGE 65782 1987-0589 C SEE 87-0430 WILSON. 65782 1987-0593 C ORNG 16904 SE 136TH ST DRNG ESMT WATER/DITCH NEEDS MAINT 65702 1987-1001 X Fill 16861 SE JONES RD ILLEGAL FILL IN FLOPLAIN 657B4 1988-0377 C DRNG 14250 161ST AVE SE HAZARDOUS PONO OH/TO CM. 06/10/89 65783 1969-0020 C FILL 134_00 168TH AVE SE NEAR ORNG CHNL 65782 1989-0086 C ORNG 14820 154TH PL SE INST ALU NG DRAINAGE 657A4 1989-0863 C DRNG 13224 168TH AVE SE DITCH CLEANING/LOSING YARD 65782 1989-0867 CL DRNG 13802 160TH AVE SE CL#12735 DUE APRIL 65782 Page1 ol4 Tm.E ii~OZO~J' i:f'IICiiii'li:'.i:'.~11'1(!, lW .i Drainage Complaints -From the Files of KCWLRD ~ lff'I l!J'IDI-Allllrmafl'rdl!zm -Ins Prlill lllm::I' Co1!J 1993-0724 C FLOG 13516 164TH AVE SE FLOODING 65782 1993-0724 RN FLOG 13516 164THAVE SE FLOODING JN WETLAND ON PROPERTY 65782 1993-0752 woe DUMPING 16861 SE JONES RD 65784 1993-0752 WOE DUMPING 16861 SE JONES RD SEDIMENT FROM WELL DRILLING 65784 1993--1063 C HOLE 16519 SE 149TH ST HOLE IN ROAD SHOULDER 65784 1994-0326 C ORNG 13200 156TH AVEY RD SE NEW UPSTREAM CONSTRUCTION -WILL 657A2 1994-0538 C HAZARD 16519 SE 149TH ST NEW KC DITCH IN YARD IS A HAZARD 65784 1994-1011 C ORNG SE 132ND & 156TH A SE DIRECT DISCHARGE FROM PLAT OEVELO 657A2 1995-0107 C CULVERT? 15641 SE 138TH Pl POSSIBLE GROUNDWATER IMPACT Tb ·g 65783 1995-0715 C RUNOFF 164)()( SE 135TH ST ROAD CULVERT DISCHARGE HIST DRNG 65782 1995-0907 C DRAINAGE 13100 164THAVE SE LACK OF CONVEYANCE IN UNOPENED R/ 65782 1995-0907 R DRAINAGE 13100 164TH AVE SE LACK OF CONVEYANCE IN UNOPENED R/ 65702 199S..1070 C CREEK 15915 SE 148TH ST STREAM FLOW INFO REQUEST 65784 1996-0039 C DRNG 15609 SE 128TH ST NO INFORMATION AVAILABLE 65782 1996-0289 C FLOG 15225 162ND AVE SE GROUNDWATER STREAM IMPACT PVT PR 65784 1996-0289 R FLOG 15225 162ND AVE SE GROUNDWATER STREAM IMPACT PVT PR 65784 1996-0376 CD SEEPAGE 15225 162ND AVE SE SEE 96-0289 DUP 65784 1996-0556 C RUNOFF 14301 166TH Pl SE APPARENT GROUNDWATER SURFACING 65783 1996-0556 R RUNOFF 14301 166TH Pl SE APPARENT GROUNDWATER SURFACING 65783 1996-0869 C FLOG 15035 SE JONES Rb HIGH FLOW PONDING PVT PROP NO OUT 657M 1996-0869 NOA FLOG 15035 SE JONES RD HIGH FLOW PONDING PVT PROP NO OUT 657A4 1996-0869 R FLOG 15035 SE JONES RO HIGH FLOW PONDING PVT PROP NO OUT 657M 1996-0870 C R/0 PONO 15XXX SE 143RD ST KIDS USING PONO FOR DIRT BIKES 657A3 1996-1050 CL FLOG 15010 156TH Pl SE RElMBURSMENT FOR CLEAN UP WORK IN 657A4 1996-1253 C DRNGIPIP 15226 162ND AVE SE PVT ORNG INSTALLATION IMPACT ROAD? 65784 1996-1253 NDA ORNGIPIP 15226 162ND AVE SE PVT ORNG INSTALLATION IMPACT ROAD? 65784 1996-1253 R DRNG/PJP 15226 162ND AVE SE PVT DRNG INSTALLATION IMPACT ROAD? 65784 1996-1557 WQA CONSULT 13203 156TH AVE SE BCW SITE CONSULTATION 657A2 1996-1724 C FLOG 14206 164TH AVE SE OFFSITE FLOW IMPACTING PVT PROP 65783 1996-1762 C FLOG 15059 SE JONES RD DAMAGE TO ORNG OUTFALL TO CEDAR R 657A4 1997-0056 C DITCH 13215 154TH AVE SE 657A2 1997-0056 R DITCH 13215 154TH AVE SE 657A2 1997-0203 C FLOG 14028 160TH AVE SE OVERFLOW FROM D/W CULV IMPACT PVT 65783 1997-0206 C FLOG 16046 SE 142ND PL OFFSITE FLOW IMPACTING PRIVATE PRO 65783 1997-0206 NDA FLOG 16046 SE 142ND PL OFFSITE FLOW IMPACTING PRIVATE PRO 65783 1997-0206 R FLOG 16046 SE 142ND PL OFFSITE FLOW IMPACTING PRIVATE PRO 65783 1997-0318 CL CLAIM 14038 56THAVE SE FLOODING DUE TO PLUGGED CUL VERT 657A3 1997-0423 CL FLOG 14028 160TH AVE SE ROADSIDE DITCH OVERFLOW-160TH AVE 65763 1997-0484 C DRAINAGE 15701 138TH Pl SE PROPERTY DEV CONCERNS PVT ORNG 657A3 1997-0524 C EROSION 14631 156TH AVE SE NATURAL SLIDE AREA ADJACENT TO PIP 657A4 Page 3 of 4 TITlE i1110ZO~J [Ji'lQHNJ!e.tm~<GJ. IP' ..$J. Drainage Complaints -From the Files of KCWLRD J~. 8.2001 5: 03'1"1. KC WLRD N0.642 KING COUNTY SURFACE WATER MANAGEMENT DMSION DRAINAGE INVESTIGATION REPORT Type ....::C:,..__ Pogo 1: INVESl1GATION'REO\J6ST Dato: :1./• /q5 OK'd by: FieNo. 95-0107 (PIMN PMt p&alnty fof Kal'lnTnQI}. NAME: /(oh r ;S'"le(r:-(r,.1lf'e • .shellt i, ho,,-,e.) -1-1 ...... PHONE ~35-1697 ADDRESS: /51.'f/ SI; 138 ....... pl-. C1ty, _____ _ State __ Zip:__ __ LocelJon of problem, I r:111 ... 111: Plat name: lft>se. ~"'"'7.5 Ade/ Other agencies tnvofved: ~ J!L_ .2.$ ....,2_ Parcel No.' 7'{/gDO 01/0 1/4ST R Basin~ Councll Dist rz. Charge No: LJJt No: JI Block No: No Field Investigation Needed __ _ - Kron 811 £ Th.Bms: Now 65? 83 Old 3s r1, RESPONSE:· CMzen notlfted' on ___ by _ phone _ letter _ In person DISPOsmoN: Turned to ___ on _____ by __ _ OR: No further action recomrnended becal.J$1 _ Lead agency has beeh notified:-----------------------~==~ _ Problem has bean corrected. _ No problern has been idemriied. Prior lnvestlgatton addresses problem -PrtvaJe problem -NDAP will not consid.r because: _ Water originates onslte and/or on neighboring parcel _ L.oc:atk,n is outskie SWM Service Area. OATIS CLOSED:__;__/__/__ by; -- T1ll.E -s.. F'il• ··----''--- -Otha< (Specify): Drainage Complaints -From the Files of KCWLRD Ju-t. a. 2001 s: 04PM KC "-RD Complaint 97-206; Don Gr&1U, 16046 SE 142""' PJ .• Renton Investigated by· Scan Groom on 01/14/97 N0.642 P.4/9 Don Greig hu lived at the above refeml.ced lOC8ti011. Ellcc the early 60s (his house was second built in the dcvdopmtt1Q. Surf&C'C stonn water 1IO'WI began flooding his garage approximately fh-c years ago. At his own c,cpense •t that titne he brought a baclt hoc In to cut a d:ainagc' ditch along the baclc side of bis property. Tb.is open trcncb proviks td.lef during moc:r. pzedpltadon ow:a'br surface waru moves IU'01ll'ld his prcpcny. Storm water docs breech the top occasionally. Tbc ditch 1llls ...um.ms up and be clears 1hc di!Ch af' mtm 11m floau Oowll and reduces flow. He walks the dndnap ditch durhJ&' stmm naits (he WDSD 't around fur the lase storm ~ to ~ its functionality as a p!CC8'01ion as well. He: wants the drainqc to cantinuc down 160111 Ave SE instead ar a COJM!)'aDc:e system a1'0U!ld his aD4 ncighbor"1 ptOpCrty. Appatmdy, as dcvdopmcut :DOJt.b arhis propcny_has fncrc,.scd addiUonal runotrfs CODCCDtrattd iJlto the drainage along 16001 Ave SB and snbscq_ucntly runS'to his property. 160" Ave S.E. S--. nmolfl<om 160°' A.,. SE dlsclwps Into tbls azea. Low p<r<Olation. °""" said the laDd can't be dewloped · 'bcc:aa!e lbcy don't have the pe=latiou for :inflltratiop cf Kptic systems. SE 142nd Place ·-..... .. Drainage Complaints -From the Files of KCWLRD JF'.f'i. 8.2001 5:05PM KC "-RD N0.642 P.6/9 97-JO~ He regueatod. that the d.rainag• flowing aouth lllOf\9 the eaat elda of 160th Avanu.e sz bo ro.routed •~ralght aouth •long tbe eost side of 1eoth paet SE 1~2nd PlQco r«thor thon the i;rurront routo whioh ~lowo DAat and eoutb a.rou~ hia property. Mr. CrCL99 atatad. that eavacal. long to~ rea1doota bavo told him tba drt/t'aqo used to flow straight aoutb alo,:,.g th• wa•t &Rd eoat a1.d.ea of 160 all th• way down to SH 144th. I atatod that may be true but tb• oxiating drainaqe pattern 1• old and cannct be r•vi••d b•cauaa it ia eonaidarwd the aatal)liabod: drainage pattorrt for hi• area. I reviewed hie and his two neighbor• a drainage rol11t«\ 1.mpo.cta Gild · &cored tb• problem 11t 14 with biD 9arave and oaptlc a,yatem impacta And yard dmnnga to tvo propertioa. Although the laat few yearn b.aTII been eapeciall:, -t and ~ad, :r ratlNI tho eYOnt frequency at 10 OJ:' ono• ~ry 2-5 yea.ra vbioh ia my oDtimate of tha frequ.01\Cy of how oft.an hi• •apt.lo ayatem will ba D9'V'Qr9ly impaetod cYer thO lon9 ta%Dl. JU'. c:r499 atated that bia pmriped effluent aapt.ic ayatam ha.a lttl~k•d fino tor th.Ct ti.rat 15 yoer8. HOWDvar, ha has ~ed up four pumpD witbJ.n the la.at three yvara due to the 1.ncreaaed grou.adwater ~low• into hi• •optic tank/drlli.nfieid art.a. From hie vct/d.ry eeaecn obeervationa, he lo convinced that mout of tha groundwater canes from tba drai.nage di~ch looated just above hie drainfi•ld. we reviewed way• of protect.ing his eeptio dx:'ai.o.field from the inovement of groundwater froai the uphill pond and drainage ditch. We di•<Naeed waye to eeal tho earthen ditch it•alf u•inV a plaatic liner or a Large half round or ~ull pipe aection• along abol.it 50 feet of ditch abova hi• drainfi6ld. I pointed out that eonaiderable 9roundwator may atill ~low rrom north to eouth below th• d~tcn eeotion eo that oeali.ng tho ditch ~•Y tlOt aolve the problam. Depending on the depth to hardpan, an impervicue vertical layer cf plastic or bentonita slurry located uphill cf bi• drainfield betweett hie drai.nfield IIAd. tho ditch would probably b• th• aADi••t D:id. meat affective aolution to thia PTOhlein. Thi• impe.rviouo layar would run from tha oround aurfaca down to the hardpan layer where it would be keyed down into the hardpan loyar. Bacnuae auch a layer "°1.lld raatrict the flow cf ground water, higher grou.ndwater levela mi9ht reault in thia part of Gragg•• yard with more grcunctwater aur:facing du.rift9 'Che·wot ••••on aspacia.lly near eocb and cf aueb on impor9iouo wall raaultiffg in mo~o wot eeaacn •urface wa~er •••page/flowa &ftd icy conditio~• en portions cf Mr. Cragg'• drivaway. J'O't' ui.y work thia oloee to the drninf~•~d. a.ny yard drain er imparviouD facility of thia ki.nd would ~•va to ba reviewed and eppro•lltd. by the Xin9 County Haa1th o.partmant (Wayna Olson at 296-9737). 2 ... Drainage Complaints -From the Files of KCWLRD J~. 8.2001 5' "5!!:liG-E!'S ... ~ WATER AND LAlm.RE,sOVRCES DIVIS':'2:~ P.8/9 DC -DRAINAGE INVEsTIGA TION REPORT - PROBLEM: 'tk/Uff!Q~f.) Page I: INvE.snOATlONR.EQUEST Type C. R.fil:t;1Ym2 ax: /Ua..~~\~ Da~· ?11,q Ot'dby· ~ f(Ll;~Q1 f,f..:J,2.~ Received from: (Day) 141-51 (Eve) ' } NAM£: ]?fm.,1 1-lvf'P PttONE 2'7 f -<71?1?2 AooREss· . I "t"';wz_. I Ct-0 '""' ,.-vG. St:-Cl~~n,c:,J s1a,e_ z;pC/~?:0 Location of problem, if diiferent: Reported Problem: CALL nRST IIJ (Would like To ~e P~sent) ·NG,G>1-1-&m ... c,N Nt'!'..,rl+~G. r.; 11e:r., .,")a op.: 12-TY' 1,'vl,11 \..)1 ~. n-'1-SN 'VJ<vE'.i) ()}Gf!. TI-I'S l'--ia.£1\ , "\\ rt-,l I<. '{ klt.l) N;)W <;.\.1··, \h~_'.ftb"'.'I.'..... n-,AN fl-ti:; ,~_.,::::i= 'S. A,..,D t.1.-1-CP'I" T\+B:I~. T)~,J'n rv AC~"'E I..:.":., 6oNC> or,,;-:rv n-1-G l -h.; 1=-F \ ..:'.., f.>14"[}1:.ZTY ( ~· Vkl'-DJ. t,J6c:.--U T.k. Plat name: {3aa,z 4_.eSae~ Lot No: 3 BlockNo:J Other agencies involved: No field investigation required_ ,.~-. C~n-kials! TO DE COMPLETED 'BY C0¥PLAINTJ'.P:OGR.AM STAFF .. . . :: . ·-.. . .-.... ··· .. · ' ~ 14-...,ll :::L .. V. S .T R Paree! No. J.iJ,'(ZftJ0/:2,) Kroll !J/£ Tb.BJ'Os: New d,/f76._3 Old c3SF(., Basin·£CIP Council District /.:<, ¢lwaeNo. RESPONSE: Citizen notified on by: __ phone. __ 1=;,-__ m·penon .Q\'e. c...k-o.1 0"4,-k. ?'"''~ F."'l-.., <;,...._,_;J ,;)..y....,...(( &,d-.... '( c.... b,:,-.:dl . c.::,,--0 'h - DlSP(?SlTION: Turned to --on I I by__ OR: No further action recommended because: __ Lead agency bu been notified: --Problem hos been corrected. _ No problem has ~en identified. __ Prior investigation addres.sCI J)t'Oblcm: ~ Private probx51 • NDAP ."'?" not co~sider bccau$e; . . SuF1Ltlf · \\later ong1nates ons1te and/or on nc1ghbonng parcel. __ Location is outside WLRD SW'". __ Othc:r (Specify): DATE CLOSED: '( 1 f (, I ff By: /liff,ldJ;J 1TTl.E lriliOZO'i!J fl11:imlECltml!Q. IP' .1 Drainage Complaints -From the Files of KCWLRD ' 8 ~ --.-!.-----o,S.ii " /l .- / \~ Location Map ... ~ J3 • • • • • • • • • • M@p~ew@od & Orting Hills Subbasil'il Conditions Cedar River Basin Planning Area Map20 ~~!!.. Stream & Stream Number ~ lake/River uo Stream Mile 5 ~ Wetland & Wetland Number -··· Subbosin Boundary ---Catchment Boundary MWl Catchment Number @/E:3 . Problem Location/ Areo m Areawide Nonpoinl Water Guolity P,oblem ~ Wetland Habitat Problem 8 Stream Habitat Problem ~ Erosion/Sedimentation c=:J @ locally Significant Resource Area @iii Flooding ' • ·- -- Appendix B. Storniwater RID System Design Appendix B.I Stonnwater Facility Control and Overflow Design Appendix B.2 KCRTS.Pond Design Evenddl l'lal Pn:Uminary 77R-.lune 21101 Appendix B.1 Stonnwater Facility Controland Overflow Design Evmddl Plat Preliminary 77R-Jime 2001 Appendix B.2 KCRTS Pond Design East Basin -Retention/Detention Facility Type of Facility: Side Slope: Pond Bottom Length: Pond Bottom Width: Pond Bottom Area: Top Area at 1 ft. FB: Detention Pond 3.00 H:lV 167.00 ft 58.00 ft 9686. sq. ft 23762. ·sq. ft Effective Storage Depth: 0.546 acres 7. 50 ft 452.00 ft Stage O Elevation: Storage Volume: Riser Head: Riser Diameter: Number of orifices: Orifice # Height (ft) 1 0.00 2 5.50 3 5.90 Top Notch Weir: Outflow Rating Curve: 115676. cu. ft 2.656 ac-ft 7. 50 ft 18.00 inches 3 Diameter (in) 1.50 2.30 2.80 None None. Full Head Discharge (CFS) 0.167 0.203 0.269 Pipe Diameter (in) 6.0 6.0 Hyd Inflow Outflow Peak Stage 7.60 7.13 6.65 6.47 Storage 1 3.53 1.10 2 1. 74 0.58 3 2.09 0.50 4 1. 74 0. 46 5 1. 84 0.21 6 1. 50 0.11 7 1. 40 0.13 8 1. 09 0.14 Hyd R/D Facility Tributary Outflow Inflow 1 1.10 0 .16 2 0.58 0.08 3 0.50 0.09 4 0. 4 6 0.08 5 0.21 0.09 6 0.11 0.08 7 0.13 0.07 8 0.14 0.05 Evenddl Pia/ Preliminary TIR-June 2001 5. 72 3.30 4.41 5.11 Elev 459.60 459.13 458.65 4 58. 4 7 457. 72 455.30 4 56. 41 457.11 Reservoir Inflow ******** ******** ******** ******** ******** ******** ******** ******** (Cu-Ft) (Ac-Ft) 117770. 2.704 107632. 2.471 97838. 2.246 94092. 2.160 79774. 1.831 39784. 0.913 56865. 1.305 68647. 1.576 POC Outflow Target Cale ******* 1.13 ******* 0.61 ******* 0.52 ******* 0.47 ******* 0.21 ******* 0.18 ******* 0.18 ******* 0.17 West Basin -Retention/Detention Facility Type of Facility: Facility Length: Facility Width: Facility Area: Effective Storage Depth: Stage 0 Elevation: Storage Volume: Riser Head: Riser Diameter: Number of orifices: Orifice # Height (ft) 1 0.00 2 4.75 Top Notch Weir: Length: Weir Height: Outflow Rating Curve: Hyd Inflow Outflow Detention Vault 80.00 25.00 2000. 9.00 470.00 18000. 9.00 12.00 2 Diameter (in) 0.70 1. 30 ft ft sq. ft ft ft cu. ft ft inches Full Head Discharge (CFS) 0.040 0. 094 Rectangular 3.00 in 8.90 ft None Pipe Diameter (in) 4.0 Storage Peak Stage Elev 478.96 477.61 476.91 476.00 476.07 4 73 .11 472.40 473.97 (Cu-Ft) (Ac-Ft) 1 0. 60 2 0.29 3 0.30 4 0.31 5 0.35 6 0.26 7 0.31 8 0.24 Hyd R/D Facility Outflow 1 0.15 2 0.11 3 0.10 4 0.08 5 0.09 6 0.02 7 0.02 8 0.03 0.15 0.11 0.10 0.08 0.09 0.02 0.02 0.03 Tributary Inflow 0.09 0.05 0.05 0.05 0.05 0.05 0.06 0.04 8. 96 7.61 6.91 6.00 6.07 3.11 2. 40 3. 97 Reservoir Inflow ******** ******** ******** ******** *******"' ******** ******** ******** Route Time Series through Facility Inflow Time Series File:devwest.tsf Outflow Time Series File:rdoutw POC Time Series File:pocwest Inflow/Outflow Analysis Peak Inflow Discharge: 0.595 CFS Peak Outflow Discharge: 0.146 CFS Peak Reservoir Stage: 8.96 Ft Peak Reservoir Elev: 478.96 Ft 17921. 0.411 15219. 0.349 13815. 0.317 12009. 0.276 12133. 0.279 6214. 0.143 4797. 0.110 7942. 0.182 POC Outflow Target Cale ******* 0.20 ******* 0.14 ******* 0 .13 ******* 0.11 ******* 0.11 ******* 0.07 ******* 0.07 ******* 0.06 at 6:00 on Jan 9 in at 11:00 on Jan 9 in Peak Reservoir Storage: 17921. Cu-Ft o. 411 Ac-Ft Evau/dl l'tl1t heliminary 77R-June 2001 Year 8 Year 8 Appendix C. Conveyance Calc~latiomi Appendix C.l Stormwater System Conveyance Appendix C.2 KCRTS Time Series Calculations Appendix C.3 KCRTS :peak Flow Rates Ew,ndd/ Pio/ Preliminary 17R-.hme 2001 Appendix C.l Stormwater System Conveyance Evenddl Plat Preliminary TJR-June 2001 Appendix C.2 KCRTS Time Series Calculations KCRTS Command CREATE a new Time Series Production of Runoff Time Series Project .Location : Sea-Tac Computing Series exeast.tsf Regional Scale Factor : 1.00 Data Type : Reduced Creating Hourly Time Series File Loading Time Series File:C:\KC_SWDM\KC_DATA\STTF60R.rnf 7.78 acres Till Forest Till Pasture Impervious Loading Time Series File:C:\KC_SWDM\KC_DATA\STTP60R.rnf 2.74 acres Loading Time Series File:C:\KC_SWDM\KC DATA\STEI60R.rnf 0.09 acres Total Area 10.61 acres Peak Discharge: 0.970 CFS at 9:00 on Jan 9 in Year 8 Storing Time Series File:exeast.tsf Time Series Computed KCRTS Command Enter the Analysis TOOLS Module Analysis Tools Command Compute PEAKS and Flow Frequencies Loading Stage/Discharge curve:exeast.tsf Flow Frequency Analysis -------------------------------------------------------- Time Series File:exeast.tsf Project Location:Sea-Tac Frequencies & Peaks saved to File:exeast.pks Analysis Tools Command Compute Flow DURATION and Exceedence Loading Time Series File:exeast.tsf Computing Interval Locations Computing Flow Durations Durations & Exceedence Probabilities to File:exeast.dur Evmddl Pfat Preliminary 17R-June 2001 Analysis Tools Command RETURN to Previous Menu KCRTS Command CREATE a new Time Series Runoff Time Series Project Location : Production of Sea-Tac deveast. tsf 1. 00 Computing Series Regional Scale Factor: Data Type: Reduced Creating Hourly Time Series File Loading Time Series File:C:\KC SWDM\KC DATA\STTG60R.rnf 3.82 acres Till Grass Impervious Loading Time Series File:C:\KC_SWDM\KC_DATA\STEI60R.rnf 6.13 acres Total Area 9.95 acres Peak Discharge: 3.70 CFS at 6:00 on Jan 9 in Year 8 Storing Time Series File:deveast.tsf Time Series Computed KCRTS Command Enter the Analysis TOOLS Module ------------------------------- Analysis Tools Command Compute PEAKS and Flow Frequencies ---------------------------------- Loading Stage/Discharge curve:deveast.tsf Flow Frequency Analysis -------------------------------------------------------- Time Series File:deveast.tsf Project Location:Sea-Tac Frequencies & Peaks saved to File:deveast.pks Analysis Tools Command Compute Flow DURATION and Exceedence ------------------------------------ Loading Time Series File:deveast.tsf Computing Interval Locations Computing Flow Durations Durations & Exceedence Probabilities to File:deveast.dur Analysis Tools Command RETURN to Previous Menu KCRTS Command CREATE a new Time Series Production of Runoff Time Series Project Location : Sea-Tac Computing Series byeast.tsf Regional Scale Factor: 1.00 Data Type : Reduced Creating Hourly Time Series File Loading Time Series File:C:\KC_SWDM\KC_DATA\STTG60R.rnf Till Grass 0.32 acres Loading Time Series File:C:\KC_SWDM\KC_DATA\STEI60R.rnf Evmde/1 Plat Pn,/iminory 17R-June 200/ Impervious 0.36 acres Total Area 0.68 acres Peak Discharge: 0.238 CFS at 6:00 on Jan 9 in Year 8 Storing Time Series File:byeast.tsf Time Series Computed KCRTS Command Enter the Analysis TOOLS Module Analysis Tools Command Compute PEAKS and Flow Frequencies Loading Stage/Discharge curve:byeast.tsf Flow Frequency Analysis Time Series File:byeast.tsf Project Location:Sea-Tac Frequencies & Peaks saved to File:byeast.pks Analysis Tools Command Compute Flow DURATION and Exceedence Loading Time Series File:byeast.tsf Computing Interval Locations Computing Flow Durations Durations & Exceedence Probabilities to File:byeast.dur Analysis Tools Command ' ---------------------- RETURN to Previous Menu KCRTS Command CREATE a new Time Series Production of Runoff Time Series Project Lqcation Sea-Tac Computing.Series exwest.tsf Regional Scale Factor : 1.00 Data Type : Reduced Creating Hourly Time Series File Loading Time Series File:C:\KC_SWDM\KC_DATA\STTF60R.rnf Till Forest 0.26 acres Till Pasture Impervious Loading Time Series 1. 80 acres Loading Time Series 0.12 acres Total Area 2.18 acres File:C:\KC SWDM\KC DATA\tTTP60R.rnf -- File:C:\KC_SWDM\KC_DATA\STEI60R.rnf Peak Discharge: 0.293 CFS at 6:00 on Jan 9 in Year 8 Evoulal Plat Preliminary 11R-June 2001 Storing Time Series File:exwest.tsf Time Series Computed -------------~----------------- KCRTS Command Enter the Analysis TOOLS Module Analysis Tools Command Compute PEAKS and Flow Frequencies Loading Stage/Discharge curve:exwest.tsf Flow Frequency Analysis Time Series File:exwest.tsf Project Location:Sea-Tac Frequencies & Peaks saved to File:exwest.pks Analysis Tools Command Compute Flow DURATION and Exceedence Loading Time Series File:exwest.tsf Computing Interval Locations Computing Flow Durations Durations & Exceedence Probabilities to File:exwest.dur Project Location: Computing Series Regional Scale Factor : Analysis Tools Command RETURN to Previous Menu KCRTS Command CREATE a new Time Series Production of Runoff Time Series Sea-Tac devwest.tsf 1. 00 Data Type : Reduced Creating Hourly Time Series File Loading Time Series File:C:\KC_SWDM\KC_DATA\STTGGOR.rnf File:C:\KC SWDM\KC DATA\STEIGOR.rnf Till Grass 0.81 acres Loading Time Series --Impervious 1.19 acres Total Area 2.00 acres Peak Discharge: 0.734 CFS at 6:00 on Jan 9 in Year 8 EVt!,u/d/ Plat Preliminary 71R-.hme 21101 Storing Time Series File:devwest.tsf Time Series Computed KCRTS Command Enter the Analysis TOOLS Module Analysis Tools Cornmand Compute PEAKS and Flow Frequencies Loading Stage/Discharge curve:devwest.tsf Flow Frequency Analysis -------------------------------------------------------- Time Series File:devwest.tsf Project Location:Sea-Tac Frequencies & Peaks saved to File:devwest.pks Analysis Tools Command Compute Flow DURATION and Exceedence Loading Time Series File:devwest.tsf Computing Interval Locations Computing Flow Durations Durations & Exceedence Probabilities to File:devwest.dur Analysis Tools Command RETURN to Previous Menu KCRTS Command CREATE a new Time Series Production of Runoff Time Series Project Location : Sea-Tac Computing Series byWest.tsf Regional Scale Factor : 1.00 Data Type : Reduced Creating Hourly Time Series File Loading Time Series File:C:\KC SWDM\KC DATA\STEI60R.rnf Impervious 0.16 acres Total Area 0.16 acres Peak Discharge: 0.076 CFS at 6:00 on Jan 9 in Year 8 Storing Time Series File:bywest.tsf Time Series Computed KCRTS Command Enter the Analysis TOOLS Module ------------------------------- Analysis Tools Command Compute PEAKS and Flow Frequencies ---------------------------------- Loading Stage/Discharge curve:bywest.tsf Flow Frequency Analysis -------------------------------------------------------- Time Series File:bywest.tsf Project Location:Sea-Tac Frequencies & Peaks saved to File:bywest.pks Analysis Tools Command Compute Flow DURATION and Exceedence ------------------------------------ Evenddl Plat Preliminary 77R -June 200 I Loading Time Series File:bywest.tsf Computing Interval Locations Computing Flow Durations Durations & Exceedence Probabilities to File:bywest.dur EvauJd/ l'f,s Prelimu,ary 77R-.lune 2001 Analysis Tools Command RETORN to Previous Menu KCRTS Command eXit KCRTS Program Appendix C.3 KCRTS·PeakFlow Rates' , . · · Flow Frequency Analysis Time Series File:exeast.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--- Flow Rate Rank Time of Peak (CFS) 0.645 2 2/09/01 18:00 0.200 7 1/05/02 16:00 0.517 3 2/28/03 3:00 0.037 8 3/24/04 19:00 0.303 6 1/05/05 8:00 0.508 4 1/18/06 20:00 0.457 5 11/24/06 4:00 0.891 1 1/09/08 9:00 Computed Peaks Flow Frequency Analysis Time Series File:exwest.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--- Flow Rate Rank Time of Peak (CFS) 0.138 2 2/09/01 18:00 0.059 7 1/05/02 16:00 0.129 3 2/28/03 3:00 0.024 8 8/26/04 2:00 .0. 074 6 1/05/05 8:00 0.122 4 1/18/06 16:00 0.116 5 11/24/06. 4:00 0. 235 1 1/09/08 6:00 Computed Peaks Flow Frequency Analysis Time Series.File:deveast.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--- Flow Rate Rank Time of Peak (CFS) 1. 74 6 2/09/01 2:00 1. 40 8 1/05/02 16:00 2.09 3 2/27/03 7:00 1. 50 7 8/26/04 2:00 1. 80 5 10/28/04 16:00 1. 84 4 1/18/06 16:00 2.17 2 10/26/06 0:00 3.53 1 1/09/08 6:00 Computed Peaks Evenddl Plat Preliminary 77R-June 2001 -----Flow Frequency Analysis------- Rank Return Prob Period· --Peaks (CFS) 0.891 0.645 0.517 0.508 0. 457 0.303 0.200 0.037 0.809 1 2 3 4 5 6 7 8 100.00 25.00 10.00 5.00 3.00 2.00 1.30 1.10 50.00 0.990 o. 960 0.900 o. 800 0. 667 0.500 0.231 0.091 0.980 -----Flow Frequency Analysis------- -Peaks Rank Return Prob (CFS) Period 0.235 1 100.00 0.990 0 .138 2 25.00 0.960 0.129 3 10.00 0.900 0.122 4 5.00 0.800 0.116 5 3.00 0. 667 0.074 6 2.00 0.500 0.059 7 1.30 0.231 0.024 8 1.10 0.091 0.202 50.00 0.980 -----Flow Frequency Analysis------- -Peaks Rank Return Prob (CFS) Period 3.53 1 100.00 0.990 2.17 2 25.00 0.960 2.09 3 10.00 0.900 1.84 4 5.00 0.800 1. 80 5 3.00 0. 667 1. 74 6 2.00 0.500 1.50 7 1. 30 0.231 1. 40 8 1.10 0.091 3.08 50.00 0.980 Flow Frequency Analysis Time Series File:devwest.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--------Flow Frequency Analysis------- Flow Rate Rank Time of Peak -Peaks Rank Return Prob (CFS) (CFS) Period 0.294 6 2/09/01 2:00 0.595 1 100.00 0.990 0.240 8 1/05/02 16:00 0.378 2 25.00 0. 960 0. 354 3 2/27/03 7:00 0.354 3 10.00 0.900 0.260 7 8/26/04 2:00 0.313 4 5.00 0.800 0.313 4 10/28/04 16: 00 0.312 5 3.00 0. 667 0.312 5 1/18/06 16:00 0.294 6 2.00 0.500 0.378 2 10/26/06 0:00 0.260 7 1. 30 0.231 0.595 1 1/09/08 6:00 0.240 8 1.10 0.091 Computed Peaks 0.523 50.00 0.980 Flow Frequency Analysis Time Series File:byeast.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--------Flow Frequency Analysis------- Flow Rate Rank Time of Peak -Peaks Rank Return Prob (CFS) (CFS) Period 0.080 7 2/09/01 2:00 0.156 1 100.00 0.990 0.070 8 1/05/02 16:00 0.120 2 25.00 0. 960 0. 098 3 12/08/02 18:00 0.098 3 10.00 0.900 0.082 6 8/26/04 2:00 0.097 4 5.00 0.800 0.097 4 10/28/04 16:00 0.085 5 3.00 0.667 0.085 5 1/18/06 16:00 0.082 6 2.00 0.500 0.120 2 10/26/06 0:00 0.080 7 1. 30 0.231 0.156 1 1/09/08 6:00 0.070 8 1.10 0.091 Computed Peaks 0.144 50.00 0.980 Flow Frequency Analysis Time Series File:bywest.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--------Flow Frequency Analysis------- Flow Rate Rank Time of Peak -Peaks Rank Return Prob (CFS) (CFS) Period 0.046 7 2/09/01 2:00 0.090 1 100.00 0.990 0.040 8 1/05/02 16:00 0.069 2 25.00 0.960 0.056 3 12/08/02 18:00 0.056 3 10.00 0.900 0.047 6 8/26/04 2:00 0.056 4 5.00 0.800 0.056 4 10/28/04 16:00 o. 049 5 3.00 0.667 0.049 5 1/18/06 16:00 0.047 6 2.00 0.500 0.069 2 10/26/06 0:00 0.046 7 1. 30 0.231 0.090 1 1/09/08 6:00 0.040 8 1.10 0.091 Computed Peaks 0.083 50.00 0.980 Evnuldl Plat Prelmrinary T1R-Jw,e 2001 Flow Frequency Analysis Time Series File:poceast.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--------Flow Frequency Analysis------- Flow Rate Rank Time of Peak -Peaks Rank Return Prob (CFS) (CFS) Period 0. 611 2 2/09/01 19:00 1.13 1 100.00 0.990 0.177 7 1/05/02 16:00 0. 611 2 25.00 0.960 0. 517 3 3/06/03 20:00 0.517 3 10.00 0.900 0.182 6 8/26/04 2:00 o. 472 4 5.00 0.800 0.173 8 1/05/05 8:00 0.214 5 3.00 0. 667 o. 214 5 1/19/06 2:00 0.182 6 2.00 0.500 o. 472 4 11/24./06 6:00 0.177 7 1.30 0.231 1.13 1 1/09/08 11: 00 0.173 8 1.10 0. 091 Computed Peaks 0.955 50.00 0. 980 Flow Frequency Analysis Time Series File:pocwest.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--------Flow Frequency Analysis------- Flow Rate Rank Time of Peak -Peaks Rank Return Prob (CFS) (CFS) Period 0 .140 2 2/09/01 18:00 0.197 1 10.0. 00 0.990 0.059 8 1/05/02 16:00 0.140 2 25.00 0.960 0.110 4 3/06/03 19:00 0 .135 3 10.00 0. 900 0. 067 7 8/26/04 2:00 0.110 4 5.00 0.800 0.068 6 10/28/04 16:00 0 .107 5 3.00 0. 667 0.107 5 1/18/06 20:00 0.068 6 2.00 0.500 0.135 3 11/24/06 4:00 0.067 7 1. 30 0.231 0.197 1 1/09/08 9:00 0.059 8 1.10 0.091 Computed Peaks 0.178 50.00 0. 980 Evenddl Plat Preliminary 17R-June 2001 Appendix.D. Hydrologic Model Documentation The following is a description of KCRTS input and output files used in designing the R/D facilities and conducting the downstream drainage analysis for the Evendell Plat. EXECUTABLE FILES -basins. exc: This executable file creates time series for all contributing areas to the downstream system. tar.exc: This executable creates target duration files for R/D design. TIME SERIES FILES R/D Design exeast.tsf: The site's easterly basin under existing conditions. Includes area of proposed road improvements along SE 136th Street. exwest.tsf: The site's westerly basin under existing conditions. Includes area of proposed road improvements along SE 136th Street. byeast.tsf: The portion of proposed road improvements along SE 136th Street in the easterly basin that bypasses the stormwater facility. bywest.tsf: The portion of proposed road improvements along SE 136th Street in the westerly basin that bypasses the stormwater facility. deveast.tsf: The site's e~sterly basin under proposed developed conditions. Includes area of proposed road improvements along SE 136th Street. devwest.tsf: The site's westerly basin under proposed developed conditions. Includes area of proposed road improvements along SE 136th Street. poceast.tsf: Time series for developed conditions. at the site's easterly downstream point-of-compliance. pocwest.tsf: Time series for developed conditions at the site'.s westerly downstream point-of-compliance. Evenddl Plllt Preliminary 11R-June 2001 tare.tsf: Target duration curve for the proposed R/D system for the site's easterly basin. Based on the following times series: exeast. tsf. tarw.tsf: Target duration curve for the proposed R/D system for the site's westerly basin. Based on the following times series: exwest.tsf. RESERVOIRS rdeas.rdf: The Evendell Plat R/D facility managing stormwater from the easterly basin of the developed site, including an offsite road improvements. rdwes.rdf: The Evendell Plat R/D facility managing stormwater from the westerly basin of the developed site, including an offsite road improvements. GENERAL NOTES 1. Seatac regional rainfall runoff files with a scale factor of 1.0 were used in the hydrologic simulations. 2. R/D facilities were designed with the 8-year data set. 1-hour peak flow rates were used for detention calculations. 3. 15-minute peak flow rates were used for conveyance calculations. 4. Gravel areas were modeled in KCRTS by assuming that 50 percent of the area is impervious and the remaining 50 percent are the same cover type as that surrounding the gravel area. EV<NldJ Plat Preliminary T1R-June 200/ • • GARRY §TRllJTHERS ASSOCilA TES, KNC. 3150 Richards Road, Suite 100 Bellevue, WA 98005-4446 (425) 519-0300 (phone) (425) 519-0309 (fax) !'".".:'~.,--~ ... ~ '"""'""""'-'="'" ,-~~--> ~· --~----, --' ~ i'.' '1!:!ll«JG!!!Q!U!l , Date: To: January 29, 2002 Mike Romano Centurion Development Services From: GarY A. Norris. P.E. Subject: Response to DOES Screening Memo dated September 26. 200 I Project Name: Evendell Project No: 01-002.07 P _l T Per King County Department of Development and Environmental Services· (ODES) Screening Memorandum dated September 26, 2001, additional issues need to be addressed for the proposed plat of Evendell. This technical memorandum includes responses to the following traffic-related clements requested by ODES: DOES Comment: Provide AM Peak hour volumes and LOS analysis To determine if the AM peak or the PM peak is the "worst case" condition, the Consultant collected AM peak period turning movement counts at the four analysis intersections. As shown in Table I, the results of the AM peak hour counts indicate the AM peak hour volumes are lower than the PM peak hour volumes at three of the four analysis intersections. Therefore, the PM peak hour is considered the ·'worst case" condition. Table I Volume Summary Total Entering Volume Intersection AM PM SE 128th St/148th Ave SE 1.817 1.979 SE 128th St/156th Ave SE 1.894 2.317 SE 136th St/156th Ave SE 1.062 889 SE 128th St/160th Ave SE 1.379 1.651 IQECEJV!er) Table 2 summarizes the Allll l'>eak hour level of service for the 2004 with project condition. The AM peak hour traffic volumes are oc1f;z7oolhe Technical ApRlE co PY l\ll~ll v\.luN, i, ,, LAND USE SE.RVICE::i LO 3 R C:..0 38 c:\windows\temp\techmemoevendell.doc 1129/02 (mjr) ---- ,• Memorandum January 29. 2002 Page 2 Table 2 AM·Peak Hour Level of Service Intersection SE 128th St/148th Ave SE SE !28th St/!56th Ave SE SE 136th St/156th Ave SE WBLT' (xx) -seconds of delay per vehicle I -level of service with bypass traffic volumes 2004 With Project' B (11.7) B (16.0) E (37 3) 2 -movement with the highest dclav. the remaining movements will operate at an acceptable level of service. As shown in Table 2. all analysis intersections would operate at an acceptable level of service in 2004 with the project for the AM peak hour. ODES Comment: The opening of SE 136th Sr. will allow other neighborhood trips to use the SE 136th St. route to access onto 156th Ave. SE. Please reevaluate traffic volume in the area to determine thefimire volumes on SE I 36th St. bet.ween 156th Ave. SE and 160th Ave. SE. An estimate of future PM peak hour volumes on SE 136th Street was made by comparing existing and future travel times between the alternative routes created with the opening of SE 136th Street between 156th Avenue SE and 160th Avenue SE. Table 3 summarizes the results of the travel time analysis. Table 3 Travel Time Analysis Travel Origin Destination Via Time I seconds) SE 136th St/160th West of SE !28th St/156th Ave SE SE 128th St & 160th Ave SE 131 Ave SE 136th St/160th West of SE 128th St/156th Ave SE SE 136th St & 156th Ave SE 129 Ave SE 136th St/160th West of SE 128th St/156th Ave SE SE 136th St & 158th Ave SE 140 Ave West of SE 128th St/ SE 136"' St/160th Ave SE SE 128th St & 160th Ave SE 113 156th Ave SE West of SE I 28th St/ SE 136'h St/160th Ave SE 156th Ave SE &SE 136th St 128 156th Ave SE West of SE 128th St/ SE 136'h St/160th Ave SE SE 128th St. 158th Ave SE. 122 156th Ave SE & SE 136th St 156th Ave SE/ 158th Ave SE/SE 128th St SE 136th St. 158th Ave SE 101 SE 136th St 156th Ave SE/ 158th Ave SE/SE 128th St 156th Ave SE. SE !28th St 80 SE 136th St 158th Ave SE/SE 156th Ave SE/SE 136th St SE I 28th St. 156th Ave SE 108 128th St 158th Ave SE/SE 156th Ave SE/SE 136th St 158th Ave SE. SE 136th St. 101 c:lwindows~emp~echmemoevendell.doc 11'29102 (mjr) I Memorandum January 29. 2002 Page 3 I 28th St \ Based on the travel time studies~ eastbound traffic on SE 128th Street destined southbound on 160th Avenue SE would continue to use SE 128th Street rather than SE 136th Street. However, northbound traffic on 160th Avenue SE destined westbound on SE 128th Street would use SE 136th Street. This is a result of the reduction in travel time created by the signal at the SE 128th Street/156th Avenue SE intersection. Furthermore, the existence ofa traffic signal at the SE 128th Street/ 156th Avenue SE intersection provides the motorist with a degree of certainty that access to SE 128th Street will be provided within a specified time period. Therefore. it was estimated 34 PM peak hour trips would be diverted from 160th Avenue SE to 156th Avenue SE with the opening of SE 136th Street. PM peak hour traffic generated from the residential neighborhood along 158th Avenue SE destined to the south (4 vph) on 156th Avenue SE would use SE 136th Street: one (I) trip destined west on 128th Avenue SE and two (2) trips originating from the east on SE 128th Street would use SE 136th Street: three (3) trips originating from the north on 156th Avenue SE would use SE 136th Street: and all traffic originating from the north and destined to the south (2 vph) on 160th Avenue SE would use SE 136th Street. The trip distribution/traffic assignment for the PM peak hour future with project condition was revised based on the estimated preferred routes with SE 136th Street opened from 156th Avenue SE to 160th Avenue SE. Table 4 summarizes of the level of service with the revised traffic volumes at the impacted intersections. The AM peak hour level of service is provided for comparison. Table 4 Peak Hour Level of Service PM Peak Hour PM Peak Hour Intersection 2004 With Pro_ject 1 2004 With Proiect' SE 128th St/156th Ave SE B (19.2) C(20.l) S_E 136th St/156th Ave SE EBLT' C(l91) C(l9.7) WBLT' (xx) -seconds of delay per vehicle 1 -level of service as detennined in TIA (without bypass traffic volumes) 2 -PM peak hour level of service with bypass traffic volumes 3 -AM peak hour level of service with bypass traffic volumes AM Peak Hour 2004 With Project' B(15.7) E (37.3) 4 -movements with the highest delay. the remaining movements will operate at an acceptable level of service. As shown in Table 4, the impacted intersections would operate at an acceptable level of service with the opening of SE 136th Street and the addition of project-generated traffic. Additional Analvses: Lefi and right turn lane warrants Left and right tum lane warrants were conducted at the SE 136th Street/160th Avenue SE, site access/160th Avenue SE, and the SE 136th Street/I56th Avenue SE intersections for the 2004 with project condition. Results of the analysis indicate that neither a left-tum nor a right-tum lane is warranted on 156th Avenue SE at SE 136th Street. As determined by the level of service analysis, the westbound left tum movement at this intersection would operate at an acceptable level, therefore, a westbound left tum lane is not warranted. For the SE 136th Street/160th Avenue SE intersection, c:\windows\temp\techmemoevendell.doc: 1/'29/02 {mjr) ,• / Memorandum January 29. 2002 Page 4 \ neither a left-tum nor a right tum lane is warranted. Results of the warrant analysis indicate that neither a left-tum nor a right-tum lane is warranted at the site access/160th Avenue SE intersection. Additional Analvses: Roadway Classification A review of the King County Road Standards indicate that SE 136th Street under the R-4 Alternative would be considered a subcollector since the roadway would serve less than l 00 single- family dwelling units and since it would connect to a neighborhood collector (160th Avenue SE). Under the R-6 Alternative. SE 136th Street from 156th Avenue SE to 158th-Avenue SE would be considered a subcollector since the roadway would serve less than l 00 single-family dwelling units. A total of74 PM peak hour trips were estimated to use SE 136th Street between 156th Avenue SE and 158th Avenue SE in 2004 with Evendell including pass-through trips. SE 136th Street from 158th Avenue SE to 160th Avenue SE would again be considered a subcollector since the roadway would service less than I 00 single-family dwelling units. A total of 58 PM peak hour trips were estimated to USC SE 136th Street between 158th Avenue SE and 160th Avenue SE in 2004 with Evendell including pass-through trips. Conclusions • AM peak hour volumes were found to be generally lower than the PM peak hour volumes. • The AM peak hour level of service analysis determined that the analysis intersections would operate at acceptable level of service for the 2004 with project condition. As determined in the Traffic Impact Analysis, all analysis intersections would operate at an acceptable level of service for the PM peak hour in 2004 with the project. • A total of 7 4 PM peak hour and a total of 62 AM peak hour trips are estimated to use SE 136th Street from 156th Avenue SE to 158th Avenue SE. From 158th Avenue SE to 160th Avenue SE, a total of 5 8 PM peak hour and 50 AM Peak hour trips are estimated to use SE 136th Street if opened. • Since both sections of SE 136th Street would serve less than I 00 single-family dwelling units, SE 136th Street from 156th Avenue SE to 160th Avenue SE is considered a subcollector per the King County Road Standards. • The two impacted intersections would operate at ·an acceptable level of service for both the 2004 AM and PM peak hours with the project and diverted traffic vblumes. c:\windo\AIS\temp\l:echmemoevendell.doc 1/'29/02 (mjr) OCT O 1 2003 Kl1'4ll L;UU1'4 IY LAND USE SERVICES TRAFFIC IMPACT ANALYSIS FOR EVENDELL June 28, 2001 US Land Development, Associates Centurion Development Services 22617 8th Drive SE Bothell, WA 98021 F~LE COPY &1ECEIV~r.) ll,gp 3 R Ocf ffl~1 2003 Kl NG LUU 1'4 fY LAND USE SERVICES Traffic Impact Analysis Evendell -""---''----_:_-------------------------= TABLE OF CONTENTS INTRODUCTION .......................................................................................................................................... I PROJECT DESCRJPTION ............................................................................................................................ I EXISTING CONDITIONS ............................................................................................................................ I Roadways ................................................................................................................ : .................................. 5 SE 128° Street ........................................................................................................................................ 5 148° Avenue SE ..................................................................................................................................... 5 SE 136° Street ........................................................................................................................................ 6 156" A venue SE ..................................................................................................................................... 6 158° Avenue SE ..................................................................................................................................... 6 160° Avenue SE ..................................................................................................................................... 6 Transit/Non-Motorized Facilities ............................................................................................................... 6 Transit ..................................................................................................................................................... 6 Non-Motorized Facilities ........................................................................................................................ 7 Traffic Volumes .......................................................................................................................................... 7 Level of Service .......................................................................................................................................... 7 Definition ................................................................................................................................................ 7 Accidents .................................................................................................................................................... 9 Planned and Programmed Improvements ................................................................................................... 9 FUTURE CONDITIONS WITHOUT PROJECT ........................................................................................ 10 Background Traffic Volumes .......................................... , ........................................................................ 10 Pipeline Projects ................................................................................................................................... I 0 Historical Growth ................................................................................................................................. 11 Level of Service ........................................................................................................................................ 11 FUTURE CONDITIONS WITH PROJECT ................................................................................................ 13 • Traffic Volumes ........................................................................................................................................ 13 Project Trip Generation ........................................................................................................................ 13 Trip Distribution/Traffic Assignment ....................................................................................................... 14 Level of Service ........................................................................................................................................ 14 Tum Lane Analysis .................................................................................................................................. 19 CONCLUSIONS .......................................................................................................................................... 20 TRAFFIC IMPACT MITIGATION ............................................................................................................. 21 Garry Struthers Associates, Inc. Traffic Impact Analysis Evende/1 INTRODUCTION The following report was prepared to address the traffic impact analysis guidelines of King County for the Preliminary Plat of Evendell located on the south side of SE 136th Street between 156th Avenue SE and 160th Avenue SE in the Renton area of King County. A vicinity map is presented in Figure I. This report summarizes the process, findings, conclusions and recommendations of the traffic analysis. PROJECT DESCRIPTION Evendell is a 13.01-acre property consisting of two adjoining parcels. One parcel is 11.4 acres and the smaller parcel is 1.61 acres. The zoning is R-4, which allows 4 units per acre. Two alternative development concepts are being considered for the property. Under one alternative, the plat will only include the larger 11.4-acre parcel, developed to 44 lots under the current R-4 zoning. Under the second alternative, a rezone application would be submitted requesting re- designation to R-6 density (six units per acre). Under the R-6 alternative, both parcels would be included in the plat for a total of 75 lots. Both alternatives are being submitted to the County for concurrent review and are included in this Traffic Impact Analysis. Under the R-4 alternative, access to the plat will be via 160th Avenue SE, negating the need to improve SE 136th Street from 156th Avenue SE to 160th Avenue SE. Under the R-6 alternative, SE 136th Street will be improved to urban neighborhood collector standards from 156th Avenue SE to 158th Avenue SE although a sidewalk is not proposed for the north side. From 158th Avenue SE to 160th Avenue SE, SE 136th Street will be developed to half-street urban neighborhood collector standards. The plat access road will align with 158th Avenue SE. There is an existing single-family dwelling unit on the 11.4-acre parcel that will remain under both alternatives. The plat is expected to be fully occupied by 2004, which for the purposes of this analysis is assumed to be the horizon year. Preliminary site plans for both the R-4 and R-6 alternatives are presented in Figures 2A and 2B. EXISTING CONDITIONS The Existing Conditions analysis provides a statement of the traffic-related conditions within the study area at the time of the writing of this report. The statement includes a discussion of the existing roadway, transit, pedestrian and bicycle facilities serving the site; identification of existing peak hour traffic volumes and accident history at the analysis intersections; and identification of proposed transportation improvements in this area. Garrj, Struthers Associates, Inc. Page I GAAAv Smltn•Sl•S AssoclAm,, JHC. .,,eo,..,_-. .._ 100 ---~-f1'211)8Uil•-0300 F.:f"21S)G1..,_ e.ffllll: a --·- ~ ~ ol.\-1SSAo<J4 ---~ly"'q S,9 i S 136TH ST I.I (II ... SE 128TH ST ~ I.I "' (II -,S SITE~ ~ IO ... 900 TH ST VICINITY MAP EVENDELL FIGURE 1 -=-\\l -' ... -·;; l R-4 ·:-;. i I I .. _I I GARRY STRUTHERS Assoa.t.TI:B, INC. :11,0---.-,00 --...WA-....... -.,(4M).,._ Fu:~) •1"°308 ~;. ~ -- SITE R-4 SCALE: I" ,. 100· ·-.I ' 1 100 0 PLAN ZONING FIGURE 2A ,oo 200 R-4 EVENDElL GARRY S'TRUTHE. RS AssoctATES, INC. :!1150~Aaad.8ultlo ,oo -.,WA~ _,(UIS)ll1IMDOII Fa: (425) lltl-OJOO ~: ---- Garde s _,,_,,, ,._ _ _,. ....... r,c n.,..,;n,.,. (-</ SITE PLAN R-6 ZONING FIGURE 28 SC.OU: 1• • 100· .e. -'-/ , EVENDELl Traffic Impact Analysis Evende/1 King County Ordinance # 11617 requires a traffic analysis of the project impact at all intersections, which receive 20 percent and 30 peak hour project generated trips. Based on the transportation concurrency model distribution for this site, the following intersections are impacted by the project: R-4 Alternative }> SE 128'h Street/l 60'h A venue SE }> Site Access/ 160th A venue SE R-6 Alternative }> SE 128'h Street/148th Avenue SE }> SE 128'h Street/I 56'h Avenue SE }> SE 136"' Street/l 56'h Avenue SE }> SE 136th Street/l 58'h Avenue SE Although the intersections of 144'h Avenue SE/SE 128"' Street and 138"' Avenue SE/SE 128"' Street meet this criteria, these intersections are under the jurisdiction of the City of Renton and therefore were not analyzed as part of this study. Roadways The roadways directly impacted by the proposed development include SE 128"' Street, 148"' Avenue SE, 156"' Avenue SE, SE 136"' Street, 158"' Avenue SE, and 160"' Avenue SE. These roadways are discussed in the following section. SE 128'• Street SE I 28'h Street is a 4-lane principal arterial, which runs from 148"' Avenue SE to I 60'h Avenue SE in the vicinity of the site. There is a westbound left-tum lane at 156"' Avenue SE and an eastbound left turn lane at l 48'h A venue SE. The roadway width is approximately 60 feet. There is curb, gutter and sidewalk at the intersection with I 56'h Avenue SE and asphalt-paved shoulders at the intersection with 148'h Avenue SE. Traffic control includes a stop sign at 148'h Avenue SE and a signal at l 56'h Avenue SE. The posted speed limit is 35 mph west of 156"' Avenue SE and 45 mph east of 156'h Avenue SE. 148'• Avenue SE 148"' A venue SE is a 2-lane collector arterial that runs north south from SE 128"' Street to May Valley Road in the vicinity of the site. There are paved shoulders at the intersection with SE 128"' Street. Traffic control includes a stop sign SE 128"' Street. The posted speed limit is 35 mph. Garry Struthers Associates, Inc. Pages Traffic Impact Analysis Evendell SE 136'• Street SE 136'h Street is a 20-foot wide gravel road from 152nd Avenue SE to 156'h Avenue SE. King County maintains the roadway near the intersection with 1561h Avenue SE. The remainder of the roadway to the west is a private street. SE 1361h Street is a paved road from 1601h Avenue SE to 162nd Avenue SE. Stop signs on SE l 36'h Street provide the traffic control at the intersection with 156th Avenue SE and 160'" Avenue SE. 156'' Avenue SE 156'h Avenue SE is a minor arterial that runs north/south from SE !28th Street to SE 142nd Street in the vicinity of the site and has one Jane in each direction. The pavement width is approximately 24 feet with paved shoulders on the both sides of the roadway. Traffic control includes a stop sign at SE 136th Street and a signal at SE 128th Street. The posted speed is 35 mph. 158'• Avenue SE 15 gth A venue SE is a two-lane neighborhood collector that runs north and south from SE I 28th Street and dead ends at approximately SE l 36'h Street. The roadway width is approximately 24 feet with little to no dirt shoulders on both sides of the roadway. Traffic control includes a stop sign at SE 128'h Street. The posted speed limit is 25 mph. ]6(1• Avenue SE 160'h A venue SE is a two-lane neighborhood collector that runs north and south from SE I 25th Street to SE l 44'h Street in the vicinity of the site. The roadway width is approximately 24 feet with little to no dirt shoulders on the west side and a paved shoulder on the east side of the roadway. Traffic control includes a stop sign at SE !28th Street. The posted speed limit is 25 mph. Transit/Non-Motorized Facilities Transit King County Metro provides transit service in the vicinity of the site. Routes 111 and 114 provide service along SE !28th Street, SE 144th Street and 144th Avenue SE. There are two bus stops located near the proposed plat. One is located on the southeast comer of SE I 28th Street/I 56th Avenue SE and the second is located on the southeast comer of SE I 28th Street/I 60th Avenue SE. During the week, service for Route 111 runs from 5:15 AM to 7:35 AM from 4:15 PM to 6:45 PM with approximate 30-minute headways. Service for Route 114 runs from 6:45 AM to 9:00 AM and from 5:00 PM to 6:30 PM with approximate 30-minute headways. In addition, there is Renton Dial-a-Ride Transit (DART) service along SE 128th Street, Lake Kathleen Drive, SE 144th Street, and 156th Avenue SE Monday through Friday. Garry Struthers Associates, Inc. Page6 Traffic Impact Analysis Evende/1 Non-Motorized Facilities There are currently no non-motorized facilities in the vicinity of the plat. Traffic Volumes Existing PM peak hour traffic volumes at the analysis intersections were determined from turning movement counts collected between June 11-22, 2001. The existing PM peak hour volumes are presented in Figure 3. Level of Service Definition Level of service (LOS) is used to qualify the degree of traffic congestion and driver comfort on streets or at intersections. The Highway Capacity Manual (HCM) describes the methodologies for calculating LOS on street segments and at signalized and unsignalized intersections. According to the 2000 HCM (TRB Special Report #209), there are six levels of service by which the operational performance of the roadway system may be described. These levels of service range from LOS A, which indicates a relatively free-flowing condition, to LOS F that indicates operational breakdown. The level of service for a two-way stop controlled (TWSC) intersection is determined by the computed or measured control delay and is defined for each minor movement. Level of service is not defined for the intersection as a whole. Average control delay less than or equal to 10 seconds per vehicle is defined as LOS A. For LOS F, the average control delay is greater than 50 seconds per vehicle. The LOS for signalized intersections is defined in terms of average control delay per vehicle. The criterion for LOS A is an average control delay of less than or equal to IO seconds per vehicle. The criterion for LOS F is an average control delay of greater than 80 seconds. King County has adopted a level of service E as the county road capacity standard. According to Ordinance # 11617 any development that impacts an intersection with 20 percent of the peak hour project generated trips and 30 project generated peak hour trips must provide a level of service E with full development of the project. If the level of service is below LOS E for the without project condition, the developer is responsible to maintain the existing level of service. For the R-4 alternative, the SE 128th Street/1601h Avenue SE and the site access/160th Avenue SE intersections meet the criteria for an impacted intersection. For the R-6 alternative, the SE 128th Street/148th Avenue SE, SE 128th/156th Avenue SE, and SE 136th Street/156 .. Avenue SE intersections meet the criteria. Level of service for the signalized intersection was calculated using Synchro™ and the Mc Trans version of the 2000 Highway Capacity Manual, HCS-2000 was used for the unsignalized intersections. The results of the existing condition level of service analysis for the R-4 and R-6 alternatives are shown in Table I. Garry Struthers Associates, Inc. Page? " <O L" ~ ~ w j L -604 V, ~ V, 65 _) i!: <O 1164-'! SE 128TH ST 670 - 415 1 Jj 0 _) 1 t 1 ~ ~ I ON -549 ,336 1 r N ~ N N N - f "'i'Srnisrr-- 1 I w V, SE 137TH PL I I L __ ._!E 7J87H PL r ---.::___ii I NOT TO SCALE GARRY SlRvn<ERS AssoclATES, INC. !11II0--,-100 -·---_, {QS) 119-«IOO Fa:fQS)llt.,_ I!--~.~- t/!l w I ~ I : I < ~I i I ;,; I ~ I ;:; I -, -, I I I I I I I 2001 EXISTING TRAFFIC VOLUMES PROJECT SITE w-• L5 JIL -736 ,35 7 _) ,tr 755 - 56 • N ' NON XX -PM PEAK EVENDELL FIGURE 3 Traffic Impact Analysis Table 1 2001 Existing Level of Service Intersection R-4 Alternative SE 128" Street/160" Ave SE NBLT' R-6 Alternative SE 128" Street/148" Ave SE SBLT' SE 136'' Street/ 156" Ave SE EBLT' SE 128" Street/156" Ave SE · Overall (xx) • seconds of delay per vehicle. Traffic Control Two-Way Stop One-Way Stop One-Way Stop Signal 2001 Existing D (28.7) F (50.9) B (13.4) B (16.3) SBL T -southbound left, NBL T -northbound left, EBL T -eastbound left. Evende/1 LOS Standard E E E E I -for the unsignalized intersections, the movement with the highest delay is shown. All other movements operate at LOS A or B. As shown in Table 1, all analysis intersections operate at an acceptable level of service except for the SE !28th Street/l 48th Avenue SE intersection. This intersection operates at a LOS F with a vehicle delay of 50.9 seconds. Accidents The latest three-year accident history data at the analysis intersections were obtained from King County. The latest three-year accident history included the period from January 1, 1997 to December 31, 1999. A summary of the three-year accident history is presented in Table 2. Table 2 Three-Year Accident History No. of Accidents Intersection SE 128m St/148m Ave SE SE 128" St/156" Ave SE SE 136" St/156" Ave SE SE 128" St/160" Ave SE I) -Accident rate per million entering vehicles 1997 0 4 0 3 2)-Average accident rate for type of intersection per WSDOT 1998 1999 2 0 4 4 0 0 5 5 Acc. Avg. Rate' Rate• 0.11 0.90 0.49 0.90 0.00 1.30 0.66 0.90 As shown in Table 2, the accident rates for all analysis intersections are below the state average for similar intersections. Planned and Programmed Improvements A review of King County's Planned and Programmed Transportation Improvements indicate the following transportation improvement projects planned in the study area. Garry Struthers Associates, Inc. Page9 Traffic Impact Analysis Evendel/ o 149'h Avenue SE (Maple Valley Highway to Elliot Bridge) CIP #400588. North of Jones Road -Construct three-lane approach with a left-tum lane, two through lanes. South of Jones Road -Construct a three-lane approach road with one 12-foot center turn lane, two through lanes with curb, gutter, and sidewalks. This project is related to CIP #401288. Presently the County is conducting further environmental studies and preparing a Supplemental Environmental Impact Statement. o l 54'h Place SE/SE 142"' Place (SE Jones Road to J 56'h Avenue SE) King County Roads. Realign roadway, widen roadway, pave shoulders, and construct bike lane on shoulder. o J 56'h Avenue SE (SE 142"' Place to SE l 28'h Street) King County Roads. Pave shoulders. o Jones Road (149'h Avenue SE to SR 169) Private. Pave shoulders. FUTURE CONDITIONS WITHOUT PROJECT The Future Conditions without Project analysis provides a discussion of the traffic-related conditions in the horizon year without the proposed project. This section includes a discussion of background traffic volumes and level of service at the analysis intersections in the horizon year. Evendell is expected to be fully occupied by 2004, market permitting. Therefore, 2004 for the purposes of this analysis is considered to be the horizon year. Background Traffic Volumes Background traffic volumes for the 2004 without project condition include the 2001 existing PM peak hour traffic volumes, PM peak hour traffic generated by known pipeline projects in the vicinity of the site, and area-wide traffic growth. Pipeline Projects Pipeline projects are defined as proposed development, which is expected to be fully developed and impact the transportation system within the horizon year of Evendell. King County and the City of Renton identified the following proposed projects in the general vicinity of Evendell. Trip generation for the proposed projects is presented in Table 3. Garry Strothers Associates, Inc. Page 10 Traffic Impact Analysis Evende/1 Table 3 Pipeline Projects PM Peak Location Land Use Total In Out King County 13615 154"' Ave SE 59 sfdu's 60 38 22 13305 160"' Ave SE 22 sfdu's 22 14 8 139XX 162nd Ave SE 5 sfdu's 5 3 2 SE 138"' Pl/196"' Ave SE I sfdu I I 0 14243 183rdAveSE 2 sfdu's 2 I I SE 128"' St/164"' Ave SE 4 sfdu's 4 3 City of Renton 500 I SE 128"' Street 8 sfdu's 8 5 3 N. & S. side of SE 128"' St 45 sfdu's 45 29 16 14606 SE 136"' St 21 sfdu's 21 13 8 5715 SE 128"' St 7 sfdu's 7 4 3 5710 SE 128"' St 7 sfdu's 7 4 3 5800 SE 128"' St 8 sfdu's 8 5 3 S. of SE 128"' St, btwn 148"' Ave & 152nd Ave 218 sfdu's 218 140 78 618 SE 128'h St 124 sfdu's 125 80 45 Total 533 341 192 As shown in Table 3, the pipeline projects are expected to generate approximately 533 PM peak hour trips. Trip distribution/traffic assignments for the pipeline projects were determined based upon King County's Transportation Concurrency model run. Historical Growth Existing 2001 PM peak hour volumes were factored by 1.03 to represent the historical growth portion of the background traffic. The 1.03 factor is based on a 1.0 percent per year growth rate in the vicinity of the site provided by the County. A summary of the background traffic volumes is presented in Figure 4. Level of Service The 2004 background without project PM peak hour level of service at the analysis intersections is presented in Table 4. The existing level of service is shown for comparison purposes. Garry Struthers Associates, Inc. Page 11 L,6 " " <O -<O JIL -641 w "' 19 ~ "' iE ~ ! SE 128TH ST 720 - 461 l JI ,,_J,t 24-., co~ I NN -601 ,,so 1 r " ;:; .. N C':i FIRE STATION f "'i3STHsrr-- l I SE 137TH Pl I I L __ ..:._E I JBTH Pl r --....::___j1 I NOT TO SCALE ARRY SJR.LmiERS As8oc1ATE8, INC. s,ao ,_,,_.-. -,oo -=:::):=-- l'u:(~)&1ll,.030II ~ -.. .-..-.-.... ~ wl ~ I ::; I .. ., I §? I iE I ~ I .:1 I -, -1 I I I I I I I w "' 2004 W/OUT PROJECT TRAFFIC VOLUMES FIGURE 4 w "' '°-"' Ls -783 JIL ,,s _) 1!( 7 794 - 73 .. .. l noN XX -PM PEAK EVENDELL Traffic Impact Analysis Evendell Table 4 2004 Without Project Level of Service 2001 2004 Intersection Trame Control Existin~ Without Project LOS Standard R-4 Alternative SE 128" Street/160" Ave SE E N8LT1 Two-Way Stop D (28.7) E (39.7) R-6 Alternative SE 128" Street/148" Ave SE S8LT1 One-Way Stop F (50.9) E Overall Signal' A (8.8) 1 SE 136" Street/156" Ave SE E8LT1 One-Way Stop 8 (13.4) C(l7.2) E SE 128" Street/156" Ave SE Overall Signal 8(16.3) 8(19.1) E (xx) -seconds of delay per vehicle. S8L T -southbound left, N8L T -northbound left, E8L T -eastbound left. I -for the unsignalized intersections, the movement with the highest delay is shown. All other movements operate at LOS A or 8. 2 -a traffic signal, a south leg and eastbound/westbound left turn lanes will be constructed at this intersection as part the Maplewood development. As shown in Table 4, all analysis intersections will operate at an acceptable level of service in 2004 without the project. FUTURE CONDITIONS WITH PROJECT The Future Conditions with Project analysis provides a statement of what traffic related conditions will be like in the horizon year with the project. The analysis simply adds anticipated project impacts to the horizon year background conditions. The analysis defines anticipated project trip generation and evaluates impact through a level of service analysis at each of the analysis intersections. Traffic Volumes Traffic volumes for 2004 with project condition include 2004 without project volumes discussed above plus expected traffic to be generated by Evendell. · Project Trip Generation Trip generation for Evendell was calculated using the trip generation rates for Single-Family Dwelling Units, Land Use Code 210 presented in the Sixth Edition of the Institute of Transportation Engineers Trip Generation Report, 1997. A summary of the anticipated trip generation for both the R-4 and R-6 zoning alternatives for Evendell is presented in Table 5. Garry Struthers Associates, Inc. Page 13 Traffic Impact Analysis . Evendell Table 5 Trip Generation AM Peak PM Peak Land Use AWDT Total In Out Total In Out R-4 Alternative Proposed -44 sfdu's 421 33 8 25 44 28 16 Existing -I sfdu 10 I 0 I I I 0 Net Impact 411 32 \JI<, 8 24 43 27 16 R-6 Alternative '\ u Proposed -75 sfdu's 7 I 8 6i_lJP s)r' 14 42 76 49 27 Existing -I sfdu J.Q /1 I fl I 0 I I I 0 Net Impact ( 708\ lo" 55 14 41 75 48 27 '-...../ As shown in Table 5, the R-4 alternative for Evendell is estimated to generate 421 daily, 33 AM peak hour and 44 PM peak hour trips in the 2004 horizon year. The net traffic impact of the project was determined by deducting the existing site trip generation from trip generation expected with the proposed development. The net traffic impact is 411 daily vehicle trips, 32 AM peak and 43 PM peak hour trips. The R-6 alternative is estimated to generate 718 daily, 56 AM peak hour and 76 PM peak hour trips in the 2004 horizon year. The net traffic impact determined by deducting the existing single-family dwelling unit is 708 daily vehicle trips, 55 AM peak and 75 PM peak hour trips. Trip Distributionffraffic Assignment Trip distribution percentages for Evendell were based on the traffic assignment provided by King County Transportation Planning as part of the Transportation Concurrency Analysis. Trip distribution percentages for the pipeline projects were derived from the percentages determined for the Evendell analysis. The results of the trip distribution/traffic assignment process for project-generated trips are presented in Figures 5A and 5B for the R-4 and R-6 alternatives, respectively. A summary of the 2004 with project PM peak hour volumes are presented in Figures 6A and 6B for the R-4 and R-6 alternatives, respectively. Level of Service The 2004 with project PM peak hour level of service at the signalized intersection are shown in Table 6. The existing condition and 2004 without project PM peak hour level of service are provided for comparison. Garry Struthers Associates, Inc. Page14 l -6 15 - 6 SE 128TH ST - 15 w "' t:; -6 16 - 6 -16 f"BTHsn-- 1 I 16 - w "' ~ :c ~ "' ~ SE 13TIH PL I I L __ _:_E 1 Jan; Pl r -----.::___ 11 I NOT TO SCALE GARRY STR\ITHeRS "88ocu>.TES. INC. 3180--.-,00 ai::c:>~ f'11£(.al)ll11Ma118 ---------- .::, I "'I m ~ I w l < "I fil I iE I ~ I ;:>; I -, -1 I I I I I I I w "' PROJECT-GENERATED TRAFFIC VOLUMES R-4 ALTERNATIVE FIGURE 5A -6 6 - 16 ,1 l 1 16 f U> P") 7 --3 ~ ,, j I• N j 9 _) l 7 l v 7 I I R-4 ALTERNATIVE 4 44 LOTS w "' PM PEAK HOUR TRIPS TOTAL: 43 IN: 27 OUT: 16 XX -PM PEAK EVENDELL l 28 -10 10 SE 128TH ST - 28 w V> ~ V> r ~ "' ~ -2 21 l 8 ' "' 10 La 2s "' l ,a r w l '11 21 l N r w j • _) l F136THSTT--+tt---,.,~...,.~:.-r-,,f-1-+--,3 l N I I SE 137TH P I I L __ ..:_r 1 JBTH PL r -~=--1 I ej ---- NOT TO SCALE GARRY STRUTHERS AssoclATES, INC. :,1110~~ ....... ,oo -.WA~ -., (-) OUM)300 Fu: ("25) IH9-0XIO e-= ...., -·- :, I (/)I ~ Is' I w I ., ~ I 'fl .El ~ I ::\ I I -I I I I I I I I t• ;;. 14 l PROJECT-GENERATED TRAFFIC VOLUMES R-6 ALTERNATIVE I 13 ltr w -"'~ FIGURE 58 3 l t 2 R-6 ALTERNATIVE 75 LOTS PM PEAK HOUR TRIPS TOTAL: 75 w IN: 48 V> ! OUT: 27 § ~ XX -PM PEAK EVENDELL "' <O L35 <O -<O JIL -647 w 19 "' ~ "' ,: ~ ~ :! SE 128TH ST __:E T J87H PL NOT TO SCALE GAMY STRUTHERS Assocu.TES. INC. $'1SO--.-,oo --.....---.:!"211)1119-0300 ~-(425)111-·--...... .-._.ire.com 736 - 461 I JI 11 _Jlt -607 1350 l r "' v ~· N [S FIRE STATION fLlrmisrr-- I I I I SE 137TH PL I ~------ I I .J I VJ I ~ w is' I 's! I "' < < I ~ ~ I iE I ~, VI iE <O -I !!' I !!' I I I I I I I 2004 WITH PROJECT TRAFFIC VOLUMES R-4 ALTERNATIVE FIGURE 6A <0-v Ls -783 JIL ,4s 7 _) 111 794 - 89 0 ~ ' vON .., ;: N- JI 9 _) 11 w 7 "' "' ' v"' ~ iE 0 ~ XX -PM PEAK EVENDELL "' w L,6 -603 ONO Lo Ls w-v W-W w ,,so Jl l -o -783 -651 13 Jll V> ,•9 19 Jll ~ V> t r =:'. 1t r I 741 -0 7 _) 1!1 ~ 0 794 -~ :': SE 128TH ST 469 l n "' N b1 =:'. 1 I r 24--., Ul~ ' NNIO ;; cs FIRE STATION r1J6THSTr-- l I 14 ' I I --~-1_~-~-P~L-----' ~--( I :, I SE 137TH Pl NOT TO SCALE GAARv STRuTHERS .....,.,..TES, INC. 31110--,a.-100 --.wA .......... -=c-,,,.._ F-= 142t!l 111Ml308 e.-; 0 I_., ~-~- Vl I ~ ~ I w I "' ~ I ~ I iE I ~, ;:q I -, I I I I I I 2004 WITH PROJECT TRAFFIC VOLUMES R-6 ALTERNATIVE FIGURE 68 w 73 v 0 -NO> ' non XX -PM PEAK EVENDELL Traffic Impact Analysis Evendell Table 6 2004 With Project Level of Service 2001 2004 2004 LOS Intersection Traffic Control Existinl( Without Project With Project Standard R-4 Alternative Site Access/160" Ave SE EBLT' One-Way Stop SE 128" Street/160" Ave SE A (9.4) E NBLT' Two-Way Stop D (28.7) E (39.7) E (47.9) E R-6 Alternative SE 136th Street/158" Ave SE WBLT' Two-Way Stop A (9.0) E SE 128h Street/148" Ave SE SBLT' One-Way Stop F (50.9) E Overall Signal' A (8.8)' A (8.9) 1 SE 136" Street/156" Ave SE EBLT' One-Way Stop B (13.4) C (17.2) E Two-Way Stop' C(l9.l) SE 128" Street/156" Ave SE Overall Signal B (16.3) B (19.1) B (19.2) E (xx) -seconds of delay per vehicle. SBL T -southbound left, NBL T -northbound left, EBL T -eastbound left. I -for the unsignalized intersections, the movement with the highest delay is shown. All other movements operate at LOS A or B. 2 -a traffic signal, a south leg and eastbound/westbound left tum lanes will be constructed at this intersection as part the Maplewood development. 3 -with the R-6 alternative, SE 136th Street will be developed west to 156th Avenue SE, creating a two- way stop controlled intersection. As shown in Table 6, the analysis intersections will operate at an acceptable level of service in 2004 with the project. Turn Lane Analysis A turn lane warrant analysis was conducted at the SE 1361h Street/l 561h Avenue SE, SE 136th Street/158th Avenue SE, and the Site Access/1601h Avenue SE intersections. Under the R-6 alternative, the plat access road will align with 158th Avenue SE. The warrant analysis determined that niether a northbound left-tum nor a southbound right-tum lane is warranted at the SE 1361h Street/1581h Avenue intersection. In addition, under the R-6 alternative, SE 1361h Street will be developed west to 1561h Avenue SE, thus creating an east leg at this intersection. The warrant analysis determined niether a southbound left-tum nor a northbound right-tum lane is warranted at the SE 1361h Street/l 561h Avenue intersection. Under the R-4 alternative, access to the site will be via a plat entry road to 1601h Avenue SE, south of SE 1361h Street. The warrant analysis determined that neither a northbound left-tum or a southbound right-tum lane is warranted at this intersection. Garry Struthers Associates, Inc. Page 19 Traffic Impact Analysis Evende/1 Pedestrian Facilities To/From Schools Briarwood Elementary School Briarwood Elementary School is located on SE 134th Street, east of 168th Avenue SE. The pedestrian route to this school from Evendell would likely be via north on 160th Avenue SE, east on SE I 28'h Street, south on 168th Avenue SE, and east on SE 134'h Street, which is approximately 1-1 /4 miles. Pedestrian facilities on 160 Avenue SE north of SE 136th Street include a paved shoulder on the east side of the roadway. On SE 128th Street pedestrian facilities include a paved shoulder on the south side of the road. Paved shoulders are provided on the east side of I 68'h Avenue SE and on the north side of SE 134'h Street. Maywood Middle School Maywood Middle School is located on 168th Avenue SE south of SE 144th Street. The pedestrian route to this school from Evendell would likely be via south on 160th Avenue SE, east on SE I 44'h Street, and south on I 68'h Avenue SE, which is approximately I mile. Pedestrian facilities on 160'" Avenue SE, south of SE 136'h Street, include little to no shoulder on the either side of the roadway. On SE l 44'h Street, pedestrian facilities include a paved shoulder on both sides of the road. A sidewalk is provided on the east side of 168th Avenue SE. Liberty High School Liberty High School is located on 168'h Avenue SE south of SE 136th Street. The pedestrian route to this school from Evendell would likely be via north on 160th Avenue SE, east on SE 128'h Street, and south on 168th Avenue SE, which is approximately 1-1/2 miles. Pedestrian facilities on I 60'h Avenue SE, north of SE 136th Street, include a paved shoulder on the east side of the roadway. On SE !28th Street pedestrian facilities include a paved shoulder on the south side of the road. A paved shoulder is provided on the east side of ! 68'h A venue SE. Since the pedestrian routes are greater than a mile from the proposed plat, students will likely be bussed to the schools. CONCLUSIONS The plat of Evendell will not create any significant adverse conditions on the surrounding transportation network. Under the R-4 zoning alternative, the plat will generate approximately generate 411 daily, 32 AM peak hour and 43 PM peak hour new vehicle trips. The R-6 alternative is estimated to generate 708 daily, 55 AM peak hour and 75 PM peak hour trips. As determined from the analysis, the R-4 alternative will meet the County intersection analysis standard at two intersections: site access/160th Avenue SE and SE 128th Street/160th Avenue SE. The R-6 alternative will meet the standard at three intersections: SE 128th Street/148th Avenue SE, SE 128th Street/156th Avenue SE, and SE 136th Street/156th Avenue SE. All analysis intersections were determined to operate at an acceptable level of service for the 2004 with and without project conditions under both alternatives. The tum lane warrant analysis for the R-4 alternative, determined that neither a northbound left nor a southbound right tum lane is warranted at the Site Access/I 60th Avenue SE intersection. Garry Struthers Associates, Inc. Page20 Traffic Impact Analysis Evende/1 Under the R-6 alternative, it was determined that neither a southbound left nor a northbound right tum lane is warranted at the SE 136'h Street/156'h Avenue SE intersection. TRAFFIC IMPACT MITIGATION Evendell will be required to pay a MPS mitigation fee of $117,820 (43*$2,740) for the R-4 alternative and $205,500 (75*$2740) for the R-6 alternative based on $2,740 per unit for Concurrency Zone 449. No other traffic mitigation is deemed necessary. Garry Struthers Associates, inc. Page21 Traffic Impact Analysis Garry Struthers Associates, Inc. Evende/1 D TECHNICAL APPENDIX for EVENDELL Evendell SE 128th Street/148th Ave SE PM PEAK HOUR C> C> C C 0 ·c ·a " .. • a. :; a. 0 0 N ,: 3 e " "C C ~ e C> " u .. a, u • ·e Q. • £ .; 0. ii: 0 (.) "' C " 0 u • ·e Q. • .5 .; 0. ii: C ~ • a: u • ·e a. s 0 ,: ~ cl 2 C> C ·c 0 N "r a: .; "C C ~ w C> C ·c 0 N 'I' a: .; "C C ~ w 0 N "r a: u • .E Q. ,: ~ .. 0 0 N 0 N 'I' a: u • ·e Q. € 1: .. 0 0 N " 0 u .. u. " ~ 0 J: " .. • a. 0 • 0 ~ ~ " u 2 >-- E ~ • a. EBLT 65 2 0 9 76 0 0 76 76 EBT 1164 35 46 71 1316 15 28 1331 1344 0.97 0.005 EBRT 0 0 0 136 136 0 0 136 136 WBLT 0 0 0 19 19 0 0 19 19 WBT 604 18 18 1 641 6 10 647 651 0.87 0.002 WBRT 31 1 2 2 36 0 0 36 36 NBLT 0 0 0 75 75 0 0 75 75 NBT 0 0 0 1 1 0 0 1 1 0 0 NBRT 0 0 0 12 12 0 0 12 12 SBLT 58 2 3 2 65 1 1 66 66 SBT 0 0 0 1 1 0 0 1 1 0.81 0 SBRT 57 2 0 6 65 0 0 65 65 1979 60 69 335 2443 22 39 2465 2482 6/28/014:49 PM Evendell SE 128th Street/156th Ave SE PM PEAK HOUR "' "' C C " m m .. ::; .. 0 0 N .c i Cl " C , E "' ti m (D • 0 m £ m .5 Ii [ 0 () "' C ,2 • 0 m ·e .. m .E Ii C. ii: C 0 c m a: 0 m ·a- ii. "5 0 .c ~ " 0 0 N "' C c 0 N .., a: Ii " C m > w "' C ·c 0 N ~ Ii " C m > w ·c 0 N .., a: 0 m e .. ~ " 0 0 N ·c 0 N ~ 0 m ·e .. E ;: " 0 0 N l; 0 m u. , 0 :t " m m .. • m • , (D " " u 2 ,_ c ~ m .. EBLT 0 0 0 0 0 0 0 0 0 EBT 670 20 19 11 720 16 21 736 741 0.94 0.004 EBRT 415 12 30 4 461 0 8 461 469 WBLT 336 10 4 0 350 0 0 350 350 WBT 549 16 11 25 601 6 2 607 603 0.96 0 WBRT 0 0 0 0 0 0 0 0 0 NBLT 222 7 9 7 245 0 8 245 253 NBT 0 0 0 0 0 0 0 0 0 0.81 0.009 NBRT 125 4 2 0 131 0 0 131 131 $BLT 0 0 0 0 0 0 0 0 0 SBT 0 . 0 0 0 0 0 0 0 0 0 0 SBRT 0 0 0 0 0 0 0 0 0 2317 69 75 47 2508 22 39 2530 2547 6/28/014:49 PM Evendell SE 136th StreeU156th Ave SE PM PEAK HOUR "' "' C C " m • .. ::; .. 0 0 N .c I (!) " C ~ e "' " u m CD ~ 1l • ·e .. • . 5 ,; C. ii 0 u "' C ;;; 0 1l • £ • .5 ,; .s .. C ~ • rr 1l • ·e .. ; 0 ~ .. 0 0 N "' C ·2 0 N "I rr ·i " C ~ w "' C ·2 0 N ~ ,; " C • > w c 0 N "I rr 1l • ·e .. § ;: .. 0 0 N ·2 0 N 'I' rr 1l • ·e .. E ;: .. 0 0 N 0 1l m u. ~ ~ 0 I: " m • .. 0 • 0 ~ CD " ti 2 .... 1, ~ • .. EBLT 0 0 11 0 11 0 0 11 11 EBT 0 0 0 0 0 0 0 0 0 0.23 0 EBRT 1 0 10 13 24 0 0 24 24 WBLT 0 0 0 0 0 0 8 0 8 WBT 0 0 0 0 0 0 0 0 0 0 0 WBRT 0 0 0 0 0 0 8 0 8 NBLT 0 0 4 24 28 0 0 28 28 NBT 239 7 0 7 253 0 0 253 253 0.86 0.004 NBRT 0 0 0 0 0 0 6 0 6 SBLT 0 0 0 0 0 0 8 0 8 SBT 647 19 0 4 670 0 0 670 670 0.86 0.006 SBRT 2 0 34 0 36 0 0 36 36 889 26 59 48 1022 0 30 1022 1052 6/28/014:49 PM Evendell SE 128th Street/158th Ave SE PM PEAK HOUR 0, 0, C C " m • 0. ::; 0. 0 0 N ~ j e (.? " C , E 0, " u m en 0 13 • ·e 0. • .s .; .!l- 0. 0 l) 0, C ;;; 0 13 • ·e 0. • .5 .; .!l- 0. C ~ • "' 13 • ·e 0. ; 0 ~ 11; 0 N 0, C ·;; 0 N 'f "' 'ii " C • > w 0, C ·;; 0 N 'I' "' .; " C ~ w ·;; 0 N 'f "' 13 • ·e 0. ~ ... 0 0 N ·;; 0 N 'I' "' 13 • ~ 0. ~ ~ ... 0 0 N ~ 13 m ... -, 0 :,: " m • 0. 0 • 0 , ~ ti 2 .... c ~ • 0. EBLT 0 0 0 0 0 0 0 0 0 EBT 750 23 21 6 800 16 0 816 800 0.86 0.004 EBRT 14 0 0 1 15 0 21 15 36 WBLT 3 0 0 0 3 0 0 3 3 WBT 760 23 15 18 816 6 0 822 816 0.97 0.007 WBRT 0 0 0 0 0 0 0 0 0 NBLT 5 0 0 0 5 0 2 5 7 NBT 0 0 0 0 0 0 0 0 0 0.58 0 NBRT 5 0 0 0 5 0 0 5 5 SBLT 0 0 0 0 0 0 0 0 0 SBT 0 0 0 0 0 0 0 0 0 0 0 SBRT 0 0 0 0 0 0 0 0 0 1537 46 36 25 1644 22 23 1666 1667 6/28/014:49 PM Evendell SE 136th Sl/158th Ave SE PM PEAK HOUR "' C " m • a. ::; a. 0 0 N .c .. e C!) "C C , e "' " 0 m "' • 13 • e a. • .5 • " a: 0 () "' C i: tl • ·e a. • .5 • " a: C E C • 0: 13 • ·e a. '5 0 .c ~ cl 0 N "' C ·2 0 N 'f 0: • "C C • > w "' C ·2 0 N ~ • "C C • > w c 0 N 'I' 0: 13 • e a. ~ cl 0 N ' 0 13 m u. ' , 0 J: " m • a. • • • , "' " " 0 2 I- c ~ • a. EBLT 0 0 0 0 0 0 0 0 EBT 0 0 0 0 0 0 0 0 0.9 0 EBRT 0 0 0 0 0 0 14 14 WBLT 0 0 0 0 0 0 13 13 WBT 0 0 0 0 0 0 0 0 0.9 0 WBRT 0 0 0 0 0 0 0 0 NBLT 0 0 0 0 0 0 16 16 NBT 0 0 0 0 0 0 2 2 0.9 0 NBRT 0 0 0 0 0 0 9 9 SBLT 0 0 0 0 0 0 0 0 SBT 0 0 0 0 0 0 21 21 0.9 0 SBRT 0 0 0 0 0 0 0 0 0 0 0 0 0 0 75 75 6/28/014:49 PM Evendell SE 128th StreeU160th Ave SE PM PEAK HOUR 0, 0, C C "' m • a. ::; a. 0 0 N .c 1i e " "C C ~ e O> "' u m CD 0 1l • ·e a. • . 5 .; D. a: ci (.) O> C ;;: 0 1l • e a. • .5 .; .9 a. C £ C • "' 1l • e a. ; 0 .c ~ .. 0 0 N 0, C °'' 0 N ' "' .; "C C ~ w 0, C ·c 0 N ~ .; "C C • > w ·c 0 N ' "' 1l • ·e a. .c ~ .. 0 0 N ·c 0 N 'I' "' 1l • ·e a. .c ~ g 0 N ~ 1l m u. 5 0 :r "' m • a. 0 • 0 ~ CD "iii " 2 I- c ~ • a. EBLT 7 0 0 0 7 0 0 7 7 EBT 755 23 6 10 794 0 0 794 794 0.89 0 EBRT 56 2 15 0 73 16 0 89 73 WBLT 35 1 2 0 38 7 11 45 49 WBT 736 22 0 25 783 0 0 783 783 0.96 0 WBRT 5 0 0 0 5 0 0 5 5 NBLT 24 1 9 0 34 6 0 40 34 NBT 0 0 0 0 0 0 0 0 0 0.92 0 NBRT 22 1 1 0 24 3 6 27 30 I SBLT 4 0 0 0 4 0 0 4 4 SBT 1 0 0 0 1 0 0 1 1 0.46 0 SBRT 6 0 0 0 6 0 0 6 6 1651 50 33 35 1769 32 17 1801 1786 6/28/014:49 PM Evendell Site Access/160th Ave SE PM PEAK HOUR 0, C " m • Q. ::; Q. 0 0 N .c ~ e (!) "C C ~ e 0, ~ m ID j!l • ·e Q. • .E ,; 0. a: 0 u 0, C :i: 0 u • ·e Q. • .E ,; 0. a: C .'? C • "' u • ·e Q. 5 0 ~ ;: " 0 0 N 0, C ·c 0 N 1 "' ,; "C C • > w 0, C ·c 0 N ~ ,; "C C ~ w ·c 0 N 1 "' u " ·e Q. E ;: " 0 0 N 0 u n u. 5 0 J: " n " Q. 0 • 0 ~ ID ,! ~ 2 ,_ c ~ • Q. EBLT 0 0 0 0 0 9 0 9 EBT 0 0 0 0 0 0 0 0 0.9 0 EBRT 0 0 0 0 0 7 0 7 WBLT 0 0 0 0 0 0 0 0 WBT 0 0 0 0 0 0 0 0 0.9 0 WBRT 0 0 0 0 0 0 0 0 NBLT 0 0 0 0 0 4 0 4 NBT 44 1 10 0 55 0 0 55 0.9 0 NBRT 0 0 0 0 0 0 0 0 SBLT 0 0 0 0 0 0 0 0 SBT 91 3 17 0 111 0 0 111 0.9 0 SBRT 0 0 0 0 0 23 0 23 135 4 27 0 166 43 0 209 6/28/014:49 PM n---I -.(' I TWO-WAY STOP CONTROL SUMMARY General Information Site Information lAnalvst JMS Intersection SE 128TH ST/148TH AVE SE Aaencv/Co. GSA .lurisdiction KING CO. Date Performed Analvsis Year 2001 EXISTING Analvsis Time Period PM PEAK Proiect ID EVENDELL East/West Street: SE 128TH STREET North/South Street: 148TH AVENUE SE Intersection Orientation: East-West Studv Period hrs): 0.25 Vehicle Volumes and Adjustments Maior Street Eastbound Westbound Movement 1 2 3 4 5 6 L T R L T R Volume 65 1164 0 0 604 31 Peak-Hour Factor, PHF 0.90 1.00 0.90 1.00 1.00 1.00 Hourly Flow Rate, HFR 72 1164 0 0 604 31 Percent Heavy Vehicles 0 ----0 ---- Median Type Undivided RT Channelized 0 0 Lanes 0 2 0 0 2 0 Configuration LT T T TR Unstream Siana! 0 0 Minor Street Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R Volume 1 269 0 58 743 57 Peak-Hour Factor, PHF 0.90 0.90 1.00 1.00 0.90 0.90 Hourly Flow Rate, HFR 0 0 0 58 0 63 Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade (%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 0 0 1 0 1 Configuration L R Delav, Queue Lenath, and Level of Service l\pproach EB WB Northbound Southbound Movement 1 4 7 8 9 10 11 12 Lane Configuration LT L R V (vph) 72 58 63 C (m) (vph) 958 134 684 Ivie 0.08 0.43 0.09 95% queue length 0.24 1.91 0.30 Control Delay 9.1 50.9 10.8 LOS A F B Approach Delay ----30.0 Approach LOS ----D HCS2000TM Copyright© 2000 University or Florida. All Rights Reserved Version 4.1 .. -· ·-----··------··-.. r 3: SE 128TH ST & 148TH AVE SE (2004 WITHOUT PROJECT) PM PEAK 6/28/2001 Lanes, Volumes, Timings p -!> ""l;, if" <I-'-~ t /> \,. ! ./ Lane Groue EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations 'il tT+ 'il tT+ 4' 'f 4' r1 Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 Lane Width (ft) 12 12 12 12 12 12 12 12 12 12 12 12 Grade(%) 0% 0% 0% 0% Storage Length (fl) 0 0 0 0 0 0 0 0 Storage Lanes 1 0 1 0 0 1 0 1 Total Lost Time (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 Leading Detector (ft) 50 50 50 50 50 50 50 50 50 50 Trailing Detector (ft) 0 0 0 0 0 0 0 0 0 0 Turning Speed {mph) 15 9 15 9 15 9 15 9 Lane Util. Factor 1.00 0.95 0.95 1.00 0.95 0.95 1.00 1.00 1.00 1.00 1.00 1.00 Fri Protected 0.986 0.992 0.850 0.850 Flt Protected 0.950 0.950 0.953 0.953 Said. Flow (prot) 1770 3490 0 1770 3511 0 0 1775 1583 0 1775 1583 Fri Perm. 0.986 0.992 0.850 0.850 Flt Perm. 0.294 0.138 0.724 0.728 Satd. Flow (perm) 548 3490 0 257 3511 0 0 1349 1583 0 1356 1583 Right Turn on Red Yes Yes Yes Yes Satd. Flow (RTOR) 25 13 13 72 Headway Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Volume {vph) 76 1316 136 19 641 36 75 1 12 65 1 65 Confl. Peds. (#/hr) Peak Hour Factor 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 Grow1h Factor 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% Heavy Vehicles(%) 2% 2% 2% 2% 2% 2% 2% 2% 2% 2% 2% 2% Bus Blockages (#/hr) 0 0 0 0 0 0 0 0 0 0 0 0 Parking (#/hr) Mid-Block Traffic(%) 0% 0% 0% 0% Adj. Flow (vph) 84 1462 151 21 712 40 83 1 13 72 1 72 Lane Group Flow (vph) 84 1613 0 21 752 0 0 84 13 0 73 72 Turn Type Pm+Pt Pm+Pt Perm Perm Perm Perm Protected Phases 7 4 3 8 2 6 Permitted Phases 4 8 2 2 6 6 Detector Phases 7 4 3 8 2 2 2 6 6 6 Minimum Initial (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 Minimum Split (s) 8.0 20.0 8.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 Total Split (s) 8.0 32.0 0.0 8.0 32.0 0.0 20.0 20.0 20.0 20.0 20.0 20.0 Total Split(%) 13% 53% 0% 13% 53% 0% 33% 33% 33% 33% 33% 33% Maximum Green (s) 4.0 28.0 4.0 28.0 16.0 16.0 16.0 16.0 16.0 16.0 Yellow Time (s) 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 All-Red Time (s) 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Lead/Lag Lead Lag Lead Lag Lead-Lag Optimize? Yes Yes Yes Yes Vehicle Extension (s) 3.0 3.0 3.0 3.0 • 3.0 3.0 3.0 3.0 3.0 3.0 Minimum Gap (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 Time Before Reduce (s) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Time To Reduce (s) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Recall Mode None None None None Min Min Min Min Min Min Synchro 4 Report Page I Garrystr-st4 I 3: SE 128TH ST & 148TH AVE SE (2004 WITHOUT PROJECT) PM PEAK Lanes, Volumes, Timings p Lane Groue EBL Walk Time (s) Flash Dont Walk (s) Pedestrian Calls (#/hr) Lane Grp Cap (vph) 437 v/s Ratio Prot 0.01 vis Ratio Perm 0.11 Critical LG? Yes Act Effct Green (s) 31.3 Actuated g/C Ratio 0.62 vie Ratio 0.18 Uniform Delay, d1 2.6 Percentile Delay 3.5 Percentile LOS A Uniform Delay, d1 2.6 Platoon Factor 1.00 Iner. Delay, d2 0.2 Webster Delay 2.8 Webster LOS A Queue Length 50th (ft) 6 Queue Length 95th (ft) 19 Link Length (ft) 50th Up Block Time(%) 95th Up Block Time(%) Tum Bay Length (ft) 50th Bay Block Time % 95th Bay Block Time % Queuing Penalty (veh) Area Type: Other Cycle Length: 60 Actuated Cycle Length: 47.2 Natural Cycle: 60 --!> EBT 5.0 11.0 0 2029 0.46 Yes 27.3 0.62 0.74 7.6 9.7 A 7.6 1.00 2.2 9.9 A 96 #392 832 Control Type: Actuated-Uncoordinated Total Lost Time: 9 Sum of Critical vis Ratios: 0.54 Intersection vie Ratio: 0.63 Intersection Percentile Signal Delay: 8.9 Intersection Percentile LOS: A Intersection Webster Signal Delay: 8.8 Intersection LOS: A "'). 1" <I-"- EBR WBL WBT WBR 5.0 11.0 0 200 1918 0.00 0.21 0.06 29.9 24.1 0.56 0.55 0.07 0.39 2.8 6.1 3.7 6.9 A A 2.8 6.1 1.00 1.00 0.2 0.1 3.0 6.2 A A 1 57 7 108 3744 # 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles. Garrystr-st4 l ~ NBL 5.0 11.0 0 t /> NBT NBR 5.0 5.0 11.0 11.0 0 0 266 322 0.06 0.01 Yes 9.3 9.3 0.21 0.21 0.29 0.04 16.2 0.0 16.4 9.2 B A 16.2 0.0 1.00 1.00 3.1 0.2 19.3 0.2 B A 18 0 55 0 1762 6/28/2001 \. ! ./ SBL SBT SBR 5.0 5.0 5.0 11.0 11.0 11.0 0 0 0 267 370 0.05 0.04 9.3 9.3 0.21 0.21 0.26 0.18 16.1 0.0 16.2 5.5 B A 16.1 0.0 1.00 1.00 2.5 1.2 18.6 1.2 B A 16 0 49 24 1470 Synchro 4 Report Page2 3: SE 128TH ST & 148TH AVE SE (2004 WITHOUT PROJECT) PM PEAK 6/28/200 J Splits and Phases: 3: SE 128TH ST & 148TH AVE SE t 02 •7 : -, Garrystr-st4 J Synchro 4 Report Page3 3: SE 128TH ST & 148TH AVE SE (2004 WITH PROJECT R-6 ZONING) PM PEAK 6/28/2001 Lanes, Volumes, Timings .)>--I> ~ if ~ ~ "\ t I' \,. ! ,I Lane Groue EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations "l tTo "l tTo .f F .f F Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 Lane Width (ft) 12 12 12 12 12 12 12 12 12 12 12 12 Grade(%) 0% 0% 0% 0% Storage Length (ft) 0 0 0 0 0 0 0 0 Storage Lanes 1 0 1 0 0 1 0 1. Total Lost Time (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 Leading Detector (ft) 50 50 50 50 50 50 50 50 50 50 Trailing Detector (ft) 0 0 0 0 0 0 0 0 0 0 Turning Speed (mph) 15 9 15 9 15 9 15 9 Lane Util. Factor 1.00 0.95 0.95 1.00 0.95 0.95 1.00 1.00 1.00 1.00 1.00 1.00 Frt Protected 0.986 0.992 0.850 0.850 Flt Protected 0.950 0.950 0.953 0.953 Satd. Flow (pro!) 1770 3490 0 1770 3511 0 0 1775 1583 0 1775 1583 Frt Perm. 0.986 0.992 0.850 0.850 Flt Perm. 0.289 0.138 0.724 0.727 Said. Flow (perm) 538 3490 0 257 3511 0 0 1349 1583 0 1354 1583 Right Turn on Red Yes Yes Yes Yes Said. Flow (RTOR) 25 13 13 72 Headway Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Volume (vph) 76 1344 136 19 651 36 75 1 12 66 1 65 Confl. Peds. (#/hr) Peak Hour Factor 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 Grow1h Factor 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% Heavy Vehicles(%) 2% 2% 2% 2% 2% 2% 2% 2% 2% 2% 2% 2% Bus Blockages (#/hr) 0 0 0 0 0 0 0 0 0 0 0 0 Parking (#/hr) Mid-Block Traffic(%) 0% 0% 0% 0% Adj. Flow (vph) 84 1493 151 21 723 40 83 1 13 73 1 72 Lane Group Flow (vph) 84 1644 0 21 763 0 0 84 13 0 74 72 Turn Type Pm+Pt Pm+Pt Perm Perm Perm Perm Protected Phases 7 4 3 8 2 6 Permitted Phases 4 8 2 2 6 6 Detector Phases 7 4 3 8 2 2 2 6 6 6 Minimum Initial (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 Minimum Split (s) 8.0 20.0 8.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 Total Split (s) 8.0 32.0 0.0 8.0 32.0 0.0 20.0 20.0 20.0 20.0 20.0 20.0 Total Split(%) 13% 53% 0% 13% 53% 0% 33% 33% 33% 33% 33% 33% Maximum Green (s) 4.0 28.0 4.0 28.0 16.0 16.0 16.0 16.0 16.0 16.0 Yellow Time (s) 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 All-Red Time (s) 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Lead/Lag Lead Lag Lead Lag Lead-Lag Optimize? Yes Yes Yes Yes Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 Minimum Gap (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 Time Before Reduce (s) 0.0 0.0 a.a 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Time To Reduce (s) 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Recall Mode None None None None Min Min Min Min Min Min Synchro 4 Report Page I Garrystr-st4 I 3: SE 128TH ST & 148TH AVE SE (2004 WITH PROJECT R-6 ZONING) PM PEAK Lanes, Volumes, Timings .P Lane Groue EBL Walk Time (s) Flash Dont Walk (s) Pedestrian Calls (#/hr) Lane Grp Cap (vph) 433 vis Ratio Pro! 0.01 vis Ratio Perm 0.11 Critical LG? Yes Act Effct Green (s) 31.9 Actuated g/C Ratio 0.62 vie Ratio 0.18 Uniform Delay, d1 2.6 Percentile Delay 3.5 Percentile LOS A Uniform Delay, d1 2.6 Platoon Factor 1.00 Iner. Delay, d2 0.2 Webster Delay 2.8 Websler LOS A Queue Length 50th (ft) 6 Queue Length 95th (fl) 19 Link Length (fl) 50th Up Block Time (%) 95th Up Block Time(%) Turn Bay Length (fl) 50th Bay Block Time % 95th Bay Block Time % Queuing Penalty (veh) Area Type: Other Cycle Length: 60 Actuated Cycle Length: 47.9 Natural Cycle: 60 -I> EBT 5.0 11.0 0 2050 0.47 Yes 28.0 0.63 0.75 7.6 10.1 B 7.6 1.00 2.4 10.0 A 100 #405 832 Control Type: Actuated-Uncoordinated Total Lost Time: 9 Sum of Crilical v/s Ratios: 0.54 Intersection v/c Ratio: 0.64 Intersection Percentile Signal Delay: 9.2 Intersection Percentile LOS: A Intersection Webster Signal Delay: 8.9 Intersection LOS: A ""t, ef' <I-'- EBR WBL WBT WBR 5.0 11.0 0 201 1941 0.00 0.22 0.06 30.6 24.8 0.56 0.55 0.07 0.39 2.7 6.0 3.7 6.9 A A 2.7 6.0 1.00 1.00 0.2 0.1 2.9 6.2 A A 1 59 7 110 3744 # 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles. Garrystr-st4 I '\ t /> NBL NBT NBR 5.0 5.0 5.0 11.0 11.0 11.0 0 0 0 262 318 0.06 0.01 Yes 9.3 9.3 0.21 0.21 0.30 0.04 16.6 0.0 16.5 9.2 B A 16.6 0.0 1.00 1.00 3.2 0.2 19.8 0.2 B A 18 0 55 0 1762 6/28/2001 \. J. ./ SBL SBT SBR 5.0 5.0 5.0 11.0 11.0 11.0 0 0 0 263 365 0.05 0.04 9.3 9.3 0.21 0.21 0.26 0.19 16.4 0.0 16.3 5.5 B A 16.4 0.0 1.00 1.00 2.7 1.2 19.1 1.2 B A 16 0 49 24 1470 Synchro 4 Report Page2 3: SE 128TH ST & 148TH AVE SE (2004 WITH PROJECT R-6 ZONING) PM PEAK 3: SE 128TH ST & 148TH AVE SE ( -'-!> o4 07 Garrystr-st4 J 6/28/2001 Synchro 4 Report Page3 6: SE 128TH ST & 156TH AVE SE (2001 EXISTING) PM PEAK 6/20/200 I Lanes, Volumes, Timings -I> "'t, 1" <I-"\ /> Lane Groue EBT EBR WBL WBT NBL NBR Lane Configurations tt> ' tt ' f1 Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 Lane Width (ft) 12 12 12 12 12 12 Grade(%) 0% 0% 0% Storage Length (ft) 0 0 0 0 Storage Lanes 0 1 1 1 Total Lost Time (s) 3.0 3.0 3.0 3.0 3.0 3.0 Leading Detector (ft) 50 50 50 50 50 Trailing Detector (ft) 0 0 0 0 0 Turning Speed (mph) 9 15 15 9 Lane Util. Factor 0.95 0.95 1.00 0.95 1.00 1.00 Frt Protected 0.943 0.850 Flt Protected 0.950 0.950 Satd. Flow (prot) 3337 0 1770 3539 1770 1583 Frt Perm. 0.943 0.850 Flt Perm. 0.182 0.950 Said. Flow (perm) 3337 0 339 3539 1770 1583 Right Turn on Red Yes Yes Satd. Flow (RTOR) 266 139 Headway Factor 1.00 1.00 1.00 1.00 1.00 1.00 Volume (vph) 670 415 336 549 222 125 Confl. Peds. (#/hr) Peak Hour Factor 0.90 0.90 0.90 0.90 0.90 0.90 Growth Factor 100% 100% 100% 100% 100% 100% Heavy Vehicles (%) 2% 2% 2% 2% 2% 2% Bus Blockages (#/hr) 0 0 0 0 0 0 Parking (#/hr) Mid-Block Traffic(%) 0% 0% 0% Adj. Flow (vph) 744 461 373 610 247 139 Lane Group Flow (vph) 1205 0 373 610 247 139 Turn Type Pm+Pt Perm Protected Phases 4 3 8 2 Permitted Phases 8 2 Detector Phases 4 3 8 2 2 Minimum Initial (s) 4.0 4.0 4.0 4.0 4.0 Minimum Split (s) 20.0 8.0 20.0 20.0 20.0 Total Split (s) 22.0 0.0 13.0 35.0 20.0 20.0 Total Split (%) 40% 0% 24% 64% 36% 36% Maximum Green (s) 18.0 9.0 31.0 16.0 16.0 Yellow Time (s) 3.5 3.5 3.5 3.5 3.5 All-Red Time (s) 0.5 0.5 0.5 0.5 0.5 Lead/Lag Lag Lead Lead-Lag Optimize? Yes Yes Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 Minimum Gap (s) 3.0 3.0 3.0 3.0 3.0 Time Before Reduce (s) 0.0 0.0 0.0 0.0 0.0 Time To Reduce (s) 0.0 0.0 0.0 0.0 0.0 Recall Mode None None None Coord Coord Synchro 4 Report Page I Ganystr-st4 I 6; SE 128TH ST & 156TH AVE SE (2001 EXISTING) PM PEAK Lanes, Volumes, Timings --!> ~ "" <l-'\ /> Lane Groue EBT EBR WBL WBT NBL NBR Walk Time (s) 5.0 5.0 5.0 5.0 Flash Dont Walk (s) 11.0 11.0 11.0 11.0 Pedestrian Calls (#/hr) 0 0 0 0 Lane Grp Cap (vph) 1327 457 2059 547 585 vis Ratio Prot 0.31 0.15 0.17 0.14 vis Ratio Perm 0.33 0.07 Critical LG? Yes Yes Act Etfct Green (s) 19.0 32.0 32.0 17.0 17.0 Actuated g/C Ratio 0.35 0.58 0.58 0.31 0.31 vie Ratio 0.91 0.82 0.30 0.45 0.24 Uniform Delay, d1 13.2 7.5 5.8 15.2 0.0 Percentile Delay 20.0 18.1 5.9 15.8 3.5 Percentile LOS B B A B A Uniform Delay, d1 13.2 7.5 5.8 15.2 0.0 Platoon Factor 1.00 1.00 1.00 1.00 1.00 Iner. Delay, d2 9.2 10.8 0.1 2.7 1.0 Webster Delay 22.4 18.3 5.9 17.9 1.0 Webster LOS C B A B A Queue Length 50th (ft) 152 62 45 64 0 Queue Length 95th (ft) #279 #191 68 119 28 Link Length (ft) 3744 2512 1414 50th Up Block Time(%) 95th Up Block Time (%) Turn Bay Length (ft) 50th Bay Block Time % 95th Bay Block Time % Queuing Penalty (veh) Area Type: Other Cycle Length: 55 Actuated Cycle Length: 55 Offset: O (0%), Referenced to phase 2:NBL and 6:, Start of Green Natural Cycle: 55 Control Type: Actuated-Coordinated Total Lost Time: 6 Sum of Critical v/s Ratios: 0.61 Intersection v/c Ratio: 0.68 Intersection Percentile Signal Delay: 15.1 Intersection Percentile LOS: B Intersection Webster Signal Delay: 16.3 Intersection LOS: B # 95th percentile volume exceeds capacity, queue may be longer. . Queue shown is maximum after two cycles. Garrystr-st4 I 6/20/2001 Synchro 4 Report Page2 6: SE 128TH ST & 156TH AVE SE (2001 EXISTING) PM PEAK Splits and Phases: 6: SE 128TH ST & 156TH AVE SE f •3 -I> •4 ~9f ... ·· ,. ., Garrystr-st4 I ,. 6/20/2001 Synchro 4 Report Page3 6: SE 128TH ST & 156TH AVE SE (2004 WITHOUT PROJECT) PM PEAK 6/28/2001 Lanes, Volumes, Timings ~ ~ .(' -'\ /> Lane Graue EBT EBR WBL WBT NBL NBR Lane Configurations ti+ 'i tt 'i f' Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 Lane Width (ft) 12 12 12 12 12 12 Grade(%) 0% 0% 0% Storage Length (ft) 0 0 0 0 Storage Lanes 0 1 1 1- Total Lost Time ( s) 3.0 3.0 3.0 3.0 3.0 3.0 Leading Detector (ft) 50 50 50 50 50 Trailing Detector (ft) 0 0 0 0 0 Turning Speed (mph) 9 15 15 9 Lane Util. Factor 0.95 0.95 1.00 0.95 1.00 1.00 F rt Protected 0.941 0.850 Flt Protected 0.950 0.950 Said. Flow (prot) 3330 0 1770 3539 1770 1583 Frt Perm. 0.941 0.850 Flt Perm. 0.143 0.950 Said. Flow (perm) 3330 0 266 3539 1770 1583 Right Turn on Red Yes Yes Said. Flow (RTOR) 257 146 Headway Factor 1.00 1.00 1.00 1.00 1.00 1.00 Volume (vph) 720 461 350 601 245 131 Confl. Peds. (#/hr) Peak Hour Factor 0.90 0.90 0.90 0.90 0.90 0.90 Growth Factor 100% 100% 100% 100% 100% 100% Heavy Vehicles (%) 2% 2% 2% 2% 2% 2% Bus Blockages (#/hr) 0 0 0 0 0 0 Parking (#/hr) Mid-Block Traffic(%) 0% 0% 0% Adj. Flow (vph) 800 512 389 668 272 146 Lane Group Flow (vph) 1312 0 389 668 272 146 Turn Type Pm+Pt Prat Protected Phases 4 3 8 2 2 Permitted Phases 8 Detector Phases 4 3 8 2 2 Minimum Initial (s) 4.0 4.0 4.0 4.0 4.0 Minimum Split (s) 20.0 8.0 20.0 20.0 20.0 Total Split {s) 28.0 0.0 16.0 44.0 21.0 21.0 Total Split(%) 43% 0% 25% 68% 32% 32% Maximum Green (s) 24.0 12.0 40.0 17.0 17.0 Yellow Time (s) 3.5 3.5 3.5 3.5 3.5 All-Red Time ( s) 0.5 0.5 0.5 0.5 0.5 Lead/Lag "Lag Lead Lead-Lag Optimize? Yes Yes Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 Minimum Gap (s) 3.0 3.0 3.0 3.0 3.0 Time Before Reduce (s) 0.0 0.0 0.0 0.0 0.0 Time To Reduce (s) 0.0 0.0 0.0 0.0 0.0 Recall Mode None None None Coard Coard Synchro 4 Report Page I Garrystr-st4 I 6: SE 128TH ST & 156TH AVE SE (2004 WITHOUT PROJECT) PM PEAK Lanes, Volumes, Timings --!> "'\, 1'" -~ f> Lane Group EBT EBR WBL WBT NBL NBR Walk Time (s) 5.0 5.0 5.0 5.0 Flash Dont Walk (s) 11.0 11.0 11.0 11.0 Pedestrian Calls (#/hr) 0 0 0 0 Lane Grp Cap (vph) 1425 459 2200 506 557 vis Ratio Prot 0.35 0.17 0.19 0.15 0.07 vis Ratio Perm 0.36 Critical LG? Yes Yes Act Effct Green (s) 24.7 40.4 40.4 18.6 18.6 Actuated g/C Ratio 0.38 0.62 0.62 0.29 0.29 vie Ratio 0.92 0.85 0.30 0.54 0.26 Uniform Delay, d1 15.3 12.2 5.7 19.6 0.0 Percentile Delay 21.2 21.7 5.7 20.6 4.0 Percentile LOS C C A C A Uniform Delay, d1 15.3 12.2 5.7 19.6 0.0 Platoon Factor 0.99 0.98 0.95 1.03 1.00 Iner. Delay, d2 10.0 13.5 0.1 4.1 1.1 · Webster Delay 25.1 25.5 5.5 24.1 1.1 Webster LOS C C A C A Queue Length 50th (ft) 207 93 54 92 0 Queue length 95th (ft) #348 #233 77 160 34 link length (ft) 3744 2512 1414 50th Up Block Time(%) 95th Up Block Time (%) Turn Bay Length (ft) 50th Bay Block Time % 95th Bay Block Time % Queuing Penalty (veh) Area Type: Other Cycle Length: 65 Actuated Cycle Length: 65 Offset: 0 (0%), Referenced to phase 2:NBL and 6:, Start of Green Natural Cycle: 65 Control Type: Actuated-Coordinated Total lost Time: 6 Sum of Critical vis Ratios: 0.67 Intersection vie Ratio: 0. 7 4 Intersection Percentile Signal Delay: 16.6 Intersection Percentile LOS: B Intersection Webster Signal Delay: 19.1 Intersection LOS: B # 95th percentile volume exceeds capacity; queue may be longer. Queue shown is maximum after two cycles. Garrystr-st41 6/28/2001 Synchro 4 Report Page2 6: SE 128TH ST & 156TH AVE SE (2004 WITHOUT PROJECT) PM PEAK 6/28/2001 Splits and Phases: 6: SE 128TH ST & 156TH AVE SE Garrystr-st4 I Synchro 4 Report Page3 6: SE 128TH ST & 156TH AVE SE (2004 WITH PROJECT R-6 ZONING) PM PEAK 6/28/2001 Lanes, Volumes, Timings ~ ~ -'\ ~ ~ Lane Groue EBT EBR WBL WBT NBL NBR Lane Configurations tr. "i ti' "i f' Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 lane Width (ft) 12 12 12 12 12 12 Grade(%) 0% 0% 0% Storage length (ft) 0 0 0 0 Storage lanes 0 1 1 1 Total lost Time (s) 3.0 3.0 3.0 3.0 3.0 3.0 Leading Detector (ft) 50 50 50 50 50 Trailing Detector (ft) 0 0 0 0 0 Turning Speed (mph) 9 15 15 9 Lane Util. Factor 0.95 0.95 1.00 0.95 1.00 1.00 Frt Protected 0.942 0.850 Flt Protected 0.950 0.950 Satd. Flow (prot) 3334 0 1770 3539 1770 1583 Frt Perm. 0.942 0.850 Flt Perm. 0.148 0.950 Said. Flow (perm) 3334 0 276 3539 1770 1583 Right Turn on Red Yes Yes Said. Flow (RTOR) 280 146 Headway Factor 1.00 1.00 1.00 1.00 1.00 1.00 Volume (vph) 741 469 350 603 253 131 Confl. Peds. (#/hr) Peak Hour Factor 0.90 0.90 0.90 0.90 0.90 0.90 Growth Factor 100% 100% 100% 100% 100% 100% Heavy Vehicles (%) 2% 2% 2% 2% 2% 2% Bus Blockages (#/hr) 0 0 0 0 0 0 Parking (#/hr) Mid-Block Traffic(%) 0% 0% 0% Adj. Flow (vph) 823 521 389 670 281 146 Lane Group Flow (vph) 1344 0 389 670 281 146 Turn Type Pm+Pt Pro! Protected Phases 4 3 8 2 2 Permitted Phases 8 Detector Phases 4 3 8 2 2 Minimum Initial (s) 4.0 4.0 4.0 4.0 4.0 Minimum Split (s) 20.0 8.0 20.0 20.0 20.0 Total Split (s) 27.0 0.0 13.0 40.0 20.0 20.0 Total Split(%) 45% 0% 22% 67% 33% 33% Maximum Green (s) 23.0 9.0 36.0 16.0 16.0 Yellow Time (s) 3.5 3.5 3.5 3.5 3.5 All-Red Time (s) 0.5 0.5 0.5 0.5 0.5 Lead/Lag lag lead Lead-Lag Optimize? Yes Yes Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 Minimum Gap (s) 3.0 3.0 3.0 3.0 3.0 Time Before Reduce (s) 0.0 0.0 0.0 0.0 0.0 Time To Reduce (s) 0.0 0.0 0.0 0.0 0.0 Recall Mode None None None Coord Coord Synchro 4 Report Page I Garrystr-st41 6: SE 128TH ST & 156TH AVE SE (2004 WITH PROJECT R-6 ZONING) PM PEAK Lanes, Volumes, Timings -i> ~ q <I-"\ ~ Lane Groue EBT EBR WBL WBT NBL NBR Walk Time (s) 5.0 5.0 5.0 5.0 Flash Don! Walk (s) 11.0 11.0 11.0 11.0 Pedestrian Calls (#/hr) 0 0 0 0 Lane Grp Cap (vph) 1481 417 2159 513 563 vis Ratio Pro! 0.36 0.16 0.19 0.16 0.08 vis Ratio Perm 0.41 Critical LG? Yes Yes Act Effct Green (s) 23.6 36.6 36.6 17.4 17.4 Actuated g/C Ratio 0.39 0.61 0.61 0.29 0.29 v/c Ratio 0.91 0.93 0.31 0.55 0.26 Uniform Delay, d1 13.4 11.5 5.6 18.0 0.0 Percentile Delay 18.2 34.4 5.7 18.8 3.8 Percentile LOS B C A B A Uniform Delay, d1 13.4 11.5 5.6 18.0 0.0 Platoon Factor 0.98 0.99 0.97 1.02 1.00 Iner. Delay, d2 8.3 27.8 0.1 4.2 1.1 Webster Delay 21.5 39.1 5.5 22.5 1.1 Webster LOS C D A C A Queue Length 50th (fl) 185 86 51 86 0 Queue Length 95th (ft) #325 #238 75 153 32 Link Length (ft) 3744 2512 1414 50th Up Block Time(%) 95th Up Block Time (%) Turn Bay Length (ft) 50th Bay Block Time % 95th Bay Block Time % Queuing Penalty (veh) Area Type: Other Cycle Length: 60 Actuated Cycle Length: 60 Offset O (0%), Referenced to phase 2:NBL and 6:, Start of Green Natural Cycle: 65 Control Type: Actuated-Coordinated Total Lost Time: 6 Sum of Critical vis Ratios: 0. 72 Intersection v/c Ratio: 0.80 Intersection Percentile Signal Delay: 16.8 Intersection Percentile LOS: B Intersection Webster Signal Delay: 19.2 Intersection LOS: B # 95th percentile volume exceeds capacity, queue may be longer. Queue shown is maximum after two cycles. Garrystr-st4 I 6/28/2001 Synchro 4 Report Page2 ?: SE 128TH ST & 156TH AVE SE (2004 WITH PROJECT R-6 ZONING) PM PEAK 6/28/2001 Splits and Phases: 6: SE 128TH ST & 156TH AVE SE -r· ms Garrystr-st41 Synchro 4 Report · Page 3 TWO-WAY STOP CONTROL SUMMARY General Information Site Information Analyst JMS Intersection SE 136TH ST 1156TH A VE SE AQency/Co. GSA Jurisdiction KING CO. Date Performed Analysis Year 2001 EXISTING Analysis Time Period PM PEAK Proiect ID EVENDELL East/West Street: SE 136TH STREET North/South Street: 156TH AVENUE SE Intersection Orientation: North-South Study Period hrs : 0.25 Vehicle Volumes and Adiustments Major Street Northbound Southbound Movement 1 2 3 4 5 6 L T R L T R Volume 0 239 0 0 647 2 Peak-Hour Factor, PHF 0.90 0.90 1.00 1.00 0.90 0.90 Hourly Flow Rate, HFR 0 265 0 o 718 o Percent Heavy Vehicles 0 ----0 ---- Median Type Undivided RT Channelized 0 0 Lanes 0 1 0 0 1 0 Configuration LT LT Uostream Sional 0 0 Minor Street Westbound Eastbound Movement 7 8 9 10 11 12 L T R L T R Volume 0 0 0 o 0 1 Peak-Hour Factor, PHF 1.00 1.00 1.00 0.90 1.00 0.90 ,ourly Flow Rate, HFR 0 0 0 o 0 1 Percent Heavy Vehicles 0 0 o 0 0 o Percent Grade (%) 0 o Flared Approach N N Storage 0 0 RT Channelized 0 o Lanes 0 0 0 0 0 0 Configuration LR Delay, Queue Length, and Level of Service Approach NB SB Westbound Eastbound Movement 1 4 7 8 9 10 11 12 Lane Configuration LT LT LR V (Vph) 0 0 1 C (m) (vph) 892 1311 432 v/c 0.00 0.00 0.00 95% queue length 0.00 0.00 0.01 Control Delay 9.0 7.7 13.4 LOS A A B /'.\pproach Delay ----13.4 A.pproach LOS ----B HCS2000TM Copyrighl © 2000 University of Flonda, All Rights Reserved Vers10n 4.1 TWO-WAY STOP CONTROL SUMMARY General Information Site Information f",nalvst JMS Intersection SE 136TH ST!156TH A VE SE IAnencv/Co. GSA Jurisdiction KING CO Date Performed l\nalysis Year 2004 WITHOUT PROJECT ~nalvsis Time Period PM PEAK Proiect ID EVENDELL East/West Street: SE 136TH STREET North/South Street: 156THAVENUE SE Intersection Orientation: North-South Study Period (hrs): 0.25 Vehicle Volumes and Adjustments Major Street Northbound Southbound Movement 1 2 3 4 5 6 L T R L T R Volume 28 253 0 0 670 36 Peak-Hour Factor, PHF 0.90 0.90 1.00 1.00 0.90 0.90 Hourly Flow Rate, HFR 31 281 0 0 744 40 Percent Heavy Vehicles 0 ----0 ---- Median Type Undivided RT Channelized 0 0 Lanes 1 1 0 0 1 1 Configuration L T T R Uostream Sianal 0 0 Minor Street Westbound Eastbound Movement 7 8 9 10 11 12 L T R L T R Volume 0 0 0 11 0 24 Peak-Hour Factor, PHF 1.00 1.00 1.00 0.90 1.00 0.90 Hourly Flow Rate, HFR 0 0 0 12 0 26 Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade (%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 0 0 0 0 0 Configuration LR Delav, Queue Lenath, and Level of Service l\pproach NB SB Westbound Eastbound Movement 1 4 7 8 9 10 11 12 Lane Configuration L LR V (vph) 31 38 C (m) (vph) 843 334 vie 0.04 0.11 95% queue length 0.11 0.38 Control Delay 9.4 17.2 LOS A C 11.pproach Delay ----17.2 Approach LOS ----C t./CS2000 n._t Copyrigh1 © 2000 Universi1y of Florida, All Rights Reserved Version 4.1 ... -.. --·---... _. __ . ··-,.r -r ... _ ,,1 __ c. __ ,-. __ . __ 1 n---1 -C I TWO-WAY STOP CONTROL SUMMARY General Information Site Information Analvst JMS Intersection SE 136TH ST/156TH A VE SE Aaencv/Co. GSA · •urisdiction KING CO. Date Performed Analysis Year 2004 WITH PROJECT R-6 ZONING IAnalvsis Time Period PM PEAK Proiect ID EVENDELL East/West Street: SE 136TH STREET North/South Street: 156TH A VENUE SE Intersection Orientation: North-South Studv Period hrs : 0.25 Vehicle Volumes and Adiustments Maior Street Northbound Southbound Movement 1 2. 3 4 5 6 L T R L T R Volume 28 253 6 8 670 36 Peak-Hour Factor, PHF 0.90 0.90 1.00 1.00 0.90 0.90 Hourly Flow Rate, HFR 31 281 6 8 744 40 Percent Heavy Vehicles 0 ----0 ---- Median Type Undivided RT Channelized 0 0 Lanes 1 1 0 0 1 1 Configuration L TR LT R Uostream Sianal 0 0 Minor Street Westbound Eastbound Movement 7 8 9 10 11 12 L T R L T R Volume 8 0 8 11 0 24 Peak-Hour Factor, PHF 1.00 1.00 1.00 0.90 1.00 0.90 Hourly Flaw Rate, HFR 8 0 8 12 0 26 Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade (%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 1 0 0 1 0 Configuration LTR LTR Delav, Queue Lenath, and Level of Service Approach NB SB Westbound Eastbound Movement 1 4 7 8 9 10 11 12 Lane Configuration L LT LTR LTR Iv (vph) 31 8 16 38 C (m) (vph) 843 1287 268 294 vie 0.04 0.01 0.06 0.13 95% queue length 0.11 0.02 0.19 0.44 Control Delay 9.4 7.8 19.3 19.1 LOS A A C C Approach Delay ----19.3 19.1 Approach LOS .. .. C C HC52000TM Copyright (i) 2000 Universi1y of Florida, All Rights Reserved Version 4.1 . -.. -----···-----. ··--r •y-____ ''·'-·· "·--,..... _____ 1 n ___ 1 _r , TWO-WAY STOP CONTROL SUMMARY General Information Site Information Analyst JMS Intersection SE 128TH ST/160TH AVE SE Aoency/Co. GSA lurisdiction KING CO. Date Performed Analysis Year 2001 EXISTING IAnalvsis Time Period PM PEAK Project ID EVENDELL East/West Street: SE 128TH STREET North/South Street: 160TH AVENUE SE Intersection Orientation: East-West Study Period (hrs): 0.25 Vehicle Volumes and Adjustments Maior Street Eastbound Westbound Movement 1 2 3 4 5 6 L T R L T R Volume 7 755 56 35 736 5 Peak-Hour Factor, PHF 0.90 1.00 0.90 1.00 1.00 1.00 Hourly Flow Rate, HFR 7 755 62 35 736 5 Percent Heavy Vehicles 0 ----0 .. -- Median Type Undivided RT Channelized 0 0 Lanes 0 2 0 0 2 0 Configuration LT TR LT TR Upstream Sional 0 0 Minor Street Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R Volume 24 0 22 4 1 6 Peak-Hour Factor, PHF 0.90 0.90 1.00 1.00 0.90 0.90 Hourly Flow Rate, HFR 26 0 22 4 1 6 Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade (%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 1 0 0 1 0 Configuration LTR LTR Delay, Queue Length, and Level of Service Approach EB WB Northbound Southbound Movement 1 4 7 8 9 10 11 12 Lane Configuration LT LT LTR LTR V (Vph) 7 35 48 11 C (m) (vph) 875 820 199 219 vie 0.01 0.04 0.24 0.05 95% queue length 0.02 0.13 0.91 0.16 Control Delay 9.1 9.6 28.7 22.3 LOS A A D C Approach Delay ----28.7 22.3 Approach LOS --.. D C Copynght iD 2000 Umvers11y of Flonda. All Rights Reserved Version4.I ... -. ·-----·-----······r ·r ... _ '''-·· ('·--,-. __ . __ 1 TWO-WAY STOP CONTROL SUMMARY General Information Site Information Analvst JMS Intersection SE 128TH ST/160TH A VE SE v'\aencv/Co. GSA lurisdiction KING CO. Date Performed O.nalvsis Year 2004 WITHOUT PROJECT Analvsis Time Period PM PEAK Project ID EVENDELL East/West Street: SE 128TH STREET North/South Street: 160TH AVENUE SE Intersection Orientation: East-West Studv Period hrs): 0.25 Vehicle Volumes and Adjustments Maier Street Eastbound Westbound Movement 1 2 3 4 5 6 L T R L T R Volume 7 794 73 38 783 5 Peak-Hour Factor, PHF 0.90 1.00 0.90 1.00 1.00 1.00 Hourly Flow Rate, HFR 7 794 81 38 783 5 Percent Heavy Vehicles 0 ----0 ---- Median Type Undivided RT Channelized 0 0 Lanes 0 2 0 0 2 0 Configuration LT TR LT TR Uostream Sianal 0 0 Minor Street Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R Volume 34 0 24 4 1 6 Peak-Hour Factor, PHF 0.90 0.90 1.00 1.00 0.90 0.90 Hourly Flow Rate, HFR 37 0 24 4 1 6 Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade (%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 1 0 0 1 0 Configuration LTR LTR Delav, Queue Lenath, and Level of Service Approach EB WB Northbound Southbound Movement 1 4 7 8 9 10 11 12 Lane Configuration LT LT LTR LTR V (Vph) 7 38 61 11 C (m) (vph) 840 780 163 194 Ivie 0.01 0.05 0.37 0.06 95% queue length 0.03 0.15 1.59 0.18 Control Delay 9.3 9.9 39.7 24.7 LOS A A E C Approach Delay .. .. 39.7 24.7 v'lpproach LOS --.. E C IICS2000TM Copyright© 2000 University of Florida. All Rights Reserved Version 4.1 -.. -----···--·--..... ,. T •.. -\'lT_ •. ('. __ ,-. __ • __ J r, ___ I -I'1 TWO-WAY STOP CONTROL SUMMARY General Information Site Information 1/\nalvst JMS Intersection SE 128TH ST/160TH A VE SE Aaencv/Co. GSA Jurisdiction KING CO. Date Performed Analysis Year 2004 WITH PROJECT R-4 la nalvsis Time Period PM PEAK ZONING Proiect ID EVENDELL East/West Street: SE 128TH STREET North/South Street: 160TH A VENUE SE Intersection Orientation: East-West Studv Period hrs : 0.25 Vehicle Volumes and Adiustments Maior Street Eastbound Westbound Movement 1 2 3 4 5 6 L T R L T R Volume 7 794 89 45 783 5 Peak-Hour Factor, PHF 0.90 1.00 0.90 1.00 1.00 1.00 Hourly Flow Rate, HFR 7 794 98 45 783 5 Percent Heavy Vehicles 0 ----0 ---- Median Type Undivided RT Channelized 0 0 Lanes 0 2 0 0 2 0 Configuration LT TR LT TR Uostream Sianal 0 0 Minor Street Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R Volume 40 0 27 4 1 6 Peak-Hour Factor, PHF 0.90 0.90 1.00 1.00 0.90 0.90 Hourly Flow Rate, HFR 44 0 27 4 1 6 Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade (%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 1 0 0 1 0 Configuration LTR LTR Delav, Queue Lenath, and Level of Service !Approach . EB WB Northbound Southbound Movement 1 4 7 8 9 10 11 12 Lane Configuration LT LT LTR LTR h, (vph) 7 45 71 11 C (m) (vph) 840 769 152 187 h,/c 0.01 0.06 0.47 0.06 95% queue length 0.03 0.19 2.17 0.19 Control Delay 9.3 10.0-47.9 25.5 LOS A A E D Approach Delay ----47.9 25.5 Approach LOS ----E D HCS2000TM Copyright© 2000 Universi1y of Florida. All Rights Reserved Version 4.1 ...... -. ·-----·-·-··--···--r T ... -\\l-.. r. __ r"--•--l r. ___ 1 -·' TWO-WAY STOP CONTROL SUMMARY General Information Site Information Intersection SITE ACCESS/160TH AVE Analyst JMS SE Aaency/Co. GSA Jurisdiction KING CO. Date Performed ~nalysis Year 2004 WITH PROJECT R-4 Analysis Time Period PM PEAK ZONING Project ID EVENDELL East/West Street: SITE ACCESS North/South Street: 160TH AVENUE SE I Intersection Orientation: North-South Study Period hrs): 0.25 Vehicle Volumes and Adjustments Maior Street Northbound Southbound Movement 1 2 3 4 5 6 L T R L T R Volume 4 55 30 0 111 23 Peak-Hour Factor, PHF 0.90 0.90 1.00 1.00 0.90 0.90 Hourly Flow Rate, HFR 4 61 0 0 123 25 Percent Heavy Vehicles 0 ----0 ---- Median Type Undivided RT Channelized 0 0 Lanes 0 1 0 0 1 0 Configuration LT TR Upstream Si(lnal 0 0 Minor Street Westbound Eastbound Movement 7 8 9 10 11 12 L T R L T R Volume 0 0 0 9 796 7 Peak-Hour Factor, PHF 1.00 1.00 1.00 0.90 1.00 0.90 Hourly Flow Rate, HFR 0 0 0 10 0 7 Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade (%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 0 0 0 0 0 Configuration LR Delay, Queue Lenqth, and Level of Service Approach NB SB Westbound Eastbound Movement 1 4 7 8 9 10 11 12 Lane Configuration LT LR V (vph) 4 17 C (m) (vph) 1446 835 vie 0.00 0.02 95% queue length 0.01 0.06 Control Delay 7.5 9.4 LOS A A Approach Delay ----9.4 Approach LOS ----A HC51000TM Copyriih1 © 2000 Universi1y of Florida. All Rights Reserved Version 4.1 Tl---1 -l' I TWO-WAY STOP CONTROL SUMMARY General Information Site Information Analvst JMS Intersection SE 136TH ST/158TH A VE SE Anencv/Co. GSA 'urisdiction KING CO. Date Performed !Analysis Year 2004 WITH PROJECT R-6 Analvsis Time Period PM PEAK ZONING Project ID EVENDELL East/West Street: SE 136TH STREET North/South Street: 158TH AVENUE SE Intersection Orientation: North-South Study Period hrs : 0.25 Vehicle Volumes and Adiustments Maior Street · Northbound Southbound Movement 1 2 3 4 5 6 L T R L T R Volume 16 2 9 0 21 0 Peak-Hour Factor, PHF 0.90 0.90 1.00 1.00 0.90 0.90 Hourly Flow Rate, HFR 17 2 9 0 23 0 Percent Heavy Vehicles 0 ----0 ---- Median Type -Undivided RT Channelized 0 0 Lanes 0 1 0 0 1 0 Configuration LTR LTR Uostream Sianal 0 0 Minor Street Westbound Eastbound Movement 7 8 9 10 11 12 L T R L T R Volume 13 0 0 0 0 14 Peak-Hour Factor, PHF 1.00 1.00 1.00 0.90 1.00 0.90 Hourly Flow Rate, HFR 13 0 0 0 0 15 Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade (%) 0 0 Flared Approach N N Storage 0 0 RT Channelized 0 0 Lanes 0 1 0 0 1 0 Configuration LTR LTR Delav, Queue LenQth, and Level of Service Approach NB SB Westbound Eastbound Movement 1 4 7 8 9 10 11 12 Lane Configuration LTR LTR LTR LTR Iv (vph) 17 0 13 15 C (m) (vph) 1605 1621 906 1060 vie 0.01 0.00 0.01 0.01 95% queue length 0.03 0.00 0.04 0.04 Control Delay 7.3 7.2 9.0 8.4 LOS A A A A !Approach Delay ----9.0 8.4 Approach LOS A . A ---- HCS2000TM Copyright (0 2000 University of Florida. All Rights Reserved Version 4.1 LEFT TURN LANE WARRANT CALCULATION Intersection: SE 136th StreeV156th Avenue SE Project: Volumes: INPUTS: Evendell PM Peak V0 = volume advancing = Vo = volume opposing = v, = volume left turns= v = operating speed = p threshold = utilization factor threshold (based on speed) T = average time to make left turn = lg = critical gap = t. = left turn exit = CALCULATIONS: L= V,N. t0 = average headway (3600N0 ) Ao= vehicles opposing/sec (V of3600) tw = [3600/{V0 e-(Votg/3600)}]-(3600N0 )-t,, 714 vph 287 vph 8 vph 35 mph 0.0225 40 mph, p = 0.020; 50 mph, p = 0.015; 60 mph, p = 0.010 3 sec 5 sec 1.9 sec 1.12% percent 5.04 sec 0.080 veh/sec 1.14sec ,., = # of arrivals/hour of through vehicles behind left turning vehicles = [L(1-L)V0 ](t.+t,,)/[(2/3)t,,] p = e·""'•(A.ot,,+1) A= (1-P)3600 B = ( ( 1-P ))3600/2 µ = (3600-A-B)/T p = ),,/µ IS LEFT TURN POCKET WARRANTED? ENG/97PROJ/97032.04/LtTumCalcs.xls6128/015:16 PM 7.16 0.94 220 110 1090 0.0066 NO > ::I: 0 0 LLJ ~ ::i ....J 0 > 100 80 RIGHT-TURN LANE GUIDELINES Right-Turn Pocket or Toper CFigure 910-120> Recommended Right-Turn Lone CFigure 910-12bl Recommended ~ 60 ::i I- I-G 4o -a:: a:: ::i 0 ::I: :,,:: < LLJ a.. 20 0 ' ' Rodius Only Recommended C Figure 910 -7 l 100 200 ~300 400 500 600 PEAK HOUR APPROACH VOLUME <OOHVl~ vfAIL tlW £. APPeoACJ-1 VOi.., =-231 ?[t,..\(. \-\OH[. er ·,v Uj VDL.; (.r;; o For two lone highways, use the peak hour approach volume (through+ right turn). 700 For multi lone, high speed (posted at 45 mph or obovel highways, use the right lone peak hour approach volume (through+ right turn>. Note: When al I three of the fol lowing conditions ore met, the right turn OOHV is reduced by 20 VPH. 1. Posted speed 45 mph or under. 2. Tight-turn volume greater than 40 VPH. 3. Total approach volume less than 300 VPH. Intersections At Grade Page 910-26 Right-Turn Lane Guidelines Figure 910-11 (Metric) Design Manual August 1997 LEFT TURN LANE WARRANT CALCULATION Intersection: SE 136th Street/158th Avenue SE Evendell Project: Volumes: INPUTS: PM Peak v. = volume advancing = Vo = volume opposing = v, = volume left turns= v = operating speed = p threshold = utilization factor threshold {based on speed) T = average time to make left tum = t,, = critical gap = t. = left turn exit = CALCULATIONS: L = V,N. 10 = average headway (3600N0 ) Ao= vehicles opposing/sec (Vof3600) lw = [3600/{V0 e·(Votgl36001]-(3600N0 )-t,, 27 vph 21 vph 16 vph 25 mph 0.0275 40 mph, p = 0.020; 50 mph, p = 0.015; 60 mph, p = 0.010 3 sec 5 sec 1.9 sec 59.26% percent 133.33 sec O. 006 veh/sec 0.07 sec "-1 = # of arrivals/hour of through vehicles behind left turning vehicles = [L{1-L)V0 J{lw+t.,)/[{2/3)t.] 0.14 Jl = e·l.otg{1'.0 1g+1) 1.00 A= {1-J\)3600 2 B= { { 1-Jl ))3600/2 1 µ= (3600-A-B)/T 1199 p= 1'.,/µ 0.0001 IS LEFT TURN POCKET WARRANTED? NO ENG/97PROJl97032.04/LtTumCalcs.xls > :c Cl C, w :::E: :::i ..J 0 > 80 ~ 60 :::i ~ ~ G 4o -a:: a:: :::i 0 :c :0.:: <t w 0.. 20 0 RIGHT-TURN LANE GUIDELINES Right-Turn Pocket or Toper (Figure 910-120> Recommended Radius Only Recommended c Figure 910 -7 > Right-Turn Lone (Figure 910-12bl Recommended 100 200 300 400 500 600 PEAK HOUR APPROACH VOLUME COOHV>~ flfv\ f~ 1-\'l)u.rt, M'PR VOL= ;2./ r M. pr.., f+D~ t.. 12:r -n,.. ll lJ v bL.. == o o For two lone highways, use the peck hour approach volume (through+ right turn>. 700 For multi lone, high speed <posted at 45 mph or above) highways, use the right lone peak hour approach volume (through+ right turn>. Note: When ol I three of the fol lowing conditions ore met, the right turn DDHV is reduced by 20 VPH. 1. Pasted speed 45 mph or under. 2. Tight-turn volume greater than 40 VPH. 3. Tatel approach volume less than 300 VPH. lnterset:t/ons At Grade Page910-26 Right-Tum Lane Guidelines Rgure 910-11 (Metric) Design Manual August1997 r--. ( ., LEFT TURN LANE WARRANT CALCULATION Intersection: Site Access/160th Avenue SE Evendell Project: Volumes: INPUTS: PM Peak volume advancing = volume opposing = volume left turns = operating speed = p threshold = utilization factor threshold (based on speed) T = average time to make left turn = t,, = critical gap = t. = left turn exit = CALCULATIONS: L= VLNa t. = average headway (3600N8 ) vehicles opposing/sec (V o/3600) [3600/{V 0 e·!Votgl3600)}]-(3600N 0 )-t,, 59 vph 134 vph 4 vph 25 mph 0.0275 40 mph, p = 0.020; 50 mph, p = 0.015; 60 mph, p = 0.010 3 sec 5 sec 1.9 sec 6. 78% percent 61.02 sec 0.037 veh/sec 0.50 sec # of arrivals/hour of through vehicles behind left turning vehicles = [L(1-L)V.](t,,+t.,)/[(2/3)t,,] 0.22 p = e·>otg(1col,,+1) 0.98 A= (1-1})3600 55 B= ( ( 1-P ))3600/2 28 µ= (3600-A-B)/T 1172 p= 1c,Iµ 0.0002 IS LEFT TURN POCKET WARRANTED? NO ENG/97PROJ/97032.04/LtTumCalcs.xls ... '. ,. LLJ :::E :::i _J 0 > 80 ~ 60 :::i I- I- ~ 40 -a: RIGHT-TURN LANE GUIDELINES Right-Turn Pocket or Toper <Figure 910-120> Recommended Right-Turn Lone (Figure 910-12b> Recommended a: :::i 0 I i~ 1--~~~-t--1-~ ~ < w a.. 20 0 Rodi4s Only Recommended FiJure 910 -7 > I I 00 1=4 200 300 400 PEAK HOUR APPROACH PCAIL ftt-AfPr VDL-=-\ 34- v C A l -.+ f, ~-r :\.\ 0·) V D Lr :_, 3 500 600 VOLUME <DDHV)o o For two lone highways, use the peak hour approach volume <through+ right turn). 700 For multi lone, high speed <posted at 45 mph or above> highways, use the right lone peak hour approach volume (through+ right turn>. Note: When al I three of the fol lowing conditions ore met, the right turn OOHV is reduced by 20 VPH. 1. Posted speed 45 mph or.under. 2. Tight-turn volume greater than 40 VPH. 3. Total approach volume less than 300 VPH. Right-Tum Lane Guidelines Figure 910-11 (Metric) Intersections At Grade Page910-26 Design Manual August 1997 ,,---. ( IHABH"ll"A"ll" Tiec1HN011.0G1Es October 28, 2002 Centurion Development Services 22617 -8th Drive SE Bothell, Washington 98021 RE: ADDENDUM to the Wetland Evaluation and Delineation Report, Wildlife Habitat Evaluation, and Conceptual Wetland Mitigation Plan for the Evendell Project Site Dear Mr. Romano, Subsequent to the preparation of the "Wetland Evaluation and Delineation Report, Wildlife Habitat Evaluation, and Conceptual Wetland Mitigation Plan" for the Evendell Project Site, (Habitat Technologies, May 2001) the Selected Action Plan has been modified. This addendum describes the changes from the original report. The Evendell Project Site is approximately 14 acres in total size and is located east of the City of Renton, King County, Washington. Onsite assessment of the project site following the procedures outlined in the Washington State Wetlands Identification and Delineation Manual (Wasl'l. Manual) and the Corps of Engineers Wetlands Delineation Manual (1987 Manual} resulted in the identification of one area (Wetland A) that exhibited hydric soils, wetland hydrology, and hydrophytic vegetation consistent with the established criteria of both the Wash. and 1987 Manuals. The preliminary Selected Action Plan of the Evendell project site included the creation of independent lots suitable for the development of single-family homesites consistent with the King County Comprehensive Plan. Buffer averaging was to be used along the western boundary of the onsite wetland as a part of this lot creation. Selected Action Plan The Selected Action Plan of the Evendell project site focuses on the creation of independent lots suitable for the development of single-family homesites consistent with the King County Comprehensive Plan (Attachment 1 - Preliminary Plat). An essential element of this process is the development of access roadways and utility corridors that meet both King County health and safety standards and the goal of avoidance and minimization of potential~;;,,.~ term or long-term adverse impacts to aquatic environments. · · ~11o,v;;UV~ID) wetlands, streams, fisheries, wildlife -mitigation and permitting solutions F~lE · ¥P.O. Box 1088, Puyallup, Washington 98371 01':T Q 1 200 Co !iS) ce 253-845-5119 fax253-841-1942 Evendell-1 · • U " 00062 WetfandNVildlife Report ADDENDUM JLo a Rt: o as · ...... ,u \,uUNT · Lr1ND US£ SERVICES • • A primary feature in the creation of these homesite lots will be the establishment of a protective buffer adjacent to the identified onsite wetland consistent with King County Sensitive Area codes. The creation of these homesite lots will not require placement of fill within identified wetland areas or reduction of the standard buffer width as previously proposed. Site development requires construction of road improvements within existing unopened SE 136th Street right-of-way 1;1long the northern project boundary. This will require the unavoidable filling of the northern 200 square feet of Wetland A and reduction of the associated buffer by 4,649 square feet. In addition, in response to King County staff concerns, the applicant has proposed constructing road frontage improvements along 160th Avenue SE consisting of a paved shoulder and relocation of the drainage ditch. This will require the unavoidable intrusion into 2,340 square feet of the buffer for Wetland A. As mitigation for the unavoidable loss of wetland and buffer associated with required road improvements, the wetland_buffer will be increased by the addition of 15,495 square feet of forested_area located in the northeast corner of the site between the eastern boundary of the wetland and 1601h Ave. SE. Provision of this additional buffer fully compensates for the unavoidable · intrusions into the wetland and standard buffer areas and will not adversely impact the remaining wetland area. ELEMENTS OF THE BUFFER ADDITION AND WETLAND RESTORATION PLAN 1. The buffers associated with the identified onsite wetland will be established to the King County standard 50-foot width. Identified onsite wetland and associated buffers will not be adversely.impacted by future onsite land uses. 2. As a part of the development of the required roadway improvements the actual encroachment into buffer area of Wetland A will be held to the minimum necessary to meet County roadway requirements. Following placement of the roadway improvements the roadway side slopes within the buffer areas will be revegetated by seeding with an appropriate seed mixture. 3. As compensation for unavoidable encroachment into the north end of Wetland A, 400 square feet (a 2 to 1 ratio) of degraded wetland in the proximity of the edge of the roadbed will be enhanced through the planting of native trees and shrubs. This restoration will enhan.ce wetland function by providing structural diversity in the plant community. 4. As compensation for unavoidable encroachment into the north end of the buffer associated with Wetland A and a portion of the buffer on the east side of Wetland A the standard buffer will be increased to encompass the entire northeast comer of the property. This buffer width increase will enhance Evendell-2 00062 WetlandM/ildlife Report ADDENDUM ' ... wetland function relative to that provided by standard buffers through increased visual and auditory blockage from 1601h Ave. SE and greater conservation of wildlife habitat opportunities. 5. In order to protect the wetland and associated buffer erosion control Best Management Practices will be implemented during all phases of construction. These measures include silt fencing along the buffer prior to any onsite actions. In addition, all exposed areas will be seeded with low growing grasses upon the completion of onsite actions. 6. All activities related to the establishment of the buffer areas will be monitored by the project biologist. WETLAND RESTORATION AND BUFFER ENLARGEMENT PLAN The GOAL of the identified buffer addition plan is to ensure that proposed site development actions (i.e. the upgrading of an existing right-of-way roadway to meet King County health and safety standards) do not create a short-term or long-term adverse impact to the onsite wetlands or. associated buffer areas. The total amount of King County jurisdictional wetland area to be unavoidably modified by this project equals 200 square feet. As compensation for this unavoidable impact to Wetland A, 400 square feet (a 2:1 ratio) of remaining degraded wetland will be restored through the planting of native trees and shrubs. The total amount of King County jurisdictional buffer area to be unavoidably modified by . this project equals 6,986 square feet. As compensation for this unavoidable impact to Wetland A, 15,495 square feet (a 2.2:1 ratio) of area at the northeastern corner of the project will be dedicated to buffer area. The purpose of the Wetland Restoration Plan is two fold. First, to define the wetland restoration plan proposed as an element of the construction of the Evendell development. Second, to identify the objectives and criteria whereby the success of the completed wetland and buffer restoration plan will be determined. Evendell-3 00062 WetlandNVildlife Report ADDENDUM ... To achieve the identified GOAL, the following OBJECTIVES are defined: .. Plant Community Structure A. The restored wetland will exhibit scrub/shrub and sapling vegetation classes within three years following initial planting. • Natural Biological Attributes B. The restored wetland will utilize native trees and shrubs which provide additional habitats for wildlife. This wetland area will provide nesting and cover habitat for passerine birds common to the area within three years. PERFORMANCE CRITERIA To establish whether the defined project OBJECTIVES have been met by the wetland restoration plan, the following PERFORMANCE CRITERIA have been established to apply to the restored wetland area. Objective A. The restored wetland will exhibit scrub/shrub and sapling vegetation classes within three years following initial planting. Performance Criteria: As defined by specific plant counts 100% of the trees and shrubs initially planted will_ be alive at the end of the first growing season. Performance Criteria: As defined by specific plant counts 80% of the trees and shrubs initially planted {cumulative count) will be alive at the end of the third growing season. Objective B. The restored wetland will utilize native trees and shrubs which provide additional habitats for wildlife. This area will provide nesting and cover habitat for passerine birds common to the area within three years. Performance Criteria: Use by passerine birds will be documented through observations and photographs of individual birds and direct habitat utilization. · VEGETATION · Selected Plant Communities The plant species selected for planting in the wetland and buffer areas will be obtained as nursery stock. The specific regional nursery will vary according to plant species and nursery availability. The selected species are native and Evendell ·4 00062 WetiandNVildllfe Report ADDENDUM commonly occur in the local area. The plant species prescribed were selected to increase plant diversity, match present onsite communities, and increase wildlife habitats. The plant locations will be nine feet on center for the trees and six feet on center for shrubs and will be adjusted in the field at the time of planting to ensure plant survival and to protect retained native species. QUANTIT COMMON NAME PROPOSED INDICATOR y SCIENTIFIC NAME SIZE STATUS 4 Western red cedar (THP) 6 -8 ft FAC Thuja p/icata 6 Western crabapple (PYF) 4 -6 fl FACW Pvrusfusca 8 Pacific ninebark (PHC) 2 gal FACW- Physocamus caoitatus 8 Red osier dogwood (COS) 2gal FACW- Camus stolonifera 8 Sitka willow (SAS) 2gal FACW Sa/ix sitchensis VEGETATION MAINTENANCE PLAN Maintenance of the restored wetland and buffer plant communities may be required to assure the long-term health and welfare of the wetland's environmental functions. However, this area is so small as to make maintenance and monitoring unwarranted. In lieu of maint~nance and monitoring, the 400 square foot area will be planted at double the normal planting density for trees and shrubs. This will provide for mortality of the planted vegetation while still meeting planting density objectives. Temporary irrigation will be established within the restored wetland area to ensure one-inch of water from June through September of the first year following installation of the plantings. FINANCIAL GUARANTEE Financial guarantee will be defined using the standard King County Sensitive Areas Bond Quantity Worksheet. King County will hold these guarantees. Should you have questions or comments regarding this addendum, please contact me. Mark Heckert Senior Wetland Ecologist Evendell-5 00062 Wettand/Wildllfe Report ADDENDUM