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HomeMy WebLinkAboutLUA-08-089_MiscKing County Department of Development and Environmental Services 900 Oak.csd..-de A1·t'nue S0uti1wes1 Renton,\\',\ 98055-1219 "'n,:.w ...... e . .-1.a..,.1:aa 1,,,...s...:;,,' ~-"'·~·~""' ,~ "'"''···· "'-~·, MEMORANDUM FROM: Site Investigator_ :8 EJ:H C..H ESH I ER. TO: Engineer M AJ:2'!( FQ1c-LHE}2. ( fD£t1J RE: Field Check Observations Date \ 2 ·1-7· 7 F"1£LD l ?-· 2~· 7 I. PROJECT NUMilER / NAME a'. w "' !: ::, 1; I: I Cl 1 . 0 \) 0 .w I"' I "' w 3. "' :t ::, z 1- u w AO =1..£P 00 3/ L\ BSNSQN HE 16 tlTS _J_~-"''2.,=--------~ Address/LocationltOIY \06I}I A'-IE;. SE(IO&>I Sf. \"lOTI-\ST Related Project#/ Name AQ-:J_ PF 00 2J_.,.,3,,__' ___________ _ Thomas Map Page (new) (o 5 Co j)_(p __ Thomas Guide Page (old) SYNOPSIS OF PROPOSAL SJBD1YLD£ 0,42B_8C!2ES DE Q-18 __WII2___5_ LoT-5_ _{~8< KND Y Sf Ll2TS) A:ND 0,3JJ __ Ad2.ES_ DE !2.~\B INID \ ~(E.'R\S1JIJ6)1P E:?E' 2-_LQ[S, __ l_J)V~JS LDT roJD 2. Sf \ ms WATER QuAUTY MSIC. L-H-DA_'=sc__ ___ _ f:I DW CONJJ?DL SIERRA FILE INFORMATION Parcel#(s) 2.92305C)0'2Co. qo28 S-T-R SE 29 ,1...3·0S Kroll Map {oQI E Acres/Feet2 _,39/,39 A~urrentZoning Q-\B I Community Plan 5005 CQ.EE}_,(_ Comprehensive Plan Uh J IJ m Limited Text Entry ___ _ PA GE / 4. SENSITIVE AREAS INFORMATION HAP FOLIO PAGE# SITECONTAINS SITE ABUTS YES NO YES NO COMMENTS •Wetlands ___ [1) D D B tt:ND SWALE !ill,'" ' Wetland# ____ Wetland Class ____ Drainage Basin-------- Sub Basin \?JLACI(. 12 I\./ 812 MS! N Critical Basin? W [El • Streams ________ o D D D Stream Class Stream Name • I 00-year Floodplain _0 JZJ ___ o 0 • Erosion Hazard __ 0 0 ___ 0 0 • Landslide Hazard _0 0_0 0 • Seismic Hazard ______ 0 lZ] __ [J IZl • Coal Mine Hazard ___ 0 12'.1 ---D IZl • Other known SA's _0 o_o [_] Class I or 2 Stream or Class I Wetland within one mile downstream of project site? _Y.,_E=,~<;'------ FEMA FIRM number _______________ In FEMA Floodplain? W liJ Soils Mapped ' G Map# 'N EB Best available Topographical Map __,6......,1~5.,______L,c-__._1 _..D<LA-'-CR,.__--'-------------- S. SITE DESCRIPTION MATCHES T.I.R. DESCRIPTION! THE 2. PA:i2.C8-S A Q E: . El'Ct:\ Cl.£ earn .:i , 39 ke.ES ek\-1. A :BL.A \JJ I LL kQ IVSI Il::tE LC5fS 'lb l}1 £ 'RZC'Pc:5 ED Ca:Jnf?Ve.ts'Dol\\. cue\28NILY' :TJ:::J~ N~~N LDT H-A'::> A Du W-8<. A:N D 6 'f2.Ps s S \JJ / LANC8Us:P I is.lb f\:t,,l D TI::\ £: soun+8eW l..DT l±As A ttousE Willi 0~5;/L.JWCHM?tN&j klvQ 3 ,'.::tlffi/ol'>[BvlLDl\)6S ~ fcl2-A-.J1Y1A\...,S. A cB '.i?1PE"s ELCUJS rGoM :11::\E" @st ( BP~ D12..,...,) wo lW 1)-±p; PAST :6?oM n-1£ Nc£-TH-(DVl?eJT'D VlA ('1 \035c:5) TI) TH-C co1:1,n,01v L,qJE: B~ 11-\-E: J. Pl's:0:::@'S N~ ::::n+~ PJ:>sSt S1 Q 'E . AT :Jl:\ E; Cl'.[\ ET cf :::D:::\ Is Pl PE I <S A 14:XP D,Ri-t /SvJA LB 'Pu.::u.) b) b IJ.lR>r ::::ID ~s l::'.l , o I '.f32ope0t:( :Po1bl1: K\)D A?PEZ,;;f;::,,lo 5'5"8P Jtsrb 6i£o..1t0D kC.R.fth '$02n-\ PNZc8L: '1D l?DlyC:Q) N2fili w "'Tl-\~ SCul-t L1we. ::D:tt::: 1?12oDE321Y 'JZ) Soi:r8 1s WY AND t-r .IWp@DZs I.-' 'l-@)< ::cttz..--r , 1 f'/1 & Es '.p( P2-D PAGE 1 6. EXISTING SITE FEATURES Un~apped Sensitive Areas: W E1V's}J Ds 'fb:5i5j BL£ 0\, ) 33(:rn-\ Pb2cEls Soils types seen and evidence of soil movement, slides, slumps, erosion, or deposition: ------ ND '.SOil.-MCVGM-<;;JJJ :50:BN. Ground Cover: ,6'2,A'.S'::,, ~kQ\2; WitffC W t;Jl,,, • J • Existing Utilities (hydrants, signs, poles, etc.) shown on site plan? '(E:5, t:Jb\..lSE tlJs:'S, /\}J Ml)rf)Ob) 6:1 )Q . Qa.K--W pf 51:tMIJ ' Wildlife and habitats: _ __,'--------------------------- Water Wells: NO~E, ~ Work started on sitel ¢ --~---------------------- CI o s e d depression >5000 foet21 [II yi'l Steep slopes/ [II ~ ------------ 7.· DRAINAGE Drainagecomplaintrecords SE£ ~ t:1lS-CCJAPL/IJtJIS ~/a; f"?Oy\ \.1./W'P \"'l. • 7.--, • ..., Proposal will add >5000ft' of new impervious surface? 00 [fil Approximate Area ______ _ Proposal will collect and concentrate surface and storm water runoff from an upland and site drainage area of over 5000 ft 21 Ir] [fil Approximate Area ______ _ ' Upland Drainage Basin (draining directly onto site): 51-bWf'lctstJC frv\oJ IT Dr \/\I k:r?:?--:fkru)S O\Jffi <Sm:::-:fgc:t'.} Nt !QJD E" On-site Drainage: Sul AL~ / CB L\Jf5 ~s srn:::-tb WJD:\ LA µ:E (C.U~Y A FWD) Downstream Drainage (minimum 1/4 mile distance): Srr:E fi_cu...)S 'Tb SD\j'f"t:\, bAC'(_/{NZD socn--\ O'F srn:;: !s5?0€NZ:FD Pe.'r'. (Pt PED?) . ::D::\12 WoPWclY l.dNS:-BB'h:il~Kl TI±~ ?A-ec£:L SQ.JG\- b? '.Slw fs}JD 'lli:tz ~ ·~S0JG\ -::NE ffi/BP6' g escription atches .I.R.1 --------------------- -Tl\?. 610lY f'sDC1ZfB% ~ QKfl-\ ~ Wl?-fil?JC PAGE 3 8. EXISTING ROAD NETWORK On'.site Roads ---------------------- Adjacent Roads " SE I ,OT!-\ ST A l..CLlb Nof:."TH S 1 De - Q~kC) l0J'.D '.Qa:51 BD 2.SM Pt\: -CYWVTl,Y 50-t Sf' LDTS l\rJD L-\ B \Jt-J 1T Wl.JCQ CloscstT1011SitStop" \QBTI::\ A\/E $\:: /\:LDNb \JJBST SI DE" 8. ESTIMATE OF PROJECT IMPACTS ON SOIL AND WATER 9. ADDITIONAL COMMENTS O A-@Ak l)QtJJ~J5!12E7W'.\ fr'rTtj Nor t1A:P0a>. l'rOOfiolJAL H i1 PI DB :fl?.c0 'E::7\:ST fLD,)J'f, l ITT SD A:1 .E -9D::l e;g 'Do.DWST'Q.,f?A tv'\ 91 P es ITf)j'v\ 8:It: 1-"1 /YY e'x l ST. "' '2-'El:t:NT woe..'L QfsJ 5LD/sL5" /'t;{?EA V()$'el,e -}:,JEJ,\) Q\IT '.Pl LE I NEVJ 6e.A-sS o N S&9 b:L-E Bf'Th_l'Ls, • :r:: I I s u /J Clcfkf-,., <A., H kC ELt::IJ,,)$ MAY COM~ Pl2oM 't,Jt)Q....Ttl: Ct>WODS C~ .1;:,; SCTJS: 1F &JJY-t:1tsi?S S1JnJ..J PIPB S:T(LL CQHt< i-"V-6M IJ\)OITt\-:, PAGE 4 10 CONSTRUCTION SIGNS WITHIN 500 FEET AND ADJACENT USE I I NUMBER OF PHOTOGRAPHS TAKEN PA GE 5 Numbei:: jAo7PP003 Status: jPENDING Date: 112/18/2007 Addr~: j17014108TH AVE SE APPLICANT: jLORANGER JAMES Status: Percent Complete: Job Title: Description: lsijort ~ · .:::•:J:':::ii: ,;;7•,:w,:r Parcel Number. I 292305;9028 : · ... ·.·.·· ·····., Ownei: ]LORANGER JONELLE Applicant: JLORANGERJAMES Lot Size: I 0 Legal: ,---------------------- Public Owned: r Related PreApplicalions: Permits Based on this PreApplication: ,-------------- Wednesday, Dec 19, 2007 09:50 AM Back§top r Applied: I, 2/18/2007 First Meeting. LI_/_ Second Meeting. LI_/_ Fi IA . J§s,•,•:, " • na clion: J;;....;!';;.!:::,;;::3..;; Cred~Ekpi!es: LI_/_ Enteied by. ll:l!JNNaL~b Date Entered: ll~1QZ2001~WW Valklated by. 1 ss ue d by: ...----- Division Lead: ,....---- DepoH Amt: jii;::; · u:$382:20 Number.: !A07PP004 Status: )PENDING Date: j,2118/2007 "·'""'L .. s."'"'•J,;,"·"'·' A<ldreff: 1,oso1 SE 170TH ST KC APPLICANT: !DEFRANCESCO LEONARD ' ---~~ ''" Base Screen Preapps .--l':::'J~ Status: l"':jij~:jjl~i~l~lti~--=i:J::.. ______ ..:_P_:e:rc:en:t.:Complete:::.=::..:_ l'rtOJii ,::,:::,:< J! Jll>d•• j l•f E,!11:ls.cl<I Job Hie: Desciiption: Parcel Number: IR~ijali~l.·plai:; ·····•·,,:,,,::'!:iii:::, J292305,9026 Site Address: ll0B0tSEJ70TH5T KC. ,.,·' Ownei: JCARPENEDO 1,18f1C:I,\/ Applicant !DEFRANCESCO LEONARD' i Lot Size: I 0 leg al: .---------------------- Public Owned: r Related PreApplicaliom: Permits Based on this PteAppication: ..------------- Wednesday, Dec 19, 2007 09:51 AM Applied; 11 2/18/2007 First Meeting: C1 _1 _ Second Meeti,g: J_/_/_ Final Action: Lz :1,£.·u,::.:M,r: Credit El(l)ires: Lt_/_ Entered by. [13!.JNNELLM,''''':: Date Entered: fa2~18/2007,F' Validated by. Issued by: .------ Division lead: ...----- DepcmAmt 1:..:r :_t~20 ti Kin9County ODES Parcel Information Report This report was generated: 10/12/2007 1:17:35 PM Parcel Number: 2923059028 Base Info Parcel Number: 2923059028 Tax Payer: LORANGER JONELLE Property Name: N/A Annexation: Benson Hill (Pending) Jurisdiction: King County Situs Address: 17014 108TH AVE SE Zip Code: 98055 Postal City ~; Reference Info Plat Name: N/A Plat Recording Date: N/A Plat Lot: N/A Plat Block: N/A Kroll Page: 601 Thomas Brothers Page: 656 1/4-S·T·R: SE-29-23-5 Lot Area: 16,960 SqFt. (0.39 Acres) ·-Planning Info Zoning: R-18 Comprehensive Land Use: uh, um Assessor's Open Space: N/A Commercial Use: N/A Nuntber of Units: N/A The information Included In this report has been compiled by King County staff from a variety of sources and is subject to change without notice. King County makes no representations er warranties, express or implied, as to the accuracy, completeness, timeliness, or rights to the use of such information. King County shall not be liable for any general, special, 1nd1rect, 1nc1dental, or consequential damages Including, but not limited to, lost revenues or lost profits resulting from the use or misuse of the inforrr,ation contained in this report. Any sale of this report or information on this report is prohibited except by written permission of King County. Appraised Land Value: 2005 -$124,000, 2006 -$124,000 Appraised Improvements Value: 2005 -$13,000, 2006 -$13,000 -:: Administrative District Info Community Plan Area: Soos Creek Unincorporated Area Council: N/A School District: Renton School District 403 (403) Fire District: King County Fire Protection District No. 40 (40) Roads MPS zone: 334 ($1,775) Roads Transportation Concunency Mitigation Zorn,· 784 Waterfront: No Water System: WATER DISTRICT Water Service Planning Area: N/A Sewer System; PRIVATE Airport Noise Remedy Program: N/A Coundl District: 5 Julia Patterson Drainage Basin: Black River: WRIA 9 Police Jurisdiction: King County Police Precinct: 3 Police District: F3 Snowload Zone; Standard Agricultural Production District: N Forest Production District: N Page 1 of 2 Rural Forest Focus Area: N Transfer Development Rights Type: N/A Transfer Development Rights Status: N/A Transfer Development Rights Permit Numbr,: N/A :-:J Inspection Area Info Building Inspection Area: S-6 Clearing Inspection Area: Richelle Rose Code Enforcement Inspection Area: Bill Turner ESA Inspection Area: Kathy Newborn Grading Inspection Area: Ramon Locsin Land Use Inspection Area: Mike Meins :~1 Sensitive/Critical Area Info Sensitive Areas Notice( s) on Title: None Sensitive Historic Site: None Bald Eagle Data: Bald Eagle Flag: N/A Aquatic Areas Buffer: N Basin Condition: Low Flow Control Area: N/ A Water Quality: N/A Critical Aquifer Recharge Area: None Area of Potential Wetland Influence: N Shoreline Management Master Program Desiqr.ntion: None Page 2 of 2 tQ King County a:mmrllll lllEmal lli40i34W Comm~nts Wi¥ii4,M By law this information may not be used for commercial purposes. Assessor Real Property Records: Taxpayer Tax Year ,~~n . ".lllllllillllll·!l--'".lii.' '·'ll!JWllF. LORANGER JONELLE f~!ilel Number !I illOOilmiliJ. ffiffil!all~•r Account Number 292305902804 2007 Levy Code 4250 Taxable Value Reason $124,000 Taxable Land Value NONE OR UNKNOWN $124,000 Tax Status TAXABLE Appraised Land Value Appraised Improvement Value $13,000 Taxable Improvement Value $13,000 Taxpayer J!ilijfti;el Number LORANGER JONELLE Account Number Tax Year 2008 Levy Code Taxable Value Reason $140,000 Taxable Land Value 292305902804 4250 NONE OR UNKNOWN $140,000 Tax Status TAXABLE Appraised Land Value Appraised Improvement Value $13,000 Taxable Improvement Value $13,000 Assessor Property Sales Records: Tip: Use the Recorders Office: Excise T.ax Affidavits Report to see more sales records details Sale Date Seller Name Buyer Name 9/23/1986 Sale Price $39,000 HAMER SHIRLEY E LORANGER JAMES H+JONELLE L Assessor Parcel Records: District Name KING COUNTY Property Name Property RESIDENTIAL Type Plat Name Present Single Family Use (C/1 Zone) Plat Block Water WATER System DISTRICT Plat Lot Sewer PRIVATE System Lot Area 16,960 Sqft (0.39 acres) Access PUBLIC Section/Township/Range SE 29 23 5 Street PAVED Surface Assessor Legal Description Records: Page I of3 Legal Description N 80 FT OF S 1891 FT OF E 224 FT OF W 254 FT OF SE 1/4 LESS ST Assessor Residential Building Records: Address 17014108TH AVE SE 98055 Building Grade Fair Bujlding Condition Good Bedrooms 1 Year Built 1925 Baths 1 Year Renovated 0 1/2 Baths 0 Total Living SqFt 620 3/4 Baths 0 1st Floor Sq Ft 620 Stories 1 Half Floor Sq Ft 0 Single Story Fireplace 0 2nd Floor SqFt 0 Multi Story Fireplace 0 Upper Floor SqFt 0 Free Standing 0 Fireplace Total Basement SqFt 0 Basement Garage SqFt 0 Total Finished Basement 0 Attached Garage SqFt 0 SqFt Finished Basement Grade NONE OR Open Porch SqFt 40 UNKNOWN Daylight Basement Enclosed Porch SqFt 0 Heat System Forced Air Deck SqFt 0 Heat Source Oil Percent Brick Stone 0 This report was generated: 10/12/2007 1 :18:52 PM Related on-line reports: King_County GlS: PrOp!!J"lY inform,1_tion FAQ King County_.t,ssessor: Submit a request to correct this infgrmation DDE;,;J>_ermit-1!.J111.li!;ations Rep_od King _(;Qy.o.!y_:_Disttlc_ts and Dev11lopmenLC::onditions Report King County Assessor: eReal F'T.QJJeffi'B<,port (PDF format requires Acro!:>_<lt) King County Asses_~c,r::...Qua_rl!!LSJ!.ctjon Map Report (PDF format reguires l\_crobat) King County Treasury Operations: Pro11erty Tax lnformatig_n REl.COrders Qffic.<,: Excise Tax Affidavits_Report Recorde,rs Office: Scanned images of plats, surveys, and_other map documents Enter a 10 digit Parcel Number: or Enter an address: [ Search [ l<;ing_C._9_y_r1_ty I GIS Center I N_ews I Services I Comment$ I Search Page 2 of 3 ~ King County ODES Parcel Information Report This report was generated: 10/12/2007 1:19:34 PM Parcel Number: 2923059026 -~ Base Info Parcel Number: 2923059026 Tax Payer: CRUZ ARIEL A+DIFRANCESCO LE Property Name: N/A Annexation: Benson Hill (Pending) Jurisdiction: King County Situs Address: 10801 SE 170TH ST Zip Code: 98055 Postal City -Reference Info Plat Name: N/A Plat Recording Date: N/A Plat Lot: N/ A Plat Block: N/ A Kroll Page: 601 Thomas Brothers Page: 656 1/4-S-T-R: SE-29-23-5 lot Area: 17,172 SqFt. (0.39 Acres) ::1 Planning Info Zoning: R-18 Comprehensive Land Use: uh, um Assessor's Open Space: N/A Commercial Use: N/A Number of Units; N/A The information included 1n this report has been compiled by King County staff from a variety of sources and is subject to change without notice. K,ng County makes no representations or warranties, express or implied, as to the accuracy, completeness, timeliness, or rights to the use of such 1nformat1a~. King County shall not be liable for any general, special, 1nd1rect, incidental, or consequent1c1I damages including, but not limited to, last revenues or lost profits resulting from the use or misuse of the information contained in this report. Any sale of this report or information on this report is prohibited except by written permission of King County. Appraised land Value: 2005 -$124,000, 2006 -$124,000 Appraised Improvements Value: 2005 -$157,000, 2006 -$157,000 ·...:: Administrative District Info Community Plan Area: Soos Creek Unincorporated Area Council: N/A School District: Renton School District 403 (403) Fire District: King County Fire Protection District No. 40 (40) Roads MPS zone: 334 ($1,775) Roads Transportation Concurrency Mitigation : 784 Waterfront: No Water System: WATER DISTRICT Water Service Planning Area: N/A Sewer System: PRIVATE Airport Noise Remedy Program: N/A Council District: S Julia Patterson Drainage Basin; Black River: WRIA 9 Police Jurisdiction: King County Police Precinct: 3 Police District: F3 Snowload Zone: Standard Agricultural Pi-oduction District: N Forest Production District: N Page 1 of 2 Rural Forest Focus Area: N Transfer Development Rights Type: N/A Transfer Development Rights Status: N/A Transfer Development Rights Permit Numbe:: N/A _::J Inspection Area Info Building Inspection Area: S-6 Clearing Inspection Area: Richelle Rose Code Enforcement Inspection Area: Bill Turner ESA Inspection Area: Kathy Newborn Grading Inspection Area: Ramon Locsin Land Use Inspection Area: Mike Meins Sensitive/Critical Area Info Sensitive Areas Notice(s) on Title: None Sensitive Historic Site: None Bald Eagle Data: Bald Eagle Flag: N/A Aquatic Areas Buffer: N Basin Condition: Low Flow Control Area: N/A Water Quality: N/A Critical Aquifer Recharge Area: None Area of Potential Wetland Influence: N Shoreline Management Master Program D-e~\,;; i/i\;c_,,,· None Page 2 of 2 Comments Mi¥114,M By law this information may not be used for commercial purposes. Assessor Real Properfy Records: Taxpayer Tax Year Tax Status CRUZ ARIEL A+DIFRANCESCO LE \.ti9el Number ~[~z(fil!!lllli9:~Hlllll!lml Account Number 292305902606 2007 Levy Code 4250 TAXABLE Taxable Value Reason NONE OR UNKNOWN Appraised Land Value Appraised Improvement Value $124,000 Taxable Land Value $124,000 $157,000 Taxable Improvement Value $157,000 Taxpayer Tax Year CRUZ ARIEL :fl~~<ol Number A+DIFRANCESCO LE Account Number 2008 Levy Code Taxable Value Reason $140,000 Taxable Land Value 292305902606 4250 NONE OR UNKNOWN $140,000 Tax Status TAXABLE Appraised Land Value Appraised Improvement Value $190,000 Taxable Improvement Value $190,000 Assessor Property Sales Records: Tip: Use the Recorders Office: Eiccise Tax Afflc!avi1,. ReRQrt to see more sales records details Sale Date 5/21/2007 Sale Price $435,000 Seller Name Buyer Name Sale Date Seller Name Buyer Name Sale Date Seller Name Buyer Name Sale Date Seller Name Buyer Name District Name Property Name MAEHREN MARCIA L CRUZ ARIEL A+DIFRANCESCO LEONARD C 5/20/2005 Sale Price MAEHREN MARCIA L MAEHREN MARCIA 2002 TRUST THE 2/1/2002 CARPENEDO MARCIA L MAEHREN MARCIA L 6/23/1992 Sale Price Sale Price CARPENEDO JULIUS A+MARCIA L CARPENEDO JULIUS A+MARCIA L Assessor Parcel Records: KING COUNTY $0 $0 $0 Property RESIDENTIAL Type Page I of3 Plat Name Present Duplex Use Plat Block Water WATER System DISTRICT Plat Lot Sewer PRIVATE System Lot Area 17,172 Sq Ft (0.39 acres) Access PUBLIC Section/Township/Range SE 29 23 5 Street GRAVEL Surface Assessor Legal Description Records: Legal Description W 254 FT OF N 81 FT OF S 1972 FT OF SE 1/4 LESS CO RD Assessor Residential Building Records: Address 10801 SE 170TH ST 98055 Building Grade Average Building Condition Average Bedrooms 4 Year Built 1981 Baths 2 Year Renovated 0 1/2 Baths 0 Total Living SqFt 2480 3/4 Baths 0 1st Floor Sq Ft 1180 Stories 2 Half Floor SqFt 0 Single Story Fireplace 0 2nd Floor Sq Ft 1300 Multi Story Fireplace 0 Upper Floor SqFt 0 Free Standing 2 Fireplace Total Basement SqFt 0 Basement Garage SqFt 0 Total Finished Basement 0 Attached Garage SqFt 640 SqFt Finished Basement Grade NONE OR Open Porch SqFt 0 UNKNOWN Daylight Basement Enclosed Porch SqFt 0 Heat System Forced Air Deck SqFt 0 Heat Source Electricity Percent Brick Stone 0 This report was generated: 10/12/2007 1 :20:38 PM Related on-line reports: King_c:;g_~nty GI$: l'rnJ!erly information FAQ King CountyAssessor: Submi.!_<!_reguesUo correct this information DQES: Permit Am>lications ReRQI! King County: _Districts and Development Conditions Report King County Assessor: eReal l'ro11erty Report (PDF format requires Acrobat) !Sing County Assessor: Quarter Section Map Report (PDF format reqgjr"s Acrobat) King County TreaSLJ!LOperatioQs: Prnperty Tax Information Page 2 of 3 ® KING COUNTY DEPARTMENT ot ASSESSMENTS / { =· r--~- 1' I ,. ·I, : li,-~}:C-J • il -· . /r f ! ...... ,,=",#, i f ...... .,, '"'' i , .. , ..... ,j "'-.,...-r--'-"--1~---'-··1 i i ) ·-·1 i i i i i ! I i I i i ! I -... I f . . . . c..j I I SE 29-23-05 '·•'•"""°"-. ,co1 '"""'·""'" h., LJ --·--1 I ·---------------------------- ~----,----- 16860 Si 0317 200 150 15 0 112 6 0 SF 0315 10 0 19 21 Q 9 C 0311 SF = - "' ~ ' ~ --------10 8 .. I ___. I w ~I i--:: CJ) . u, w CJ) I 141 11 :c; "4" 524J/ :CS :°" -, ,'\~ 03()3 R0 25 p; ; , \":i ~ 6J 39.2) ...I_:,;:;~ ~ND<JNl ~12662# 0301 0302 f::::;;;; I TR A 0303 0305 ;-;,: = ;'; ..--,1=.,......, I /04 ""' 53 R0 25l\ ~;;".:°; D s-,-39 21 -' < 1 014 :cs ''1'' · I := 111058# ~ _·56138 c:, 1 1 ~ I 0301 03051:l : ,-----_B! -_ _:_1 42 -~ ;': ~ N ~,- ~ ·;:::1 ~ = -· , 20 ' ' ' ~ ' = ' ;;; ~ ' z I = V, ' = 0 ' N = I ' = ' = I -' ' ' ., ' I - ' = ' ' ~ N ' --:-~ ' ' ~~ ' ~ ' I ' ' -I ~ ' ' 0, I 0, I ' N ' = I 5 0' -- ~ ~ ;;; >"" I ~ ,~ - / '\"s'\ i I 19200 Sf 0300 I ,-= I 00 0 ~ =~ = ~ 20000 Sf ""' ~ 0298 V, nee ~ I = = 24180 SF = = 0295 1 "- 18000 SF = 0296 = = ~ 11 a 9 o Sf ;'? 0291 = ;c, = - ~ ;:; I !/ o,I w (/) I I I I I I I 42 = = = # = ' = -= + = ~ ':° u~ = = LO~ d ' -z ~ = ~ ~ ~ -= >-::: $ I -~ + w ::: ~ -= ::: w ~ i!: 00 ~ I i--::1 ~~ 0 ~ -= = - --------,;cy--c y "' :;;;'>·, 2 9110 SF = 9038 l 5 71 11 355 4qw> --iit98 --s 89 J 4 -as w N = = ~ I 60 ,", 115 V ::; 90 = GLEN CONDO HERON = 4054 0300 -,-:; ... 11Hi77-/fJ ~, 6 0. 6 0 ~ ;,_, 121'98-101 = N ~ .31 = = ; J.685 = 62,W10 ~ ' N 89-52-07 [ 6 9 J 56 SF ·-= $R:'.0', 931110111,~ JJ4.92 0010-0480 18-65 ~~·, .: ---N [ 335.29 , . ..., -8[-~2-07 --------::. -::-··~ s 89 52 07 112 -.'':' . ' " \ 2 fl 5 ) • U G Renton \' 285 2 DD O 0 9168 [ 720,)J lpj 55 ;;; 1717 2 Sf 9026 -- 16 960 Sf 9028 95 2 2410 9052 , 1 8 s ~ r 63 67 ~ = 72.G.J Sf 91iB ~ 4 o-. . = -10 6 8 7 SF , 11895 sr I 0 9147 9144 JJ ,? 57 IO 0 SF = ~ - )819 J SF 9031 I - ~:i I-------"-------- - DRAINAG~ RELEASE COVENANi ,., This agreement mo.de this ~/~-day of --.4<~','C('.l!_.-'1~_. -----· 19:J.,i_, {; Mr, & Mr~. Julius Carpencdo hereinafter ca I I ed the GRANTOR, nnd KING COUNTY, a pollt/cal subdlVlston of the State of Wash I ngton, here I naf ter ca I ! ed the GRANTEI:'., and whereas GRAN'rOR represents and warrants that It Is the owner In fee of that certain parcel of land, descr I bed as fo I l OW!J: Lo-f BLoc...k eotl£ ~-, cc. T""f R.C!. a.1...,:,i3:: () s 9 o:J..& 4,).s-0 :). '1 ;.;. ;l o.S- w ;J-5'-} ;::-;-of' W fl/ F-f 0 F-' s 191:J.-r-t of'.= s fi.. 1/:f L.£,'i? Clo @.D ., and whereas the GRANTEE Is presently reviewing a drainage plan for a proposed Sjnglc l'nmtly SHbdjvi3jonPermlt for the project known as ___ M"'E ... A...,D ... 0 ... 1.,./ ,-.,aG.,.L_,,E=N~-------------, perm I t no . a pp 1 i c d for on lands located at 10850 SF. 170th Street, Rento11, WA 98055 and whereas said plan proposes to divert from their natural course of flow certal n surface and storm waters so as to cause them to flow (onto} ~away~·"from) the lands of GRANTOA, now, therefore, In consideration of the approval of GRANTEg of diversion In satd plan and other valuable consideration, receipt of which Js hereby acknowledged, the GRANTOR hereby agrees a~d consents to the diver- sion of surface and storm waters (onto) (~W,!IY-=f~§) Its lands and to hold GRANTEE narmlcss for any damage that may be caused by such diversion of flow nnd t1,1s conveyance shall be a covenant running ·w I th the I and and sha I I be b J n<:l Ing upon GRANTOR and I ts he I rs, successors and assigns forever. 1 of 2 1/90 </ IN WITNE'.SS THEREOF, the pnrtle$ hereto have hereunto set their hands: ( . '.. .. ,, ,•' ,,:,.· .' . /,'.".,,. ,.~ '):. (_ ~-,4.t.£,., ..... r:-l<o;< ·' GRANTOR . ·' STATE OF WASHINGiON) COUNTY OF KING )ss on this dny personally appeared before me: Julius A Carpenedo & Marcia;Cnrpenedo ~~~~~~~~~~~~~~~~~~~~~~~~~~~~-' to me known to be the lndlvldunl(s) described In nnd who executed the Within and foregoing Instrument and acknowledged that they signed the snme ns the Ir free and vo I untary act and deed, for the uses and pUrpoe::t!s ., therein ntnted. Given under my hand and offlclnl seal this ~~-J~n_n_i,_n_r_y~~~~~~~-• 19_::_. NOiARY PUSL. l C In and''for \.t.n: S of Washington, residing nt Hedding CA ! 2 Of 2 d11y of • DRAINAGE RELEASE COVENANT '(l This agreement made this 2 James & Janelle Loranger day of _...._f.e..b_;:_r-_·~__Jf----t 1 911 'Z-I herel~er cal Jed the GRANTOR, and KING COUNTY, a pol It/cal subdivision of the State of Wash I ngton, here I na,f ter ca I I ed the GRANTEE, ll.nd whereas GRANTOR represents and warrants that It Is the owner In fee of that certain parcel of land, described as fol lows: -SU,-1..4 -1-3 -o<" 0 f . e. 1,,1.// ff ., TM Loi :ti: qo U' 0P lU i.rl FT N ;o If T e fi' S or <::e ftf ?Gs~ {8:11 rT rr- and whereas the GRANTEE Is presently reviewing a drainage plan for a proposed Si11gla Pumily Sul,dlvlHlnnpermlt for the project known as MEADOW GLEN , perm It no. applied for ------'-.=.:;:.:;;..::...c.......::c;:;.:;:.:;..._ ___________ _ on lands located at 10850 SE 170th Street, Rancon, WA 98055 and whereas said plan proposes to divert from their natural course of flow certain surface and storm waters so as to cause them to flow (onto) (~ the lands of GRANTOR, now, therefore, In consideration of the approval of GRANTEE of diversion ln said plan and. other valuable consideration, receipt of which rs hereby acknowledged, the GRANTOR hereby agrees and consents to the diver- sion o; surface and storm waters (onto) G;'a-~~ Its lands and to hold GRANiE:E harmless for any damage.that may be cnused by such d Ivers I on of f I ow and th Is conveyance sha I I be 11 covenant runn Ing with the rand and shal I be binding upon GRANTOR o.nd Its heirs. successors and assigns forever. l of 2 1/90 5/ • IN Wt TNESS THEREOF, the part I es hereto have hereunto set the Ir hands: STATE OF WASHINGTON) COUNTY OF KING )55 to me k.nown to the w I th In and foregoing Instrument and acknowledged that they signed the same as the Ir free and vo I u~_tary t1ct and deed, for the u:::es and purposes therein :!lto.ted, Given under my hand and official seal this / 2 of 2 • ·~ DRAINAGE RELEASE COVENANT This agreement made this Rick & Sydney Niemi day of _4~·~=· ~'---· 19~, herelno.fter cal led the GRANTOR, 11nd !<ING COUNTY, a DOl!t!cal subdivision of the State of Wash I ngton, here I na-fter ca I I ed the GRANTEE, nnd wherens GRANTOR represents and warrants tl1at It Is the owner In fee of that certain parcel of land, described as follows: 170?2 108th Street SF Uouton, NA 9605S ___ snz -'.2.~ ~ z.s ... ~,:,..S:_..wT~=_,Le~r_-Jf:-_'---'q"""o.,.,.s-:z_.-= __ N...._..__,_1:.....t·.;;..t"__,_f....:..7_o_,_f __ _ /51 Pr 19P LU 31{ fT of {\I '{,.. ef SW YI/ Of' and whereas the GRANTEE Is presently reviewing a drainage plan for a proposed S1JJl.r)e Earoi.l~ Si,bd·fvi~ionPermlt for the project l<nown as _______ M_E_A_ll_O..._W_..cG..;;L"'E°'N __________ , perm I t no. applied for on lands lodnted at 10817 SE 170th Stroot Renton WA 98055 and whereas said plan proposes to divert from their natural course of f I ow cer ta l n $Ur face and storm waters so as to cause them to flow (onto) ~ fr~ the lands of GRANTOR, now, therefore, In consideration of the approval of GRANTEE of diversion In said plan and other valuable consideration, receipt of which Is hereby acknowledged, the GRANTOR hereby agrees and consents to the diver- sion Of surface and storm waters (onto) ~ay fr~ Its lands and to hold GRANTEE harmless for any damo.ge that mny be caused by such d Ivers I on of f I ow and th I'.' conveyance sha I I be a covenant runn Ing ·with the lnnd and shal I be binding upon GRANTOR and Its heirs, successors and assigns forever. 1 of 2 1/90 IN WITNESS THEREOF, the parties hereto have hereunto set their hands: STATE OF WASHINGTON) COUNTY OF KING )53 On this day personally appeared before me: ....,_K.,_,_;L::::..,!:J,1 't~· .... e-.... J"--,:;,,,IC:..:.__,S::::' _.,_'1.,.d.=.:A-::.,;cc:.<!c..",~'--s=---<A.r.1_..,-.,.e-::..Lhz-"l._t.../ ·------· to me k no_wn to _..) ~e the Ind!Vlctual(s) described In and who executed the within and . foregoing Instrument and acknowledged that they signed the same as I the Ir free and vo I untary act; ·and deed, for the uses and purposes ·' therein ste.ted. Given under my hand and official seal this day of ..... ,. . -... ·: .... . . ' . :.~?::::.:.>..' '•r •• ,,..,.,,•·' 1 9 '/ "I..: NOTl'\YPUBLIC In and for the ~ate of Washington, residing at ~~~ 2 of 2 • DRAlNAGg R~LEASE COVENANT This agreement mnde this Mr. & Mrs. RoberL Lyon day of _.._t:1..:.:.A....:.:2.C=-1-.;...I ____ , 1 s.2_, hereinafter ca I I ed the GRANTOR, nnd KING COUNTY, a polltlcnl subdivision of the State of Wash I ngton, here I na.fter en I I ed tl1e GRANTEE, and whereas GRANTOR represents and warrants that It Is the owner In fco of that cortnln parcel of land, described as follows: 10817 SE 170th Street, HenLon WA 98055 {1P I fl @ f \61 :389 of s or Less . ' and whereas the GRANTEE Is presently reviewing a drainage plan for a prooosed SINGLE FAMILY SUBDIVISIONpcrmlt for the proJect known as -~~---~M~E~A~D~O~WL...lGu,I~,f~'.~N ___________ , permit no. applied foe on lands located at 1Q8'JO SE 170th Srreer, Keo ton, IH 98055 and whereas said plan proposes to divert from their nntural course of flow certain surface and storm WD.ters so as to cause them to flow (onto) E{ay fro0 the lands of GRANTOR, now, therefore, fr, consideration of the approval of GRANTEE of diversion In said plan and other valuable consideration, receipt of Which ~s nereby acknowledged, the GRANTOR hereby agrees aQd consents to the diver- sion of surface and storm waters (onto)§ fr~ Its lands and to hold GRANTEE harmless for any damage_ that mny be caused by such diversion of flow and this conveyance shall be a covenant running ·wlth the lnnd and shal I be binding upon GRANTOR and Its heirs, successors and assigns forever. 1 M 2 1/90 • l N WITNESS THEREOF. the part I es hereto have hereunto set the Ir hands: STATE OF WASHINQTON) COUNTY OF KING )ss On this day personal Jy appeared before me: .,_1.<eJ.11 o..11d~e0--...:::C..:-'-1 ... 9J-l,0LJ./\.o..1.r__.J...ec..,,,1i"-l11'"'""J_~P'D ... .]>..L,J..lhl,..,ifw±....;B1,4,..... ,_l ...... 11,l ..... c_,_2 ...... AJ,,,__. to me l< no~m to be the lndlvldual(s) described In and who executed the within nnd forecolng Instrument and acknowledged that they signed the same as the Ir free rrnd vo I untary act nnd deed, for the uses and purposes ., therein stated. Given under my hand and official seal this \ (? i-1--ctay of 19(t;.).. NOTARY PUBL C In ad for the State ~rya~h~~t.M rt;s~lng at , .40@~"f:-~ -L-t..J fr _, __ _ .a . ,; ----------~-..,....,._, ___ _ -----------"--'---'-·--- 2 of 2 ·. ··.-:_ .. · ·.··,· .~ .. · ... , .. . . . :.:· . ,I . ' a u t!l :z ;;2 656 t8 B Cl) ~ 1 2 6 s ST ST w 3RD T w TH 7 T ST iE.' :c ~~ S!ii 132ND ST p i ~0-,,:1 s 4 ;< -s I t ~, > < al; c::, PL ~ T UILJUN o GAR(.l(IIDJN ::: SE.A.TTLf-RDITO/f • SW 19TH ST FS SW 23RD ST ! ST 1 27TH I RfffTON WETLANDS 1 §W ,SW 30TH ST I SW 33RD ST > < SIi 38111 -ST ':ti SW 4TH I 8 RENTON o "1: :z -WfTlAHOS --' .125 SW 3JH ST ,~J- i -<Y 41ST I -l-o .25 .375 29TH ST w ST 3 m1les I i n . -1900 ft . SEE 626 MAP ~ N z: 6TH ST 'i (lOl,.flRTV(fl :z ,; Tll</l > :z: % "" :z 5TH ST > > 8 ::,,. <t <t ~ <t "' 0 ~ o z -I > < • J' PANTHER CREEK .I v, {.."; %r1-1 Sr 20 :,i t; r, .i:(' @ , 8 HWNT ~l' h GATE,s: SE./''<' "' st 5- :i: n ~ ~ .. r, i ~ ! (J' C'\J ~ r-+------,~o '., ...l~ ~~1--J.;f "'' v ~I i=i "'' t,/ w .! ii'!';E i!: j:!'7'lH PL :::, :!. SE -171ffiL G Pl USDA "fiiii Soil Map-King County Area , Was hing to n 560440 560480 N A Meters 0 30 60 120 180 ------======-----------ic::==========:::iFeet 0 100 200 400 600 Natural Resources Conservation Service Web Soil Survey 2 .0 Nati onal Cooperative Soil Survey 12/19/20 07 Page 1 of 3 New Annexation City: Renton Proposed Annex ation N ame: Benson Hill Department of Development and Environmental Services Boundary Review Board File 2256. The proposed Benson HIii annexation Is approximately 2,438 acres, and Is located on the eastem edge of Renton. It Is generally bordered on the North by Renton. The northe rnmost boundary generally follows SE 19th ST. It is borded, as well, on the west by Renton. This boundary Is serpenti ne, primarily following 104th AVE SE and extending, at some locations, to 92nd AVES. A portion of the southern boundary (S 200th ST) borders on the City of Kent. The remainder of It -the easternmost boundary of which Is located at 135th PL SE -borders Unincorporated K ing County. The assessed value of the proposed annexation Is $1 .2 billion. c:J Proposed Annexation I Parcels D Incorporated Areas N + 0.5 025 0 ,..;..,.1.l,artmapa\20010814 8 -aonMoli_~N~_.,nG intd MCCOMMP\\Od.-70r..--m~\20010S\mcooll"C>sp_20070&1•_0.,,.o11ft11_A:H_1PtOP ..... p,of 0.5 M ile s Tt-e information included on this map has been compled by Kirl{l Courty staff from a variety of sou-c,,s and is subjeel to change "Mthout notice. King County makes no rel)"esentations 0< oorranties. e,q:ress °' "'1)1ied, as to accuracy, oorrpleteness. timeliness, « rigl'ls to the use of such int«mation. Ttis doo.Jment is not intended fcx use as a si.rvey proruct. King County shall not be tiable for any genera, special, inclred, incidental, « ooosequential damages including, M not lirnlted to, losl reva,ues 0< loS1 profits resulting from the use « misuse of the infO<matioo cmtained on this map. Atty sale cl lllis map or infcrmation on this map is pl'Ohil:ited except by 'Mitten pennission of King County A07PF002/3 DRNG CMPLTS Bald Eagle Nests (WDFW) , ',, Wildl ife Net'NOrk CJ Basins N stroots CZ] SAO Landslido EBB SAO Coal Mine i;;:s SAO Seismic E:I SAO Erosion ~~!roam ·A T~2P ~2S /y'3 u ~ SAO WeUand (1998) Water Boches D W LRD Drainage Complaints [1 Parcels i Bald E:~~·F:t and Roost Buff9($ (WDFW) 800 Foot or Shoreline 1320 Foot FEMA Cross Sections FEMA Floodway [TI FEMA 100-yr. Floodplain c::::JCitios 1·= 500foot 400 Foot UI Ka,g County The lnformaOon ncluded on 1his ITl8'> hal bMn compiled by King County &taff from a v&fiety c:J IKIUl'OH and ls aut,f«:t 10 ehMge witholi. ~. ~ng Col.w\ty makes no reprewntatlons Of watrMti&s, express or lmplled, u to the accuracy, c:onl)letonoss, tlmellness, or rtgntl to the us.e of such lntonnatlon. King Col.rlty shaiJ not be lable 10f any genem, special. ndirect. incidental .« consequential damage,1 lnducl'ng, bli not llmtted 'Oo, lost revenue.a« lost pn,ftts real.ffing from the us.e « mlwH of the Information oontained on this map. /vry sale of this map or klfonnatlon on this map Is prohbi'led ucept by written permission of KJng County. Plot date: Oct 12, 2007; l \ddes001\x01'qis\av_dev\projoctslbase2.apr A07PF002~ HYDRrnGEO Bald Eagle Nests Cl'/DFW) , ' , Wildlife Network c:J Basins N Streets 0 SAO Landslide EBB SAO Coal Mino i;;::9 SAO Seismic E:I SAO Erosion &~tream •A "'1 2p ~2S /'v 3 u Water Bodies D WLRD Dra,nago Cornptamts '--' Parcels i Bald E:tctF~~ and Roost Buffe,s Cl'/DFW) 800 Foot 0< Shoreline 1320 Foot FEMA Cross Sections FEMA Floodway [J] FEMA 100-yr. Floodplain c::J Cities 500 1000 1500 Feet 1"• 1333 feet ~ King County The nformauon incfuded on this map has ~ compll«I by Kir"iJ Ccu,1y '1aff trom a vtViety of IOU'Q91 and 1, subjeci lo ~ without notice. Klng Courty makes no r.prK8ntaliona or w.JW1tiea, exprwu or Implied, as to Iha ~~~~~~r::~~~:::ru:/" general, &peelal, Indirect, ncldental , DI' consequemlal damage• lndudlng, but not llm'led ta, loal Nvenuas or lost proffts reslitlng from the use or rTVaUH d the lnfotmatlon contained on this map. Arr, SIM cl this map or in1ormrion on lt'is mapl1 prohlbff.ed except bywrtttan pwmlulon d King County. Plot date: Oct 12. 2007: \lddos001\x01\gislav_devlprnject.s\base2.apr A07PF002/3 ZONING SC HOOLS/PA RKS • .-..,.•Trails ,! Schools/School FaclllUes N Urban Growth /vea Line N Strools ; · .. Wator Bodios Road RJghls--Of-Way =Parcels 0 Par1<s DC.ties Zoning A-1 0 -Agricultural, one OU per 10 acres -A-35 -Agricultural, one DU per 35 acres •F-F o,est M -Minoral RA-2.5 -Rural Area, one OU per 5 acres RA-5 -Rural Area, ono DU por 5 acres RA-10 -Rural Area, one DU per 10 acres UR -Urban Reserve, one DU per 5 acres R-1 -Residantial, one DU per acre R--4 -Residential, 4 DU per acre R-6 -Residential, 6 DU per acre R-8 -Residential, 8 DU per acre R-12 -Residential, 12 DU per acre R-18 -Residential, 18 DU per aae -R-24 -Residential, 24 OU per aae -R-48 -Residential, 48 DU per aae NB -Nelghbomood Business -CB -Convnunrty Business -RB -Regional Business -0 -0ffice 1 -lnduslnal 0 500 1000 1500 Feet 1"= 1333 feet lQ King County The Information Included on u,r, map has beetl compl~ by King Couity stat! from a varMJtyol aources and la albjec:t to change Wlttoul notlca. )(Jng Comty makaa rw, r.J]r'U.-itationa or W81T81"1ties, •JC?fl!lu or Imp~. M to the accLraCy, OOJJ1)!etaneu, tffleUneu, or rights to the UM d Lsttre ,t'lfl=n 1f ,tr-1~ ,: /*I \ \ JC'J J:=;et;::\::C~~~-=.:~a8ny damages lndudlng, but not 1"'11ted ta, lolit r....rues or lmt proftts restJUng from the ...e or mlsuae of the lrtonnation cortained on this map. Arr; sale of this map or Information on this map Is prohibtled ucep1 by wntten permluk>n al King County. Plot date: Oct 12, 2007; \\ddes001\x01'Qlslav_devlprojects\base2.apr ·1 .I -i l~O.TI,JJ A07PF002/3 2005 SWDM N stroots ::;::: Water Bodies =i Parcels Landslide Hazard Drainago Aroas (2004) B Landslide Hazard Drainage Landslide Hazard Area F low Control (2004) Basic Flow Conservation Flow -Flood Problem Flow 0 Cities 0 400 Foot 1"• 500 foot ti l<flg County ~ --f ) l JThold0<matlon-onml•map hasbeen'°""lodby ~ King Cotrity staff from a va,t,ety of SOU"c»s and Is subfect to I chwlg,e without notioe. King eou,r, makes no U J repr8Hf'ltatk>nlorwarran11,e,s.•xprt,'8 <x lmplied, u totha acclXBCY, mmpleteneg.g. t:me/lnMI , or rights to the uN d 1uch lnformatkln. KJog Co.my &hall not be ltable to, any .L I _ ::e::.;:'::".;.~=.,~==-:..1,., _ . proltts re1"1ang from the uH w mlluse of the lnk>ffnBUon --::::==:::::-;-t~=::;=;=::::;-r==:--:==-r.==:==:.J===-=r===::'.::==~-=-=-=-=-====:;:=====~=~ eornalned on this mep. Arty u i.of this map or Information ---r-----/ I -I ------I j ='.1'8pl1prohlbrted u.ceptbywrtttenpermlMk>nofklng Plot date: Oct 12, 2007; l\ddes001\x01'Qis\av_dev\projocts\base2.apr 1------r-----· ~ :g ... ::c t; d ... :Jo. ..... A07PF002/3 CAO N Water Course (WLR) N Streets · .. : Water Bodies a Critical /voa Designation >< W Udlifo Habitat Conservation Areas (2004) c::J /vea of Potential WeUand Influence (2004) C]Pan;els Qttical Aquifer Recharge Areas (2004) ~i Basin Condition (2004) .H,gh Mediu m -Low ~ Aquatic Areas Burrer (2004) o c,tics 0 400 Feet 1"= SOOfeet tQ King County The lnforma11on induded on !his map hu been cr;impiled by Klng Co.xity staff from• 'IWiaty d KNSCea and la ,lbject IO -1 Change w'!thOl.t nollc:e. King eo....ty makas na r.prMentatlonlii or wanaitles, a:t,pRtu or rnpl~.-, to the a«lraey, OOf1¥)1eleneH, tun.l,nau, or right. lo ha UM of such WonnatJon. King Camry shall nol b9 labia for any gen&llW, special, Indirect, Incidental,« consequenllal ~-----· -~--------'-'---=,, I ~ -damag,ea !ndudlng,bl«no1~mlted10,loetr8Y&fUt&or1o&1 ___. ----contained on tNa map. Arr, sale of lhls mep « lnformalon I '---' ----L--f-~ ~ proll!s rea<'llng from the ... o, mlauoe of the l..tonnallon ~ ~ -;--1 / 1 ----r-,-, / ,--, ---, ..., / ,.--~ 1S ='.""plap«>hlbl1odexcept0,wrlttenpen1'uionof<W,g Plot dato: Oct 12, 2007; \lddes001\x01'gislav_dev\pfojects\base2.apr A07PF002/3 2005 PHOTO Wa1BrBodies 400 Feet ~==~ 1'= 500 feet ti King County The Wormatlon inckJded on tNa map has been compiled by ~ County ltafl trom a val'Mtyof 80ll'QH and la~ 10 ~ wjthoul notioa. King County mak.M no ntpnaentationa or W'BffWlhs, expreM or Implied, • to the acclnle)', completanM$, Umel"""· or righ1g to the use of auch nformation. Kng County 5h.tll not be liable 10< any general, special, ~net, incidental , CK conuqUIN'ltial damages Inducing, but not Jhvied to, losl AIVWIUH Of loll proftta ~ from the uae or mis UM cl the Information contained on ttn map. Al1j sale cl thla map or Information on 1h11 map la prohibited exc.pt by wrfflen permlukln of King C.U,fy. Plot date: Oct 12, 2007: \\ddes001\x01'(jislav_d avlprojocts\base2.apr A07PF002/3 2005 PHOTO Water Bodies Parools Cities 50 100 Feet ~==-iiiiiiiiiiiiiiiiiiia 1"= 100foet ti King County The lnfoonation lnduded on thia map hu bNtl comp.led by King CoU'\ty staff from 8 vari«y of IIOflC8S and is RJl:Jiect to ~ 'lllillhout notica. Kl"" ~ty maka• no ntpr..,,tatlon• or warranks, •xp,9ss or lmplled, as lo 1h11 eccur&ey, ~anflU, luneUneu, cw nghl:I to OW UH of such lnfonnstion. King Colrity shal not be llable for any general, special, lndnct, Incidental .« OOOMqUenilal damaoes Inch.ding, but not llmtled to, lost ,.....enue1 or losl proftta ~ from tne UH or misuse ot the WonnatJon contained on ttn map. Any sale d this map « lnronnatlon oo 1hls map Is prohibited axe.pt t>)' vwttten J*Tnlsslon of Kng Coun\Y. Plot date: Oct 12, 2007: l lddes001\X01\gi•lav_devlprojects\base2.apr R n ::; J L__ CIPAL ECTOR MINOR \1\1: + A07PF002/3 ARTERIALS N Streets Wator Bodies l__J Parcels c=J Cities 0 1000 2000 3000 4000 Foot 1"• 3333 feet U) King Cowrty The lnfonnation nciuded on thll map has bMn compiled by King C-Ounty staff from a va1ety of 80.M'OH and Is ~ '° chMge 'Nithou: no1oe. King C-Ounty makes no representatJons or warra,ti&s, exprua or lmpl~. aa to the acaracy, cotl1)1e'tel"IMI, tlnMillneu. or rightl to Ule use of such Woonatlon. King COlxlfy shall no1 be l able 10< any gtlfwrBI, speciat, lndil'9Ct, incidental. Of consequentl8' damagas lndudl~. but not limited to. lost revenue.a Of lost proftts rui.lting from UM use or misuse of the Information a:rtalned on thia map. Arry gale of tt11 map or Information on this map is prohibited except by Mitten p«mlsak>n of King Cou,ty, Plot date: Oct 12, 2007; \lddes001\x01\gis\av_dovlprojocts\baso2.apr • --1.__ ---......:........ - i~~-I . .._l ~I I~ 1 LJ l Ui.o<o~ «~o I I o.J..i>-l ~ ~l 0~ l ~~o ~./:' '(I I ~o$0~ 1f)Til0<v_-ef:-01 I -:,z-'ffe- 0 I __ L___._ -<-' ..[ _ _lL-1°(; I - ll--_ll '---____..I \ I '· l'"4 C/N ,...1 LEGAL DES-CRl!-'TiGN. THE EA£7 335 .a~· ~ih :-~~· Tl-j[ \/ES( 305 oo nir DF--}HE SOLJTH,J}NE HALF a, THE NORTH ONE l!ALf Of THf NDRTiol\/EST ONE .00AIHE!1. Df" TltE: SJ:lUTHEMT ONf:" ;:;;~;,,:f r:;:;;::M2~~E r;;~~::;~:-\.::::8[:A~::;, [A:;G~~.:: :/-::· Tl-I£ IIH[RSECTION OF THf NCJRTH LINE OF SAJD SOUTH ONE HALF [ff'fHE NORTH ONE HALF Of TH£ NIJHHl/£ST ONE Ql!/'IRTfl! or·t1:1E S0UTf1£AST ONE ~~~W't~~~ ~~fiN~"'fi!.1B'~~~~ l7~[J:tis~rDEl~~t~~ r~~~Alf OF THE NORTH ON( HALF or TH[ NDRTH\IEST ONE OllAIH[I! OF TH£ stftJ,T>j£AST ONE '. QUARTER. A DISTANCE IJF 355 00 FEEL TH(/'ICE SOIJTH PARALl"£li:Y.i,l1-1··tHE EAST LIN[ OF SAJD JOHN F_ BENSON !'!DAD. BZ.00 fErT; TH[NC£ VEST PAIMLLEL 1,PITH SAID NORTH LINE OF SAJO NOIIHH[\/EST IINE OUl'IRTER OF nf[ SOUTHEAST ON[ QUARTER DF" SAl D SECT taN. 355 00 FEF:T HJ THE [AST L[N£ [JF SA!D JOHN r. BENSON ROAD: Hl[NC[ NORTH. /\LONG SAID [AST LIN[ or SAID IWAD, 82 ao r[[T TU TH( PLACE IJF BEGf,...fNG: I\LSO EXCEPTING THE SOUTH 36 FEET THER(Df AS DEEDED Ta KlNG COUNTY FOR s.E 170TH H. P[R D!:ED RECORDED UNDER Kl/./G COUNTY RECORDfNG ND. 9309160774 AMENDMENT FOR PHAS[ 2 ;-~~-·:-~~-~~-:-,-~~-~~--~-.. ~-; ~-~ ~-~·:·~"re by "k-~'/,' )·~ • .. th , • o '"" n dro en I to th• S~r•0ty Map a~d Plans for_.:fhou 2 o/'H°eR-Q~. GLEN condo.,jniun, created und<tr c':'.,,:d·o.,,ini~m Dec/arat,·~-·i,·._recorded und0tr K1n9 County R.,c?rde,_-,-.=·,.fo 9407_?-fl'(J\'9J and rh;f: 3ur,t>y M,:p and P,'ans (<la<! vndec._·.·K,c9 ,:.:ov'.,J-',-Re~C':~"'' ·, No· 9401260';,9() rn urd<cr t.<i-cr<1ola 2'}.,~n, ts n-_.!Oha,e 2 o-i r',e . . Condcrn,.,,am Ftef.,rel>·~e ,, 'flad_.,-.=·,o Ameodrr,.',;or No to rhe Oeclara•,ron recor_,:l~~ roger~':/·~ • ., .. ~,,~:v~d~r )(i:':fCov~.J.r·-"· . _-.·, . ..- Rec<>rd<tr ·, No .(Ytr</t"Oil1,-:..:,.....,.,.,,•·'W,., fur ther'··c•/:~·J'(y rhot ol/ ,1ruct11rol com·p:o_o!'nts and "1rchan1c<1/ •.)"it@m_f::.,,( all bu, ld,~9, contoinin9 ·;~·-;;?,:"!Pri,in9 ony,.11'~-;t, t/i.-reby c~/~t<>d ore ,ub,1antial ly coo,pi.,ted·'·····.,, .•• ,,-· .. ::R /Nui;!rzs:; S. •r~ ACrnMCTJGt-£:NTS- STAT[ [F IJM-{IM:,fil.l J ) " lU.NTY CF KWi Ths ls m certify that on the _5. __ d:i.y oF ~--· J9<J!/. bef<T'! ~- the <Sldi!r~d a Notary Pt.tioc. ~scn:,lly ~~ l,.\tl.D.J....l11.1CM"""" l<noiofi by ne [O be the ----------------or ft ____ th:,t executed the f'orl!90"9 115tn.Nnt. ond adrowledged sold nstn..nerit ro be the fre'I!: and volu.tory oct and deed or said partner For th,e uses ord p.rposes t:he!--eti rientt:ln'l!:d and on oath stat<!:d that -----------------"<ls ou~dto 'l!:><ec:ute the said nstnnent on behalf or said ~~ obos, -•= /1.. A · C.. . VIT1'€SS r,y hone/ ard r>fflGkll seal h<ereto Qfii Vie. d:iy u,,d y.,ur f)-st -----~-_c.m,&.._ ____________ ·--1\tltary Ptblc-11 and for the State of Vashtigton. resd-g at._ 4Cf(CftJ--"lL----------- HERO IV GLE'N A CONDOMINIUM N'JJ/4.:.Tl/4.S[C. ;>9 T 2.l N R SE: 11.M l<JNG COUNTY VASHlNGHJN (PHASES I 8 ?J -lN,/D s~*-~s-dftr~(JCA Tr mo VE~;~}¢;.~-,. I n,#by certify t~~ tNS S<rv~{~\f ._c"i,ERON G.dN, PHASE 2. -... :-··ts:::;:;;!: &P: :~=~t::;:~:: .. :~::=~ a~'· lhatJ/-,o~··fi..(lycOf'l)/ifiriJ the:~ovt5la1S'Ori.r:v.f54'J4 232. and ::::==~=l;"?,;~.,te!y ~15 the (~~~ •.. e:~ cil,ens~ . .:if·tt,1:.-. ,S.T/ll[ LF 'JAS.'ilM,rON J J .,s :::oL~ff( Ci-l<[MJ Certlflcat"' lv"tJer 2i.~4 c:Q'l'E~ VlV116 J 1-11"11( ·=·.·-~y G l--l<m5en. PHg rrsi oo an ooth dJ.y swuri. statfi's 1hc.1 he 15 the Re~"r~d lal'Jd St..rveycr sgr,g tl-te above certtflc:ate. thut he has eJ<'Ql".t")ed these f!,:ire-a/ld Str~y Mops. and bell,;:ves the certlfl::ate lob.,. a true stater,(ijt ·,= / J ,/ -~---1"--F'~---------- Regstererj'iand St<veycr '·\ .. S C'J464·:: S~sabed 1.,...-.'<oJ>e'=• ~"ii;-~:;;;;·(~~;;~fY. No~ Pt.bit. hit for /;/!]fate of ~:Q~Hngt~: Ro!:~ ot ----·--~-:-~~------,.:...·----_-;,".:.- V[RTIC~ DAM ----------------· [leYat/On.5" shown hereon refer to KC AS: da.t.i;;~- Site berrch ,iark Is the north r1r, of the 11anul"lent··~(ci;'~ locale-d at che 1nters<!'c:t1an ot S [ 170th St. arrd 109th Pl""~ S ~ ((cvnc•on • h'J.97 Feet PR(f'(RTY LOCA Tl!)\/ -J9Jll.":t :,: E 170th St Renton. VA 111 99 ~V[Y W. P ACCURACY This condor,JnlUM Survey rs based upon a boundory survey perforMed under l'!,t dlr<!Ct Ion between August 20. J9S3 arid March 3J. 1994 Buildl~:~ '~~/iro:r /acc,t1ons and autsrde drr,ens,ons displayed nn the .5"Uri:.:·e¥.,_':aiq../tlre within .. -o /' of therr trlie value "Lf't, :}]!;; :~s~;~: ACc_.; Rilt'Y' • -~=tal ai,rj" verticul ~Pnsuis ::1w1~Y"d oo.'the plO/'lS J:-ie"et1 ore +-OJ feet or ihei" tr'-"' v<:.i'--"'. fr:e bou-~~~--nr,;~~ of the Cl{l~rt"lent:f.'~e to th<;.'f~s'1ed scrfaces of the Floor wa/b alld st:,~!--. .'-',~'r~-~·doar".s ar._i--~t ~~d APPRDV~S Ex~d ard opprovf!d tm _jj ___ d:iy af _Q~ . !'~!l!/ DE.PAA'TN£NT LT ASSESSH:NTS ___ ::'Clo rr Aw~ __ _ -~~---------- KING COUNTY ASSESSOR DEPUTY KING COUNTY ASSESSOR RECTF.OIN:i CiRITFICAT[ 91" ,/.,,;;,/yo / Go S ~·" .. _.. . a~ rl Fled for r?e~rd at ~q$.st of -£,12.f...L.4J----S.."!-/2u.,.$.. __ ttt5: ..t.'X~-- day of 4A.. -~-: __ --;--J!i..t.-t:·. ~t ~-l"hJtes p:;is-t f.:.L.Q..-. and reC(l('ded 11 ~r>eL..a.L..:'oFC~.pag,es-1.r.~~---Recordsaf King County. :~·· ---,-~-----.•. -------.---•· .. -,, .... ,('~..,:,.~ "-01-&.P)O..,._~· ____ ..:._ .... _/ ______________ _ st..f'ERIN~ [F RECfRDS ::.. · ... f'REPARk a/. HAffSEH-'s=URvEYHKi . , ·.· ·: 2SOO TALBOT CR[ST R£t,_T-ON:.·.!A 98055 ti,~. S . HANSEN s UR~ EY 1 ~c( RENT<lN, l!A.SHING'!'ON .:rEL .?'3S-844·b SHEri-\ I OF 3 -~" -... ~· r CTR .(;F cEC-•. ' ,, ( <I ' ,, I ,, ... ··J. 1·· / ~I I ''Jig . ' • Iv" -1· ,, '"1 ,,, tl)" 16 0/l"W ~6Si 99 ;I /,' I I I FND •l BRH I .R •04.14 I I \J,34 ,. I. 0 02 W. OF t..o,•.(, FROM rLAT MONS ~ f I /4 (..Q~ ~i:( :0'.I ,~ ~ Hlr. r-'0N IN '""" o, 14/'.I~ HE'ROtv c; !. FlV A G"ONDOM!NIUM Wl/4 ~ll/4,.\f.r ;,<, T 2~ N. ~ c:; f V M KIN:: CJ-11>,~y_ IIA~HINGTDN ( r,, lf\'.:::ES ; 8 <! l 1/1 -.!'"~'f_ ,,.~·~~-~ os·w l~:.i 9~ • :,:, ·~f1!,_.j~.l~·.~t;"; ;~J~:M_•" i fND BRA~~ Oi~K 1.N >WCK 0.07"S, &. 0.03"\II 0~ C/\1 (.. FROM PLAT MONS J FND Tl(. IN 10 IN fi.OCK D20S.&005E. OF '--Al( FROhl PLAT MGN5 WI =I ;lg • N -~ ~i c' .•. ., 12 0 30 o· .\0 60 RASJS OF BEARINGS IS Tf--E P'-AT OF THRESHOLD RE'CJJRD!:C IN VOL. 164 PGS f\ I J RECOR~S Z1F KI NG COUNTY THI~ SURVEY IS BASED L:roN THI~ ~ELTION BREl'IK- DOWN A.N1 MONUMENTS OF ::,AID P_AT. I l . r,fac-cu:i:no:.n;,xo::n:u1,.DP --110 ge-~----~-i -:_j-._-.,.,~·-·:- ""·o· · .., o ----fr'---16.:i .. Tio -1 1 ~~-:/R 5 •15434 1/ G 2 7 '·."-,S, :)F (ALC' JJfE ARE.'\· 6/ '."il6 5.f' I 55 ,4,CRES 0 < 0 "' ;- 0 (/; .· [( _._'[r:: ti 11 .1 r .. aJ c,; I~_:/ I l · "\J > < I ... "' 0 :~ h "I' I ' I r f/ I I . '/· ~," ·-··--, ' ' g I.... -"' I'/ ,O j" ' f 1 I I I I li! J' ::; ,,c\·e.,· I Of "''' .. ,,,, """' .... , ''"'"' 1 ~ - 107 • ~(}~ '"'. m 0/ ' ,05 . Ji"L. A -1-.: ,,. .. : .,. .,..,.- r ' m ::-1 JO• ~-.. I ,: ~,~,,.~~·-,, I I[ I \\\ \\~? ~•ec.=t-= I f-- I'"' -·~ I < ' -_, /~~ -= I ~ I 14 ~OR ~Ee. n-n-s. M(JI\' IN ,::.,,~E PER ~~!IJ Vf T>1HSHOLD N>l9'520t·E 15 Wl!.>l Tfw~ (:'.Qt1~rROCTI~ fAH...,~T PO~ nc.. • g~ I 002 t !7~ S E 170TH. ST I~ ' l'HAS F I\,; :, ·1~:,. f I ' ~·) I l ~--lt4 r· .. ·:J -f N _SQ" 52.·Q?-~ .384. 94 J ~~•SC·~. '' I I FHASF .J,:. ~71' s r. ·) ,_ :/',' e ROM ~-.lo.AT MONS 1-" :: /' ," ' 6, .. , rs,,' • 104 'A-A' I C'J. -·., .. BL D , B , i -~ ',. 105 ..... !07 .,.. Wl 1 ' :;; ... "' '"''f '"''··1~-105 -.. -A 107 A-~ ,_ 0 I % a , , • ,, J ·' ~~"'·"'' :E-,q__,-_,-~ -,• ,,, '1E'"O'J .::1;_1_C TRA'JF-R'.:f I 11::.[) I():' 14/94 l FC,fi'i'l SO -510RM DRAIN 5S • ~A/'IITAAY ~[WER W -WATF.R I IN[ 0 • F I RE HYDRANT a C.ATC.H BASIN 0 • MANHOLE Q • UTILITY PCl.E 111 -I !(',HJ POLE fi!i FND MON IN U.SE • fND f'ROP. COR A5 NOTED Liej PO\WER VAL<.TITRANSFORME'R !--IC rlANOICA~ PAR!(ING 5TALL it.ON IN C-:A~f ~: w c,; ~, m ..J ' 0 0.. 8'0 al= :c O'-f- 0,, 0 ''~I .. !EL .. m !~ -· . __ .. -~ 1 -,----,,,.-·· . · UT•l o,M < IH :~A.: .1 ~7 ~.'J. ~~+7~ur<>7~ 1:~ 1 ---: z/ t 334 92' S. LI "E N. 1, 2 c~.; •~l!. ·.· ~,:· N M9° 57 · 07 E ··:·. -l .;t; -----::1.i "rV ---~ i:<o~T., MO'N·.t('I rAsE ~u·~~f:A~~1~~ .. ~W1TY £'".· .. i:: N. 11< H 114. SEC a'::i:,._'!;: ·.,.,), Lfl .(IF TWO iWOli.S • ---_.:_,_'__ -/ ~er.' \ITE BE~~.-"111'R;:" -.-• :. -N. RIN OF'NON C.,\SE 8UILOING T•Es "RE TO FAc.E OF IJllOP<~! ltl:A!WIED ~T ~l<ilfr ,.__f, TD THE PRDPUTY LINES. ~~•V•~ME~T AC("Uflh(:T II•· Q.I ~OOT. WN. 1N,:CAS[ HE\/.• 421 .97 . . K.~:~~s., .. ~~::I.IN. HANSEN RENT-ON. -TEL SURVEY! NG l!IISHING'fON ?35·84}0 SHEET.. 2 OF' If··'""' ' ' UNIT JYPf'" ·:,. 8F" 1 14"' ':411/'.Tej ·, · 1-1 ; BFD(,1~n=h ' I b:---:--1.lR.1 ~ S ~· ~ .· I fNTA• _. 1r); IT 1; I.IT °". r ... . l "'' I -·' -. __ f_~·i( 1~-L, J ~---~-- (IF("-; l!__,,_ _ _JJ AREA.,· 972 OFC:K."•. 46 ST9]1: '3 Ul\1 r TYPE .fl·-:~~- '----'--='' -J9 5 F,; ,0' ] ~ '" " -iff !~r UN,T AREA, I 06S SF DECK 46 S .F STOR IJ S F E>i'RS: VJ1,11S 11-11-;,1 ]I '' 12 101 fiER01V GLE1V A CONDOM!NfUM N'.I J,4. SE l/4 ~((' 29 l 23 N R. S [ \J M IONG CcltlNTY. ~A'>HTNCTON lP'IA\l.S i B 2) ...... Ul\LT. -Yi. 0 ORP LA Nl ' --~·~· ' SCAI f: I.-, -8i -dd'f~~~~\~~~~~ [-~ ~~ -=-11 f : . fHI RD_ FLOOR_ --=---j --~~ i-_ -,'S .. SCCO:C c COS f · _;c'_; '\· c~~-j • -~.:-· FIRST FLOOR_ -1=+4=-' ., . ·--- UNIT lYPf:. "A-,,;;\,re ./: ~ -. I urr-;;-"lFf'l 0_ Hfl.R•2. =i(J~ Jl .~, I"-q-l~DL : -------e..,1-=" : . ·. :_'.I;)_': Fir --1, :;, : ·1' . . , • • I ~cffi~u-:·, '! •.• / lbtp:,: ::x:x_ ... 'b J ,. l ·:. I ,. __ ,,r ,-·,: .. '"'"' _ r1c~· ":.,·; r-· ' ' i •• 1 lJU I LblNG"TRoss<s FCT [-0/'i i';Cyp·/ CAl ~l -s NOH ·:e···_. ___ ':._ '_::_"'. '). ~-':.""H ''". I ,I I w.-, .l , ... ,,;1 1_ .... _:Jj u.<t·i1 AREA ~EC:K, .3~{~.r._. 13 o °F ~ fOR iti/;~ TYP~.~._,;:~ UN:T AREA IJECK, sTOR 06S~.F. q6 ~ .F I) S F UNI:~ ~AY BE MIRROR IMAG[5 OF THE A~OVE FLOOR PLANS FiN~ISHi:D FLOOR El[VA110NS INIERIOR AND EXTERIOR UNI] DIMHISIONS ARE •-n. I FOOT '~·-I cci"_' I, I _, ;, ' . 1j_--~ -01~1. E_Df1:T-- JNI f AREA DECK ,I()~ 97? s r 46 S F IJ S F ·-·.,-.·.,!tlr r TYPE -B-A" UNI -r·,.~EA DECK· STOR _o,,;T.F 46.·.s. F. I.~--~ F (nu(1·1::1,to BLDG . ~-.·--· .,. ~.~~f~ENT ·-{1 i. ~: . " I= DO~ t.l:1:\'ATION{ 1\f;·FL ;-?No >L -:li;o FL. -:-~~~-?.~--;: :5~ t:: ::~. f BASEMENT FLOOR Pl.ANS 0 . :.':. --::: •. :"I" I "·I "I , I -·Ltr··· ... .,' ·'··-· .. I G~;RAGE BLDG. -.B'·'"·:· ., • . -."·: s. 21 I s.:.F' ti±Jtr .. • SCALE: 1 • -30 " " S ! 13 I GARAGE BLDG. -A· 5. 21 I S .F . ~ HAN:i.EN s wrrv EY I ~G RENTON. WASHINGTON :YEL zj5-84_40 SHEri\3 OF' 3 = "' en = ~~ r.=======================================================================================i'i~§~ ,;.;~~ ;;l~l::i ~~~ ~ () 11 () m z C) z m m lJ z C) ~ 00 C) z -z 0 iii 0 '" .., .., • :i ~ ,. I ~ "'"' uu,· ..---------------------,GRADING & DRAINAGE PLAN SPRING GLEN.APARTMENTS KING 00.,WA. FOR; CROSSMARK PROPERTIES lhlC. I ~~8 L~'h~~-f ,:tt:a:~~~~!~/~~:::;.rn Tf.MPOIIAIIY SITE "OOAt:88; IOIOO I.E. 170TH IITREET 1;a o.NO(">VfR P"-"~ E>ST. SUITT: JOO sur "'· H ""''·H PHO~r (2DS) ~J1-H7D r~, 431-TH~ "~s ,§:~ ~i' :,9 ", 0~ .~~ 0 • C nr111~ r'tl'I Kliib co i°l[\/1tw r, CDrlfllNP-:> 01/llt':,/9~ D!i6. "' e-10·9~ LEL u11oi? .1 ei I "1 ~ .cl ~.' o, I i f - ' I . r--, - I I . J I ' ' ' ' ' ' ' ' ' I I ' -, ' '-' ' ' I IJ ' ' l : ' ---~ ~-: • c:Jf\CO," ""'" ',\ •-,.-10·0,·-E 'j"--''<"c"c· __ _ ~ COO: N'.TOIMlrt:; \Jl'.lLI. 1 · f',OCK cHECK DQM (T'lr) •• ~-~/-~ 5\t"---. CUMOCUT>~ \':. .1;;:-· fll'ltll'l'On~nr-J (------._...____ z'l!IIP,,§OC I i / .. ~ ! ' ; I I I ' ·o \ [ .... I•':·· -:. .. L:: .. ·_-,f_., l;'ii!.,:X,C.: :;,s,t,ao ~·~. !.r,z_~~P .. 55,;a10.?_" --~·· -- ..• i I ' ··.:.J ~ r, u SCALFi 1"•20' CVOl'lllnK: l'Ullll\/CArl<Jln.lTK ~-IL~ Of k(.::f to;.t [JI' 1'11\ltl'l'.IIT ~~ .'~~J."W i-llM INt ~t OOJUl'I: Kt~'::. ~~°%~/DA~~iENTL4l SITE DEVEl.OPMmr APPRoVAL Pfll.lEcrHCt.~ ""D.ECTNMI!~ B1rrE trtJKB 41D lftQ ~ • ' ~~~ j ~ ~ ~ ~ § ~ ... I 8 °"'11:~llllt: ?tt i'.1 ~'l,~""4:; & j D~tzi::.ta,/~ITAU.I o=..---:,.-----"11 ' ;~ VICINITY MAJ" ~ Ef 11 ;; o. o, <• .. >-------- ( \ •-·• I I ' 1---un1ro aruNocrll,J'ouMD I ,; I rnr,,,;1r11., (r'l'n 'f I • =~ : .. .. i 0 ,. :;! ' C ~ l \"·11 •,oo J":+llH-----' I en ""''""· WRl. ... i./,L t;~/ig ;, l J I : "' f-, z - --- i I I M::KfFW -. \ ) ..___ -~==;-~---, ·--i.···,1::J1ff11lt"···-. ·-·-----. .. ,,r / ... .. 51.CITTID Cl"\lllM ___/" S.E. c. - SHEET ISDEX c , cowo .. n unu-nu PL.AH C • Q""°"'Q •oR .... AG•PU.H "-""'O""RV .RO&ION CONTROL .U.N OfF·•T<PMPIIOVIMOP<f>lo,oa, ... .o ... S.LI oo•-!lffl! ,.....,_TS IU. 11010. STJ _c,..c~TJON• Ct E.><15TII<~ srr, C0Nl)ITll)N$ ' 2/" ~ ' I j" LI ~ l I -j-. ' ! ¥ ,<§ -\ -··· .. : ... s~ ·-.. ,,'"[~""~ i ___ ../ / .. ... , ..... .... n· 170th ST. d~,s--- LEGAL DESCRIPTION '"""''"'"'"'"' >'0"1001,uorno<,.,,,m.,,T""'"'orrnswu,"L\" ::::•.,;,,',..,.""" n~<Or.'~,f.'.i, .. ·..,.,.,., . "'""'"'"'"' "'""'°''""o'""'°'ntOO,totSA"<"'-m'""'""" ,.,,.. , .. ,, •• "" .. .,.,w.,, ""'"''""' '"' ""''""'" ""'""' ... '"' """ !;:.!~~.?~~1:•rFi ~,i!.:'!~::~·.',:'~:,~~-~:.,1::: ~:~.·" ""~" ,,,;,, ""'U.-<L V'7U .. !0 ,OOnl C!"! 0, ..,0 ,ooltTl"<-IT °"''"' 0, ;'~:.';-"'!~:~·~~~ 0, .... '"""" '" "" '" '"' 'A""""' "'" ;';f,;!;,~"' «-. '"" ,.,.. "" or ,,;o ,,,.,, o, ,..,. TO"" """ " ~~;"" ,,,.. '""'"' ""''" "'"" "'"' "'' ' ' ... ""' ..,., ""' "" . ,lit : -- ~.;-:~:~~-=~.?-~ Et"-:!:·'" LEG£ND mort11r'!'unc. ctnMLlnt CllS-INl.i rtrcl CJ;~ll'l, amour, ----o rn~n111., &Ol'll'I Lmt t.J/ cim:l!~,1t,111 ~--==--= ~,;,~~ =~:1~,~~~(U -0-Ul&INL, Mldtflrllt.t -ND.I :.nll'il"ILIII( W/CQ[C~CII~ ---e---Nrkl ~.Wdtl'\nAf! 1:J/l'l~lll..C. ,.___ 11".IJ IJQTU, 1'1QIN lu/ nl'\t 1/'!'0l'\RnT a:xx:co:n r,ocan'I' · -··-··-<I ~l'\ODnRIN 1'.1Ul"ILl~I'\ 'c,kllL( cur.mm CW\A1N 5Ulllt0 DM!l1 REVIS!ON "'I I ,. :E, 11 g '~ 'ji -<t ,~-;-.": : :::.i _., -~ 1, < 5~: 41 z ~il: ~ fg: ~ ~.:g ~ <~; C, !~t 25 li); ~" u., ; ~~I 9"1-61 P~<>"C' '"' OGSILEL ,.,.,~,;;;, ~~- 11-16-91 2-10-!13 ~ tJ = = = PACIFIC ENGINEERING DESIGN INC. = = = CIVIL ENGINEERING AND PLANNING CONSULTANTS .~,/0 ('.lil'0 r.tVlo!Cffi ADDW/rimorn FL.Ali i r110nLt IMfD ~ 1b·'1Z l~ f\EVl'.'>ffi rt!', KC llt"ltiJ COr'll'lU1TS 01/UO/"I', Dl,O ~-1()-~~Ln ri :onH --- !\!l'l ·.W :iti m.-,.,·J::fl(;{. i;1/~·,,,·J0Ci91 !It[ ~El'.T G-4 ror\ \ cormmmnon \ ···-----.....__ -~-- ~' a '-..,1 1 I ii· ;·.' ""i ~'__ : fl CUN'J CUT'!l r"!f\ l'Jl1G C.OUflfY /.' MllD 5TA!1DQl'i1J5 OCnllL '"IT , /I V I e.o z•is :'.lO'LfFT\ ' / a,•1 (nru) I l'lln·41L. i.ti / IW,•·41ZM \ ~\ ' 4;4 51"Q 0•(,I ~on Nll.LED ,.-SP(INO OlEN Sill ./ ! !'"'' \.. '\ : / 4 ~~on•1 wrnc.r:. / / / roo c.r.ro::i orcnon w, 1 1 ' / / /~ s-,' .d t I ,,(", -r--1 ~ ri co -----1·~~l'+-l-- Ol1-3fIT. 5TOOM COMMECTID/1 TO orr- 51Tt 5'1'5TU1 ~ ~ r 5rn . .,,e.49~ · mocuoo. c,uITT/l I i 'olOCIJClLK ll'ln\7>"EMUIT5 I II r e.TQ ~·bt,~O'LCFT , C!:19 b (Tl'f'tr) I . 1'11!'1 • 41'1.5 /. / 1nV111.•·411. 5 /! j/ Ull.fll'~ ~()1&0 £--1reTAU.lt'Tl'lffiHr'iOCK fF l ~41b.OO • __ , 5.1rnnri ! I Unc)lflOI\~' 111':1:,0~/CllrlJli\.!Tl( '!> u."..'.'iT or i.ctor Eot,t (If ro~tflt'!1r r '.',_f_ 11C!' '.,fl\UT i IU/;,'.l ~~t. 0 t !U~.-41,.~~· DATUrJ, K.C P.'<. SCALE : 1" = 30' LEGEND D LI~ EX IJClTUI i'\CTUi o ~H n ill"i( HYOf'iQITT ~rr n. rourn FOL( c,m. r.x. 11.LI"l'lkl1t l'rnnHDLt o ·u n T(lllll(lnt r'il!ltf'l n kJOTrnl'llLVO r.:~-,1ic 1, ·cL_-1 V t~.'-: t J.~. ''"'" J•. ---- 1r,·,.-.,·11i.~~ /71 I : _ '' --~ 4 1n,,,·1~1·4ll.Jl ln/" 1 ID , ~A 1,~0-2 <.:iTAt•1z.,...t 1 LJ21.¥.lt.'COO:: ,... -· : , ~ B I · t. 1 '-.... 5·oorn- &o O•W.W'Lm(no"' BT)·______,./ I i ~ ~ib IW5Lf 1i·coo: T'--. ~ . • ::ifAO·~.w-~1CHT(1oti"'£lY[.) I ii 5·o.oosei , '· ~ ~11.1i_~ ...___ U>Lf I~' .f90C ~-0.011,- --~:~-n S11n:rnfWP10nH!X.Itmmun( C1J•11 /Trrr n-Je'!l .:,'+ LIP&> 5·0.zsz1 N~·419.? I/ ~, lf1V~·~M ' 415 ~ / 1nv ..... ~1 1 ... r" ,,1111..1.. _/ 51.'.r :'lllaT C·4 for. c.ormnuanoo 'oHtt• 15. nrrr - CT) .. IO (ClMINLU) l'IIM ·411,, 9 IMV,.•·4J~ 9 ~'.>nH ~~ ·.ilCJ I) n1·~·,o: •l.!X:, :A l~V~ ,s. IDb 19 • .• ,~ ::r, .i,n i1t.11 1rr.,, .. ,-M.i(.5 :: .. ,,,..,.. JI& 5J rc·vb·,,,, m.~I "" 'JTA ~· l':>t. ~ 'LITT c.~·9 (cuno1nm) f'll1"1•4WO IOV,t• All.00 IIO!C c.~ .. 1, e, ."l.i Kl ro i:t.1reroLLro IJ/ now:o CJJl'i:i rnDl'l( I (;Mft'. n:r, Kiri(, coorlr'( MAD 'oTDJ100f\O:J OM.II~ ""~ ---n C!lTCHM)ln I 5TC1'll'1Um:. ._ "rn C!IIT.Httf.,m f e,rol'\Ylll"t -.-. -MEIJ ClJM, C,L.fT111', t ':JIC{IJilLK RELOCATION NOTES G) r,cLOCClT( a. m.!Ef'i l'DI.( TO oca,:_ ti; 51ct:WOLK @ l',ElOCllTf. EX i'1\t HYDl'il!Jr. TO rJOCK /"f '.'ilO~UlLK C:;'H."illllE .~l;ITT·l)f·~nY-----1 Of lclb''WC '.:it i 1--mlFLF,[) L:n[ ---~·---1 f--'.?T~ ~·N.<J)·rll:)Clltm.GIITHn r'{)f'[~TY Ll~E .. I i t,[( JDLK lri'f\C'Af1cf'T'j 425 420 m 410 r l I lf(l' '/[NICOL c:JfWC I I~ • CXQ'lCIOC•~':IIOCorl'()(la ~ 1 .. ,,._ ,__~ ~ t.f>_ml'V\ I ""'"'"""'"""" -·1 ~t ?la il ;, "'""·"""'·'"'· 1 ·-1 "' 420 = \ ~1~ ~C ~ ~~ ~I§ '""'' I I --.. .,'5·0.ilJOO _. :;-; d .. ~~ t6~ :Bid \ I •••. · rt'1V 4J0 I c-fj,·--..... I~ 'I' i l ... .:. ;-'f-~~::-~~cc·. •·=. -I ,,,~:"CCM~l5 ~·O.~ i . !i•OO~~ · ~·001~- ?~I ~ ';, ~~! -~... ~Q 0·~1-~·. -~s2 4!0 =i I 2~ n .:;::.51in ;ski~t "'.E. .• r ~H::: .,_, ~-~ ~E .t.";:"~"-' ~§~ii ~eii I 0+00 I 1+00 (EAST> I 2+00 (EASTJ I 3+00 (EAST) ""1· • ~e~~ I 4+00 CEAST) KING COUNTY 0.0.E.S.' COMM£RCIAl I RESIDENTIAL SITE OEVELOPMENT APPROVAL Pl'lOJECTNO (;e• Pf>l:)..l;cr 11.'J.E _______:_ ea G"SiTEEMQlr,'EER . ~ IMTE7.eLDs,cw --"•--'----~l'l»INING-.. ll,\"JE .3::&1u._ S!OH: 4'+,. tff"u& D~IZDNNll-.OSTMJ.S D~~-°"'-i::...-------- REVIS!ON 00 ... z " " " ~~ ..... :,; 00 -= " ... ... Q -~ 00 -' ~~ ~· 0~ ' t illlh ; .. ., ' .. ,. ~ t;; ~ .. •• ~ ~. .. ' ~ ~ "' II '"' z w ::; - :--1 ,t5 I ~ C::!~~10, 1, I fil •. :':' --Cl' j n ; i~~ : 0'" o 5 ~ 11:g!:!! ~ ~ :,(;;:i ~ t",!) ~~ ~ w C, !;11 ~ Z ~~•u· n f ~~~ [ Cl) O'"w i i..;!,n f, 91-61 "' 11-19-91 2-10-93 ~@ = = = PACIFIC ENGINEERING DESIGN INC. = = = CIVIL ENGINEERING AND PLANNING CONSULTANTS THRESHOLD 1 A PORllON OF THEN W 1/4 OF THE S.E. 1/4, SECTION 29, TOWNSHIP 23 NOR1ri, RANGE 5 EAST, WM. KING COIJNTY, WASHINGTON. RECORDING .C;i?T!F/CA fi, 9J"OJ.J3 ///,, '( ~: ;' ;,e~,:;, ol ~:·~1:ro~1 ___ ~7n1~~~:f~~il)_~~-~ '~~i:..~:d ic ,cl.· __ L,;._,;.'o! P•o\o, ~o;rel,) . rec°<:C' ol Kln9 Co•,nt~. Woshln,Jto" C!IV,SIQ~ C·f" REcopcis.m~ [LE·:rlCNc. I h"o(:°j ce,\iff,111b_~_.1hi• plat ol .. THRES'10LO \ i, bo.od upon on oc\uo< sucvey • ond ,i,,bdi"1oion:"of s~·oti<><l 1~ To~n,'11p 23 Nor\t,, Ron90 5 Eo•\. W.M .. thot 1n• en•.««· ~c.d dlst~r[c .. oro i,ho"'1 ,.~roctil' \hor-,<;n. ";not \ho mooumec,l, will ~• sot ond the let ~·;d blcc, c<><ner,, v,II ~«:.•tol<ed·col(eootly on•\ho 9,0.,nd o• conotcuc\1on is eomploled one l'1ol !.·ho.c !olLy ""mpl'ed "1th !M ~h¥o;on, of. tho plo\lir,g r•gulolion,. · 'lif ,,- MLLIAM E. Ti'<O!dPSON, Ill. P,o<o,.lonol 'ond S•J"'e;c;·- Cc,i;~~ot< No. 18100 PAC-TECH ENGIN([F[ING, l~C 6100 SOUTHCENltR BLVD SUITE \H' ~~AflcEc, I'll\., 9811!8 Phooe.(206) 243-7112 t:!&~ .SC:,~1!,f(. Dff.~1:,. t/{_EN,7',pF AifffSSMEN TS ---::+----. ··:· .. ·: .: KING COUNTY C;~NC!L: /, • Exom,oed and opp,o-,d 11,,~d£. do:, A~~ ,/1s 'J.:} ~;)r/.r4,,{ji_) mw~$~ ;;;;;;;,, k~ t:;;,;:::o:;:~ ·: ·;.s:1..-, of \h~ Coun;II ···, .... . '•., ..... _. . FlN~NCE C1'1SION ·-~--·._ ~\iepu~y ': RE$TRIC;IJN~ .. ··· ... ·.· NO LO,l CR POijTION OF A°•.LOT IN HS PLAT $HALL•BE /ll'vlO(O AtlD SOLD OR ~ESO.D OR ~:~~tL~~~1~0" 0:ic1:1~¥J1:r1i"fg; :t i~tD~;;\·cfV~\[;"'L1 ~~~~ TH,s PLAT COVENANTS ·:~~-L01's;,v-,TH,N TH_\ii PlAT AR[·_·.s~SJ[Cl 10 TIE CO'JENl'.NTS R[CORDW THE~. /l.o.Y Of" ' ~ "'" 192.J'.l..lN'J(~ .'jli.CQ',DIN(; N~.08F~ ///('R[CORDS Of" - -. ' ~%0 CO'JN1~ . ~~SHINGl~_·. · ,1$/ 5,?6,fs-, SHEET 1 OF 5 THRESHOLD 1 SHEET:20F5 \ . ·~ Q·j,[7 A PORTION OF THEN W. 1/4 OF THE S.E 1/4, SECTION 29, TOWNSHIP 23 NORT/-i RANGE 5 EAST, W.M, KING COUNTY, WASH/NGT~ LEGAL DESCRIPTION ii-I£ SWT/-1 ONE HALF OF ii-IE NORTH ON£ IMLF OF "" !-IOR71f/l,nr ONC ou1R,TR ()! SOU71-1£AST Ori£ OIJARTl:R r;F SECTION 2!J, TOIWSHIP ZJ NORTH, RANG£ SCA.Cf. ~-M l(/Nr7 COVN1"Y. WASHINGTON; ' EXctPr /HE M"sr :m5.rJO FffT.· rOGErHER /JAlH TIIE NOfm-1 0/'IC HALF OF T'f[' SOiJ'!H ME HALF OF r;fE NOF'/-,l'rE~-r Or.E WARfER OF TH£ SOI.HrlEAST ON£ OUARTrR OF SECTION 23. 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JO 11,!j'[Sf/.pW I Pi A .''·I.S HY !H,F ACiiO'V c.lf ii,/ l•M AOj,,',/lMENi;No ~-·,, ~NI) /J_r Wi/ C'.A!M'~,£0 R,'""':OR('I/-IC.l/e.' ).VD er·JHR[SHO'./) Or:!IT. CLAI"' oa:o ro K,NG C:!i.•N'·l'X. CATc,J Rt:CCRO!N,; AC.GESS DETAIL GRAPHIC SCALE 00-T //4 ('-fl CA(('.m) 'W , <>ost!lr»I ,y,, THE P1.~'r-/Jr-' "Cro,/,~ !'ARK 110:.'~ '1.l. •e•.N. •'-· . ~ " l : ~<-CCJI'. ~"""" n I FO<.K!TA"'°/N= IN G,<:,E 10./.'J/!l~ ~-I . I 7JU"'' .,SECTION DETAIL (,VOT TO SCA/.£) IHAIEl<'.lf fW«fWfl€S r!Tli..!i!UI. 2. r· rorAI. srAl/ON rJT/Ulffl. J: ""-1 /()T COl<Nf1/S IIAIIK[l) lfrnl N'-'fl'' Hr!/Af' 11!!1110. !'LS C-"' NO. re:oa ( All. rf«,,f /()f ro,:IN[FIS AR£ !l(TTP{l/{E BY f',( NAIi. 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I .!7"4917 ---fr;gz-n·n'.JO· .· J.57" 16'!8"27" 12.82 /J:?/~lJ ··C.J6 .; .W 8/I J!.I !.IOUO'OO _-:-:--'---E....-----_0._. ~l~'~'-· ~'~"~'~'~'~ ~t>.f s I SJ():'r.;;";"-_ . ------------------------- .,-/D.00 CiX' ,a , 'l_•" [<'flic,r Af .¥,fl {l,II/CCAffr,'r,,;;,-,;,•~,~>,,C,;<,'!;' F'1'1 11/C "W'M' :>,.""" '-""-,-.. SASS 0:-1:EARNJ . ··, ·.·~:-c: , ..• ,. : ASSUM,-:; ~·cp-,., M',/MT.<':~ -~~'ot~G Tt-lt NORTH uil'c OF THE :c··T,,rAST C,!ARifo.! ,'F SEC"fr,A, 2!.I. . " J/J/1/ j/J5fj-/ TRACT A N.GPE l'«rn·,·.-r.,.,,_ .'EK(i,/-IEJ/!Jlf.mt;,'/Cil,'r;> Hl£HJIP I -A1S«Mlm HJ/,.,IM""'1111//IW<"II<llall~ _!E:L """"'"""""'=•~,-r.,,_,.,-, . ...., ~I\ N(::t.,.,, ,,.,.,_._..,_,..,,..~ I ~.....=;~~';;';,;.._~,..,:; .... ,...,~ 2 ~~~~~1z~·>~.-~'!" 1 _......,..L.,.,,.<>ES£Amc-mcc,;y;>y-r,c· ""'""4'"'""'"""""'""""'""""'-'A'<.'.i<"""'--=· /1£0/i'-!l,<.l'__,,,,,,;;n:1:,.,,=c ANJ"7>C Mfll'r,.,..., ii' '6-.f>,' liU.C< ,_.., """''"""' " --',,,-,. -:;i --- '""=~u,wn, l !" /!>1.<t. S/A/1<¥' U,VtfIJ J Al.l.1'" _ _.,,.......,,,.,,,,.._.w·~ .,,,,,,_ Pf.~ Na, 1$/IJD. ':~~11f'Ff11£11<:E18•Pl(l<,l{]l,Cll!I ,, THRESHOLD 1 A POR770N OF THE NW. 1/4 OF THE S.E 1/4, SECTION 29. TOWNSHIP 23 NORTH RANGE 5 EAST, W.M, KING CO(INTY, WASHINGTOIJ ·,,,, I .,_ C' '1J ·.· )JJ l: <11 lJ lJ I c~ ·· .. so.x .. JJ.c:·. p·49)_f'' . ·--PJil4 .. '. ~.'Jf'. .. ~:,,_~ ~0._9_.?' ~HJ_!_q.:._I ·1: CV!i''rf." f. RADll)S j LD,'CTH j (Jfl_TA ·· ;:Jr :· 10 X • 2J J1 UJ::5SJJY1 • -----·-· ----- u "-Li GRAPHIC SCALE ~-..J._U ( INr>ZT) ! ""~ -!,(I II- BASS(¥!.!E.-l.l#,'G .. ~'SM)JES ,,.,- , OScV!/: ,:I~, ~9-:•'o!?.7:11,sr /1.LCNG TH£.i~'ORT"rl l//'1/; '~[· _, 'o ;",-,£'1S." CJl'R;t'R. ?F s,cr.oN .. f"'} I ,.,.vre,-l'IQXJUl(f ~rAJ.>r:J t ,1,"f1JJ,,TIZrl,D/I"1/CI/GlJ/fl/CG,,1'1<,....,H1a.n !'NUJTlK(rm<!:~ -------------------------------- THRESHOLD 1 A PORnON OF THE NW. 1/4 OF THE S.E. 1/4, SECOON 29, TOWNSHIP 23 NORTH, RANGES EAST, WM, KING COUNTY, WASHINGTO(f DEDICA T/ON: ~NOW All P!cOPL~ HY THE st PRi:S[NTS \ho1 wo, lho vn<:1eui9ned ownou of iolo•esl '·"·: (he horot,y oubdi>'<!od. h.roby doclo,o thi, plol l,;, be tho ~'avhic tepronnlolion ~f \O~ ,_liboi.sion mod• horob)', ond <l,o horeby dodicolo to ,oe U!O or lho public lorover oil ,treets a,id "w" no•. ,ho;,n o, prl=t• ho,ooo ond dod,<:<i\o lhe u,o lherool !or oil p·.Jbl,c purpose,_. r.c•'. incon•lot""\ 1<ith lho u90 \tlereol for the FUhlic highwoy P"'l>ooeo. ood olso tt,, ri.;1,l \: 01: nocu,ory olopH for cul, ood 1111~ upon tho loto ohc~n lhoroon In the orl;,n~' g,-od,ng of ooid ,troot, <lfl<I o-ue,. o"d hirther ded,cote \o Uie u,o of \he pu~lic o' on,omont, 'll'ld lroc1a shown o,n thl• plat t.:,r all pJblic purpo•e• o, Indicated th~•ec, ... irc'..,J; y bu\ not 1;,,.;\ed I.¢ par~•. op~ ,po~•. u\,l;tie, and droino9e unle., ,uch .,,,,emel>\, o· '.ra0, ore ,poclHcally lcenl;tied"" trti• pla\ a• boin9 cleol~Q\ed or oon,oyed \Q a p.,,u;,," c·.; o\ho< lhon \ho public, in ~hlch coH wo do horoby dedlcote stJ;h strut•, eosomd.!<. or :•oc:, lo tho pero,>n Of enuty and ior tho purpo,o ,totoO Furlher, tho undenigned u~,,-.H~ c•r II,, lond horob)' ,ubdlvl<!e<: wa,w for lhom,eivH, lhelr heh and o,,1;in1 ond or,y p•r,on o<_ e"tity <Jori•'"~ Ut'e from the und,~igneQ, ony ond oil cloimo for domo~e• 011<>i<1ol·.t\r-·g ~cu·,'.,:·.,\s wc~e,u,c, ond o""l'lf'• which moy b• oeco,lon<d b~ the eo\obil,hmen!.".'ti~n,tr~;(;e<1,, mo,r,\ooonco o( roods ondjc, ~o:noge ,y,,tom, wil>m \hi, ,ubd,vl,10.~:·'other thoa re~ulli".g h"<,m iMd•quote mointenosce by King County rur\her. t~ usder,lg·1cO c•· c•, c' lond hereby •~b~ivldod <1g••• !or them,61vH, their Min end o .. lg~:0; lo lndi':"l!',il:'.. one 'o d King C~unty. •I• wtcesse>ro onrj osoigno. hormle,. from any rjarr,<IQo, ,r,cludlog "") .~csl, a' Colon.,, clol'T\eO by ~or,o,,s wlth;n e>r ~iH,out ,.,i, subdiv(;;o,. to tose be•~ c~u,;d·l~, o,t.,o1iMS a! t~e g·o,md ,ur!aco, vo9otot1on, dro,nog•. or ,urfoc•\<>r subs~!oce ~otci-.,rc,,, ~:_i:ir;u:~;,i;l~~di.i;i:~::/ \,,',:':b~::."':~ ~:::~~~;:~~' ;;:n~:1;:• c~~.:~:t.::' ';,~~~" ~ing Counly. ;t, •ucusso,s o, o"i~n,. 1,0~, l'ol::ilily for do,r,090,, ind';ding the ,c,,:;,1 o,f,n,o. re,clt1ng ''.' ."'.ho'• o, ,n po,t from lho nogllc;~nco of, .~ln.g Goun'r,.:.,_ i\s s .. , ,,,,-co,, o;;;gos. This ,ubd,-,«o". ddicot,on, •oi,or o( :lo,m, on~,ogft~,;,~ 1o ·~~4 w;•n lh• free c0<1unt ord irl occocdonco w:\h tho d .. ;,•f'ot ,old ow~6;~,. :: ··· ... '°'"PfLi: ' '" ·· .. ACKMAN."~' AS !,"01,'J~UALY) , /, JI{ /h;,tft® I ~"'~ l"1 .... BUI-:~~'·: .. _·. - HARRll n lA ~~1""-~. WIF( ROY " A .. A~, I !l.O.NJ ACKNOWLEDGEMENT: " ·o,,:.~d M·•r-"' ·· . .,.,., . .-.,,,-. s.,, •• ,. ., 'f ' f,;. -u..: ' . No,,,):'Pvl)~c 4wNtf ~ ~- ··::. TIiie ~r,;, 'Piii+ l~--- ···"4y ~ppv;r,lmei,\ o,pire• 'l•'-"L ~~~~·\y0 ~/~ 0 'K'~; / ... ~ ··-·-.·.··.··.··.·.· ._._._/ \··· ... :·~~-tf.r H. Sfuni h ·~'f. 'cortif)' that knc~ o, OoV& !Oti,to:to,y .,,don:• tfi.ot_Q_nci ;k,.mt5 (, P ~,c sign..d \his ins\'1.'m~nl, on oa.th··,tot,a the\ (he/si.o)' was ~Ythori.:ed to e"cu<e Ille m,trum&nt o,d ...O~,i;,.,iodged ;1 o~· t~• v'ice Pt'."Or.:idr n t; 9"4 A~L-',i.Gtl'U1.Q_c·u uf IU:121)1,:p~i,o m,,-tw,j ~::0. 0'LO!'.,\--':,_Jku\l::. ------_ --------L t.,, lr•e Md <o!<,n\tcy Oct ol ·.,)~I>. poc\y t+-fhe .. ~~,·.'·on~ pu,µo••• rnen\iune<! ,n \', ,.,,\•.me•' ~... ii·~1~ .f"::'A,.-dh 1'8, (993 --·----- Signo\..J,e ol '. Ho\o,y Public~~ f,rt., Th..;j:'Wf'...dl./__ ,l)tle~bj /?obli'.e ";·~ppcmlm•t;1' expires 5·10·9't s:,)~, .,..,,,,i;,;,;>·\.... · .. Co,1h ol ' ·· ', §:;;~:·::)~~~~\::::::·;;~~::&,;, ,, :.:.:~·:~. ~-7 ·.··i,-.,,._.?'·~ ,;;;"'''.(0,1 ol '"' ie,1, ,:,;. I>• u,u oO<J ~"'f""' mool,onod" lh1 hofrum<o' ·2,,"1 · ~:~:~~u~eu~~') __ ;?gc-£3:.~~·~~~t-,-------~ ~ ' '- ,.,Y ~°'""'"''"' ,,o,,•• --=-='c:·a-._ ___ -_---- EASEMENT PROVISIONS A>I EASEMENT IS HEREBY RESER\IEC FOR AND GRANTED TD puJ-\-.5.0uNc PO~~·J\ND ',' L•GHT COMP.O.NY, U.S. M:ST COMMUNICAllc.>NS, WASHINGTON ' ::. '", NATIJRAL CA$ COMPANY, T.C.I. CAilLE ITL£v:SlON COMPANY, AND 1~Elf?:\l£SPECTIV£ ·::. ·:-.. SUCCESSORS AND ASSIO,NS. u~·D(R ANO UPON Tl-l[ [~1'.['llle-R TEN FEET PAA:I\LLE. Wllr< . "",N,0 .o.o,rn-tlHG mE STllEH FRONTAGE OF .O.LL LCTS IN" \>Mia,. TO INSTALL L'(IY, C0~STRUCT, AHffW, OP[R.0.T[ AND MAiNTAIN UNDERCi}fCUtJD Pill[, CONDUITS, -C~B.ES M.tO'Vtll!l WITH N(C(SS.o.RY fACIUT\[S mo OTHER [Ql!<P .. ENT Fo/l',:111E PURP.i:>SE:Of. •· SE~VIN~•J1-IIS SUBDIVISION AND OTliER PIIOP[RH Wll'll:UECTl<IC, -:Ct'!cF!:ONE.':A~D''., •',• .• U'1UTY st'.R.\'lCE ToGET\iER WIJH fHE RIGl1T TO ENITR UP~ TtlE LOTS'/.T'.'A[L ll"i!S ··,, fO"! THE PU\ll<_Qst: HEREIM STATED. Tl-lESE EASEMENTS £NfE.'R~\I UPON FOR lHESE ·, ,. • ·~~R~l~1~S ::~E~\~S~e~Ei'Rt~s~~:S~O~S J0f~;iJ~h ~~R~fi:~;o~/lF;t<~l~~~1oh'E ust, OR CABLE.' TELEIIIS1CN SIJALL BE PLACED UP.ON' ANi \.o'Ts ,UNU:S.S, THE SA~E ~Al.I. Ht·_·LiNDt.RGROOND OR IN CONDUIT ATIACt1EC T/;I A BUILDING. A~SO. EAilt\ LOT SeiM.L flt SUDJECT.",TO AN EASE~(Nl i.5 FUT IN \\!lf)TH, PARAU.H Wlnf',AND Al'/j~CfJ,IT ro ' .... :·,ALL INTE~!!)R LCT LINlS FOR THE PURPOSE .r;F UTIUTIES ANO ORAl".0.::"..f-' GE/'lERAL NOTES: I·:· :BL){1'ii1NG SFTllAC(S ANO NAT\\/[ Gl<Own--1 PR0TECTi0j'~SElA[t,JT·s R[SIOE/ITIAL . BU'LOING FCUNDATICNS •RE PR{lfj1BITEO BE'l'ti}'ID TJ.IE B>,J1~0ING .'sETEACI';: clNES, \\<INN TclE 1cc Y"..AR FLOOD PLAINS (IF APPlfCABLE). Af)(.l•',W:TM!N 11-IE NJ',111'£ GllOo\'111 PRCT(CUJN EASE .. (NTS (~<?.PE) AS S/10.WN. )EDICA110N Of AN HGf'E CON\IEYS.:~o··rHt PUBUC··;;_ .. t;lt,NEFICIAL INlC.i::~ST !N rnr; L.O.NC, WITlilN THE EASE~ENT. Ti:f.$ INTER£$')", INCLUDES ·'!HE. PRES~~I/A mm (J,' NAT\VE \IEG[T.o.110,,.' >QR ALL P\.1:1:POSES 'HAl·jjE/IITlT NE t°'l!fl(.fC"'HEALTH SAFETY lcNO WLFARE. l"CLUDING co ... mti~ OF SlRFACE'.WATER,{',NO E~OSICH, MI\INTENANCE or s: OPr ~T.O.l!I.ITl', \115'.J~L AHD A\JB~L 8UFFER1Ntl .. AJ«i-·P.ROTECTION OF PLANT ANO A'll~Al HABITAT. 11,f NGPE !Mi>OS(S UPON AL[··:PRE~IH A"O FUTURE OWNERS AND O~Cl'PIERS Of LANO SL'!lJECT JO 'TH~ EASE~ENT 'oBuGATIO~. ENfCRCElcBLE JN Tl,[ 8EHALF Of" THC PIJ8L',; BY TH( ~ING"t\1.~~TY TO LEAVE '!.JDISTL'fi:LIUJ All TREES AND O'HER l'EGDA'TlCN "1THON TME EA'S.E .. EW. lH[ ~GETAT'ON V.,lHIN TI,[ [A5[M[~T MAY NO! ·.BE Ct/.". PRU"<:0, CO's'f.'.;fC, BY f'IL~. ia.E-1,<0\IED OR DAMAGEC 'MUIOUT fXPRESS P[.s .. 1Ss10tJ rRq., KltJG cour:TY,', \IHICh PCRM1S,;i0N I.IUST 8( O~[AINcO !N IIR'IING f{ibM ll·( ilf.lG.CJ,JNlY L~(iD."5C • D'IISWN OR ITS SUCCE?i~CR .O.GENCY · · 8UORE 8(G1UJING AclO oURIN.(, THC cc~~S!,,._9~'··/(>J~·-,Cl<i101N\;, BJ,L~N•; ca"srnuc11cN. ·JR OTHER D('>'f;LO?M[NT ACTMTY oi,:,,I, LCT•.S'JBaC'0 ·o THC NGPF ~~~~~~~tt~N~.i\~\~~;iti;;~~t~E~RE:r~ "'r;Q:·;:~E t\~. 2[n~~·~~0:!t COUNTY. Ai.L BV1LC-<NG o6~sPOVTS. ~·~·OllN(; OR.<t 0 l~S A"~ DkAIN~\Ro .. ALL IMFERVIOU~ SURr.O.CES sue~ AS"·.,,~nos AND ·nl).111[1'/~~ SH~-i\E COll.~ECTE~ TC T,iE A~P.RCVH FCRMAl,'FNT 510RlA DR'~il'! OUTL[T AS·.!,HO~,._(l(/ Tl.t[ APPR$)\IE0 CCNSlJll'CTIOtv Ll~AWIIGS P ~07 oo 1-ou-'MTH K1~c. .. couu'f.T' u,;i.,o us[ .mv.s10·, TH.IS, f').,AN S>iALL",tj[ SU8~1TT[lf .. _M IK 11-)_ A''l'LK:A !ION ~~·~·s;~~c~ft!~~-:~~J.".E;~ii~c:'~~c~~r.-.i;L ;;;f,1~1t~r,tit5c\1~,~ /..PPROVA[ ..... ,~TE.~·~t,c[ Of.All PRIVAIT··.),RAIN~:;f'·.{~sf[;'~IH;·-.S\JCWN OtJ THIS PLAT SHALL SE ~ RESP0f;S\81l,il:Y CF /I.LL tf.>TS CERIV,N/i BENEfl\' f'WM SAID ~ASf"t.<ENTS tlN~l~~\1~t'_;;:'PFHN1;:_r; COf<SrnynoN DR~'f'l~.~ '.'L~~, 0N FILE \\llH KING COUNIY IND ·,;~,.~AL STO~M C~A1N ;'n.rso•JTS ·• .. s:c ~~1·,A II LY JWNlC ANIJ MAINTAINft, SY Th(",pT ,:;\W...E~ ' ' l_MS 34 ·~.H~··~J~rl 42 . ..:~·.;t'MTHt. ~E 'ILL BOU'/JARY (PRIOS: FILL AREA) AN[; REv\.'IHl 'AD.:il'n.?_NAL GDlt~H~Ac SIUDll.S PHICll ID ··IL ISSIJAN~[ CF RUILD'NG PCRMITS ./nmi,;:-:e:i·i::?.on~c :{(\_Al~$ ~~£ '~SQUIRED FOR LOTS 32 "CHRO~Gr 34 ~(~.o~ rn0/iikJE SIOE~~~K EASCMENT SIIDWN ON 111( FACE or n11s Pl.AT S HERE8'(.0ECICATEC-·w mE FU6LIC. ™E 10.00 FOOT MOE UTILITY EASD.4ENl A5 .. , SHQ\\'l r:\r,t :HE FACE Of;, THIS PlA T ,$ H:'.RESY DEDIC~ TtC 'OR Tl-;( PURPUSES S.-\OWN HEH EON .IJ6f U'fos-: SHEET 5 OF 5 • ;; ,, '" •-="Id .MIU>UJP""90 pl,f~ ( N3''Je MO<l~3W·S!f'J(N,{W)I os-:v; JJil -tv2 n,;,miv,;1 'N il13e!Ol:I ·:m1 '~Nll:l33N!~tB H-:)3;_ ' 'J'Jd ~11lfi,:,011qa.iy UC~ ~ (1'·· .. . ' 1z- 'l" .v,t "i!''' ' H [ CT10HSIIIIU. '"' I • C • • • " a 0 w 0 z I i 8 .. f Q " I ' ~ " ' ~ ~ ~ lottraMs· ·~·1nk,o~~~ i J ~ ' t 0 < • ~ " .§ ,t j o~{ E .£ £ ~ " '5 " " (D . ~ I I · • I .. I r t j '· ' I \ '\ t I ~ ,. I I 11-,_, L4 I .? . ' ' ,-.-,'l->i:~"'; ;--. ·i ! i ! ,, .. ,.,.,,,,,, --- ·- I I~ I I ! ., ~i !i' _, "- I ·~ r; I I / ,., ,.~ .... ·.-, ! ·1 ~!! I 'j i . ··'":," er'/,;', ,I i f I ,; IVOfl.N:1.L:30 J'Vi:!'015' I 1DP'l:iJ I 1· \ .r .. / j IP ,/,, ON l33HS CEl'.: oO·OOJ-0 '.>iillpr«n H0~ \'i'1 :,1, j I ' ' ! CJ z ·:, 0 fl:'. !_') ., '-:.i , .. , 2.'. ~ 0 z 1,· .. I I ··. } \. i i . "'; L ·QN S3Hs :33$1 oo oot-6 it1E; 3t~1i i~::uVN ,' I i .; .;t , j·, 'i I 1 i ,, <-;; u-: u ' ,, ' h "'I I l711 al z, ... w "'I e1 ~! ' = ' J ~I 2; w, ,J c.:· 0 "'' 0. 2 ''-'N .i :~-~H'! J3S ;;: £!•9 '<;';,';; .1Nl"IH:ll7't". " ! , ./' .,,/ ;, ,i L ! ' l I I I j l I j b J.;aRH(; .3i3ti .i...'il:iNJ..$ HJ.*>~f "1$ 28 " 29 '' f 27 ' F' ?6 \ ;,_ __ _Jle.·------ f' l i.: 1· ' i . I ,, IM 1¥! I : i;; . 'ii\~ j__., I I \ \. •. \ \ l ·1· / I II I. _,: oo:I! / ~,· o. ~ «i .. I ~ ~ t "1• ~· ~ :;; i5 '" I;, ~ ' ~ ' ' ., ., i ,'·. L . : I :,.l' ' I -· "':'1:;,.,..,~ ,c,,,;:c.c .. so. >LJ'•"'' 'A·<~ ~1 .. -"'' ,.,.., ~---~-<".:-} <:.c:?, ··:?'.:~,± I h---c:--- I SQlJ.ED Cc~RB TY?£ ROADW',.,. , n,z -.-. -·------~,..., TYPICAL D ~-'5:£ 170 $7 ·· ... El'.EW'O~ TA~ •; 8 ----·-. $7A ~i~ ,a sc, """ _j. t.", LlJ · "'·'·"'' ·.c · ' ·-·· "'--·~ '-" .. '""'""" --_1-___ AlM,iw.:.e;:.~~": __ ..::!'.'l'iJ .. ~\l, ~ ~z,: "' " ~~~t, ,=-~;-;: •Wl -<.:!' ---,;;;,,-i ~,.,;.._, •<'<' ·' -~ ,.;:,,:., -~:~;.:"''{ ,~, "''·""" PROFILE· ..1§::_~P..M Oflt.Ar_;.,• "''' i/ ;l' t Sl'!f'. SHEETS '1 & & FOfl 16" STOfUtl CRAIN PLAN J i?m+" 4Cii --···--.· .. ·.-. ·1 ·"' . : ·.. l . :: I -~, 1:~"LJLPAftP_f:J._ i,,Q£ll;6. -_...._, '":""'"""'" n ~' l!J-J(}l"U-,1'.~f;_~ tl-J:1"±9' Cf'fA{t,: e,rm/MSl!f '_gc.,..,!;;.l.~ _..,, CON"Cf(l:Hlc' D~'ft.:'WAI' DFI'f'Afi, 7-~~. T ...... 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' . ' .. I . ... ..... ..,, .......... ~· . . . .. ... : '! I ... .. . ·'· 'I • • •• k~ey :~:.;CO.U~T ·· 1:CC>Kll)O $ 2CXJtJ- C?227 ,. ;·® :st.Pb.> i -:-: :_, ~u1ti'l5 .wrA.'-· :~:: . ·.. . ·, .. , . . . . . A al\ :~: 160.1 } . ~ (..) a: 23 2 -SE 16~ I .::37 8 9 10 6 5 4 3 /O~tl.Jt SE 170 S ------------~--100-- V M. W. Lotto I t \ I~ \ . .., • I T. I • / .. ,.- Department of Community & Economic Dev elopm e nt A lex P ietsch, Administrator Data/GIS Analys is Services Ad riana John son, Patrick Rodui n P:·oduced by C ity of Reo1:c1, (cl 2008. the City of Renton a ll rights reserved i,o warranties of any so11. including but not limited to accurncy. fitness or merchantability, accomp,my this product. Benson Heights Short Plat LUA08-089 Legend 2 Ft co nt our Benson Heig hts Short Plat Ren ton Parce ls 0 Vicinity October 20, 2008 N 20 40 80 $ Feet 1 :800 F,,o Name: H \LDNSP'.GIS rro1P.c.ts\v1cinity mapsunxds\ be11so11_ilo1~l1ts_short_plat LUA08 089.mxd Fru:.Ju(e~ Loy City d Rerilt:n (c) 2~08. t·ie Citv ::/ Re1tcn all r gh ts reserv,sd ~,o \..varr;;1t es o f anY scrt inc:ludir c; t·u t 101 :rn ite(i to ar;:...vacy :,:ress 01 rne~chan ta b :hty. acco·-r pany this i:-rodu::t Legend Benson Heights Short Plat LUAOB-089 Topography 2 Ft contour c=lsenson Heights Sh ort Pia! l:'J C ity Limit s Renton Parcels 0 Octobe r 20 , 2008 N 2 5 50 100 $ Feet 1:1000 r Is NaTe H.\ED"SP'GIS _efOJeC'.S'.v.c,n,ty r1aps·mxds'. ~t:rsi:.n ,01:;"lts __ s 10"".'. __ plat __ LUAOS_OB-9_8:..: 11 .mxd ~ ~~ ~~ ~i I(') ~ ~ z ~ M E- ~ = R-8 S 23rd S1 R-8 R-8 R-8 31st St ~ < .:I ! ZONING PW TECH:-I ICAL S ERVICES 07/15108 G4-20 T23N RSE W 1/2 R-8 R-8 R-8 S~ 166tt1 SI w "' w ! 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T23N R5 E E5 ,r ESd 11;7 10 T23N RSE 11 T23N RSE E4 8T23N R5E · 9 T23N RSE 325' 8 10 Fi-J 27 F 1\-"J n:r ~3 · 326 328 F4 · 8r4 F 5 _l:f Gf L ·-F7 3 7 0 4 T23N R4E \ 13 T23N R4E 18 T23N R5E , 17 T23N RSE 16 T23N RSE .. , 15 T23N RS E 14 T23N R5E 334 \335 336 (. 337 I 371 8 15 [,__ ___ 1 816 ' G1 G2 3 T23N R4E 24 T2 3N R4E G3 '·G4 , 19 T23N RSE 20 T23 N RSE . G,:; -UOO :--'/--e 1~ 1 21 T23 N RS~ 22 T23~ R5E i 23 T 23N ft5E 2, ~44 349 H 1 ~~Hl2 ' I 6 T23N R4E 25 T23 N R4E 5p6 .J I: J1 607 J2 f22N R4E 1 T22N R4E RESIDENTIAL 0 (RC} Resource Conserv ation g (R-1 ) Residential 1 du/ac a (R-4) Residential 4 du/ac [0 (R-8) Residential 8 du/ac 600 H3 30 T23N RSE 603 ----·---., / 13 31 T23 N R5E ~ (RMH) Res1den t1al Manufactured Homes l_P-10 , (R-10) Residential 10 du.lac E:GJ (R-1 4) Re sidentia l 14 du.lac ~ (RM-F) Residential Multi-Family J••·· I (RM-T) Residential Multi-Family Trad itional l~•-u I (RM-U) Re s1dent1al Multi-Fam ily Urban Center 60 1 H4 29 T23N RSE 604 605 ! 825 ' . ' ' 14 IS-,, 10 16 32 T23N R5E 33 T23N RSE 34 T23N RSE 610 632 J5 J6 4 T22N R5E 3 T 22N R5E M IXED USE CENTERS cv J (CV) Center Village uc-••I (UC-N1 ) Urban Cente r -North 1 ,uc-,21 (UC -N2) Urban Center -North 2 ~ (CD) Cente r Dow ntown COMMERCIAL H7 26 T23N RSE 826 8 17 3 5 T23N R 5E 3E 833 8 J7 '" t1 ,01 2 T22N RSE 1 T 2 INDUSTRIAL [i;J (IL) Industrial • Light ~ (IM) lndustnal -Medium ~ (IH} Industrial • Heavy ----Re nlo n City Umils ~ (COR) Commercial/Office/Residential ~ (CA) Commerc ial Arterial [ill (CO) Commercial Office 0 (CN} Commerc ial Neighborhood ---·-Adj acen t City Llmit.s KROLL PAGE PAGE# INDEX SC.CT/lOW"l'RN,,GC. ~, ~1 BENSON HEIGHTS SHORT PLAT FOR CRUZ L -'~~~~:.1 .,J I I .. • «> I I ' ' ,i f II I I . • , • ' t I I I I I I ' II I LD ENG INEERING, LLC u,,,I() ()(',U<PW(Wl a Q[QJtONC.lil SDl~1 ,1r, '""----d ... i:. !iiw"-• roa. s-1ii."" 1H11a2 ;,,""" X4 411."'60 4.,_. ~ 1()9.7771. z tsi s s; z=_ .-:: r- "-•.c I "- (, I u Benson Heights Short Plat jC~11Coun1y COMMENT S: Lyon's Appeal of L08S0007 The information included on this map has been comp County makes no representations 0< warranties, expr, This document is not intended for use as a su rvey pro damages including, but not limited to, lost revenues o, lhis map 0< information on this map is prohibited excer Dale: 10/1512008 Source: King County iMAP -Pr ,ange without nottCe. King ie use of such information. ocidenlal, 0< consequential id on lhis map. Any sale of ~ King County <t z . ,w 11+00 :5S. E. <t z . ~w ,·-. "' ...... <( ---~'-''---,L:__ -. -,,.;_-' <( f- 0 _J w U1 <O t') t') I 1 I I I (TO 1EMAIN) I I co f- 0 _J 170TH STREET .c: ~~'.ffe U1 ..;- 0 If) N ;:fl!~ 11 I, : I . . . _: (_Ji 11: I ..-_ (i < ·-r'"' •\;-1, : f-. ·' ·:(0 fF :1 : _J 1[] ... 424.0 ~ U1 If) co <O N \ ., ... ..•••.••. _._·._·········· ..•. · 12~00 ., 3:1 3:: ;;: 0 ·a::~. 2 ,-. (_) 1: 11 111 FF -423.5 r, 'co ,5 L.,! --->..-' C, I N (0 r--n_ I w ::::, a= U1 • u I co f- I f-..;-u . Q_::::, 0 nx 2 0 r--: w u N ~CJ _J w U1 > :-'~ ILII o·- 2 N CL w 2 0:: ~ u ii::~-If:> 0, (•-..j ~ ;-:.... 'sr f _~ ~ I VJ ......:i P-< z 0 F <( u, IE=417.221l?'E Tsr ::r:: E-< m 0 I I I I ' 1 • I I I 3: 0 0:: •. 0 8i! .·· · .. -. 3""-. :::> t-0:: o st:Cl .,........ .. . 0. X Q_ w Cl ~ ± <Ill\~."!+~:..----------------====="'~-- .. ,+f1:c· J,_ ...... -.:t10:_1 ... -A-S_P ... ;AL T TAPER .·::•,, · __ · FIELD ADJUST GRADES TO DIRECT ROAD -. '· , ' DRAINAGE TO ROAD GUTTER LINE &:0>/'. 4 1 ~' ,CONCRETE RAMP (SEE DETAIL) TO ASPHALT TAPER 0 FF ... 423.5 © LJ CL n w co U1 w f-o:) _J N LC) 0 <O I';;, ~II _J N 3' _WALK (TYP) I • 12" AREA DRAIN#1 (SEE DETAIL R!~,;1= 4-20. SC, iE 8" = ·117.83 .ARE:1\ TC .L.IN iN T>!E V!~=:NITY er=-ARE/\ DRNI~ # CONNECT TO EX 4" DRAIN & REROUTE TO EX DITCH <i: 1 1 r==:4=22=.o=-:;:-_ ==~=· 1 \ 42 ~ 5 ./ . .• · ~·-=:, " .·.·,· · 422s [iV I< x_J ___ 421 .. ·---420:--.. ~-::=:=~ -::~ L~d"1 ------.. ____ __...._ ~ --,·-~ --•' 419 -7-'..,,,.;,? ~. IE 41832~ _J _ 30LF a"PVC / f( -'I () I -•• '[::'1Y1ib1+ t=, Fred Kaufman -Benson Hts Stipulation.doc From: To: Date: Subject: Mr. Examiner, "Ann Nielsen" <asnielsen@seanet.com> Fkaufman@ci.renton.wa.us 11/3/2008 12:12:06 PM Benson Hts Stipulation.doc attached please find the proposed stipulation and order for your review. all the parties will be present tomorrow morning at 9 for the continuation of the hearing. We anticipate that this stipulation will be signed off by all the parties, but if it fails, then we will proceed with the continuation of the hearing. CC: mark.follner@metrokc.gov; RTimmons@ci.renton.wa.us; rob1lyon@peoplepc.com; leonardo_difrancesco_seattle@yahoo.com Page 1 • Fred Kaufman -Re: Benson Hts_Stir,lJlati<Jri:_doc __ From: To: Subject: Fred Kaufman Ann Nielsen Re: Benson Hts Stipulation.doc All correspondence with this office regarding pending land use applications must be part of the public record. Your email and this response will be placed in the official file. Please refrain from replying to this email as that would generate another series of printouts and replies. »> "Ann Nielsen" <asnielsen@seanet.com> 11/03/08 12:11 PM»> Mr. Examiner, attached please find the proposed stipulation and order for your review. all the parties will be present tomorrow morning at 9 for the continuation of the hearing. We anticipate that this stipulation will be signed off by all the parties, but if it fails, then we will proceed with the continuation of the hearing. Page 1 Hearing Examiner City of Renton 1055 South Grady Way Renton, WA 98057 Robert B. Lyon 10817 S.E. 170th St. Renton, Washington 98055 Ph# 425-255-0395 File Name: Benson Heights Short Plat August 13, 2008 CITY OF REN'fON AUG I 4 2008 11:30 J)I" RECEiVEd ~ l,(,l CITY CLERK'S OFFICE File No.: L08S0007 I am requesting an Appeal/Reconsideration on the following items: I. In my letter to King County dated March 15, 2008 (copy enclosed); I requested a copy of the plans with revisions to review prior to a final decision on this Short Plat application. To date I have not received that information. On August 13, 2008 I met with Rocale Timmons, Associate Planner City of Renton and requested a copy of the drainage revision made June 25, 2008. She indicated that she did not have a copy of drainage plans or revisions. She requested that I contact King County for these items. I contacted Fereshteh Dehkordi, Project Manager ODES, who referred me to Curt Foster Sr., Engineer DOES who indicated that I should talk with Mark Fullmer, Preliminary Engineer Review DOES. I told Curt Foster that due to the uncertainty of who was responsible to provide this information in the transitional process between King County and the City of Renton I would request an Appeal/ Reconsideration. I have also enclosed my letters to King County dated March 12 and 18, 2008, regarding these revisions. 2. I am also requesting clarification to Section F, 1 Lot Pattern and Density. Is this Short Plat proposed for 7 or 8 units? Thank You cc.: King County Department of Development and Environmental Services Land Use Services Division 900 Oakesdale A venue Southwest Renton, Washington 98057-5212 TO: Mark Follmer, PE Engineering Review RE: Cruz Short Plat File No. L08S0007 Dear Mark: March 15, 2008 Thank you for your quick response to my phone call regarding my existing drain outlet, which would end under the proposed concrete patio pad of Lot #3 Cruz Short Plat. You indicated that you had spoken with Leonard Difrancesco the Plat Engineer about this item and that he has agreed that the connection of my drainage line to the new drainage system would be noted on the plans as a condition of the Cruz Short Plat approval. You also said that there would be an extended asphalt ramp installed from the east end of the sidewalk, but that I would be responsible for the asphalt driveway apron to my property. I am requesting a copy of the plans with the revisions, to review prior to a final decision on the Cruz Short Plat application. Thank You, :f!_/d,~ Robert B. Lyon 10817 S.E. 170 th. St. Renton, Washington 98055 Ph# 425-255-0395 • King County Department of Development and Environmental Services Land Use Services Division 900 Oakesdale Avenue Southwest Renton, Washington 98057-5212 Robert B. Lyon I 0817 S.E. 170th Street Renton, Washington 98055 Ph # 425-255-0395 TO: Fereshteh Dehkordi DOES Project Manager RE: Cruz Short Plat File No.L08S0007 March 12, 2008 This is a follow-up Jetter to the hand written questions that I gave to Lanny Henoch, on March 11, 2008. I) Where do I re-direct the outlet ofmy current drain line? 2) Approximately 90% of the drainage now flowing to the proposed Area Drain #1, enters from the existing Right of Way on S.E. l 70'h St. Is this the accepted policy of King County and the City of Renton, to allow drainage from the existing Right of Way, back into a private drain line? 3) I noted on March 11, 2008, that building a fence on the property line would obstruct the flow to Area Drain # 1. As of March I, 2008 the Right ·of Way on S.E. 170'h Street has now been annexed to the City of Renton and the drainage from the Right of Way impacts the drainage facilities proposed by King County Land Use Service Division on the Cruz Short Plat. I am requesting in writing the procedures King County wants me to take in addressing this drainage issue with the City of Renton. Give me a call ( 425)255-0395 if you wish to schedule a meeting. Sincerely, .~t,r:f- King County Department of Development and Environmental Services Land Use Services Division 900 Oakesdale A venue Southwest Renton, Washington 98057-5212 TO: Mark Follmer, PE Engineering Review RE: Cruz Short Plat File No. L08S0007 Dear Mark: March 18, 2008 Leonard Difrancesco (Plat Engineer) came to talk to me on March 17, 2008 and proposed a tight line to my footing drain for property drainage. At that time I mentioned to him that a tight line would not collect all the necessary drainage. I have drawn up a plan to collect this drainage (shown on attached drawing), which includes 65 feet of 4 inch perforated pipe with drainage rock. As there is no information as to who is responsible to maintain the drainage outlet to private property.(South property line between Lots 2&3) which would include the right to enter the property, the cutting of heavy grass, and the removal a considerable volume of maple leaves each fall (see plans for location of five maple trees). I am requesting that the proposed drainage on S.E. l 70'h Street be extended to the east property line of Short Plat with a catch basin, and that my drain enter the drainage system at the right-of-way on S.E. l 70'h Street. Please give me a call to schedule a meeting to review and discuss any of the issues addressed in this Jetter. · cc: Leonard Difrancesco u ~)fl~ obert B. Lyon I 0817 S.E. 170'h St. Renton, Washington 98055 Ph# 425-255-0395 / -. ./ t,4.,,.r·' D 423,0 ' SHE:) (}".! F-' ,, ~' "~ .. 2() 0 ~--~ 10 I (, 20 ~ ( IN Inch 'C·~,'i\'.Y C} +~M :$]~ + ,~'.2;, :·t- CITY OF RENTON City Clerk Division 1055 South Grady Way Renton, WA 98057 425-430-6510 • Receipt ; ~ • l....., 1182 Date o-1Y-08 D Cash D Copy fee D Notary Service D Check No. '?Appeal Fee D __________ _ Description: ..Jyyju>,J fu fu lk-v,.s.1,v-. \-\:.,. '\\A.J) ~ p Jr LOE sooo 7 Funds Received From: Name Address City/Zip .,c,..:.;..;-~......,_ .,.,...,. ......... ,,,.,._ ... "'''~-.,,. ~~t M4Df\. \0 '?I, ,:,~ 1,0" '~~ ~~ \.JA °I ~-0 95" I Amount $ I S.oo . &-4~ City Staff Signature Hearing Examiner City of Renton 1055 South Grady Way Renton, WA 98057 Robert Lyon 10817 S.E. 170th St. Renton, WA 98055 Ph# 425-255-0395 CITY OF RENTON AUG 15 2008 RECEIVED CITY CLERK'S OFFICE l/t111d -:De(r·ve//"ecl August 14, 2008 File Name: Benson Heights Short Plat File No. L08S0007 This is additional information regarding Item #2 in my letter dated August 13, 2008. This Report and Decision on Short Subdivision File No. L08S0007 was the first notice that I received that eight units were proposed for this Short Plat. My main concern is parking, as the current vehicle parking on the south side of S.E. 170th St. regularly impacts our driveway entrance and mail box. Also this Short Plat Plans indicate the removal of approximately 1050 sq. ft. of asphalt parking area on Lots A&B. Has King County addressed this parking issue, prior to allowing an eighth unit on this Short Plat? Thank You aq;;1~ Robert B. Lyon C!C: King County, Washington Technical Information Report For: BENSON HEIGHT SHORT PLAT PROPOSED RESIDENTIAL DEVELOPMENT Location: 10801 SE 170TH ST RENTON, WA 98055 Tax Parcel #: 2923059026 King CO File#: A07PF004 LD Engineering, LLC Seattle, Washington 98102 ' ' ll.itc Dl·,fript1on Prepared by: Leonard Difrancesco, PE December 15, 2007 Revisions: January 31, 2008 BENSON HEIGHTS FLAT 2-TIR 2/3/200B PAGE 1 OF' 1 7 King County, Washington Technical Information Report For: BENSON HEIGHT SHORT PLAT PROPOSED RESIDENTIAL DEVELOPMENT Location: 10801 SE 170TH ST RENTON, WA 98055 Tax Parcel#: 2923059026 King CO File#: A07PF004 LD Engineering, LLC Seattle, Washington 98102 ' ' f 't ,1 /''S' Date Description , j~E-XP-1R_.E_S_3-/S-·1/_0_8 ___ ,..l { Prepared by: Leonard Difrancesco, PE December 15, 2007 Revisions: January 31, 2008 BENSON HEIGHTS PLAT 2-Tl R 2/3/2008 ' ' PAGE l OF 1 7 TABLE OF CONTENTS Technical Information Report 1. Project Overview 2. Conditions and Requirements Summary 3. Off-site Analysis 4. Flow Control and Water Quality Facility Analysis and Design 5. Conveyance Systems Analysis and Design 6. Special Reports and Studies 7. Other Permits 8. CSWPPP Analysis and Design 9. Bond Quantities, Facility Summaries and Declaration of Covenant 10. Operations and Maintenance Manual Appendix A -Maps, Figures & Tables Appendix B -Flow Control Exemption Calculations Assuming Full Drainage Review Appendix C -Conveyance Capacity Calculations Appendix D -Upstream Offsite Flow Calculations Appendix E -Geotechnical Report BENSON HEIGHTS PLAT 2-TIR 2/3/2009 PAGE 2 OF 1 7 1. PROJECT OVERVIEW The project site (see the Appendix, Site Vicinity Map) information is as follows: PARCEL A: 10801 SE 170th St, Renton, WA 98055 KING CO Parcel 2923059026 (R-18) The site is located in: A PORTION OF NW 1/4 OF THE SE 1/4 OF SECTION 29-23-5 KING COUNTY, WASHINGTON The site is located within the urban growih area of unincorporated King County of the Duwamish- Green River Watershed and located just downgrade of the ridge line that defines the drainage basin in the Benson Hill vicinity. The Appendix, USGS Site Location Map shows the site in relation to the ridgeline and other features. The project proposes a 5-lot residential development on a 0.394-acre property, shown in the Appendix A Exhibit, "Area Map: Benson Heights Plat". The site is currently developed with a duplex and associated asphalt parking area and concrete drives. The remainder of the site is lawn. The existing duplex will remain and a proposed lot line will serve to divide the existing duplex into two "stand-alone" units each on their own lots (Lots A & B) for the purpose of being able to sell each duplex unit independently. A 2-unit condo dwelling (Lot 1) and two single family dwellings (Lots 2 & 3) are proposed, east of the existing duplex. Recreation space is proposed west of the existing duplex. The duplex will continue to access from SE 1701 h Street via two existing concrete driveways, while three (3) proposed driveways will provide access to Lots 1-3 from SE 1701h Street. The asphalt area indicated by the hatching in the Appendix A Exhibit, "Area Map: Benson Heights Plat" will be removed and planted with grass. The site is bounded by Benson Ave S (108 Ave S) to the west, SE 170th Street to the north and single family residences zoned R -18 and R -12 to the south and east, respectively. The majority of the site is flat with 3-foot high slope down at 3: 1 to a swale located along the eastern half of the south property line. Frontage improvements for SE 1701h Street are required as shown in the Appendix A Exhibit, "Area Map: Benson Heights Plat" including new curb, gutter and sidewalk The United States Department of Agriculture defines the site soil as AgC-Alderwood gravelly sandy loam (Hydrologic Group C). A gcotechnical report (see Section 6. Special Reports and Studies) prepared for the site indicates that the site soil is silty sand (SM) and not recommended for BENSON HE113HTS PLAT 2-TIR Z/3/2008 PAGE 3 OF 1 7 general infiltration from impervious surfaces. Site design criteria are based on the Requirements of the 2005 King County Surface Water Manual (KCSWDM), as currently adopted. The project proposes a total ofS,952 sf(square feet) of on-and off-site impervious area. Per the KCSWDM Flow Chart, p. 1-11 and per feedback from Mark Follmer, PE King County Engineer it appears that the site qualifies for Small Project Drainage Review even though one of the lots (Lot 1) proposes a 2-unit multi-residential structure. The project requires as Targeted Drainage Review since alteration of an existing conveyance pipe larger than 12" is required. Should the project be subject to Full Drainage Review (since one of the proposed dwellings is a 2-unit multi-residential dwelling), an analysis of the project for Full Drainage Review with respect to flow control has been provided in Appendix Band is discussed further in the "Core Requirement 3: Flow Control" Section below. 2. CONDITIONS AND REQUIREMENTS SUMMARY Conditions Summary This section is intended to meet agency specific requirements for all applicable Core and Special Requirements of the 2005 King County Surface Water Manual (KCSWDM). For purposes of applying the threshold for small project drainage review, the new impervious surface onsite coverage will be limited to 7,316 sfby a covenant, which is 48.0% of the property and less than the maximum allowed by code (85% impervious for R-18). The project exceeds the 2,000 sf threshold which triggers at a minimum a "Small Project Drainage Review". The site qualifies as a "Targeted Drainage Review" Project per modification to an onsite pipe larger than 12". The site lies within a "Conservation Flow Control Area". Consequently, this report intends to address all site specific drainage issues. Core and Special Requirements Analysis Core Requirement l. Discharge at the Natural Location In the pre-developed site condition the 0.394-acre site, zoned R-18 runoff currently flows overland as described below. Lots A & B currently developed with the a duplex and associated driving surfaces drain (uncontrolled) to an onsite catch basin ( cb) located at the site northwest comer. The Appendix A Map, "Level I Downstream Analysis Map 1" shows the downstream drainage condition once the site flow enters the existing northwest comer onsite cb. The Appendix A Map, "Level I Downstream Analysis Map 2" shows the existing and proposed onsite flow paths. Refer to the level one-off site analysis in Section III of this report for a detailed description of the downstream. Since the remainder of the site is grassed and flat (with approximately half of the site at 2% slope to the north and south) there is little to no drainage off site. There a.re no indications of erosion or drainage patterns that would indicate concentrated onsite drainage to offsite property. BENSON HEIGHTS PLAT 2-TIR 2/3/2008 PAGE 4 OF" 1 7 The developed site condition with proposed drainage system is shown in the Appendix A Exhibit, "Grading & Stormwater Plan". A new inlet is proposed to drain the frontage improvements via a proposed pipe connecting to the existing SE 1701 1, Street conveyance system located on the north street side. Per the manual Lots 1-3 require drainage systems and utilities in compliance with the King County storm drainage code, discussed in further detail in the following report sections. New onsite impervious roof drains from Lots 1-3 will be tight-lined to the SE 170th Street system, while upstream offsite drainage will be routed in a new conveyance pipe to its current discharge location at the site southeast comer. Lots A & B currently developed with a duplex and associated driving surfaces drain (uncontrolled) to an onsite catch basin located at the site northwest comer and will continue to do so in the developed condition. There are no proposed basin diversions for the project, the same area will contribute to the same basin in the pre-and post-development conditions. Core Requirement 2. Offsite Analysis A level one-offsite analysis is required and is provided in Section IIl of the Technical Information Report (TIR). Core Requirement 3: Flow Control The intent is to meet the requirements of the "Conservation Flow Control Area" for a Small, Targeted Project Drainage Review; however the included calculations show that the project is also exempt from formal detention under the Full Drainage Review. The project proposes a total ofS,952 sf (square feet) of on-and off-site impervious area. With regard to the Small Drainage Project requirement the site does not qualify for dispersion due to lack of area / length of flow-path criteria or infiltration due to a low infiltration rate per the geotechnical report (Section 6). In order to minimize impact the project proposes the following: 1) Per a stormwater covenant limit the proposed impervious to 48.0% of the site (allowable is 85%). 2) Remove 1,667 sf onsite and 175 sf off site existing impervious asphalt and replace with grass. 3) Provide grass-crete surface for all proposed onsite driveway areas. 4) Provide perforated pipe connections. Assuming the project required Full Drainage Review, the provided calculations in Appendix B show that the project is exempt from flow control based on the KCSWDM Exception #2, p. 1-35 as follows: The difference in the sum of the JOO-year peak.flow is 0.098-cfsfor the post-and pre-developed site, less than the 0.1-cfs difference threshold. BENSON HEIGHTS PLAT 2-TIR 2/3/2008 PAGE 5 OF 1 7 In summary, the drainage plan provides an onsite conveyance system utilizing perforated pipe that will convey all proposed roof drainage to the proposed SE 170'h Street inlet. Grass-crete is proposed for the driveways, which will retain precipitation in its porous sub-base to be slowly infiltrated. Restoring existing impervious areas to grass and limiting new impervious areas will minimize any potential downstream impact. Core Requirement 4: Conveyance System Conveyance system elements are shown in Appendix A Exhibit, "Grading & Stormwater Plan" and capacity calculations are provided in Appendix C. Core Requirement 5: Erosion and Sedimentation Control Erosion Control Systems are recommended in Section IX of the TIR. An ESC Plan is provided in the Appendix A Exhibit, "Erosion & Sedimentation Control Map". ESC details referenced on the civil plans are also included in Section 8. Core Requirement 7: Financial Guarantees and Liability If required, Financial Guarantees and Liability issues, forms, bonds and covenants will be addressed per request. Core Requirement 8: Water Quality The project is exempt from formal Water Quality per KCSWDM Surface Area Exemption #1 (less than 5,000 sf PGIS) since the proposed on-site PGIS is only 510 sf, while the proposed off-site PGIS is nearly zero, as the proposed and existing lane width are nearly identical. Grass-crete is proposed for the driveways. The grass protected within the modules functions to treat runoff that is not fully infiltrated. Special Requirement # 1: Other adopted area-specific requirements. The site is located within the urban growth area of unincorporated King County of the Duwamish- Green River Watershed and located just dO\vngrade of the ridge line that defines the drainage basin in the Benson Hill vicinity. The Appendix A Exhibit, "USGS Site Location Map" shows the site in relation to the ridgeline and other features. The site is known to be listed in a "Conservation Flow Control Area". Special Requirement #2: Floodplain/Floodway delineation The project is not adjacent to streams or wetlands. Hence, formal floodplain delineation is not warranted nor required. Special Requirement #3: Flood Protection Facilities The project does not contain nor is it adjacent to a Class 1 or 2 Stream and the project does not BENSON HEIGHTS PLAT 2-TIR 2/3/2006 PAGE 6 OF l 7 propose to construct or modify any flood protection facility. Special Requirement #4: Source Controls The project does not require a commercial building or commercial site development permit. Therefore, this requirement does not apply to the site. Special Requirement #5: Oil Control The site is not a high-use site. Therefore, this requirement does not apply to the site. BENSON HEll3HT6 PLAT 2-TIR 2/3/2008 PAGE 7 OF 1 7 3. OFF-SITE ANALYSIS (LEVEL ONE DOWNSTREAM DRAINAGE ANALYSIS) See attached report this section. BENSON HEIGHTS PLAT 2-TIR 2/3/2008 PAGE 8 OF 1 7 King County, Washington Level I Analysis For: BENSON HEIGHT PLAT PROPOSED RESIDENTIAL DEVELOPMENT Location: 10801 SE 170TH ST RENTON, WA 98055 Tax Parcel #: 2923059026 King CO File#: A07PF002 LD Engineering, LLC Seattle, Washington 98102 I \ .f 1/z:1/JB r:! EXP=IR:-=ES:"".3::-'.'./3:-:-1/-o""'R __ _ Prepared by: Leonard Difrancesco, PE January 29, 2008 Date I Description Task 1. Study Area Definition and Maps Exhibit A, this section is a site vicinity map showing the area of study. Exhibits Al and A2 are 500-scale and 100-scale aerial photos, respectively of the site. Exhibit A3, this section is a 200-scale map which includes the site property lines, 5' contours, the existing and developed flow paths shown for at least a V. mile distance downstream and highlighted parcels indicating that a drainage investigation report has been filed with King County. Exhibit A4, this section shows a 30-scale view of the pre-and post- development flow paths. Exhibit 13, this section delineates the I. 76-acre upstream offsite area contributing drainage to an existing onsite drainage system. Exhibit C, this section delineates the 1.76-acre upstream offsite area abd the pervious/impervious sub-areas based on an aerial photo. Cruz/Loranger Site Site Vicinity Map LD Engineering LLC :-.<:·i:t'·::;;·" :,}. ,;~vr:,a1;~;1~~5~.- ~· . ~ j, fh ]r~ I C"') 0 l f .. ~:f'11 it •i,J•i}I ·I -1-] f • i ,. i, NQ j J! i•h?J,I OJ: 0 ,3 ~ 1 d!AJU1ii 5: a. ! ® ! 1··1 · ,!/1 § Cl. LO ii 1 ~ BIi ~11,,~ii1h i I'-0 ~ ~ Oo ·:·:·:·:·oo hlhHtfH <(N !~ ~ • 0 ~· ~ ~ ! 11 ih iu· 1 C") 0 ~ i 11 •lii\ii,\ t --I-! tili,L!l•l . NO ~ ·i rii .. , 0:c ! . ,i" ! ! ~ " ! th1 J Ilrl •§ ~ a.. @ C.. LO ! ] Bj 1.!i,pl • .1il g r--0 ~ 11it trt· · oo • 1 I i l1! ! <(N at d ti ~ ~ ~ rr ~ , · " .. ' . ' • ' • . 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Resource Review The following resources were reviewed for existing/potential flooding and erosion problems as they relate to the proposed development: • Adopted basin plans available at DDES, DNRP, and the library. Exhibit D, this section shows the site within the Black River Basin. There are no onsite sensitive areas mapped. There are off site sensitive areas within a 1-mile radius; however the downstream flow path is not within the vicinity of any of these areas. The mapped drainage complaints that are within the project flow path are discussed in Task 4. • Finalized dminage studies available at DNRP Water and Land Resources Division. Per an email to Mark Follmer, King County Drainage Engineer on November 30, 2007, County meetings and online research there do not appear to be any drainage studies within the site area. • Basin Reconnaissance Summary Reports and I "=400' scale problem summary maps available at ODES, DNRP, and the library. Exhibit E, this section shows the site to be located within a Basic Water Quality and Conservation Flow Control Area. Exhibit F, this section shows the site to be in a Basin Condition with low sensitivity. There is an area of potential wetland influence; however this area is in another drainage basin, upstream of the site. Exhibit G, this section shows the drainage complaints within a '/4-mile radius designated by King County Complaint file number. • Critical Drainage Area maps available at ODES. As discussed above, DOES Exhibit F, this section shows the site to be in a Basin Condition with low sensitivity. There are no mapped critical onsite areas. • Floodplain/floodway (FEMA) maps available at ODES and the library. There are no FEMA maps for the site. • Other offsite analysis reports in the same subbasin, if available (check with ODES records staff). There are no existing useful off site analysis reports available. An offsite analysis q--to was prepared for the Parcel #0087000301 Townhouse Development, west of the site however the two downstreams do not meet within Y•-mile. Discuss the attached drainage requirements variance request dated July 31, 1991 and Level 2 Report for the Benson Homes Project. • Sensitive Areas Folio available at ODES, DNRP, and the library (see also "Sensitive Areas" on the iMap website: http:%/www.naetrol:.c.,jov%(-ns/i7aapporta1 ilvlAP tnain.htm4 or its successor for critical areas) must be used to document the distance downstream from the proposed project to the nearest critical areas. Per Exhibit D, this section there is no sensitive area downstream within !-mile. • DNRP drainage complaintsz and studies available at DNRP Water and Land Resources Division, phone: 206-296-1900 (see also "Stormwater" on the iMap website: httn:i-wzvw metrokc t~ovioishmapnortal%iMAI' main hml#). Exhibit G, this section shows the drainage complaints within a Y.-mile radius designated by King County Complaint file number. Exhibit Al, in the previous section highlights the parcels (and their Parcel #'s) indicating that a drainage investigation report has been filed with King County. The drainage complaints are provided at the end of this section. In Section, Task 5 the drainage complaints with respect to the project are discussed further. The following is a complete list of the drainage complaints by King County Files Number in chronological order within a Y.-mile radius of the proposed development: 2007-0388 (FI-NIA since it's a SWM fee Inquiry) 2007-0271 Parcel#: 2923059028 This complaint is provided below and discussed further in Section, Task 5. This complaint was issued by the property owner(s) of this project. 2006-0068 Parcel#: 2923059144 This complaint is provided below and discussed further in Section, Task 5. This complaint was issued by the upstream neighbor, Robert Lyons. 2006-0470 Parcel#: 0087000207 This complaint is provided below and concerns a localized drainage issue with the neighbors landscaping modification. This complaint is not within the direct downstream of the project. 2004-0971 (WQA-NIA since it's a water quality audit) 2003-0974 (WQA-NIA since it's a water quality audit) 2003-0222 (WQA-NI A since it's a water quality audit) 2000-0227 (WQA-NI A since it's a water quality audit) This complaint was closed after the county removed trees from a tract that were in possible danger of falling. 2007-0088 Parcel#: 0087000205 This complaint is provided below and concerns erosion of a residential driveway access. Gravel was added and resolved the problem, closing the case. This complaint is not within the direct downstream of the project. Since the below complaints are 10 years or older, they are no required to be investigated per the 2005 manual requirements. 1995-0539 1991-0290 1990-1453 1989-0813 1988-0511 1984-0084 • Road drainage problems (check with the KCDOT Roads Maintenance and Operations Division). The KCDOT was contacted and the email response is the following: Subject: Date: From: To: CC: RE: FW: BENSON HEIGHTS PLATS -Request for Road Drainage Problems Tue, 29 Jan 2008 09:25:54 -0800 "Granlund, Jeff" <leff.Granlund@kingcounty.gov> !!'z!Add to Address Book il Add Mobile Alert "Leonardo Difrancesco" <leona rdo_ difrancesco_seattle@yahoo.com > 0 alkibeachseattle@yahoo.com, G annmed888@yahoo.com, sonychung@gmail.com, mike1ook@gmail.com 1 "Ledbetter, Tony" <Tony.Ledbetter@kingcounty.gov>, "Packard, Ada" q-12. <Ada. Packard@kingcounty.gov >, "Ari ma, Debbie" <Debbie.Arima@klngcounty.gov> Leonard, I apologize for the delay. I have checked with both the Drainage Supervisor and Engineer regarding drainage issues in this area and they have no outstanding or planned projects at this time. Maintenance has one drainage issue they have been working with. It was brought to our attention by a citizen and is located at 10817 SE 170th St. The citizen living at this address wants to know what can be done to stop road drainage from flooding his property. At this time I am not sure of the status. If I can answer any other questions please let me know. Thanks Jeff The address 10817 SE 170th St referred to in the email is the Robert Lyon residence, the adjacent property to the east. This issue is addressed in detail in Section Task 4. • U.S. Department of Agriculture, King County Soils Survey available at DDES and the library. Exhibit H, this section shows the soil survey. The United States Department of Agriculture defines the site soil as AgC-Alderwood gravelly sandy loam (Hydrologic Group C). • Wetlands Inventory maps available at DOES and DNRP. There are no onsite wetlands mapped. • Migrating river studies available at DOES and the DNRP Water and Land Resources Division. There are no rivers or classified streams within the project vicinity. ...!) '] A07PF002/3 HYDRO/GEO W/LIDAR Bald Eagle Nest& (WDFWJ Wildlife Netwon,; C] Basins 7'/s1raem ['2J SAO Landslide la SAO C08I Min& i;;::g SAO Selsrric f::j SAO Erosion 'lto.S<raom ~;p ~2S i'.V'.' '',' u Q"'.Ji SAO Wetland {199B) Waler Bodies c::::J WLRD Drainage Complaints LJParcels i ~d ":\",'::~ aml Roost B'4fo~ (WDFW) 800 Foot or Sh0n1IU1e 1320fl;!Ot FEMA Cross Sections FEMA FloodWay [El FEMA 10Q-yr. Floodplain C]Cltias ® 500 1000 1500 Foot 1"= 1333foot w King County Thi, i1formabc>, lochded an lhb °""" Ii.a -a;impllecl l>y Kio!! COlny llafl'lran. ~"'~ ind l•.u,j""1 b;I changs """'°"' l'IIJ!lca. klng C:C....ty maba nu reprMen1ations or w.r&'l!ln, ._.. Dr ln-f,llod, • tu Iha acancy, ~I, tknaUne•, or rlghtl to ll'MI ,ae(I such lnrcirmal.lon. King Cculty--i. -·"" m>)' gano,ra.~.~ncidBn1al'.or~III di,,_. in<hdng, but not llmltecl to, lost,..,.,..,._ or lost pn:,lits rasulting fmm 110 IIW or milUM of the lnrorma6on -on lhil map. Nrf Nie ol 1h11 map or lnfoonrioo .., tt,1g map Is prdllblled ll')l(:8J>1 by written permlnlon ol Klnu C..,,,. Plot date: Oct 12, 2007; \\ddes001\rll1""is\av_de~ectslbase2.apr FDEH C") -N 0 5 0 LL a.o t> <( <CU ·+ //T / / I I , I I I I ----1-----+-+1 -r,---+----.------, I I I j I I I . I i I i , i I i [ 1 r \ KING C NTY A07PF002/3 DRNG CMPLTS Topo t23nl5 5 N" Bald Eagle Nests (WDFW) WUdllfa Network c:JBasios Ns...• [Z] SAO l.ana$1lde E!m SAO coal Mine C=3 SAO Seismic E:I SAO Erosion 5.to.su..m ~iP ~25 fY'.3 ''-' u QO!' SAO WeUand (1998) Water Bodies D WLRD Drainage Gornplairits LJParwrs i B•d e:,• ::' oml Roo• B""rn (WDFW) 800 Foot or Shoreline 1320 Foot FEMA Cross Sections FEMA Floodway film FEMA 10()..yr. Floodplain (:]Cities © 400 Feat 1"= SOOfeet U1 KingC<,ur,ty Too lrtOffnallon lndlldlld ""'""' map has bun canpi<od by khgCom!)'slall"lftima~ofllDIA'<lnondkli~ID mango """""-'I nc:illm. KIIIII Cola'rtt ll'IMINI rm ~<Jr-llel,UJ)(H5<irlmpU"", uloth!I 8CClr.:y,~.~ ..-rtof,lt;lall,aUMof auchlrlorrnallnn. khg~1ll'lalrolbalblblaforarr, genaral. special, i'lchi;:t, ~. or~ <WTlagH Inducing, t,,,i nc,11~1o.1o111-..-1,m prunt,, IMiJllnJ:I from lllo>,..., ... ,,,._ of th!l lnlormatlcn i::ontallllld on 1hls map. Ant ....., of !Ill• me,p or Jnlormalian .., this map la pn,hi,jted ~ by 'M'tllon J)eimsalon of Klng """"· Plot date: Or;t 12, 2007; \\ddas(]01\x01\gis\av_devlprojectslbase2,apr LI1.IZI Loranger c,ne Sc,il Mar>-King County Area, 'Washington Soil Map-King coonty Area. Wuhlnglon Map Unit Legend .. _·· '· AaC j Totals for kea O! Interest (AOt) LD Engineering ,,c Nderwood gravelly sandy loa rn. 6 lo 15 percenl slopes .···· . . . · • 1.1 100.0% u \ 1-00.0%1 q-(8 JAN. 14. 1008 /:)OAM KING CO. WLRD NO. 8753 P. 1/12 King County Water and Land Resources (WLR) Division 201 S Jackson St, Suite 600 Seattle, WA 98104-3855 FAX Date: l/ 1-) Number of pages including cover sheet: __ _ From: Cindy Torkelson WLR Stormwater Services Section Phone: 206-296-1900 Fax Number: 206-296-0192 IMPORTANT LEVEL 1 ANALYSIS NOTE: We do not send copies of certain complaint types that are not relevant such as BCW, FI, FIR, FIH and WQA, and we do not send CL and LS types. See key below. Type S 1, S2 and S3 will not be faxed due to size constraints. • IF YOU ARE USING THE 2005 SWM DESIGN MANUAL YOU ONLY NEED !OYRS WORTH OF COMPLAINTS The following is a list of complaint types received by the Water and Land Resources Stormwater Services Section. Complaint numbers beginning prior to 1990-XXXX have been archived and are no longer in our possession. They can still be retrieved, if necessary, but will take additional time and may not be beneficial to your research due to their age, development which has occurred, etc. If you are interested in reviewing the actual complaints, they can be pulled (time permitting) for your review. Copies can be obtained for$ .15 per page, and $2.00 per page for plans. Keys; Type of rnvestigation C Action Request BCW Bt1sincss' for CJc:an Water CCF Response to Inquiry "'CL Claim EH Enforcement on Hold ER Enforcerntnt Review FCC,FCR.FCS Facility Compla:ints FI SWM Fee Inquiry FIR S\VM Fc:c Review PIH SWM Fee on Hold •LS RR NDA WQC WQE WQR WQA WQO Sl,S2,SN3 I....iwsuit Facility Engineering Review Neighbor11ood Drainage Assistance· Water Qua1ify Complaint Water Quality Enforcement Water Quality EnginCQilng Review Water Quality Audit Water Quality-Other Er\gir\eering Srudies Type of Problem OCA DDM DES DIB DTA INQ MMA MMF MMG MMM MNM MNW SWF WQB WQD WQI REM GRT NWD Develapmcnt/CoTiisb"uct:ion Drainage -Mitlcc:llancous Orainago-Ero.sion/Sedimen~on Dniinage-Landslide/Earth Movement Drainage Technical Assistance Drainage-General Inquiry Maintenance .. Aesthetics Mairtterto.nce .. Flooding Maintenance -General Maintenance· Mowing Maintenance -Needs Me:in(enance · Maintenance-NaxiOU!l Weeds SWM Fee Questions Water Quality-Be.u Ma.n~ement Practiet.s Water Quality-Dumping Water Qu31ity-ntioit Connoclion SWM Fee .. R.c:me:surement SWM Fee-Grant SlA"M Fee-New Discount •subject to Public Disclosure rcquircmcnts 1. Receipt of written n.q1.1e.st for documents 2. Review and approval by ProsO:uting.Attomey's office JAN. 14. lUUH /:~UAM KlN~ CU. WLK, NO. 8/13 P. 2/ 12 n,ge 1 of 1 Torkelson, Cindy ·---------------,.----~-.--- <:--m; Leonardo DiFrancesco [leonardo_difrancesco _seattle@yahoo.com] Sunday, January 20, 2008 11 :04 PM To: Torkelson, Cindy Cc: alkibeachseattle@yahoo.com; annmed888@yahoo.com; 'JAMES H LORANGER'; mikelook@gmail.com; sonychung@gmail.com Subject: BENSON HEIGHTS PLATS -Request for Drainage Complaints Hello Cindy, Please provide me the reports for the complaints listed below. Please either email or fax (206.707. 7776) at your earliest convenience. Regards, Leonard Leonard DiFrancesco, M.S., P.E. LD Engineering, LLC 105 Harvard Ave E, Suite#l06 Seattle, WA 98102 (Tels)C206.412.6660 H206.709.0503 F206.709.7776 Never miss a t!tlng. Make Yahoo yoqrl).Qm~ 01/23/2008 (Eve} .__( _ ___,) LOCATION OF PROBLEM, IF DIFFER.ENT: name: Lot No: Block No: No field investigation re uired ~:;~.§~ts;~1~t.~~;g::·1:;~:J~:~~Y:t~i~;t~~1.~~fi~~i~!Ji~~~oiJ~~~fi. ~~·~~.~·~·:~·.~-----~W¥ftg:~Pl~~~t?/:·>2~:::: ;·::~~·i<.';.- S· T Th.Bros: New ~{1J_ RDP Bas1n!JLK. Cowicil District -5 City Charge No. _______ _ RESPONSE: Citizen notified on by: __ phone __ letter / in person f/·"·Ob M~y v..1/ t?e,w). ~ t'NJ4c,-s T;A, rtol/1/lel>. ~GI/./ ,{p,1se: Cl'J;,~tVl,l"Tt~w ,~S<it.5 v;;ct, i,:, t:C /riJ/"J1"/6S~d I!.~ b/)(.5:, 1uc.eV,17tlllS. 70 Vt/.bft't,/lfl.lU"' ll~1VAf.:' C1N,MC ,t s·y,;rct'"I 51"¢'u~ u: bfsr;;u.$.fl:~ ""I f'it,b«iltt cw;.,>(il..S. DISPOSITION: Turned to __ 011 I I by __ OR: No further action recommended because: _j_ Lead agency has been notified:_-i:K:,.:C.=-_D.=....:0:_i,.[_:.,--l/G~o~"lf.r:J):c.:S::._ _____________ _ _ · _ Problem has been corrected. __ No problem has been identified. __ Prior investigation addresses problem: SEE l!'ILE # __ _ __ Private problem • NDAP will not consider because: __ Water originates onsite and/or on neighboring parcel. __ Other (Specify): : CLOSED: I / Z,3 / 01 By: Tl re€ rctuo ,;I) /&;,4;:i s q-l.l Ir~~!· KING 1ACOUNTYWLRD ~ Department of Natural Resources Water and Land Resource Division DRAINAGE INVESTIGATION REPORT FIELD INVESTIGATION FILE NO, NAME Robert L ons ADDlU:SS 10817 SE 170th PHONE 425-255-0395 TBPAGE 65607 KROLL PAGE 601 DATE 11-06-06 MAINT.DIVISION 4 INIT(..U.S SAB DETAILS OF INVESTIGATION: ~ On site on 11-6-06 to meet with Robert lo investigate his report of "modified drainage that may impact an existing problem" at his property. Robert expressed many different drainage concerns that culminated to ~'&8 his point that his "single family ptoperty is being taxed at a multifamily rate" and he wants the County to "show him how to do so with all the drainage problems that the County has allowed". Robert has had some limited success in getung his taxes lowet after much time at the assessors office. Robert wants to know where the additional water from the new residentlal house being constructed is going to go and is concerned about the interceptor trench that has been damaged by the new home being constructed. He does not want it on his property and feels it should go to the street system. (The permit shows <2000 sq. ft. of impervious so it did not require drainage review)) · Robert has lived on his property for many years and has a great deal of history about the development of the street and the properties to the north (see enclosed). Some of SE 170'" St drains to the south In a private drainage system through the property to his west. He has tried to maintain the system over the years. He feels that because the County did not require the developer to connect the cross tile into the drain system that flows west to Benson Rd. there is nowhere to drain the stormwater impacting his and other properties. Robert feels the County should install a drain system on the south side of SE 170 1h ST or "at a minimum reverse the flow on the cross tile ln front of his neighbors' property". ~ . ' / ' ~ I I "l!,\ Benson Glen ,Jt ..,_:,. ;t I I I ' SKETCH: _______________ 1._ ___ I r I ®i -------1--, . , I ..<,'. I ,, .. ,P I I , ' ..., ..... ,o;;;·r- , I I ·t ___ _j _____ _i__ _____ l_J __ ,_L ___ _ ' 'r.. I :;.~_ . / g:\complaints\2006 complai \2006-0668 ly~\ 8:50AM KING CQ WLRD KEY DRAINAGE ISSUES lN 1986 JULIUS CARPENEOO, PROPERTY OWNER TO THE WEST (PARCEL#29230S9026} INSTALLED A NEWDRAIN LINE EASTERLY ACROSS S.E. 170 TR ST. AND HIS PROPERTY TO PROVIDE SPACE FOR A SECOND DUPLEX TO BE BUil,T. IN 1987 WHEN I EXPERIENCED MAJOR FLOODING PROBLEMS BOTillN MY BASEMENT AND ON MY PROPERTY I CONTACTED KING COUNTY TO QUESTION WHETHER THE EASTERLY DRAIN LINE HAD BEEN RECONNECTED TO NEW LINE. AFTER REVIEW BY KING COUNTY I WAS TOLD THAT THE DECISION TO RELOCATE mIS DRAIN BY RlNG COUNTY WAS MADE WITHOUI ANON-SITE FIELD REVIEW, AND THAT AS THE DRAIN LINE TO THE EAST MOST HA VE BEEN REMOVED AND NOT RECONNECTED. (THEY SAID nns LINE WAS NOT ON THEIR DRAWINGS) AND THAT rr w AS THE PROPERTY OWNERS PROBLEM. AT THAT TIME I INSTALLED A TEMPORARY BYPASS TO PREVENT FUTURE FLOODING OF MY BASEMENT. 1N 1992 I WAS APPROACHED BY DEVELOPER RANDY CAMPADORE (SPRlNG GLEN ASSOCIATES II) HE WAS REQUESTING A DRAINAGE RELEASE COVENANT TO B:E SIGNED. (COPY ATTACHED) BE ALSO NOTED THAT HE WAS WORKING IN PARTNERSHIP WTIH KING COUNTY HOUSING TO PROVIDE QUALITY AFFORDABLE HOUSING.(WlllCHIS NOW BENSON GLEN). AT THE TIME I REVIEWED PRELIMINARY PLANS WITH RANDY HE TOLD ME THAT THEIR FINAL DRAINAGE PLAN WOULD lNCLUDE A SHORT RUN OF DRAIN PIPE TO MY EASTERLY PROPERTY L:INE ALLOWING FOR THE INSTALLATION OF AN ON-SITE LINE TO CORRECT THE DRAINAGE PROBLEM TO MY PROPERTY AND THOSE TO THE EAST. THE NEED TO REVERSE THE GRADE ON THE DRAIN LINE CROSSINGS. E.170 TIL ST.WAS DISCUSSED. NOTE: REVERSJNG THE GRADE MEANS THAT THf EXISTING LINE WHICRW AS TifEN SLOPED TO DRAIN SOUTH WOULD HAVE TO BE LOWERED ON TO THE NORTIIALLOWI.NG WATER TO DRAlN NORTli. · BECAUSE OF AOMINISTRATIVE V ARIANCFS AND EXCEPTIONS BY SEVERAL K:JNG COUNTY AGE.~CIES THIS WORK WAS NEVER DONE. I HA VE ATTACHED THREE PARAGRAPHS FROM "THE STORY OF BENSON GLEN" FOR A BETTER UNDERSTANDING ON THIS DRAINAGE ISSUE RE: PARCEL #292305-9144---03 LYONR.B. 10817 S. E.170 TH. ST. RENTON, WA. 98055 DATE: SEPT 15, 2004 JAN. 3. 2008 8: 50AM KING CO. WL ,D January 28, 1992 Mr. Robert Lyon 10817 SE 170th Street Renton, WA 98055 . SPRING GLEN ASSOCIATES Il 14850 Lake Hills Blvd., B-1 Bellevue, WA 98007 RE: Dra:irulge Releaiie CoTenant for Spring Gl~n Subdhision. Dear Mr. Lyon: Per our telephone conversation of a few days ago, I have enclosed a drainage release covenant for your signature and a copy of our site plan with the existing water flow outlined in green. As we discussed, this release form is necessary in order for us to construct a storm drain that would divert water currently rnnoing onto your property from ours. You will notice that you will need to fill in the date at the top of the page as well as have your signature notarized on the second page. I have included a stamped, self addressed envelope for your convenience. Your assistance in this matter is much appreciated. Sincere Regards, SPRING GLEN ASSOCIA1ES II ~~ RLC:ka 3812892 enclosure q-v.f • JAN. 3. 2008 8: 50AM KING CO. WLRD P. 6 ·-------.... DRAINAGE h "' th I / ~ !!!_ day o· f T Is agreement ma~e s -=-.;,~~ M .A.,1,-t.J CM> _ ___.:....;..;.T>.:.:..;.;:,-....J:::;.;.._"---· 19~, Mr, & Mrs. Robert Lyon hereinafter cai led the GRANTOR, and KING COUNTY, a polftlcal subdivision of the state of Washlngt~h, hereinafter called the GRANTE!::, and whereas GRAN'rOR represents and warrants that It Is the owner In fee of that certain parcel of land, described as fol lows, 10817 SE 170th Street, Renton WA 98055 and whereas the GRANTEE' Is presently reviewing a dl'alnage plan for a proposed SINGLE FAMILY SUBDIVISIONpermlt for the project known as _____ .._,,.fj ... E,.A.._D ... o-"'w__....GL..,__..EN11-________ , perm I t no. a pp J ; e d £-or . on rands located at 10850 SE 170th Stteet, Renton WA 98055 and whereas said plan proposes to divert from their natural course of flow certain surface 11nd storm water.s so as to cause them to flow (onto) (away from) the rands of GRANTOR, now, therefore, In consideration of the approval of GRANTEE of diversion In said plan and other valuable consideration, receipt of which Is hereby acknowledged, the GRANTOR hereby agrees and consents to the diver- slon of surface to ho Id GRANTEE and storm waters (onto) ,(aw;,:y from) rts rands and .___.,- harm I ess for any --damage that may be caused .. b.y. such ~ .. ' diversion Of flow and this conveyance shall be a covenant running with the land and shall be binding upon GRANTOR and Its heirs, ... successors and assigns forever. 1 of 2 1/M ,• JAN. 3. 2008 8:51AM KING CO. WLRD IN WITNESS THEREOF, the parties hereto have hands: STATE OF WASHfNGTON)ss COUNTY OF KING ) on this day personally appeared before me, ... L.w) o...l.ld..uB:1..-.!>,C.~t ~*· .,.._o ..,..A,/'--'-fil-WL.,!t Q...,_Yi).J...Jl.l.to ... _""-f..J..,.±~Bc...., ...... 1 ..... r+>to...,_,_A .... J_. to me 1< nown to be-the lndlvldual(s-)-s d.escrlbed lh an_d who executed the within-and· foregoing Instrument and acknowledged that they signed the same as the Ir free and vo I untary act and deed, for the uses and purposes therein st.o.ted, Given under my hand and official seal this \ 3 i1--oay of __.01..._....o~v~o=l:\._,,_~~~· 199J. Gi@Rh<l NOTARY PVBLIC~ for the state (:J~~uJfrat ~· ,.,.,,, . '• -~ . -· . . ' . . . "l .,.. • ., , /Ofl ci = = = ~ 3=c ci C> = = ""' "" -.c cc-, 00 00 = = """ "" z -.c ~ r-L-. __ J i---. I· -- 1 -r--~-----1 ,-- / I _L_r-L . I I I _ _J --- .. ----.. ~\ ----L__ --f • I . ,._,. r.J --1 ,,t., ------"'' . -------------·-wf ~ -~!; -----0 - '· ,r:.,-:. -----J {<;~-r g,.,,,o"'" f 't-i . I t;;-o.p ~ ~ I , __ _._ . ---_ ___,II I ~ I "' ~":~ ,,_~o 0--?' ,('r . ,'ll' "'41~_ ,,, -'It" • O!li) l 0 ~,Vl ~ ;., .. TEMP. '2vL-DE. SAC. ' \\ ..._o 6-.,, _,. •· JAN. 3. 2008 8:51AM KING CO. WLRD . ----;-----. The Story of Benson Glen · A Journey Through the Land Use and Construction RµIes which Regulate Housing in King County · A Report for the King County Housing Pannership by Carol Lewis · September 1993 · I \;\~\JE l:.~LulXD 3 ~P\GieAPjiS' ~ ··n-!\S IIC)f6.. -~~., Wtt,u~ D1~TLY IMPAc.r DfA twAGE: (Gol!JNl'-f R~".t>/ §TAl'J.oPt~l'>S-foe._ N"! 1'io?~~T'1-· ,-\-\,e::._e:. IS' f11Jt.t-i· t-¥\oa..-E l.f~UT As,. 1 \1A.,"Ve tJ,ci1'6o t, ,~ \A.ij,£~ Tec.tJt\J:iecJ\L. nJ >JtW-)~E - ', .. JAN. 3. 2008 8:51AM KING CO. WLRO --.i.,..,.-:. -- -. Offsite Utility and Road Work The road leading into the J:!enson Homes had never been recorded. As far as King , County·was eoacemecl, the paved surface referred to as SE 170th, leading from Benson Road toward the well-grazed pasture land and seven single-family homes, was just a big driveway. Although the Cowity maint.ained the road, legally it didn't exist. Before the subdivision would be approved, Threshold would need to change that -it would need to record the road. And, since it would then technically be a new road, ~hold would need to improve it to meet current County standards. That would mean adding cutbs, gutters and sidewalks to both sides of the street. (The Cpunty's Road :Engineer later gzanted an administrative variance which relieved Threshold of its responsibility on the south side of the road.) p~·34, PA~·.3 .,. , ) Meanwhile, the County's drainage standards required Threshold to improve the storm sewer undem~ Benson Road. The County wanted to insure the stonn sewer could handle flow,, front new sub collectors which were part of the Benson Glen drainage system. Threshold was requited to dig up 400 feet of Benson Road, rebuild the stonn sewer and repave Ute road. According to County engineer Tricia Junke, the County normally would have required Threshold to provide curbs and gutters when repaving the road, but in this case it made an exception, settling for a simple shoulder on the road. According to Jim Kramer, Manager of SWM, the County will have to require even more expe~sive design specifications in the future to meet federal water quality standards. He and .his ~ are now pondering what this will mean for development in King County. Thell' hope 1s to meet the intent of federal regulations while ·.,;;,,;..;,. .. th d nu._,_'b e c:osts to o so. Gary Upper, Conners land development specialist, is horruied at the thought of ~ricter standard · • · · s, arguing that the SWM rcquiremeius go beyond science, go beyond what is known about watec quality.· He adds, "If the County really cares about water quality, it ought to fix old problems, not make complicated requirements for developers which result · o. ~ V" in negligt'ble improvements.• · . 1 · t KING CO. WLRD King County Department of Development and Environmental Services 900 Oakesdale Avenue Southwest Renton, Washington 88055-1219 Pennit Number: Date Issued: Expiration Date: Pennit Status: Construction Permit Permit Type, Subtype: DWELLING, SINGLE Title: LOT 2 KCLLA 283013 ',i B06L0824 08/11/2006 08/11/2007 ISSUED Description: LOT 2 KCUA 283013 -TWO STORY SINGLE FAMILY RlaSIDENCE WITH ATTACHED GARAGE AND COVERED PORCH (MECH INCLUDED) Loc:ation: LOT AKCLLA283013 List of Parcels: 292305-9128 Site Address; 10819 SE 170TH ST KC Valuation: $198,517.18 Applicant Name: STANBROOKE CUSTOM HOMES INC Comments and Conditions 1. Work Subject to Approved Plans aitd Conditions. Work authori:aed by this permit is subject lo tb.e approved plaJJs and corrections show,i, thereon and the &ttached conditions of pe:i:mit approval. Failure lo comply with all conditions once COJ1Struction is begllll may necessitate an immediate work .wwage until such time as compliance with the stipulated cOlldltions is aitained. · 2. l'osttng on the job site. This permit must be posted on the job sire at all times in a visible and readily accessi"ble !pcation. 3. Scheduling Inspection!. InspectiQll tcqUests for re$idenlial, conunetcial/mw.tifamily, and new construction me permits may be sc.heduled by calling the lJDES Voice Inspection Line at 1~88-54'-7'728. This :request line is available 24 hQUrs a day, 7 days a week fQr your conveniccre. hlspection requests l)lllS! be called in prior lo 3:00 pm, M·F to ap<pear on the schedule fQr the following business day. Inspectors are available by phone M-F, 7:30 8II1 lo 8:30 am only at 206-296-6630. Scheduling and inspector availablility is .ubject to approved holidays. You may ob1ain inspection resul!B by calling the DDES Voice Insptct:ion Line, n;ricwing the ji,spection information left on site, or contacting the in&pector of record. You may obtain general inspection !nformationM-F, 7:30 = to 4:30pmat20c,..296-6630. 4. Expiration. Please note the expiration date on this permit located in 1he nwer right comer. A permit llll.y be extended or renewed in accotdance with the Kiilg County Code only if a requt;$1: lo do so is received at least 30 days prior to the expiration date. 5. Compliance with State and Federal laws and the Endangered Species ,Act. The applicant is responsible for makiJ1,g a ' diligent inquiry regarding the need for concurrent state or federal permits to engage in the work requested under this permit, and to obtain the required permits prior to issuance of this permit lt is understood that the grantwg of this permit shall not be construed as satiafymg the requirements of othet applicable Federal, State or Local laws or regulatio!l.!, In addition this petmit does not authQilZC the violation of regulations. In addition, the granting of 1his pe:i:mit does not au!honze the vio!atiw oftm Endangered Speci.es Act as set forth at 16 U.S.C. § 1531-1543, including the prolu'bition on the "taJa," of threatened or endangered species. "Take" is defined at 16 U.S.C. § 1532(19). Jt is the applicant!! sole respOllSihillty to detennine whether such ''take" rntrictions would be violated by work done pursuant to this permit, and is precluded by Federal Law from wdertaking work authorized by this peonit if that work would violate the "take" restrictions set forth at 16 U.S.C §1538, 50 C.F.R. §17.21, 50 C.F.R. §1731, 50 C.F.R. §223 and 50 C.F.R. §224. 6, Fees due: Enfo~cement. The King Collllty Code states that fees associated with the ,:eview and inspection of projects ;requiring pemrlt applicatiO!l.! are due at the time of application for semce, or within fifteen days of receipt of an invoice from Kb:\g County's Department of Development and Environmental Services (DDES) stating that =ntly hourly rates are due. DDES may xequire a deposit of between twenty lo eighty percent r1f the total cost of the review and inspection of a permit application at the time of application. Failure lo pay fees in a timely =er is a civil violation, It is King County's policy to take enforcement action including, but not limited to, the issuance of a Notice and Order and/or Stop Work Order, when an applicant has violated the King Cou:c.ty Code by failing to pay fees when due. By accepting issuance of this petmi~ the applicant acknowledges that if he/she fails to pay fees when due, DDES :may bring a code enforcement action to recover unpaid fees. q r 30 We>' Mt IJ f: A (. zyo6~ OGb'o l'(OfJ •. ,, . T'' .. ,.._, ._.,,...,, J.J.U' l'\l""I To: ZZGrp, WLR stormwater Complaints Cc: Bentler, Fred Subject: WLR Dll form Submission ilto;wlrstormwatercomp@metrokc.gov] Drainage & Water Quality Problem Report Form Submission Name: Leonard DiFrancesco E-mail: ld_engineering@yahoo.com Day Phone: 206-4126660 Evening Phone: 206-4126660 Address: 105 Harvard Ave E, Suite #106 Seattle WA 98102 Problem Location :(if different): Property Information: Parcel#: 2923059026 Address: 10801 SE 17oth St, Renton, WA 98055 Problem Type: drainage Reported Problem Description: . Background and Artificial Drainage Pattern Description: The following drainage analysis was conducted on April 13th, 2007 by drainage engineers, LO Engineering, LLC. The drainage concern for the said property is that runoff from the ditch-line within the ROW on the south side of SE 17oth Street discharges openly onto private property. Based on the King County GIS mapping, SE 170th Street intercepts drainage from an approximate 1.71-acre area south of the road and concentrates it within the ditch-line. If the road did not exist, based on the general contour pattern this flow from the area south of the road would not concentrate and flow overland just north of the site. Drainage System Description: The ditch-line described above terminates at the said site northeast comer and flow enters a small 6"-diamter, corrugated metal pipe, 3 feet in length, which then discharges to a catch basin's east side (CB#1 ). Flow then enters a 21 "-diameter, 54-foot long CMP pipe and . JAN. 3. 2008_ 8:54All,L_KJNG CO. WLRD---:--:.-~-'.:::""'"""111!111111!11!11 r J:lischarges to a channel at the southeast site comer. The channel travels west along the property line until a retaining wall and higher site grades direct the flow onto the adjacent property to the south. The flow on the adjacent property has no defined channel and terminates with no outlet in a low spot just behind the house. LO Engineering, LLC could not locate any drainage easements associated with any portion of the drainage system on either of the two private properties. Drainage System Analysis: The condition of the 21" pipe and channel are poor. Accumulated sediment in the channel at the 21"-pipe end combined with flat, to zero pipe slope allow for constant standing water in the pipe. The channel section and low point on the adjacent property were evaluated on March 15, 2007 by a wetland Eclogist, John Altermann of AOA, LLC. The report states that, "borings taken throughout the undeveloped portion of the site revealed non-hydric soils and no wetlands were identified on the property. Soil saturation was limited to a small cut ditch.· The report goes on to say, "Since the open ditch on the site appears to convey entirely artificially collected n.moff within an intentionally dug channel through uplands where no channel previously existed, it is my opinion that the ditch should not be regulated as an Aquatic Area by King County. Furthennore, King County GIS mapping shows no wetlands located within over a mile radius of the site. Based on visual obseivation by LD Engineering, LLC the wet areas do not appear to be a healthy ecosystem. There are associated patches of blackberry, but no additional growth that would indicate a wetland ecosystem. The property owners in the area report the standing water as a breeding area for misquotes in the summer and a public health hazard. The site reconnaissance by drainage engineers, LD Engineering, LLC indicates that the 21 "-pipe entering the north side of CB#1 most likely has no associated flow. Based on the 21"-pipe . alignment, if ttle pipe were still functioning it would have to cross under the building foundation of the relatively new (Year 1994) Heron Glen condominium development across the street. The 21"-pipe most certainly predates development to the north and since its installation a newer, much deeper (approximately 10 feet deep) drainage system within the north side of SE 17oth Street intercepts and collects all drainage from areas north of the road. The property owner's report that even during heavy storms, the 21"-pipe to the north does not convey surface flow. During dry periods in the summer, when the standing water in the pipe evaporates, there is also no observed flow in the 21"- pipe section from the north, indicating that groundwater doesn't contribute to pipe flow. LD Engineering, LLC Recommendations: We recommend that either the county (if they determine it's their responsibility) or the two property owners directly affected be allowed to remedy the current drainage situation which is perceived by area residences as a nuisance. Both property owners are evaluating their properties for development oftownhomes, consistent with the neighborhood character, but desire to resolve this drainage issue beforehand. A storm manhole located in the "functioning" SE 170th Street drainage system lies directly across the street from CB#1. Nothing needs altered aside from a new, approximate 30-foot long pipe extending from C8#1 to the manhole, which would tight-line all the discussed street drainage from the south side of SE 170th Street to the public street storm system. However the county sees fit, this work could be ~ condition of approval at the time of either site development or JAN. l. 2008 8:54AM .,,.,.,,, .. l'.."'e""w-,"rom --· -· ·· ... From: Lew, Tom Sent: Monday, May 14, 2007 4:46 PM ro: 'leonardo_ difranoesco _ seattle@yahoo.com' Cc: Torkelson, Cindy Subject: FW: Loranger/Duplex Sites -Drainge Complaint not "historical" HI Leonard! It was nice to talk with you again on the phone this afternoon. As I promised, here are the main points that we discussed: The "historical' term I used ts in regards to the natural drainage path b.efore the developments on the north side of SE 170 St were built. As indicated on contour maps. stormwater flows north to south across the 2 properties you represent, Flows from the north side of SE 170 St are now intercepted by the storm pipe system and conveyed around your clients' properties. This (along with capping of the culvert) has reduced the flows onto the properties. The old pipe system across your clients' properties is further indication of that natural drainage path. My guess is that the (previous?) property owners installed the pipes. King County would not construct a pipe system across private property (unless with an easement) nor would King County use a• pipe. Pipes, ditches, drainage systems, and even natural drainage paths are the maintenance responsibility of the property owner. The catch basin (CB) we talked about is"olf road right-of-way and is considered part of this private pipe system. King County will not re-locate this CB nor change the pipes to/from It. As part of the development of your clients' properties, you may propose bypassing the off-sile flows by making the changes to the CB and pipes, ~s we discussed. We have stonnw.iter plans, profiles, and calcs/TIRs in our files here in our office for 097874 Heron Glen and 092207 Benson Glen. You are welcome to review this info to assist in your design and analysis_ Please call Cindy Torkelson at 206296.8171 to ake an appointment (after lunch in the afternoons). -~t me know if you have any further questions. romlew 206.296.8327 l=rom: Lew, Tom Sent: Monday, May 14, 2007 8:02 AM To: Torkelson, Cindy SUbject: RE: Loranger/Duplex Sites • Orainge Complaint not "hlstorrcal" I had talked with Mr. DiFrancesco (an engineer representing the property owners) prior to and after Shawn's field investigation . .will call him to discuss again. From: Torkelson, Cindy Senti Monday, May 14, 2007 7:49 AM TOI Lew, Tom subject: FW: Loranger/Duplex Sites -Orainge Complaint not "historical" ·' this something you were working. From: Leonardo DiFrancesco [mailto:leonardo_difrani;e.sco_seattle@yahoo.com) Sent: Sunday, May 13, 2007 8;40 PM To: ZZGrp, WLR Stormwater Complaints CC: annmed888@yahoo.com; chungsony@yahoo.rom; JAMES H LORANGER; alkibeachseattle@yahoo.com Subject: Re: Loranaer/Duolex Sites -Drainoe Comolaint not "historical" -~JA=N .. 3. 2008 8:54AM_KING CO. WLRD . , rr ·-~ We apprernte tlie Cciunty taking tm1eto wv,::1;t:1gate our <kainage c I I! ~£J.4 31;1£, 17iiliilllllillll issue is one that needs attention. Howe\'er, three property owners affected by the drainage problem woul~ contest the Cowrty finding that the CllITeilt drainage regime is "historical" a.nd is the responsibility of the private moperty owners. Property owner, Mr. Robert Lyon and funner Soos Creek Water/Sewer District Manger has entation in the form of records and verbal discussions with the County since the 1960's that indicate the current siti...~on of the 18" pipe discharging to private property a.nd "ponding" with no outlet was conveyed prior to 1982 in an 8" pipe the entire distance to a ''proper" location south of the properties, discharging to the Benson Road system and not flooding any private property owners. Mr. Lyon confirmed as I expected that the 18" pipe is capped at the north end and all flow to the catch basin and private property is runoff from the public SE 170th ditch line. It seems that the solution is relatively simple, move the catch basin approximately 4 feet to within the ROW, abandon all 18" CMP pipe sections and connect to the ''new'' SE 170th street storm line within the north side of the street and approximately 15 feet from the proposed cb relocation. Assuming the County is unwilling to take responsibility for Cop'ecting the drainage is&Ue, what would be our next step in asking the county to do so? Regards, Leonard ********* Start of text sent***"***** Drainage & Water Quality Problem Report FoIID Name: Day Phone: Leonard DiFrancesco 206-4126660 206-4126660 Evening Phone: 4..ddress: 105 Harvard Ave E, Suite #106 Seattle WA 98102 E-mail: ld_engineering@yahoo.com Problem Location(if different): Property Information: Parcel#: 2923059026 Address: 10801 SE 170th St, Renton, WA 98055 Problem Type: drainage Reported Problem Description: Background and Artificial Drainage Pattern Description: The following drainage analysis was conducted on April 13th, 2007 by drainage engineers, LD Engineering, LLC. The drainage concern for the said property is that runoff from the ditch-line within the ROW on the south side of SE 170th Street discharges openlyonto private·property. Based on the King County GIS mapping, SE 170th Street intercepts drainage from an approximate 1. 71-acre area south of the road a.nd concentrates it within the ditch-line. Iftb.e road did not exist, based on the general contour pattern this flow from the area south of the road would not concentrate and flow overland just north of the site. ) · age System Description: f itch-line described above terminates at the said site northeast comer and flow enters a small 6" -diamter, corrugated metal pipe, 3 feet in length, which then discharges to a catch basin's east side (CB#l). Flow then enters a 21"-diameter, 54-foot Jong CMP pipe and discharges to a channel at the southeast site corner. The channel travels JAN. 3. 2008 8: 55AM KING CO. WLR9 ~ades direct the flow onto the adjacent property to the south. The flow on :he adjacent property has no defined channel and terminates with no ,utlet in a low spot just behind the house. LD Engineering, LLC could not ny drainage easements associated with any portion of the dra-..,.e system on either of the two private properties. Drainage System Analysis: The condition of the 21" pipe and channel are poor. Accumulated sediment in the channel at the 21"-pipe end combined with flat, to zero pipe slope allow for constant standing water in the pipe. The channel section and low point on the adjacent property were evaluated on March 15, Z007 by a wetland Eclogist, John Altennann of AOA, LLC. The report states that, ''borings taken throughout the undeveloped portion of the site revealed non-hydric soils and no wetlands were identified on the property. Soil saturation was limited to a small cut ditch." The report goes on to say, "Since the open ditch on the site appears to convey entirely artificially collected runoff within an intentiou.ally dug channel through uplands where no channel previously existed, it is my opinion that the ditch should not be regulated as an Aquatic Area by King. County. Furthermore, .King County GIS mapping shows no wetlands located within over a mile radius of the site. Based on visual observation by LD Engineering, LLC the wet areas do not appear to be a healthy ecosystem. There are associated patches of blackberry, but no additional growth that would indicate a wetland ecosystem. The property owners in the area report the standing water as a breeding area for misquotes in the --er and a public health haz.ard. The site reconnaissance by drainage ei:s, LD Engineering, LLC indicates that the 21" -pipe entering the north side of CB#l most likely has no associated flow. Based on the 21 "-pipe aligrnnent, if the pipe were still fimctioning it would have to cross under the building foundation of the relatively new (Year 1994) Heron Glen condominium development across the street. The 21 "-pipe most certainly predates development to the north and since its installation a newer, much deeper ( approximately IO feet deep) drainage system within the north side of SE 170th Street intercepts and collects all drainage from areas north of the road. The property owner's report that even during heavy storms, the 21 "-pipe to the north does not convey surface flow. During dry periods in the summer, when the standing water in the pipe evaporates, there is also no observed flow in the 21 "-pipe section from the north, indicating that groundwater doesn't contribute to pipe flow. LD Engineering, LLC Recommendations: We recommend that either the county (if they determine it's their responsibility) or the two property owners directly affected be allowed to remedy the current drainage situation which is perceived by area residences as a nuisance. Both property owners are evaluating their properties for development oftownhomes, consistent w'ith the neighborhood <1haracter, but desire to resolve this drainage issue beforehand. A stotm ole located in the "functioning'' SE 170th Street drainage system liw 0 ...irectly across the street from CB#l. Nothing needs altered aside from a new, approximate 30.foot long pipe extending from CB#l to the manhole, which would tight-line all the discussed street drainage from the south side of SE 170th Street to the public street storm system. However the county sees fit, this work could be a condition of approval at ,"1 , .. ___ --L" -·~,. -. _: .... _ ..1--.-1 ..... _ _.._..., r..• rt'\<up:rP.tl ~.Q ~ l'lT'~1T1~1le iten} to be JAN. 3. 2008 8: 55AM KING CO. WLRD 'lease let us know if we may be of any assistance. :.eonard DiFrancesco )esign Engineer ~D Engineering, LLC ~nymous status: Anonyminity is not required for this submission. ::b>Notification</b> status: Notify before investigating rhaDk you for submitting your drainage related complaint/inquity nform.ation to the King County Drainage Services Sectio!L Drainage Services itaffwill evaluate your request and will contact you regarding the rtatus of your request. Return contact is usually made within 5 business lays, except during large storm events when requests must be ~rioritized. If you do not hear back from us it} a timely manner, please call :he Drainage Services Section staff at (206) 296-1900 to request the it.atus of you complaint/inquiry. ~********End of text sent ****"""*"'.to Posted on "04/18/2007" at "03: 18AM" .ard DiFrancesco, M.S., P.E. lngineering, LLC 105 Harvard Ave E, Suite#l06 Seattle, WA98102 (Tels)C206.412.6660 H206.709.0503 F206.709.7776 The fish are biting. Get more visitors on your site using Yahoo! Search Marketing. -··· JAN. 3. 2008 8:55A".._llill.K~IN~G.!CO::::.,, _;;,W:;,;,:,LR:;,!iD···· PURPOSE: LEVEL 2 REPORT OFF-SITE ANALYSIS BENSON HOMES The purpose of this report is to provide the drainage analysis of the off-site drainage conveyance system for those flow diversions approved under SWM Variance No. S91V0l38 and the hearing examiner's recommendation No. 17 in his May 1, 1992, approval of the preliminary plat of Meadow Glen (Benson Homes), project No. S90P0107. An existil!g drainage problem exists off-site, from storm 'flows, near the Renton Fire Station along Benson Road. '.fh.is natural drainage conveys storm water from about 1.3 acres of the site plus about Z acres of upstream adjacent lands and conveys the flow under SE 170th Street in an 18 CMP, and outfalls into a natural drainage swale behind private residences where the flows appear to sheet flow towards the private residences and the Fire Station. Some of the drainage infiltrates and the remainder ponds behind the residences near the Fire Station. There appears to be no direct outlet ~o a developed drainage system. To.help alleviate this existing drainage problem not created by this project, the developer proposes to redirect flows from this project along 170th Street .westerly to Benson Road (108th Avenue SE) in a 12" storm drain tight !jne. Due to required project biofiltration which woµld provide the water quality function after the required retention/detention, the storm drain Jines are at least six feet deep. This depth requires that the· existing 12" storm drainage line in Benson Road be deepened from SW 170th Street to about 300 feet south (near the fire station). The Level 2 Analysis shows that a new 12" stor.m dririn tight line is required from the project site boundary westerly along SE 170th Street to 108th Avenue SE to tie into an existing storm drainage conveyance system. D1le to the shallow depth of the existing 12" C:MP in Benson, the existing line will be replaced by about 350 feet of 18" RCP from a new catch basin at SE 170th and then tie into an existing catch basin near the fire station. The pipe depth would be about 9 feet deep at SE 170th Street and 5 feet deep near the fire station. Slope of pie RCP is about 0.0124 or 4+1/2 feet in 350 feet Hydrological and hydraulic calculations are attached to support tb.e design of the new pipe and to show upstream flow contribution. Drainage releases for the flow diversions have. been obtained and are included in the Technical Information Report (TIR.). q-11- Miht-r ·" ~ JAN. 3. 2008 8: 56AM KING CO. WLRD N0.8434 P. 21 .-----------~--· ... -~--~----- Prqjo,:t w_, 1'/u.dnw r.1 an ,,ojon ~ddro11, 10850 SE l70tb Street 1--------'-"-' '----··. -·-·-·-·· ---·-"""' jpplloont/D••lan £"111,.,..r .... S' 1 tn• tUI",; Nat2 Brown -· --·-·------~-------------1--·-.. -··---·------! 1{ r,n II lln't': 1-----,;P;.;.A_C-t~CH_!~J3:~~-ring, Iuc, ~!00 So~thc,ntar Blvd., Suitt 100 o.,u; June 26, 1991 Phone: 206-24J-7ll2 1---------------·~··--.. ······-·------·-+-- --- Cl tyr Staitl~ tip 1AU1 £r,;f1"11Mr/Pl•r,11r Jnfti.l:!1 ._ __ §.!.•.~t;.!.0'k-!!!J88 ---_________ .., Ilf8l'aUC~I0BS TO 1P1LICAl1'l'/DBSIG!1 !~G:omta: . •1, ... be"""' •• ;"<-ludo •ll pl.,,., ••••~. ;,1>01 .. .,..; -""!di 111'1' .. ,tot 1,, ,...,.1.,, ,..,1.,. w •-lde'tt!o,, of )'"'-JP YOrlorn:e r-t. Fofhlro to peo•l41o •ll ~,if"°"! lm<ll' .. tl<II' •Y rHult ia ~l•VW P'°""'''"' °' lffl'lll of yo,,ir roquc1t, P~n•• 09;t !tJft ,...,..,, ll'ld opo\f<l>ol• f.!! lo th1 lij!Ldfng •lld ~tn::I ~•l~t Oi•l1!on (l.l~D), --~;1l1'1ibdlvfai~ P.,,.t~ C:OU.t,r, •t E1Stpotnt1 nu, sut141/lf, ;iaaa • lloth ~L,ce SE, hllrN!! lol, fa006•1400, DISCRIPTIO~ 07 ~Cl! R!Q11EST; lecouting surface runoff as it flow, south to existing stoTI!I syste~ within 108th Avenue with i.lu~rovement of SE 170th Street APP~ICA!LB SECTXOK(8) OF ST1.Nt!AJIOS1 Section 1.2.l ,:J"t7ST:Z:J'ICA'1'%0lh Surfac" "ate:e flo'w "cross the area of eub-bas:f..i\ A-1 {see "Level One Dow,,istream Repcrt 11 )1 which will be developed 1.llto SE 170th Street,is o! such an insignificant nature that analysis, preaervation s~d prov1B1on of special drainage facilities v:t1; not be feas1~le. The mor• direct and stnsible approach, that of collecting existing surfaca wceer runoff in the new drainage facilities alo~g the ne~ roa~. is beneficial overall to the r~;ide~ts ~011th of the ~ubje~t pToperty, S· ~O-'\ : C,5YJ }~1 ,i·r , • j (,!;,,1 cf I -A, z."V\ ) , O,PAl!TllUT OF PUSL.!C WOUS ,WT,NCl!IUT!!JI; SUS DIVISION~ 5<:tlU0{3~ ...__ JAN. 3. 2008 8: 56AM -"·-·-.KING CO. WLRD· , ' ' ~i,,_-_i~~---. ·-·r·-·.... . . .~ ;r-;Y":""~~:..·,· • ... ,, ........ ,t .. J •• ,~.·. ···,tt:·· .......... ' ~ .. "'1, ..... : ,, ·~=:....:.•,h ·'·· ... :-¥ , >·-'<';JAugust 2G, 1991 . ./ . ' ,:::;::::-·~ ... §WM vai!i'iaoce No. S9~JT01:3J !J 1)}17 · . ,t::· conditions of Aparoval (y V &· ..• -~~·. ~~· 1, 'I'?le applic.ant is required to obtain drainage releases from all downstream property owners affected by the proposed diversion from the point of diver,;-enc~ to the point ot eon'/$rgence for all drainage courses ifflpacted by the propose~ diversio~. The releases ehall be reviewed and approved 'l:ly-BALO Division sta!f prior to engineering plan approval, ..... 2. ~he appliaant's engineer shall provide a level 2 analysis as detailecl in the 1990 Surtaee Water Design Manual for the post- dev~lopment flow diversion route, to incl~de at a minimum o~ l/4 mile downstrea?:1, The conveyance capacity of the downstream pipe system must be in co111plianee with S•ct.ion 1. 2, 4 core Requirement 4.: Conveyance system Siting. Where inadequate capai::ity is de!lion11t.rated under po6t develo:p111ent flow · rates, the applicant ·shall. 1,e requii;ed to providoe. ·mitigation Yhic:h 111.ay ini::lude one or both of the following: upgrading o! the conveyance system and/or reduction in R/D re.lease· rates for the design storm, to comply_with Section 1.2.4 eonveyince criteria. e PROJECT N'AM!:I MeadQW Gl.nn l?RQJECT !im!:UR: S90P0107 V.UIANCI NUM!l!lU S91V0138 TO; ·SWM variance committ•e >.ugu&1t 20, 1991 .-noM: Joe Mil••, Suporvi•or :snginv9Z'ing Review Onit, ... ~ . ...-;:.__ ... ~-- ISSUE: .Requesting a variance for div•r•ion around downstreu properti•• to •lavate known d¢"'11Stre.ul prcblelllfJ. F:t:N:DIN~: Th• proposal i• to reroute tlowa within CO\lllty ~ight-of- Way which ahould provide reli•f to 4own,tream properties currently experiencinq floodizlg ~roblem•· • '.Releases from downat:e11111 prcperties will be required for th~ p~oposed dive~sion. . * l</D and bio!iltraticn .sh<iuld be provided P.er standard criteria. • The cepacity o! the downatre.ua ayatQI. ahould be demonstrated throu~ a Level 2 enalysis. It Ue Level 2 analysis domons.t:ni:t.• c:4pacitY probl~ the detention atandarde •hell be adjusted accordingly. BALD (ltP.U'} :Re,;iolllliUlndation•! conditioMl spproval sw,jec:t ti:, th• s~tisfaetory cQlltPletion c! tha above findings. I g•,'l ,,, ~ I l_ tf1 i ·1 ' I ! " •• Z' Ii: of~· F;~~ ~it~ Il~ij ~if :~ ~~ ~ ,, ~i; I i~ i., t; I'll ' • ® l J Bl G ; >-,, >-: i .! J !,!, i ~ ·; ~:;:.i. • ~ j iil i•~. ~ 11.l/ ~-;--iy-,. Ii: ... g -·~ ii 11 -<31·~~ 2l !tl i'l i i q ~ -rr----~ ,-u I -! • i -- A ~ V ~ di " d • i---_ I ,_ ii ~ - I ~1 Is c;H:LJ. :IS -\ -- ·I --__ .. ---_...,, --.•. ---~ --<; --- ~~ ~ I I g I 1) \ 'l!i \ ' \ \ ,.- ' ' f I I I _J ---® ;: s " ' "' 0: ~ ,;. z " ~~ ,-: '" "' @ ® ® @ ® \ ; 1: I'·'.•• Ii ~ l ' '1 J,. ' " '' •; t:-_: :~~·: , L......; L ~ , ~ 0 ~ ' I 1 '! I I : : I I I I 1 : I I I I I I ! I _J ., D0+9l "VJ$ 3Nflfl!lll'N ~ ~ i ~ ;;; ' i, .. • ~ Ii ~ 11 • I t ·1 ' . 3;ii ~ I J~~ I 1-'iJ 1 1 11 11 1 1 II I \\\-JAN.14.1UU8 /:JIAM·•~u,KJNG CU. WLK!IERANDLAND.l<.ESOURCESDIVISI1NU. 8/Jj ~. 11/11 \ ·· DRAINAGE INVESTIGATION REPORT : 1AA~.d!i~ l'NVESTIGATlONR.EQUEST Type C _, PROBLEM: . ....,_,~.,,_,,x.:..'--'-'IF----~ rrr• -, 11-/,r.,. . . •·C"~. 11 Liv · Date: OK'd b : '--FILENOl'i2QQ]i,;c(;j<' ril RECEIVED BY: N=w~~n~ . PHONE 4d"~,s ADDRESS:-?!ie:bo ""--&-r City f)i,i,-;t ~tate. __ Zipfgga_ I ]OIL/ !Qr'h (hx, SS: (Eve) ,._( _--.,) LOCATION OF PROBLEM, lF DIFFERENT: Block Ne: Parce!No~s·::yoJB KrouW Th.Bros: Newb56/)7 RDP Basin ft K Co1U1ci! District 5 City ___ Charge No. _______ _ RESPONSE: Citizen notified on by: __ phone __ letter __ in person lj-2()-07 NO ~~G/ v-ve!Mt-r,.;/t~~ P:!fl-J'.5 ~ · !f-J..."!ro-'7 fa;,~w/-::M·..v.hS" 11v.J?,/I M-i6r~J<.I r-/t-6"',07 $Ct:>~ r.f-2-S -o 7 /\1t.J-c.,.., / 7 f'r,,,6.$ 5-i-o, ?P.,~"-'/cr~ DISPOSITION: Turned to_ on / / by __ . OR: No further action recommended because: __ Lead agency has been notified: _______________________ _ __ Problem has been corrected. _ No problem has been identified. __ Prior investigation addresses problem: SEE FILE# __ _ ..:L.._ Private problem· NDAP will not consider because: (t,.,'6rt.Jr;err.. Htfi.f/J 111. /'lltll'(}"f,v("I-S 70 t, ()0/lr;>>, __ Water originates onsite and/or on neighboring parcel. __ Other (Specify): lTE CLOSED: 5 1 i l ; 01 By: Tl / ;JFD f£.Diltb& ®q, Kl~NG 1COUNTY WLKU Department of Natural Resources Water and Land Rei;;ource Division DRAINAGE INVESTIGATION REPORT FJELD INVESTIGATION J>ETAILS OX' INVESTIGATION: FILE NO. NAME James Loran er AJ>OR£SS 10801 SE 1701h ST PHONE 206-819-4735 Tl3PAGl!, 65607 KROLL PAGE 601 DATE 4-25-07 MAINT. DMSlON 3 INITIALS -SAS Met with James to investigate his report of a pipe that outlets onto his property. Investigation NTS reveals a CB on the south side of SE 1701h ST abutting the property owned by Ariel Cruz (#10801 SE 170th ST) who was also present. This CB appears to catch flows from the south side of SE 170th ST from 108th AVE SE to 109th PL SE and the runoff from a few properties. The CB outlets into a 18" CMP pipe which flows to the south through Ariel property and into a wide shallow ditch which flows southwest. This ditch terminates at James' side yard and sheet flows through his back yard causing a large puddle during rainy periods. The CB also has a 18" CMP entering it from the north which has apparently been blocked during the construction of the apartments on the north side of SE 170th ST. Both James and Ariel plan to develop their properties and would like the CB to flow to the north into the system on the north side of SE 170th ST that eventually drains south down 108th AVE SE keeping the stormwater off their properties .. SKETCH: '' ; ~ I L.... --·-----·------ L ___ l I I --~--, -· ' I ~ ~)~ I ; I --~---~-' ! 1-------t -------~--1-----_,- c:\documents and settings\sbergrud\my documents\ j Altmann Oliver Associates, LLC AOA E,,. (-t:!)) :1:l::0.-1:~,n!1 En\'lron1nent:a1 March 15, 2007 Marci Maehren c/o Dale Meyers 17101 156th Ave. SE Renton, WA 98058 Planning & Landscape Ard1i1ect11re AOA-3485 SUBJECT: Wetland/Stream Reconnaissance for Parcel 292305-9026, 10801110803 SE 170'" Street, King County Dear Marci: On March 14, 2007 I conducted a wetland and stream reconnaissance on the subject property utilizing the Washington State Wetlands Identification and Delineation Manual (1997). The western portion of the site is currently developed with an existing duplex. The eastern portion of the property is undeveloped and consisted primarily of a mowed lawn with scattered patches of Himalayan blackberry (Rubus disco/of). Borings taken throughout the undeveloped portion of the site revealed non-hydric soils and no wetlands were identified on the property. Soil saturation was limited to a small cut ditch in the southeastern corner of the property. This ditch appeared (but was not confirmed) to convey runoff collected from: 1) a bioswale located on the Heron Glen Condominium site on the north side of SE 170th Street, 2) catchbasins within SE 170'" Street, and 3) a catch basin located in the lawn within the northeastern corner of the site. A small trickle of runoff was observed draining from east to west within the open ditch at the time of the site visit. This runoff drains onto the property to the south (no access obtained) and is likely either piped or seeps into what appears to be a small pond located behind the house in the southern portion of Parcel 292305-9028. Since the open ditch on the site appears to convey entirely artificially collected runoff within an intentionally dug channel through uplands where no channel previously existed, it is my opinion that the ditch should not be regulated as an Aquatic Area by King County. However, this determination should be verified by the County. Marci Maehren March 15, 2007 Page 2 If you have any questions regarding the reconnaissance, please call me at (425) 333- 4535. Sincerely, ALTMANN OLIVER ASSOCIATES, LLC 't-~ John Altmann Ecologist /~:': L.'+.-.LY'!?-1 : JVK:'JNG t~::_..~~·. ~L._'.·.u:FACE WATER MANAGEMENT D1V1 11 v, O l?J -(\/jf;>/(, DRAINAGE INVESTIGATION REPORT r. j/ I r,;v \ I , j [ j 1 \ \ j i \ \ ; l_ l Paga-1:° INVESTIGATION 'REQUE9T - Ref ;J';j 6i. : ; '~\rJ ~ate: 1-:-& -q '7 OK'd by: Type __ G __ Received from: (Please prlrrt plainly for =~Ing), (Day) [Eve) PHONE ·Z'l \ -f:t~ '70 Loca~on of problam, If different: B~ /2..0ADS. ftAiilJ-t ,1 t_),..<> R...SP1N o-c',f I State\JVI \ Lot No: // Block No·: j _ Other agencies Involved: No.Reid Investigation Needed __ _ s·1.u-.. a1 ::i.3 5 1/4 ~-T ---R-Parcel No. ()087000:;J.,~ Kro1t 001w ih.Bros: New '(,5{, 'D G,, Old .c.; 1 ;.: 3 8asln BLK CouncU Dist t Charge No: ____ _ RESPONSE: Crtizen notified on I by .!.:::::'Phone_ letter _ In ~erson 1if l( { '(' // . ,-0, '1'11<. 11 I DG t"1'T A rV µ1 f ,x p1.,1Unrf> ;.) ,,f () -1 I) J ,j~ rf/1.! tJN? 4'1//f 111M.., 11-oM .Div ·9 7F DISPOSITION: Turned to 'on . by OR: No further action recommended becausE ------- £Lead agency has been notified; ~A-"::> ~ if Dz r.J 4== Problem has been corrected. _ No problem has been identified. _ Prior investigation addresses problem _ Private problem -NDAP wilf no: consider because; · · _ Water originates onsite and/or on neighboring parcel _. Location}s outside SWM ~}}jea. DATe CLOSED; / / '2-1j.11._ by; · j'r./ . --C-/,,(/rr)~bS" _ See File# ____ _ · Other(Spectfy): K!Nli CU. WLK~ N0.8/~3 P 4/12-~ ., Complaint 97 -0088 Midgett Investigated by Pat Simmons on 01/16/976 I visited the site and talked with Mr. Midgett about the erosion that was occurring at the edge of the roadway. Toe runoff from the shoulder of the road and his neighbors driveway was eroding a channel in the shoulder of the road where the driveway to the Midgett residence is located. The flows had created a ditch that was 2-3 inches deep and about I foot across. This was causing problems when driving his car into the driveway. Mr. Midgett had talked to someone(Manny) from roads and about the problem and they were going to put some large gravel in the ditch to allow easy access to the driveway. 105th Ave SE Erosion of Driveway l 12" cone Pipe Midgett 17012 Open Ditch J1-11~. fq. LIJLiti 1:JUArvr·~-"!\ll~tJ t..u. WLKU 1 LJn1.--.p .... .a...tn.,1,u, ... ~..,....,'-'A••• ........... ..,A,,"'".1.~.1No. 8753 DRAINAGE lNvESTIGATION REPORT Page 1: INvEsTIGATIONREQUFST P. 5/12 1 \ ,-,~J ... oo Type f=' GR- PROBLEM: I re e d tl M (A. :p-: RECE BY: 1-lfl'I..JC-o c Y--1"'700 OK'db: ~FILENo.E~~.--~-,2!7'j Received from: NM!E: C'RoG~'lL , MR. ADDRESS: 2 21 O I . rz. '3>rA! A\J~ Location of problem, if different: (Day) ,253) (Eve) (2S5) PHONE <i?3 3 -q,3 7'} b "$6 -3 3 8' g SE City:_L!k .... ~"'-N:e...t'.'.<...' ---State__ Zip rt Oo 'Z. Reported Probkm: CALL FIRST EJ (Would Like To Be Present) +-r-e e ~ ~ 0v->c. +<t ( le,"' O'""--of h erj h-e__ / V\ n.eav-.{v+vv-~. (re,.es /J/ld.'] S [A) vV\ f n.:,~r~~ • f d-e ,,,.,) 1+if rf" ')L,.J v1A f rop , ( ~ c, ,4, /2, j -1~ s- OotOf(p t ~· tname:r'.hi~ ~ _ ,her agencies involved: s T R Basin ,'.xi, 7,e,A -Ci 1 7C) Parcel No. 21Z74-{µQL0D Council District -9..__ Lot No:772,A-Block No: No field investigation required __ Kroll 6(5"1;, Th.Bros: New l,,~ Pu Old "'t"i ~8 Charge No .. _______ _ RESPONSE: Citizen notified on / -3 J • "o by: -2.... phone __ letter __ in person Lc:-r Co,.y,~-1,-vn'NJ kNot.\J Ti2Ef'S WG~G a,J JI/S j?.-?tJrtr-~i )' IJNI> oµ 11.1, rH ,w (!o"',v rv rkflc,. j';r5~ i,1/ r;--te(J l?.c1'1'1'1PV~Q .8"1 Co&,1,v1Y~ Cl.05£;-"D • DISPOSITION: Turned to on -~I _ _./---'-. _ by__ OR: No further action recommended because: Lead agency has been notified: _______________________ _ ~ Problem has been corrected. __ No problem has been identified. __ Prior investigation addresses problem: SEEFiLE# · __ Private problem -NDAP will not consider because: __ Water originates onsite and/or on neighboring parcel. • Location is outside WLRD S~a: __ Other (Specify): vn.TE CLOSED: 2 I 1: I CJC'J By: a ~*so J'f2e}g C1<rr/J KING COUNTY Department of Natural Resources Water and Land Resource Division DRAINAGE INVESTIGATION REPORT FIELD INVESTIGATION FILE NO. oo-002;'~u. 8/J3 P. 6/12 NAME MR CROCKFR ADDRESS 22101 -123RD AVE SE PHONE 630-3388 KROLL PAGE 61 SW MAIN"J:. PlVIS!ON _3_ "J:B PAGE ..,.•ea••c26::.i•~ii..!'&,__-1 DATE 1.n4.M INIDt\LS -MAM DETAILS OF INVESTIGATION; ~ SITE VISIT ON 1·20·00. TREES ON COUNTY PROPERTY FELL ON FENCE, INVESTIGATION FOUND THE THE PROPERTY AT 2'101 -12JRD AVE SE HAD SOME FENCE DAMA<lE FROM A TREE N WHICH FELL ONTO THE PROPERTY. TREES HAVE BEEN CUT AND REMOVED. IN TALKING WITt< THE PROPERTY OWNER HE INDICATED HE WOULD LIKE A CLAIM FORM l'OR THE DAMAGES. HE ALSO EXPRESS CONCERN WITH OTHER TREES. UPON NTS FURTHER INVESTIGATION IT WAS FOUND TREES wrne O,I COMPLAINANT'S PROPERTY AND NOT ON COUNTY PROPERTY. TREES MAY ~AVE BEEN WITHIN A DRAINAGE EASEMENT THE COUNTY HAS ON THE COMPI.AINANT'S PROPERTY, BUT WOULD STILL BE HIS RESPONSABILITY TO HAVE REMOVED. PHOTO TAKEN II 1 LOOKIN<l AT PROPERTY 22101 • 12JRD AVE SE NEXT TO COUNTY TRACT. SKETCH; SE 221ST ST I Tl:!t£S. I S V ~x-~~:,.;:-i-;:~x fl ~O ~~ I ' WOOD'i:N FENCE I I ' I I I X HQUSE I 22101 I I ' I I I ' I I I x~x~)(.-x-x-:,,: I I - I I HOU~~ w I I 22107 !/) I I IIJ -~ I I I \ Q 0:: I I C') I N I ~ I TRACT1A I ' ; R/0 FACILITY ' D90467 1 \. ,Jr,1~,L't,LVVV f,)1/"\IYI f\llYU VV, HLI\V __ _ ---------r ---~~--~-----1vv. 0/'JJ r, // IL DRAINAGE INVESTIGATION REPORT PROBLEM: l>il.,U il)A G{ INVESTIGATION REQUEST Type C . G~ . OK' d by: Tl FILE No. 2006 .()'!Jo C€(..(..' {/. ,Ar. (f3ay) (l.,0/a &? ;;;<,;+ 't t-> ) PHONE 'l 7 t,. -6 'f Z0 -0 ~fr) RECENED BY: Tl Date: ~/2-06 .eceived from: I< C v,k B u,4 r<Ar t.J r NAME: (< y,111 tJ/JDS/-(,{ TA AnnREss: { 7oz, 7. -/OS Ave S€ City ~ State Zip 9&gs:_s- LOCATION OF PROBLEM, IF DIFFERENT: Access Permission Granted D ld Like To Be Present) ,l8J name: Lot No: . BlockNo: L"( Z.3 S- 1;1.; -S -. -T-R Parcel No. 008 700 -0 2-07 Kroll ht2/--Th.Bros: New 6 S 0 D (i; _ 07 RDP Basin (6LK, Council District Cl City Charge No .. _______ _ RESPONSE: Citizen notified on ------by: __ phone __ letter X_ in person DISPOS!l'ION: · Turned to on _ ... fc...____,_! _ by__ OR: No further action recommended because: __ Lead agency has been notified: _______________________ _ __ Problem has been corrected. _ No problem has been identified. __ Prior investigation addresses problem: SEE FILE# __ _ ~ Private problem· NDAP will not consider because: rrwArc rR•t.t.r'( /f51/CJ. Ne IM.f# r ff.J;f(ro /( C. r:;.c1o, utf( __ Water originates onsite and/or on neighboring parcel. __ Other (Specify): J :CLOSED: 7 (LO! Ofo By: TL. 041ft TA j M(ll(~TtOrJ 1/JFO. ltvfo fRov/.t')eD ~-lKING1°COUNTY 1 LSV FILE NO. i.v. 0 ~;f 01 I L __ --1 NAME K m Kinoshita ADDRESS 17022 105th AVE SE Department of Natural Resources Water and Land Resource Division PHONE 206-972-6894 TBl'AGE 65606 DRAINAGE INVESTIGATION REPORT FIELD INVESTIGATION KROLL PAGE 601 DATE 7-10-06 MAINT. DIVXSXON 4 XNffiALS · $AB DETAILS OF INVESTIGATION: NTS 7-10-06 met Kym on site to provide technical assistance with the drainage issue between her and the neighbor to the south. According to Kym her backyard prior to the recent landscaping had drained to a ditch between the properties. Now that the landscaping is complete the neighbor feels that she has caused a flooding issue on his property. I explained that this was a private property issue between her and the neighbor. I gave her some technical assistance and left the mediation flyer. SKETCH: I l.cl__ _______________ _j :11 I I I .-=-"'i.-· .=. --r=:::. ,-+® 1! I \ ~ i:1. 'I lo, i£ \ ' ii f I ! I / I ! I \ I I q,SJ Task 3. Field Inspection LD Engineering, LLC performed a field reconnaissance on April 9, 2007 to conduct field observations and report any substantive issues with regard to the downstream conditions. The weather was overcast and approximately 60-degrees. Our reconnaissance included inspection of the downstream pipe/ditch network for a distance in excess of V. mile. For the assessment refer to the Exhibits A3 & A4 (Task 1 Section) "Level I Downstream Analysis Maps" and Exhibit I (this section) "Off-site Analysis Drainage System Table Surface Water Design Manual, Core Requirement #2". OFF-SITE ANALYSIS DRAINAGE SYSTEM TABLE SURFACE WATER DESIGN MANuAL, CORE REQUIREMENT #2 Basin: Black River Symbo · · Drainage Componept < ·: I Type, Name, and E!ize iii ' ', ',-: '' .::·\·,:. see-map .. __ TYJ>e: sheet_fJOW,-swale, stream{ ·i :: · chanrlel,, pipe, pond: Size: diameter.-,··. . , ·,· surface area , ·_: ·,, ' :. •i; . . . • .. .···.·•· 1-2 2-C 3-A A-B B-C .... Existing Site Flow Path - Duplex roof drain discharge to asphalt driveway, 51 ' sheet flow Existing Site Flow Path - northwest site corner cb to cb in north side of SE l 70'h St., 38'of 12" PE pipe Proposed Site Flow Path - rooftol23'of4" perforatged PVC drain Site discharge to proposed 12" PE pipe (CB-I) in south side of SE 1701h St. 12" PE pipe in conveyance _I:, ' V\ 98-4\mB04 J\ Subbasin Name: Drainage . Component Descriotion . drainage basin, -ve~etatiori, cove\ -,_ 1 • depth, type of1 i _sensitive,area; -~ : ·--:. volume -'' asphalt 1 'pipe cover 2' cover 2.84' pipe cover 4.85' pipe Duwamish -Green River Slope Distance· 1 nExisting . Potential . ... from~iJi.; 1 Problems . Pr<>qlems ... .. discharae· .. :·:_: ·:· ' ' ''." ' ·•· ·. ,' :: . ·. ' , i % · Y. mli= 1.~20. ~ '.;_:"co_11striclion_s;:µnde_r'.(?PiJcity; .:' ,. ;U .. --at: ·. -· ··· ponding, o\/er!Qppiqg, ~Q~ding, . ; . · .,h~bitat or organi~rr;t-'9~~1r~¢tiqn, ·. \· ; scourtng, banksl~4l)hJ6g. ·• i · .. · . . sedimentation, incisio(!fqf:ijeferosion 1.5 -None None 1.94 -None None 1% None None Catch Basin min. (CB) is proposed 0.50 O' -28' None None 1.00 28' -None None Subbasin Number: 9 Observatiorjs ot. fillld Jhs.pe.ctor, ·resource.:reviewer, o.r resident · . 'c .. ,., ",,'_,, • '' -·----. ' __ ,.,. , ••. ··• ,, ''" " (/:""' . ·:'-:0" :, : ., " .. __ i :> <>. · tributarfarea, likelihood of.protilem, overflo.v; ·. · · · palh"':'Ys,potential impacts · · · i ;; ', . . : " ' .:: '' -, ::·: No problems observed Catch Basin (CB) appears to be in good condition and well maintained. System is proposed Catch Basin (CB) is proposed Catch Basin (CB) appears to be in © C-D D-E E-F I F-G G-H H-I 1-J J-K 98-4\inB04 system in north side of SE 170 111 St 12" PE pipe in north side of SE 170111 St to conveyance system in east side of 108111 Ave SE 18" PE pipe conveyance system in east side of 108 111 Ave SE 172' -l 8" PE pipe convey sys in east side 108 111 Ave SE -- 23' -18" PE pipe conveyance sys in east sidel08lh Ave SE 86' -18" PE pipe conveyance sys in east sidel08'11 Ave SE 214' -18" PE pipe conveyance sys in east side 108th Ave SE 80' -18" CP conveyance sys in east side 108 111 Ave SE 80' -18" CP conveyance sys crossing to west side of .Sl j., (i' cover 7.60' pipe cover 10.80' pipe cover 5.10' pipe cover -- 4.95' pipe cover 2.90' pipe cover 2.96' pipe cover 2.61' pipe cover 8.50' pipe cover 177.8' good condition and well maintained. 0.44 177.8'-None None Catch Basin (CB) appears to be in 246.6' good condition and well maintained. 0.53 246.6' -None None Storm Drainage Manhole (SDMH) 372.4' appears to be in good condition and well maintained. 0.50 372.4' -None None CB's appear to be in good condition 544' and well maintained. 6.5 544'-None None CI3's appear to be in good condition 567' and well maintained. 1.0 567'-None None CB' s appear to be in good condition 653' and well maintained. 1.1 653'-None None CB' s appear to be in good condition 867' and well maintained. 9.34 867'-None None CB' s appear to be in good condition 947' and well maintained. 1.94 947'-None None CB' s appear to be in good condition 1027' and well maintained. @ K-H _.s, \ ~ 98-4\inB04 108'" Ave SE & discharging to open channel 714' -5' deep X 6' wide Channel banks channel heavily overgrown with briars -4.5 1027' -None None Channel follows the east side of 1741' 108 1h Ave SE, then heads west and down the hillside. Channel is well- defined & doesn't appear to top it's banks © Task 4. Drainage System Description and Problem Descriptions Drainage System Descriptions: 1) Location & Overview The site is located within the urban grov.1h area of unincorporated King County of the Duwamish -Green River Watershed and located just downgrade of the ridgeline that defines the drainage basin in tbe Benson Hill vicinity. Exhibit J, "USGS Site Location Map" shows the site in relation to the ridgeline and other features. The site is known to be listed in a "Conservation Flow Control Area". 2) Physical Description On-site Flow Paths Existing site impervious (duplex and associated driveways/parking area) sheet flows 51 lf (linear feet) to an existing cb (Type I) located at the site northwest comer. The remainder of the site is flat and grassed with drainage either infiltrating or sheet flowing to the north or south. Flow from the northwest cb is conveyed in a 12" PE pipe, 38 lfto the north side of SE 1701h Street and enters a cb (Type I) which is part of the conveyance system running from east to west in SE 170'" Street and is discussed further below. The proposed site impervious roof runoff will be directed via 4" perforated drains 123 lf to a proposed cb in the low point of SE 170 1h Street. The flow paths for the ~re-and post- developed conditions meet 177 If downstream of the proposed cb in SE 1701 Street within an existing cb in the SE 170'" Street conveyance system running along the north side of the street. Downstream System Site discharge at Point A (refer to Exhibit A 1, Section Task 1) is directed to an offsite proposed catch basin (Type I) located at a low point on the south side of SE 170th Street. A proposed 12" PE pipe will convey drainage 28 lfto an existing cb (Type I) which is part of the existing 12" PE pipe conveyance system within the north side of SE 170th Street. Drainage is conveyed west 150 lfto a downstream cb (Type I) and then 69 lfto a 48"-manhole (Type II) at the intersection of SE 170th St and Benson Ave South. An 18" PE pipe conveys drainage 126 lf south in a system running along the east side of Benson Ave South to a 48"-manhole (Type TT). The drainage then continues south 172 lfto a 36"-manhole (Type II), 23 lfto a cb (Type I), 86 lfto a cb (Type I) and 214 lfto a 36"- manhole (Type II). The 18" PE pipe then transitions to an 18" concrete pipe for 80 If to a 48"-manhole (Type II). Flow is then conveyed 80 lfto the west side of Benson Road South and discharges to a 5' deep x 6' wide channel running to the southwest for at least 714 lf where the downstream is over Y.i-milc distance from the site. The channel is heavily overgrown with briars, but appears to be in good condition with much capacity and slope. Flow does not appear to ever exceed the channel banks. Upstream Description The upstream description is quite lengthy and therefore has been given its own sub- section and the end of this Task section. 3) Problems There are no drainage problems in the existing site condition. In the proposed condition the site proposes BMP measures that will minimize impact to the downstream. The project proposes to only reroute offsite drainage in a new pipe to the same discharge location as in the existing condition, as discussed further below. 4) Field Observations Visual reconnaissance of downstream properties or the downstream system revealed no indication of scour, flooding, plugged culverts, overtopping or general drainage problems. Our conclusions are: (1) Continued maintenance of the existing public storm drains is important to prevent future flooding. (2) Meeting the storm water flow control requirement BMP's should effectively mitigate impacts from the proposed development. Problem Descriptions: There are no existing or potential problems. Upstream Description and Analysis: The following is an analysis of the upstream condition. Exhibit B, Section Task 1, "Upstream Area Map" delineates the 1.76-acre upstream area which contributes runoff to the ditch line along the south side of SE 170th Street. The upstream drainage area consists of roof, yard and driveway runoff from approximately four (4) upstream residences. The flow contributed by the upstream area is estimated to be 0.53 cfs for the 100-year storm per the calculations presented in Exhibit 11, this section. Currently, this drainage collects at the existing inlet localed in the northeast site comer. The drainage is then conveyed south by an existing 21" CMP pipe, discharging at the toe of slope which defines the adjacent property to the south. The runoff travels approximately 87 If at the toe of slope where it encounters a retaining wall then has no defined course and sheets over the adjacent property, collecting during the wet season in a low spot just behind the house. There is no flow during dry periods. LD Engineering, LLC could not locate any drainage easements associated with any portion of the drainage system on either of the two private properties. The condition of the 21" pipe and channel are poor. The 21" pipe has reverse slope at - 0.50%, promoting standing water and consequently much accumulated sediment, which in tum creates more standing water. The three property owners bordering the pipe-ditch system report that the standing water is a nuisance. The site reconnaissance indicates that the 18" -pipe entering the north side of the cb has no associated flow as it is an abandoned stub, most likely abandoned in the year of 1994 with development of the Heron Glen Condominium across the street on the north side of SE 170th Street. Therefore, it is suspected that the 18-and 21-inch pipes are what remain of a larger abandoned system that predates the development to the north. Since the abandonment of the original system the newer drainage system within the north side of SE 170th Street intercepts and collects all drainage from areas north of the road which would have previously discharged to what remains of the antiquated system. The adjacent property owner to the east and long time resident, Robert Lyon confirmed that the above analysis is accurate. Even though the proposed drainage plan does not alter the discharge point, this option is not the preference of any of the adjacent property owners. We recommend tying proposed Area Drain#! (the new collection point for the offsite runoff) to proposed CB#l which would redirect the upstream public street drainage back to the street system rather than onto private properties. Pipe capacity calculations presented in Exhibit K, this section show that the proposed 12" pipe capacity is more than sufficient to pass the 25- year storm of the upstream and developed project areas. However, again the drainage plan does not propose to alter to the current discharge location and on! y reroutes the drainage in a new pipe in order to provide adequate offset to the proposed units. Hence, should the County establish a reason not to allow the "fixing" of the drainage system as recommended this development would not be consequently impacted. Should the adjacent property owner to the south develop the offsite drainage would be directed through the property to the storm drainage system within 108'h Ave SE, approximately 344 If downstream of the recommended discharge location. Allowing the drainage to be directed to CB# 1 would prevent having to have private systems bypassing public storm water that would ultimately end up back in the public system. Therefore, intercepting the drainage and directing it to the public system upstream of private properties is the most effective and efficient solution and is the desire of the property owners as well as the county in the past as discussed further below. The history of the offsite drainage onto private properties is provided within the following two attached drainage complaints at the end of this section: 2006-0068 Parcel#: 2923059144 This complaint provided be low was issued by the upstream neighbor to the east, Robert Lyons. 2007-0271 Parcel#: 2923059028 This complaint provided below was issued by the property owner(s) of this project. The drainage complaints both concern the off site water from the drainage ditch of SE 170th Street flowing onto private properties. As part of Robert Lyon's complaint a Level 2 Offsite Analysis from the Benson Homes Development is included. The drainage system in the north side of SE 170th Street was constructed in 1991 as a King County condition of the Benson Homes Development. The system was required to intercept the public, offsite drainage going onto the private properties as discussed above. The drainage from the north side of SE 170th Street was succesfully intercepted, however the south side ditchline of SE 170th Street was not addressed and contiunes to be a source of public discharge onto the private properties. Per a pre-application meeting on January 18, 2008, the county suggested that a wetland investigation of the properties and/or drainage variance may be required. Attached to the complaint issued by the said property of this project is a wetland report conducted on March 15, 2007 by Altmann Oliver Associates, LLC. This report was prepared by the seller of the property at the request of the current owner prior to the sale. The report concludes that the drainage ditch is artificial and that no hydric soils or wetlands were identified on the property. We appeal to the sensibilities of the County to not pursue this drainage issue further by additional time-consuming and costly studies and/or drainage variances based on the bulleted and summarized evidence below: 1) It has been the county's intent in the past to rectify the drainage issue created by public/private drainage onto private properties per the Benson Homes Development Level 2 Offsite Analysis and installation of 3 50 feet of deepened storm system to reroute a portion of the drainage. Since it has been the county's will to reroute the drainage and dry the properties, then the county obviously has not viewed this area as wetland. 2) It is the desire of area residences to rectify the problem. The solution provided will do so at the cost of private owners for possibly a public issue. 3) The site has been evaluated by an ecologist within the past year as not being a wetland. 4) Calculations show that the downstream system has adequate capacity to handle the rerouted flow. 0 0.7 1.4 2.1 2.8 3.5 k111 * M IG1 USGS Site Location Map (j) LD Engineering LLC KCRTS Command CREATE a new Time Series Production of Runoff ~ime Series Project Location ; Sea-Tac Computing Series ex.tsf Regional Scale Factor : 1.00 Data Type : Reduced Cceating Hourly Time Series File Till Grass Loading Time Series File: C ! \KC_ SWDM\KC _DATA \STTG60R. rnf 1.11 acres Impervious Loading Time Series File:C:\KC SWD:,l\KC_DATA\STEI60R.rnf 0.59 acres Total Area 1. 76 acres Peak Discharge: 0.527 CFS at 6:00 on Jan 9 in Year 8 Storing Time Series File;ex.tsf Time series Computed KCRTS Command ~nter the Analysis TOOLS Module Analysis Tools Co:runand Compute PEAKS and Flow Frequencies Loadi~g Stage/Discharge curve:ex.tsf Flow Frequency Analysis Time Series File:ex.tsf Project Location:Sea-Tac Flow Frequency Analysis Time Series File:ex.tsf Project Location:Sea-Tac Frequencies & Peaks saved to File:ex.pks Analysis Tools Commar:d RETURN to Previous Menu KCRTS CoII\F.lar.d exit KCRTS Prog=arn ---Annual Peak Flow Rates--------Flow F!.'"equency Analysis------- Flow Rate Rank Time of Peak --Peaks Rank Return Prob (CFS) (CFS) Period 0.248 4 2/09/01 2:00 ~ l 100.00 0.990 . 0.180 7 1/05/02 16:00 0. 3'4 2 25 :oo 0.960 0.304 2 2/27/03 7:00 0. 2 5i 3 10.00 0.900 O .170 8 8/26/04 2:00 0.248 4 5.00 0.800 0.211 6 10/28/04 16:00 0. 24 6 5 3.00 0.667 0.261 3 1/18/06 16: 00 0, 211 6 2.00 0. 500 0.246 5 10/26/06 0:00 0.18D 7 1. 30 0 .231 0.528 l 1/09/08 6:00 0.110 8 1.10 0. 091 Computed Peaks 0.453 50.00 0.980 . reject Description Project File Worksheet Flow Element Method Solve For Input Data Upstream -Limiting Pipe Capacity Check Worksheet for Circular Channel untitled.fm2 1 Circular Channel Manning's Formula Full Flow Capacity Mannings Coefficient Channel Slope Diameter 0.012 0. 005000 fl/ft 8.00 in Results Depth Discharge Flow Area Wetted Perimeter Top Width Critical Depth Percent Full Critical Slope Velocity Velocity Head Specific Energy Froude Number Maximum Discharge Full Flow Capacity Full Flow Slope 0.67 ft 0.93 els 0.35 ft' 2.09 ft 0.00 ft 046 ft 100.00 0.007573 fl/ft 2.65 fl/s 0.11 ft FULL ft FULL 1.00 cfs 0.93 cfs 0. 005000 fl/ft YrovtPL ("rte-"T C t.o c..fs) f,tc~s 1'~ UQ'!> l.f.f~c.,"< ( o.S3 (fs) 'fo(l 1/tE. 100" io.. 5f -.I'\, Ok V ® Task 5. Mitigation of Existing or Potential Problems The site proposes to direct all new impervious onsite areas to an onsite conveyance system utilizing perforated pipe, thereby promoting a limited about of infiltration in the site soils. Grass-crete is proposed for the driveways, which will retain precipitation in its porous sub-base to be slowly infiltrated. Restoring existing impervious areas to grass and limiting new impervious areas will minimize any potential downstream impact. The existing duplex and concrete drive surfaces will continue to drain to the existing onsite cb located at the property northwest corner. Per the geotechnical report (TIR, Section 6) the site is not suitable for general infiltration. Our recommendation to reroute the upstream drainage to the SE 170th Street drainage system as discussed in Section 4 addresses the all of the relevant drainage complaints listed in Section, Task 2. 4. FLOW CONTROL AND WATER QUALITY FACILITY ANALYSIS AND DESIGN Existing Site Hydrology (Part A) In the existing site hydrology of the 0.394-acre site runoff flows overland. Lots A & B currently developed with the a duplex and associated driving surfaces drain (uncontrolled) to an onsite catch basin ( cb) located at the site northwest comer. The Appendix A Map, "Level I Downstream Analysis Map" shows the downstream drainage condition once the site flow enters the existing northwest comer onsite cb. The Appendix A Map, "T .eve! I Downstream Analysis Map 2" shows the existing and proposed onsite flow paths. Refer to the level one-offsite analysis in Section III of this report for a detailed description of the downstream. Since the remainder of the site is grassed and flat (approximately 2% slope to either the north or south) there is little to no drainage offsite. There are no indications of erosion or drainage patterns that would indicate concentrated onsite drainage to offsite property. Offsite runoff from the south ditch line of SE 170 1h Street concentrates at the northeast onsite inlet and is routed in an existing 21" pipe to the toe of slope at the south property line. This runoff collects at a low spot on the adjacent property to the south. Developed Site Hydrology (Part B) The site proposes to direct all new impervious onsite areas to an onsite conveyance system utilizing perforated pipe and discharging to a proposed SE 170'h Street inlet as part of the frontage improvements. Grass-crete is proposed for the driveways, which will retain precipitation in its porous sub-base to be slowly infiltrated. Restoring existing impervious areas to grass and limiting new impervious areas will minimize any potential downstream impact. The existing duplex and concrete drive surfaces will continue to drain to the existing onsite cb located at the property northwest comer. Per the geotechnical report (Section 6) the site is not suitable for general infiltration. Performance Standards (Part C) The site lies within a Conservation Flow Control Area. The applicable flow control BMP's are perforated pipe and grass-crete as discussed in Section 2. Conveyance calculations are presented in Appendix C. Formal water quality, source or oil control is not applicable. Flow Control System (Part D) No formal control is required. Refer to the Appendix A Exhibit, "Grading & Storrnwater Plan" for BMP's that will mitigate runoff quantity. Water Quality System (Part E) NIA BENSON HEIBHTS PLAT 2-Tl R 2/3/2008 10 5. CONVEYANCE SYSTEMS ANALYSIS AND DESIGN Appendix C includes a sub-areas map and flow calculations which show that the proposed offsite 12"-diameterpipe from proposed CB#J to an existing catch basin in the north side of SE 170th Street adequately conveys the proposed SE 1701h Street frontage improvements, developed site and if need be the redirected total upstream area that contributes offsite flow to the site. Appendix D includes calculations that the proposed onsite system to reroute the upstream offsite drainage through the site has sufficient capacity. 6. SPECIAL REPORTS AND STUDIES Geotechnical investigation of site soils is included in Appendix E. 7. OTHER PERMITS NIA 8. CSWPPP ANALYSIS AND DESIGN ESC Plan Analysis and Design (Part A) Erosion Control BMP's shall consist of a rock construction entrance, silt fencing, seeding or hydroseeding and mulch or jute. Refer to Appendix A Exhibit, "Erosion & Sedimentation Control Map" and included figures detailing this section. In order to prevent erosion and trap sediments within the project site, the following BMPs will be used approximately as shown on the ESC plan: • Clearing limits will be marked by fencing or other means on the ground. • The driveway will be constructed and graveled immediately and the rocked construction entrance will installed. • Runoff will not be allowed to concentrate and no water will be allowed to point discharge onto the slopes. • Silt fencing will be placed along slope contours at the down-slope limit of clearing. SWPPS Plan Design (Part B) NIA BENSON HEIGHTS PLAT 2-TIR 2/3/2008 ll C: . cs ,.,,i . '<) I' .".':""4/,J if, ,.-,,:i.. '":"" a~;~~·HJiMik " • ~ ' ""· " ,ig;; -.,"'Cc • L '.. -. , ), J !·:1.;l ~~ : < ;t:~--; / :~:~ CH;:' B~~T . H\1) "'/ .. i 'i" ,-r~<"' 7 ! ,,fVAS,N•kSS,J PROJECT LIMITS ~ •o ITLE;,$E:. 15'.. X 50' MIN CONSTRUCTION zl + C G a C I / 1i \\ '\\ ', 1 -~2!: 'l'P': l RECORD \IG r,o g 110 10 c · !, / µ, "¥ '\,\., , r ,,-,,1_:5. ,-(0.31 AC) •. 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' "· ' . . \::1 1 1 f:$Y/.\''"L I l , \, ,, , ",~---, _t,si c' ,,,. lj -<-( J ----r----t. ; J '.~ ·. · J. J, .. •),:c',.>: .. '/ .. .'.'j 1' l .. t ,. ,' ',,,{ ' "< " '<.. "'--~, /'··--"H[C fJYP n/ ;p ... , Jl. i ,/ ·.--:-'-...._, , ll "-.J, --,'1-, ·1" ,l>1L-I: ,, ; ~ V•//77!"7::,;;!/ I .,. --·; ~. "' '! I '/ ""I. t,2." i !j :.v.,, .,.L--'.'· .~-.-t, ·~J,~ ,dGU'SE /1' f ,-:..;....., I ' I 4.')'.Ml ~ i lr; ___ [:1· . ''. .. 1-1·,. \ ,J.,...;.,,./ ti· ,j';'" ·c ,1i ' ' '1 \ . f'.,.) :..,w ~....:,, •it: ·,:·!,1::·_·._ .··.) -.' ,·,;· ,Vi'." ._L.,,t:\ / < • --/ ), \ • , 11r''' I'' -1-,..,. , ' , ,, -----------J, __ ,,-\) , . ·1·,.-f~---+--,-, i :~~r: .. ,~~~:{:\_)_{ .... t=\~tJ ,r,gn1g il -\\tV;; 12·\)I(~~~' ,, I ~ :. I O;JI'· ' 0 L.: EROSION & SEDIMENTATION CONTROL PLAN: BENSON HEIGHTS PLAT-2 1 inch 30 30 ft. CJ. I TEMPORARY ESC shall be done on an area covered with crushed rock, and wash water shall drain to a sediment trap or pond. 3. Any sediment that is tracked onto pavement shall be removed immediately by sweeping. The sediment collected by sweeping shall be removed or stabilized onsite. The pavement shall not be cleaned by washing down the street, except when sweeping is ineffective and there is a threat to public safety. If it is necessary to wash the streets, a small sump must be constructed. The sediment would then be washed into the sump where it can be controlled and discharged appropriately. 4. Any quarry spalls that are loosened from the pad and end up on the roadway shall be removed immediately. FIGURE C.3.1.A STABILIZED CONSTRUCTION ENTRANCE INSTALL DRIVEWAY CULVERT IF THERE IS A ROADSIDE OITCH PRESENT. AS -f'.lsR KING COUNTY ROAD STANDARDS 4" -B" OUARRY SPALLS --- GEOTEXTILE---' 12" MIN. THICKNESS~ MULCHING Purpose \ ,." 0, ~t AS PER KING COUNTY ROAD STANDARDS. DRIVEWAYS SHALL BE PAVED TO THE EDGE OF R-0-W PRIOR TO INSTALLATION OF THE CONSTRUCTION ENTRANCE TO AVOID DAMAGING OF' THE ROADWAY IT IS RECOMMENDED THAT THE ENTRANCE BE CROWNED SO THAT RUNOFF DRAINS OFF THE PAO The purpose of mulching soils is to provide immediate temporary protection from erosion. Mulch also enhances plant establishment by conserving moisture, holding fertilizer, seed, and topsoil in place, and moderating soil temperatures. There is an enom1ous variety of mulches that may be used. Only the most common types are discussed in this section. Conditions of Use As a temporary cover measure, mulch should be used: I. On disturbed areas that require cover measures for less than 30 days 2, As a cover for seed during the wet season and during the hot summer months 3. During the wet season on slopes steeper than 3H: IV with more than l O feet of vertical relief ,... ace Water Design Manual -Appendix C C-81 J/2412005 ~ \'\. ~ C 1 e,--. ' I ' t i • -~- C.3. l TEMPORARY ESC 3. 4. Standard strength fabric requires wire backing to increase the strength of the fence. Wire backing or closer post spacing may be required for extra strength fabric if field performance warrants a stronger fence. Where the fence is installed, the slope shall be no steeper than 2H: IV. 5. If a typical silt fence (per Figure C.3.1.E) is used, the standard 4 x 4 trench may not be reduced as long as the bottom 8 inches of the silt fence is well buried and secured in a trench that stabilizes the fence and does not allow water to bypass or undermine the silt fence. Maintenance Standards 1. Any damage shall be repaired immediately. 2. If concentrated flows are evident uphill of the fence, they must be intercepted and conveyed to a sediment trap or pond. 3. It is important to check the uphill side of the fence for signs of the fence clogging and acting as a barrier to flow and then causing channelization of flows parallel to the fence. If this occurs, replace the fence or remove the trapped sediment. 4. Sediment must be removed when the sediment is 6 inches high. 5. If the filter fabric (geotextile) has deteriorated due to ultraviolet breakdown, it shall be replaced. I FIGURE C.3.1.E SILT FENCE JOINTS IN FILTER FABRIC SHALL BE SPLICED AT POSTS. USE STAPLES, WIRE RINGS, OR EQUIVALENT TO ATIACH FABRIC TO POSTS. Fil TER FABRIC --- -l"r:-------;::rT-- I --.......__ MINIMUM4"x4"TRENCH // u ;AX. POST SPAClNG MAY BE INCREASED TO 8' IF WlRE BACKING 1S USED \ BACKFILL TRENCH WITH NATfVE SOIL OR 3/•r-1.s· WASHED GRAVEL 2~x4w WOOD POSTS STEEL FENCE NOTE: FILTER FABRIC FENCES SHALL BE INSTALLED ALONG CONTOUR WHENEVER POSSIBLE POSTS, REBAR, OR EQUIVALENT I 2005 Surface Water Design Manual -Appendix C 112412005 C-87 SECTION C.3 EROSION AND SEDIMENT CONTROL (ESC) MEASURES FIGURE C.3.1.F SILT FEJl,;CE 11\"STALLATION AND MAINTENANCE Dig trench Toe,.in~fabric Stake Reinforce Monitor Maintain and clean C.3.1.7 VEGETATED STRIP 1/24/2005 Purpose Vegetated strips reduce the transport of coarse sediment from a construction site by providing a temporary physical barrier to sediment and reducing the runoff velocities of overland flow. Conditions of Use Vegetated strips may be used downslope of all disturbed areas. Vegetated strips are not intended to treat concentrated flows, nor are they intended to treat substantial amounts of overland flow. Design and Installation Specifications I. The vegetated strip shall consist of a 25-foot minimum width continuous strip of dense vegetation with a permeable topsoil. Grass-covered, landscaped areas are generally not adequate because the volume of sediment overwhelms the grass. Ideally, vegetated strips shall consist of undisturbed native growth with a well-developed soil that allows for infiltration of runoff. 2. The slope within the strip shall not exceed 4H: IV. 3. Tbe uphill boundary of the vegetated strip shall be delineated with clearing limits as specified in Section C.3.1.5 (p. C-86 ). C-88 2005 Surface Water Design Manual -Appendix C \'1,'9 SECTION CJ EROSION AND SEDIMENT CONTROL !ESC1 MEASURES ,,, _·,,, .. Mulch Material Straw Wood Fiber Cellulose Compost Hydraulic Matrices Design and Installation Specifications For mulch materials, application rates, and specifications, see Table C.3.1.A. Note: Thicknesses may be increased/or disturbed areas in or near critical areas or other areas highly susceptible to erosion. ."1; Maintenance Standards 1. The thickness of the mulch cover must be maintained. 2. Any areas that experience erosion shall be re-mulched and/or protected with a net or blanket. If the erosion problem is drainage related. then the drainage problem shall be assessed and alternate· drainage such as interceptor swales may be needed to fix the problem and the eroded area re-mulched . . . TABLE C.3.1.A MULCH STANDARDS AND GUIDELINES . . ·, ... : Quality Standards Application Remarks Rates Air-dried; free from 2"-3" thick: 2-3 Cost-effective protection when applied with adequate undesirable seed and bales per 1000 sf thickness. Hand-application generally requires greater coarse material or 2-3 tons per acre thickness than blown straw. Straw should be crimped to avoid wind blow. The thickness of straw may be reduced by half when used in conjunction with seeding. No growth inhibiting Approx. 25-30 lbs Shall be applied with hydromulcher. Shall not be used factors per 1000 sf or without seed and tackifier unless the application rate is 1000-1500 lbs per at least doubled. Some wood fiber with very long fibers acre can be effective at lower application rates and without seed or tackifier. No visible water or dust 2" thick min , More effective control can be obtained by increasing during handling. Must approx. 100 tons thickness to 3". Excellent mulch for protecting final be purchased from per acre (approx. grades until landscaping because it can be directly supplier with Solid 800 lbs per cubic seeded or tilled into soil as an amendment. Sources for Waste Handling Permit. yard) compost are available from the King County Commission for Marketing Recyclable Materials at (206) 296-4439. This mulch category Apply at rates from The BFM shall not be applied immediately before, during includes hydraulic 3,000 lbs per acre or immediately after rainfall so that the matrix will have (Bonded Fiber slurries composed of to 4,000 lbs per an opportunity to dry for 24 hours after installation. Matrix) wood fiber. paper fiber acre and based on Application rates beyond 2,500 pounds may interfere or a combination of the manufacturers with germination and are not usually recommended for two held together by a recommendations turf establishment. BFM is generally a matrix where all binding system. The fiber and binders are in one bag, rather than having to BFM shall be a mixture mix components from various manufacturers to create a of long wood fibers and matrix. BFMs can be installed via helicopter in remote various bonding agents. areas. They are approximately $1,000 per acre cheaper to install. Chipped Site Average size shall be 2"minimlim This is a cost-effective way to dispose of debris from Vegetation several inches. thickness clearing and grubbing, and it eliminates the problems associated with burning. Generally, it should not be used on slopes above approx. 10% because of its tendency to be transported by runoff. It is not recommended within 200 feet of surface waters. If seeding is expected shortly after mulch, the decomposition of the chipped vegetation may tie up nutrients important to grass establishment. 1/24/2005 2005 Surface Water Design Manual -Appendix C C-82 9. BOND QUANTITIES, FACILITY SUM\'IARIES AND DECLARATION OF COVENANT Declaration of Covenant and Grant of Easement Form (to be filled out at a later time) and the Bond Quantities Worksheet are included in this section. BENSON HEIGHTS PLAT 2-TIR l 2/ l 7/2007 PAGE 1 3 OF 19 Site Improvement Bonu Quantity Worksheet Web date: 2005 ® King County Department of Development & Environmental Services 900 Oakesdale Avenue Southwest Renton, Washington 98055-1219 206-296-6600 TTY 206-296-7217 Project Name: Benson Hei~hts Plat 2 Location: 10801 SE 170th St, Renton WA 98055 Clearing greater than or equal to 5,000 board feet of timber? ~~~~~~ yes If yes, Forest Practice Permit Number: (RCW 76.09) Page 1 of 9 (;. 'Y li-wks-sbq X no For alternate formats, call 206-296-6600. Date: 12/15/2007 Project No.: A07PF003 Activity No.: Note: All prices include labor, equipment, materials, overhead and profit. Prices are from RS Means data adjusted for the Seattle area or from local sources if not included in the RS Means database. Unit prices updated: 02112102 Version: 04122102 Report Date: 12/16/2007 Site Improvement Bo. ___ Quantity Worksheet Web date: /2005 r·-····-·············~ ··-·<·•r· i/. ,,·.·.'•·' ·• •·•'·.· ·••··· RI 111-•••·-··.···_···#ot> ____ F!\T····. •·-······. I i , · \ ,, ..... ·> I i < · / , , · '••·• Appl l'e~!<!niL J ~ EROSION/S.EDIMENtCONTROC •> N~m~~H• lit\.J < r ·.::,.,)_·:":::(: ~-:-.-:·-_.;, .. ;;;::::·::::=: :.:: =:.::: :: •:-·:-::·,. .... Backfill & compaction-embankment ESC-1 $ 5.62 CY Check dams, 4" minus rock ESC-2 SWDM 5.4.6.3 $ 67.51 Each Crushed surfacing 1 1 /4" minus ESC-3 WSDOT 9-03.9(3) $ 85.45 CY Ditching ESC-4 $ 8.08 CY Excavation-bulk ESC-5 $ 1 50 CY Fence, silt ESC-<l SWDM 5.4.3. 1 $ 1.38 LF 106 1 146 Fence, Temporary (NGPE) ESC-7 $ 1.38 LF Hydroseeding ESC-1! SWDM 5.4.2.4 $ 0.59 SY 667 1 394 Jute Mesh ESC-9 SWDM 5.4.2.2 $ 1.45 SY Mulch, by hand, straw, 3" deep ESC-10 SWDM 5.42.1 $ 2 01 SY Mulch, by machine, straw, 2" deep ESC-11 SWDM 5.4.2. 1 $ 0.53 SY Piping, temporary, CPP, 6" ESC-12 $ 1070 LF Piping, temporary, CPP, 8" ESC-13 $ 16. 10 LF P1p1ng, temporary, CPP. 12" ESC-14 $ 2070 LF Plastic covering, 6mm thick, sandbagged ESC-15 SWDM 5.4 2 3 s 2.30 SY Rip Rap, machine placed; slopes ESC-16 WSDOT 9-13. 1 (2) $ 39 08 CY Rock Construction Entrance, 50'x15'x1' ESC-17 SWDM 5.4.41 $ 1,464.34 Each 1 1 14 64 Rock Construction Entrance, 100'x15'x1' ESC-18 SWDM 5.4.41 $ 2,928.68 Each Sediment pond riser assembly ESC-19 SWDM 5.4.5.2 $ 1,949.38 Each Sediment trap, 5' high berm ESC-20 SWDM 5.4.5. 1 $ 17.91 LF Sed. trap, 5' high, riprapped spillway berm section ESC-21 SWDM 5.4.5. 1 $ 68.54 LF Seeding, by hand ESC-22 SWDM 5.4.2.4 $ 0.51 SY Sodding, 1" deep, level ground ESC-23 SWDM 5.4.2 5 $ 6.03 SY Sodding, 1" deep, sloped ground ESC-24 SWDM 5.4.2.5 $ 7.45 SY TESC Supervisor ESC-25 $ 74.75 HR 4 1 299 SWDM 5.4.7 $ 97.75 HR Water truck, dust control ESC-26 WRITELir,mTEIVIS •Mfisee natie ~ ••• .,.-.,~ l<I SJ ······ .•...•. , ,'' , , ,. ~ ~ Page 2 of 9 11-wks-sbq Each ESC SUBTOTAL: 30% CONTINGENCY & MOBILIZATION: ESC TOTAL: COLUMN: $ 2,303.15 $ 690.95 $ 2,994.10 A Unit prices updated: 02112102 Version• 04122102 Report Date: 12/16/2007 GENERALiiEMs·•····· < > ·'No; Backfill & Compaction-embankment GI -1 Backfill & Compaction-trench GI -2 Clear/Remove Brush, by hand GI -3 Clearing/Grubbing/Tree Removal GI -4 Excavation -bulk GI -5 Excavation -Trench GI -6 Fencing, cedar, 6' high GI -7 Fencing, chain link, vinvl coated, 6' high GI -8 Fencing, chain link, gate, vinyl coated, 21 GI -9 Fencing, split rail, 3' high GI -10 Fill & compact -common barrow GI -11 Fill & corn pact -gravel base GI -12 Fill & corn pact -screened topsoil GI -13 Gabion, 12" deep, stone filled mesh GI -14 Gabion, 18" deep, stone filled mesh GI -15 Gab1on, 36" deep, stone filled mesh GI -16 Grading, fine, by hand GI -17 Grading, fine, with grader GI -18 Monuments, 3' long GI -19 Sensitive Areas Sign GI -20 Sodding, 1" deep, sloped ground GI -21 Surveying, line & grade GI -22 Surveying, lot location/lines GI -23 Traffic control crew ( 2 flaggers ) GI -24 Trail, 4" chipped wood GI -25 Trail, 4" crushed cinder GI -26 Trail, 4" top course GI -27 Wall, retaining, concrete GI -28 Wall, rockery GI -29 Page 3 of 9 ~(' *KCC 27 A authorizes only one bond reduction. li-wks-sbq Site Improvement Be •.· .. , ...... ' t ·············· ... .......... == a....:_·::..::::_ i_::::·::::·· ::. " $ 562 CY $ 8.53 CY $ 036 SY $ 8,876.16 Acre $ 1.50 CY $ 4.06 CY $ 1855 LF $ 1344 LF $ 1,271.81 Each $ 1212 LF $ 22.57 CY $ 25.48 CY $ 37 85 CY $ 54.31 SY $ 74 85 SY $ 13248 SY $ 202 SY $ 0.95 SY $ 135.13 Each $ 2.88 Each $ 7.46 SY $ 788.26 Day $ 1,556.64 Acre $ 85.18 HR $ 7.59 SY $ 8.33 SY $ 8.19 SY $ 44.16 SF $ 949 SF SUBTOTAL Quantity Worksheet · fi.iM~P!l!!lit • · .. · .. :.:: ... : .... :: .. : .. :: .. : ... ". "' l· •·· • · Roadlmi:ir<Newents ··•· .·· · &. tir~iii~il~l'~~1i~i"" --,--,.--.,- 164 139.89 58 164 66.58 58 111 788.26 0.31 4 340 72 1,335.46 494.74 235.48 2,505.27 48256 Web dat 1/2005 · • ·•· • •• < 9u,fo1i1Yc:ort11>!<>1:e~ .· ·. · •··· •i• isondReouctionr.··· 3,718 05 Unit prices updated 02/12/02 Version 4/22/02 Report Date• 12/16/2007 ltdAO IMPROVEMENT i<<:·-: :·-:1:12;·· AC Grinding, 4' wide machine o::: 1 OOOsy RI -1 AC Grindin~. 4' wide machine 1000-200Q RI -2 AC Grindin~ 4' wide machine > 2000sy I RI -3 AC Removal/Disposal/Repair Rl-4 Barricade, type I RI· 5 Barricade, type Ill (Permanent) RI· 6 Curb & Gutter, rolled RI· 7 Curb & Gutter! vertical RI -8 Curb and Gutter, demolition and dis_eosall RI -9 Curb. extruded asp_halt IRI -10 Curb, extruded concrete RI -11 Sawcut, asphalt, 3" depth Rl-12 Sawcut, concrete, per 1" depth RI -13 Sealant. as_e_halt [RI -14 Shoulder, AC, ( see AC road unit price) IRI -15 Shoulder, ~ravel, 4" !hick RI -16 Sidewalk1 4" thick RI -17 Sidewalk, 4" thick, demolition and dis_e_os~RI -18 Sidewalk, 5" thick IRI -19 Sidewalk_, __ SU thick, d~molition and dis.e_os~Rl -20 Sign, handicap IRI -21 Striping, per stall I RI . 22 Striping, thermoplastic, ( for crosswalk) IRI -23 StripinE, 4" reflectorized line IRl -24 Page 4 of 9 ~ <> ~Kee 27A authorizes only one bond reduction li-wks-sbq Site Improvement Be Quantity Worksheet Web dat ~1/2005 --·-·-·· · ·-· ··-::·: l'utu,e Public ·----· • iR@~i,@~~.,;;,~M~Li- -~p,alriag: .. ,,;'"'C: • • -, --m-n : ::} :, :61:i~rtt: I·:::···' ' • • Ci'>.~f)';':C ,• ,; ,' ,; lG9Q)P1.¢t~ UN!Ptl"'l-l \JDI\ I QQMV+· c~. 1 -@~nrJ era":~;~{ -?t ~=::., I ··-·· · 1 QuaiiC d 'RedUdiOiif·. ··•• cw:· SY $ 5.75 SY $ 1.38 SY - $ 41.14 SY $ 30.03 LF $ 45.05 LF $ 13.27 LF $ 9 69 LF $ 13.58 LF $ 2.44 LF $ 2 56 LF $ 1.85 LF $ 1.69 LF $ 0 99 LF s SY $ 7 53 SY $ 3052 SY - $ 27.73 SY $ 34.94 SY $ 3465 SY -- $ 85.28 Each $ 5.82 Each $ 2 38 SF $ 0.25 LF SUBTOTAL - 40.2 181 181 181 181 1,653.83 2,401.87 334.85 179.19 5,524.12 10,093.86 -·- Unit prices updated: 02/12/02 Version: 4/22/02 Report Date: 12/16/2007 Site Improvement Bo ... --1 Quantity Worksheet IFtitµrif P.t!bHC::.· .. : i ~?a~)~frtjY~ffo~klii::t. :. ,: &, Dt~~~Q~fF~i1:itie~· :·: '·': Q.,.nJ. . . Caj(: I kdAb $UR FACiNG\ +I' R~b~ ;i,2li 1>a¥~ t 1 .tl'fop loD~~i f9r ,~j ko/j:fi ijf fjpqk~ s\i,i,<\~ t.1,f t<>i, ,;oil~~F > · . For KCRS '93, (additional 2.5" base1 add! RS -1[ $ 3.60 I SY AC Overlay, 1.5" AC I RS -21 $ 7.39 I SY AC Overlay, 2" AC RS -3 $ 8.75 SY AC Road, 2", 4" rock, First 2500 SY RS -4 $ 17.24 SY AC Road, z·, 4" rock, Qtv. over 2500SY RS -5 $ 13.36 SY AC Road, 3", 4" rock, First 2500 SY RS -6 $ 19.69 SY AC Road, 3", 4" rock, Qty over 2500 SY RS -7 $ 15.81 SY AC Road, 5", First 2500 SY RS -8 $ 14.57 SY ACRoad,5",Qty.Over2500SY RS-9 $ 13.94 SY AC Road, 6", First 2500 SY RS -11 $ 16.76 SY AC Road, 6", Qty. Over 2500 SY RS -11 $ 16.12 SY Asphalt Treated Base, 4" thick RS -1: S 9.21 SY Gravel Road. 4" rock, First 2500 SY RS -1: $ 11 .41 SY Gravel Road, 4" rock, Qty. over 2500 SY RS -1 · $ 7 53 SY PCC Road, G", no base, over 2500 SY RS -1!° $ 21 51 SY PCC Road, 6", no base, over 2500 SY RS -1 $ 21.87 SY Thickened Edge RS -1 $ 6.89 LF Page 5 of 9 SUBTOTAL ~ ~ *KCC 27A authorizes only one bond reduction li-wks-sbq Web dale: 11/21/2005 Unit prices updated: 02/12/02 Version: 4/22/02 Report Date: 12/16/2007 Site Improvement Bor--l Quantity Worksheet · :· fij•9r~):>µ~lJ~.::·::: · . • •••• ••.• I ..•..• ·.·.•Ri~~/111.er<>~(!J'!\~~,,.i····· ::=:t/Of3fo~9~·.f~{;jfitie~:,::- • ouant · ¢Qi\fT Web date: 11/21/2005 oRAiNAo E?1gefi• ii!;&rtli,i~i&i #1~J~6 eiPl!!.N1·~·•ti, 1::ijbit~1~J\)·••·••··•·•·.·· •· . ::: )fJb.Wl~H:J~i¢~{-j;;;J;:;r:4i:fci1Jfai.;t{~~;J/ri~JYA;h~~:~ff~~@$:~tinr~:Mi~Jb~ ~:~Jiid:·JiW>> :' :: . Access Road, RID D -1 Bollards -fixed D -2 Bollards -removable D -3 ~ (CBs include frame and lid) CB Type I D-4 CB Type IL D -5 CB Type II. 48" diameter D-6 for additional depth over 4' D-7 CB Type ff, 54" diameter D-8 for additional depth over 4' D -9 CB Type 11, 60" diameter D -10 for additional depth over 4' D-11 CB Type 11, 72" diameter D -12 for additional depth over 4' D -13 Throuah-curb Inlet Framework (Add) D -14 Cleanout, PVC, 4" D -15 Cleanout, PVC, 6" D -16 Cleanout, PVC, 8" D -17 Culvert, PVC, 4" D -18 Culvert, PVC, 6" D -19 Culvert, PVC, 8" D -20 Culvert, PVC, 1Z' D -21 Culvert, CMP, 8" D -22 Culvert, CMP, 12" D -23 Culvert, CMP, 15" D -24 Culvert, CMP, 18" D -25 Culvert, CMP, 24" D-26 Culvert, CMP, 30" D-27 Culvert, CMP, 36" D -28 Culvert, CMP, 48" D-29 Culvert, CMP, 60" D -30 Culvert, CMP, 72" D -31 %Page6 of 9 'KCC 27 A authorizes only one bond reduction. !i~wks-sbq $ 16.74 $ 240.74 $ 452.34 $ 1,257.64 $ 1,433.59 $ 2,033.57 $ 436.52 $ 2,192.54 $ 486.53 S 2,351.52 s 53654 $ 3,212.64 s 692.21 $ 366.09 $ 130.55 $ 174.90 $ 224.19 $ 8.64 $ 12.60 $ 13.33 $ 21.77 $ 17.25 $ 26.45 $ 32.73 $ 37.74 $ 53.33 $ 71.45 $ 112.11 $ 140.83 $ 235.45 $ 302.58 SUBTOTAL SY Each Each Each Each Each FT Each FT Each FT Each FT Each Each Each Each LF LF LF LF LF LF 27.7 LF LF LF LF LF LF LF LF 1,257.64 732.67 1,990.31 66 879.78 879.78 Unit prices updated, 02/12/02 Version: 4/22/02 Report Date, 12/16/2007 Site Improvement Br ---i Quantity Worksheet -I 1 · ... ············•(•· • ... • · rn~: > 1:1n~ Rti<ii\ =·:.U.M:-": !Culvert, DI, B" D -32 $ 40.00 LF Culvert, Concrete, 12" D -33 $ 30.05 LF Culvert, Concrete, 15" D -34 $ 37.34 LF Culvert, Concrete, 18" D -35 $ 44.51 LF Culvert, Concrete, 24" D -36 $ 61.07 LF Culvert, Concrete, 30" D -37 $ 104.18 LF Culvert, Concrete, 36" D-38 $ 137.63 LF Culvert, Concrete, 42" D -39 $ 158.42 LF Culvert, Concrete, 48" D -40 $ 175.94 LF Culvert, CPP, 6" D -41 $ 10.70 LF Culvert, CPP, 8" D -42 $ 16.10 LF Culvert, CPP, 12" D -43 $ 20.70 LF Culvert. CPP, 15" D -44 $ 2300 LF Culvert, CPP, 18" D -45 $ 27.60 LF Culvert, CPP, 24" D -46 $ 36.80 LF Culvert, CPP, 30" D -47 $ 48.30 LF Culvert, CPP, 36" D -48 $ 55.20 LF Ditching D -49 $ 8.08 CY Flow Dispersal Trench (1,436 base+) D -50 $ 25.99 LF French Drain (3' depth) D -51 $ 22.60 LF Geotextile, laid in trench, polypropylene D -52 $ 2.40 SY Infiltration pond testing D -53 $ 74.75 HR Mid-tank Access Riser, 48" dia, 6' deep D -54 $ 1,605.40 Each Pond Overflow Spillway D -55 $ 14.01 SY Restrictor/Oil Separator, 12" D -56 $1,045.19 Each Restrictor/Oil Separator, 15" D -57 $ 1,095.56 Each Restrictor/Oil Separator, 18" D-58 $ 1,146.16 Each Riprap, placed D -59 $ 39.08 CY Tank End Reducer (36" diameter) D -60 $ 1,000.50 Each Trash Rack, 12" D -61 $ 211.97 Each Trash Rack, 15" D -62 $ 237.27 Each Trash Rack, 18" D -63 $ 268.89 Each Trash Rack, 21" D -64 $ 306.84 Each Page 7 of 9 SUBTOTAL ~ f1,\ *KCC 27A authorizes only one bond reduction li-wks-sbq Web date: 11/2112005 . .• • !fo~d ~Wucli~n' I 11 I ouant>I ¢<iMJ1Ji<lh .• > . cos1 • 1280 1280 Uni1 prices upda1ed• 02/12/02 Version 4/22/02 Report Da1e• 12/16/2007 Site Improvement Bo·--• Quantity Worksheet << ""TS"TS i< + + uiiifi'r,;;., · 1 vM I i;iii<!nt T PARKING Lot siiat;:O:¢ji\lG=<=:=· · == No. 2" AC, 2" top course rock & 4" borrow PL-1 $ 15.84 SY 2" AC, , .5" top course & 2.5" base cour PL-2 $ 17.24 SY 4" select borrow PL -3 $ 4.55 SY 1.5" to.e_ course rock & 2.5" base course PL-4 $ 11.41 SY II " :MS (Such as detention/water quality vaults.) No. Area Drain Wl-1 $ 450.00 Each Asphalt Removal Wl-2 $ 8.00 SY Wl-3 CY Wl-4 LF Wl-5 FT Wl-6 WI-7 Wl-8 Wl-9 Wl-10 SUBTOTAL SUBTOTAL (SUM ALL PAGES): 30% CONTINGENCY & MOBILIZATION: Page 8 of 9 ~ 1,. *KCC 27A authorizes only one bond reduction. li-wks-sbq GRANDTOTAL: COLUMN: •>· ·_:_pri~: B :·: :: :f )-\r:r~*fffr~_bJ~c / !) ( ·: .. -RQ~d 1$J)<9Vetn~l~ I \'jtb.f.~t~~g~: F;difo~$:. :. > ... Q\)~11b Cos! -_ 13,419.62 4,025.89 17,445.50 C 162 D Web date· 11n112oos .---~ 450.00 1,296.00 1,746.00 7,623 83 2,287.15 9,910.98 E Unit prices updated: 02/12/02 Version 4/22/02 Report Date: 12/16/2007 Site Improvement L"'nl.1 Quantity Worksheet Web ,/2005 - Original bond computations prepared by: Name: Benson Hei.9.hts Plat 2 Date: _____________ _ PE Registration Number: Firm Name: Address: Stabilization/Erosion Sediment Control (ESC) Existing Right-of-Way Improvements (A) (B) Future Public Road Improvements & Drainage Facilities! (C) Private Improvements (D) Calculated Quantity Completed Total Right~of Way and/or Site Restoration Bond*/** (First $7,500 of bond' shall be cash.) Perfonnance Bond' Amount (A+B+C+D) = TOTAL Reduced Performance Bond' Total ... Maintenance/Defect Bond' Total NAME OF PERSON PREPARING BOND' REDUCTION: (A+B) (T) Tel.#: _____________ _ Project No: A07PF003 ROAD IMPROVEMENTS & DRAINAGE FACILITIES FINANCIAL GUARANTEE REQUIREMENTS PERFORMANCE BOND' PUBLIC ROAD & DRAINAGE AMOUNT BOND' AMOUNT MAINTENANCE/DEFECT BOND' REQUIRED AT RECORDING OR $ 2,994.1 TEMPORARY OCCUPANCY"' $ $ 17,445.5 $ 9,911.0 (E) $ $ 2,994.1 $ 30,350.6 Tx0.30 $ 9,105.2 OR Mm1mum bond' amount 1s $1000: (T-E) $ 30,350.6 Use larger of I x30% or (1-E) (B+C) x 0.25 = $ 4,361.4 Date: * NOTE: The word "bond" as used in this document means any financial guarantee acceptable to King County. ** NOTE: KCC 27A authorizes right of way and site restoration bonds to be combined when both are required. ~ ~ The restoration requirement shall include the total cost for all TESC as a minimum, not a maximum. In addition, corrective work, both on-and off-site needs to be included. Quantities shall reflect worse case scenarios not just minimum requirements. For example, if a salmonid stream may be damaged, some estimated costs for restoration needs to be reflected in this amount. The 30% contingency and mobilization costs are computed in this quantity . • ,.. NOTE: Per KCC 27A, total bond amounts remaining after reduction shall not be less than 30% of the original amount (T) or as revised by major design changes. SURETY BOND RIDER NOTE: If a bond rider is used, minimum additional performance bond shall be l $ 27,356.5 ! (C+D)-E REQUIRED BOND' AMOUNTS ARE SUBJECT TO REVIEW AND MODIFICATION BY DDES Page 9 of 9 li-wks-sbq Check out the DDES Web site at www.metrokc.gov/ddes Unit prices updated: 02/12/02 Version: 4/22/02 Report Date: 12/16/2007 RECORDING REQUESTED BY AND WHEN RECORDED MAIL TO: RECORDING COVER SHEET DECLARATION OF COVENANT AND GRANT OF EASEMENT Grantor: --------------------- 0 rant e e: --------------------- Legal Description:------------------------ Additional Legal(s) on:----------------------- Assessor's Tax Parcel ID#:--------------------- DECLARATION OF COVENANT AND GRANT OF EASEMENT For Stormwater Flow Control Best Management Practices INCONSIDERATION of the following approved King County (check one of the following) CJ residential building permit, CJ commercial building permit, CJ clearing and grading permit, CJ subdivision permit, or O short subdivision permit for Application No. ________ _ relating to real property ("Property") legally described as follows: The Grantor(s), the owner(s) in fee of the above described parcel ofland, hereby covenants with King County, a political subdivision of the state of Washington its successors in interest and assigns ("King County"), that it will observe, consent to, and abide by the conditions and obligations set forth and described in Paragraphs l and 2 and 4 through 7 below with regard to the Property, and hereby grants an access easement on and to the Property to King County, for the purposes described in Paragraph 3 below. Grantor(s) hereby grants, covenants, and agrees as follows: 1. Owner(s) of the Property shall retain, uphold, and protect the stormwater management devices, features, pathways, limits, and restrictions, known as flow control best management practices ("Flow Control BMPs"), shown on the approved Flow Control BMP Site Plan for the Property attached hereto and incorporated herein as Exhibit A. 2. Owner(s) of the Property shall at their own cost, operate, maintain, and keep in good repair, the Property's Flow Control BMPs as described in the approved Design and Maintenance Details for each BMP attached hereto and incorporated herein as Exhibit B. 2 ,. .. 3. King County shall have a nonexclusive perpetual access easement on the Property in order to ingress and egress over the Property for the sole purposes of inspecting and monitoring the Property's Flow Control BMPs, and if applicable in accordance with the terms of Paragraph 4 below, performing any corrective work required to bring the Property's Flow Control BMPs into compliance with Title 9 of the King County Code. 4. If King County determines that maintenance, repair, restoration, and/or mitigation work is required to be done to the Flow Control BMPs and has not been performed by the Property owner(s), the Director of the Water and Land Resources Division of the King County Department of Natural Resources and Parks shall give notice to the Property owner (s) of the specific maintenance, repair, restoration, and/or mitigation work (Work) required pursuant to Title 9 of the King County Code. The Manager shall also set a reasonable time in which the Work is to be completed by the Property owner(s). If the Work is not completed within the time set by the Division Director, King County may perform the required Work. Written notice will be sent to the Property owner(s) stating King County's intention to perform the Work. Performance of the Work by King County will not commence until at least seven (7) days after such notice is mailed. If. within the sole discretion of the Water and Land Resources Division Director. there exists an imminent or present danger, the 0"11er hereby waives the seven (7) day notice period and the Work will begin immediately. 5. The owner(s) of the Property shall assume all responsibility for the cost of any Work required to be done to the Flow Control BMPs. Such responsibility shall include reimbursement to King County within thirty (30) days of the receipt of the invoice for any such Work performed by King County in accordance with the terms of Paragraph 3 above. Overdue payments will require payment of interest at the current legal rate as liquidated damages. In the event that King County does not receive reimbursement within the required time frame, it may elect to place a lien on the 3 Property and act upon the lien in accordance with the terms and procedures specified in Chapter 23.40 of the King County Code, as amended from time to time. If legal action is taken to enforce the provisions of this Paragraph, the prevailing party is entitled to costs and attorney's fees. 6. Apart from performing routine landscape maintenance, the Property owner(s) is (are) hereby required to obtain written approval from the Water and Land Resources Division Manager of the King County Department of Natural Resources and Parks prior to performing any alterations or modifications to the Flow Control BMPs. iv1y notice or consent required to be given or otherwise provided for by the provisions of this Declaration of Covenant and Grant of Easement shall be effective upon personal delivery, or three (3) days after mailing by Certified Mail, return receipt requested, whichever occurs sooner. 7. This Declaration of Covenant and Grant of Easement is intended to promote the etlicient and effective management of surface water drainage on the Property, and it shall inure to the benefit of all the citizens of King County, its successors and assigns. This Declaration of Covenant and Grant of Easement shall run with the land and be binding upon Grantor(s), and Grantor's (s') successors in interest and assigns. 8. This Declaration of Covenant and Grant of Easement may be terminated by execution of a written agreement by Grantor(s) and King County expressing their mutual agreement to terminate this Declaration of Covenant and Grant of Easement. 4 · L ,•, enant and Grant of Easement is executed this ,:;.T, ------_____ .20~ By -----------------~ I ts --------------- By __________________ _ Its --------------- STA TE OF\\ .\SHT',;GTON) )SS COLT\'TY OF Kl'\G ) On this day of . 20 . before me. the undersigned, a Notary Public in and for the State of , duly commissioned and sworn personally appeared . to me known to be the individual described in and who executed the foregoing instrument, and acknowledged to me that he signed and sealed the said instrument as h free and voluntary act and deed for the uses and purposes therein mentioned. W1TNESS my hand and official seal hereto affixed the day and year in this certificate abow written. Printed name Notary Public in and for the State of Washington, residing at -------------- My appointment expires--------- 5 10. OPERATIONS AND MAINTENANCE MANUAL Operations and Maintenance Manual is included in this section. BENSON HEIGHTS PLAT 2-TIR 1211 7/2007 PAGE 14 OF 1 g KING COUKTY, WASHINGTON, SURFACE WATER DESlGN >1ANUAL KING COL>ITY, WASHINGTON SURFACE WATER DESIGN MANUAL APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL, CONVEYANCE AND WQ FACILITIES Section No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Subject Detention Ponds Infiltration Facilities Detention Tanks and Vaults Control Structure/ Flow Restrictor Catch Basins Debris Barriers Energy Dissipaters Fencing Gates Conveyance Pipes and Ditches Grounds (Landscaping) Access Roads Basic Biofiltration Swale Wet Biofiltration Swale Filter Strip Wetpond Wetvault Sand Filter Pond Sand Filter Vault StormFilter® StormFilter® (Cartridge Type) Baffle Oil/Water Separator Coalescing Plate Catch Basin Insert 1/24/2005 APPENDIX A MANTENANCE REQUIREMENTS FLOW CO'ITROL. CONVEYANCE, AND WQ FACILITIES NO. 5 -CATCH BASINS -•aintenance Defect or Problem Conditions When Maintenance Is Needed Results Expected When 1ponent Maintenance is performed -~neral Trash & Debris Trash or debris of more than Y2 cubic foot which No Trash or debris located (Includes Sediment) is located immediately in front of the catch basin immediately in front of catch basin opening or is blocking capacity of the basin by opening. more than 10%. Trash or debris (in the basin) that exceeds 1'3 the No trash or debris in the catch depth from the bottom of basin to invert the basin. lowest pipe into or out of the basin. Trash or debris in any inlet or outlet pipe blocking 1nlet and outlet pipes free of trash or more than 1.\ of its height. debris. Dead animals or vegetation that could generate No dead animals or vegetation odors that could cause complaints or dangerous present within the catch basin. gases (e.g .. methane). Deposits of garbage exceeding 1 cubic foot in No condition present which would volume. attract or support the breeding of insects or rodents. Structure Damage to Comer of frame extends more than 3/. inch past Frame is even with curb. Frame and/or Top curb face into the street (If applicable). Slab Top slab has holes larger than 2 square inches Top slab is free of holes and cracks. or cracks wider than:,.;, inch (intent is to make sure all material is running into basin). Frame not sitting flush on top slab, i.e., Frame is sitting flush on top slab. separation of more than J/. inch of the frame from the top slab. Cracks in Basin Cracks wider than Yi ,nch and longer than 3 feet, Basin replaced or repaired to design Walls/Bottom any evidence of soil particles entering catch standards. basin through cracks, or maintenance person judges that structure is unsound. Cracks wider than 1/i inch and longer than 1 foot No cracks more than 1/4 inch wide at at the joint of any inlet/outlet pipe or any the joint of inlet/outlet pipe. evidence of soil particles entering catch basin through cracks Settlement/ Basin has settled more than 1 inch or has rotated Basin replaced or repaired to design Misalignment more than 2 inches out of alignment. standards. Fire Hazard Presence of chemicals such as natural gas, oil No flammable chemicals present. and gasoline. Vegetation Vegetation growing across and blocking more No vegetation blocking opening to than 10% of the basin opening. basin. Vegetation growing in inlet/outlet pipe joints that No vegetation or root growth is more than 6 inches tall and less than 6 inches present. apart. Pollution Nonflammable chemicals of more than Yz cubic No pollution present other than foot per three feet of basin length. surface film. Catch Basin Cover Cover Not in Place Cover is missing or only partially in place. Any Catch basin cover is closed open catch basin requires maintenance. Locking Mechanism Mechanism cannot be opened by on Mechanism opens with proper tools. Not Working maintenance person with proper tools. Bolts into frame have less than Y:i inch of thread. Cover Difficult to One maintenance person cannot remove \id after Cover can be removed by one Remove applying 80 lbs. of lift; intent is keep cover from maintenance person. sealing off access to maintenanc_e. Ladder Ladder Rungs Unsafe Ladder is unsafe due to missing rungs, Ladder meets design standards and misalignment, rust. cracks, or sharp edges. allows maintenance person safe access. 1124/2005 2005 Surface Water Design Manual~ Appendix A A-6 APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL. CONVEYANCE. AND WQ FACILITIES NO. 5-CATCH BASINS ~aintenance Defect or Problem Conditions When Maintenance is Needed Results Expected When / 1ponent Maintenance is performed tal Grates Unsafe Grate Grate with ope nrng wider than 7 IB inch. Grate opening meets design (If Applicable) Opening standards. Trash and Debris Trash and debris that rs blocking more than 20% Grate free of trash and debris. of grate surtace Damaged or Missing. Grate missing or broken member(s) of the grate. Grate is in place and meets design standards. NO. 6 -DEBRIS BARRIERS (E.G., TRASH RACKS) Maintenance Defect or Problem Condition When Maintenance is Needed Results Expected When Component Maintenance is Performed. General Trash and Debris Trash or debris that is plugging more than 20% Barrier clear to receive capacity of the openings in the barrier. flow. r,.,\etal Damaged/Missing Bars are bent out of shape more than 3 inches. Bars in place with no bends more Bars. than~ inch. Bars are missing or entire barrier missing. Bars in place according to design. Bars are loose and rust is causing 50% Repair or replace barrier to design deterioration to any part of barrier. standards. j NO. 7 -ENERGY DISSIPATERS aintenance Defect or Problem Conditions When Maintenance is Needed Results Expected When Component Maintenance Is Performed. External: Rock Pad Missing or Moved Only one layer of rock exists above native soil in Replace rocks to design standards. Rock area five square feet or larger, or any exposure of native soi I. Dispersion Trench Pipe Plugged with Accumulated sediment that exceeds 20% of the Pipe cleaned/flushed so that it Sediment design depth. matches design. Not Discharging Visual evidence of water discharging at Trench must be redesigned or Water Properly concentrated points along trench {normal condition is a ''sheet flow" of water along trench). rebuilt to standards. Intent is to prevent erosion damage. Perforations Plugged. Over 1h of perforations in pipe are plugged with Clean or replace perforated pipe. debris and sediment. Water Flows Out Top Maintenance person observes water flowing out Facility must be rebuilt or of ~Distributor" Catch during any storm less than the design storm or redesigned to standards. Basin. its causing or appears likely to cause damage. Receiving Area Over-Water in receiving area is causing or has No danger of landslides. Saturated . potential of causing landslide problems. Internal: Manhole/Chamber Worn or Damaged Structure dissipating fiow deteriorates to % or Replace structure to design Post. Baffles, Side of original size or any concentrated worn spot standards. Chamber exceeding one square foot which would make structure unsound. 2005 Surface Water Design Manual -Appendix A 1124/2005 A-7 APPENDIX A MAINTENANCE REQUIREME>sTS FOR FLOW CONTROL. CONVEYANCE, AND WQ F ACJLITIES NO. 10-CONVEYANCE PIPES AND DITCHES · ""1aintenance Defect or Problem Conditions When Maintenance Is Needed Results Expected When :>mponent Maintenance Is Pertormed es Sediment & Debris Accumulated sediment that exceeds 20% of the Pipe cleaned of all sediment and diameter of the pipe. debris. Vegetation Vegetation that reduces free movement of water All vegetation removed so water through pipes. flows freely through pipes Damaged Protective coating 1s damaged: rust is causing Pipe repaired or replaced more than 50% deterioration to any part of pipe. Any dent that decreases the cross section area Pipe repaired or replaced of pipe by more than 20% Open Ditches Trash & Debris Trash and debris exceeds 1 cubic foot per 1,000 Trash and debris cleared from square feet of ditch and slopes. ditches. Sediment Accumulated sediment that exceeds 20% of the Ditch cleaned/flushed of all design depth. sediment and debris so that it matches design. Vegetation Vegetation that reduces free movement of water Water flows freely through ditches. through ditches. Erosion Damage to See "Detention Ponds" Table No. 1 See MDetention Ponds" Table No. 1 Slopes Rock Lining Out of Maintenance person can see native soil beneath Replace rocks to design standards. Place or Missing (If the rock lin·1ng. Applicable). I NO. 11 -GROUNDS (LANDSCAPING) laintenance Defect or Problem Conditions When Maintenance ls Needed Results Expected When omponent Maintenance is Performed General Weeds Weeds growing in more than 20% of the Weeds present in less than 5% of (Nonpoisonous, not landscaped area (trees and shrubs only). the landscaped area. noxious) Safety Hazard Any presence of poison ivy or other poisonous No poisonous vegetation present in vegetation. landscaped area. Trash or Utter Paper, cans. bottles, totaling more than 1 cubic Area clear of litter. foot within a landscaped area (trees and shrubs only) of 1,000 square feet. Trees and Shrubs Damaged Limbs or parts of trees or shrubs that are split or Trees and shrubs with less than 5% broken which affect more than 25% of the total of total foliage with split or broken foliage of the tree or shrub. limbs. Trees or shrubs that have been blown down or Tree or shrub in place free of injury. knocked over. Trees or shrubs which are not adequately Tree or shrub in place and supported or are leaning over. causing exposure adequately supported; remove any of the roots. dead or diseased trees. 2005 Surface Water Design Manual -Appendix A 1/24/2005 A-9 APPENDTX A MAJNTE1'ANCE REQUIREMENTS FLOW co;;TROL. CONVEYANCE. AND WQ FACILITIES NO. 12 -ACCESS ROADS ·~aintenance Defect or Problem Condition When Maintenance is Needed Results Expected When mponent Maintenance is Performed neral Trash and Debris Trash and debris exceeds 1 cubic foot per 1,000 Roadway free of debris which could square feet (i.e., trash and debris would fill up damage tires. one standards srze garbage can), Blocked Roadway Debris which could damage vehicle tires (glass Roadway free of debris which could or metal). damage tires. Any obstruction which reduces clearance above Roadway overhead clear to i 4 feet road surface to less than 14 feet. high. Any obstruction restricting the access to a 10-to Obstruction removed to allow at 12-foot width for a distance of more than 12 feet least a 12-foot access. or any point restricting access to less than a 10- foot width. Road Surface Settlement. Potholes. When any surface defect exceeds 6 inches in Road surface uniformly smooth with Mush Spots. Ruts depth and 6 square feet in area. In general, any no evidence of settlement, potholes, surface defect which hinders or prevents mush spots, or ruts. maintenance access. Vegetation in Road Weeds growing in the road surface that are more Road surface free of weeds taller Surface than 6 inches tall and less than 6 inches tall and than 2 inches. less than 6 inches apart within a 400-square foot area. Modular Grid Build-up of sedi11ent mildly contaminated with Removal of sediment and disposal Pavement petroleum hydrocarbons. in keeping with Health Department recommendations for mildly contaminated soils or catch basin sediments. Shoulders and Erosion Damage Erosion within 1 foot of the roadway more than 8 Shoulder free of erosion and Ditches inches wide and 6 inches deep. matching the surrounding road. Weeds and Brush Weeds and brush exceed 18 inches in height or Weeds and brush cut to 2 inches in hinder maintenance access. height or cleared in such a way as to allow maintenance access. I 1/24/2005 2005 Surface Water Design Manual -Appendix A A-I 0 • C.2.6 PERMEABLE PAVEMENT Design Specifications 1. A minimum of 6 inches of free draining base material (sand or gravel) is required under the modular grid material. 2. The modular grid material must be installed according to the manufacturer's instructions. 3. The surface area of the modular grid openings must be at least 50% of the total surface area of the modular grid pavement. 4. The modular grid openings must be filled with gravel, sand, or a mixture of both. 5. Smooth surface walkways may be run across modular grid pavements, provided the impervious surfaced walkways do not exceed 10 percent of the total pavement surface. C.2.6.6 GRASSED MODULAR GRID PA VE:\1ENT Grassed modular grid pavement is basically a modular grid pavement with grass planted in the openings or in a thin layer of soil over the grid material. The benefits of this measure are reduced runoff peaks and volumes resulting from the increased infiltration of stormwater, the increased water storage provided in the grid soil and base, and the increased evapotranspiration provided by the grass. The grassed surface also helps remove pollutants that are left behind by vehicles. Uses: Low-traffic or infrequently used areas such as low-traffic driveways, overflow parking, event parking, church parking, employee parking, maintenance access roads, etc.; they are not allowed in King County road right-of-way. Design Specifications I. A minimum of 6 inches of free draining base material (sand or gravel) is required under the modular grid material. 2. The modular grid material must be in.stalled according to the manufacturer's instructions. 3. The surface area of the modular grid openings must be at least 50% of the total surface area of the modular grid pavement. 4. The modular grid openings must be filled with a sandy soil mix suitable for growing grass as specified by the manufacturer's instructions or a landscape architect. 5. Smooth surface walkways may be run across modular grid pavements, provided the impervious surfaced walkways do not exceed 10 percent of the total pavement area. C.2.6.7 MAINTENANCE INSTRUCTIONS FOR PERMEABLE PAVEMENT If the permeable pavement flow control BMP is proposed for a project, the following maintenance and operation instructions, plus any provided by the manufacturer or installer, must be recorded as an attachment to the required declaration of covenant and grant of easement per Requirement 3 of Section C.1.3.3 (p. C-18). The intent of these instructions is to explain to future property owners, the purpose of the BMP and how it must be maintained and operated. These instructions are intended to be a minimum; DDES may require additional instructions based on site-specific conditions or manufacturer's recommendations. Also, as the County gains more experience with the maintenance and operation of these BMPs, future updates to these instruct10ns will be posted on King County's Surface Water Design Manual website. CJ TEXT OF INSTRUCTIONS FOR NON-VEGETATED PERMEABLE PAVEMENT Your property contains a stormwater management ftow control BMP (best management practice) called "permeable pavement," which was installed to minimize the stormwater quantity and quality impacts of some or all of the paved surfaces on your property. Permeable pavements reduce the amount of rainfall 2005 Surface Water Design Manual -Appendix C 1124/2005 C-63 SECTION C.2 FLOW CONTROL BMPs that becomes runoff by allowing water to seep through the pavement into a free-draining gravel or sand bed, where it can be infiltrated into the ground. The type(s) of permeable pavement used on your property is: D porous concrete, D porous asphaltic concrete, D permeable pavers, D modular grid pavement. The area covered by permeable pavement as depicted by the flow control BMP site plan and design details must be maintained as permeable pavement and may not be changed without written approval either from the King County Water and Land Resources Division or through a future development permit from King County. Permeable pavements must be inspected after one major storm each year to make sure it is working properly. Prolonged ponding or standing water on the pavement surface is a sign that the system is defective and may need to be replaced. If this occurs, contact the pavement installer or the King County Water and Land Resources Division for further instructions. A typical permeable pavement system has a life expectancy of approximately 25-years. To help extend the useful life of the system, the surface of the permeable pavement should be kept clean and free of leaves, debris, and sediment through regular sweeping or vacuum sweeping. The owner 1s responsible for the repair of all ruts, deformation, and/or broken paving units. Cl TEXT OF INSTRUCTIONS FOR VEGETATED PERMEABLE PAVEMENT 1/24/2005 Your property contains a stormwater management flow control BMP (best management practice) called "grassed modular grid pavement." which was installed to minimize the stormwater quantity and quality impacts of some or all of the paved surfaces on your property. Grassed modular grid pavement has the runoff characteristics of a lawn while providing the weight-bearing capacity of concrete pavement. The grassed surface not only minimizes runoff quantity, it helps to filter pollutants generating by vehicular use of the surface. The composition and area of grassed modular grid pavement as depicted by the flow control BMP site plan '-) and design details must be maintained and may not be changed without written approval either from the King County Water and Land Resources Division or through a future development permit from King County. Grassed modular grid pavement must be inspected after one major storm each year to make sure it is working properly. Prolonged ponding or standing water on the pavement surface is a sign that the system defective and may need to be replaced. If this occurs, contact the pavement installer or the King County Water and Land Resources Division for further instructions. The grassed surface of the pavement must be regularly mowed and maintained in a good condition. Bare spots must be replanted in the spring or fall. 2005 Surface Water Design Manual -Appendix C C-64 APPENDIX A BENSON HEIGHTS PLAT 2-TIR 12/17/2007 PAGE 1 5 OF 1 9 Cruz/Loranger Site \\ ./, -----~ ~ -~ ·~,--~ ' ' LD Engineering LLc i -· SE'1~?i -i Site Vicinity Map Cruz/Loranger Site 0 0.7 1.4 2.1 2,8 3.5 kfll • M mi USGS Site Location Map LD Engineering LLc '"J\ (" ~REA DATA IN SQUARE FEET (SF) FOR KCRTS MODEL INP STORMWATER AREA SUMMARY: f VELOPEO TO, nl ON & OFF-SITE AREAS ASSUMED TO BE 100 % c ,FORf-?T~D Cot,JP~'Qp~:[1~B3~-:~'f"{Vi~O~~} , ~;rpe)oeveLOPEo-~·--- ··c'"'°Ns1r" l'IP; , . , i EXffvlp' ,,. ,, .1 :;;,1 TO REMAIN*= 2713 PR ROOF= 4391 PR PATIOS= 212 lMPTOTAL= 7316(0.1680AC) OFFSITE PR IMP: SIDEWALK= 1172 CURB/GUTER= 464 IMP TOTAL= 1636 (0.0376 AC) TOT AL IMP: 8962 (0.2055 AC) ONSITE PERVIOVb: GRASS d; ·~::·;1.'.>i/J4Q4r{9.J700 Af:;) DW (PGISt° ~:.;ji'.': 5J0:{0,0/17) PERVI04S rOt;,.ts'{914 (0.1617 / I) ·,:·.\ . >. ''.:· O_fFSIT1%fERVIC.W~,:.~A:;~?;>t,:;.,.., /TOTAL qNS!TE ~~t:~:I~2){)),f{~ "----- TOTAL ON & OFF:SITE AREAS :='1,6866,SF(0.387 AC} "THE TOTAL EXISTING IMPERVIOUS AR THE DUPLEX AND ASSOCIATED DRIVES IS 4380 SF. THE "EX tMP TO REMAIN" {2713 SF) REFERS TO THE . ·-l=XISi1NtrnuPLEX ROOF & PATIO AREAS (1865 SF) AND A PORTION OF THE EXISTING CONCRETE DRIVEWAY AREA (848 SF) THAT WILL REMAIN. THE HATCHED AREA (1667 SF) IS EXISTING ONSITE ASPHALT THAT Will BE REPLACED WITH GRASS. 0 0NS1TE D.W. SURFACES WILL BE GRASS-CRETE. PER THE KCSWDM, CONSERVATION FLOW CONTROL AREA SEC., EXCEPTION #2, P.1-36, ROAD & D.W. SURFACES MAY BE MODELED AS GRASS (TABLE 1.2.3.C, P.1-41) JN ORDER TO MEET THE NO MORE THAN 0.1 CFS DIFFERENCE CRITERIA. **'ASIDE FROM THE ACCOUNTED FOR OFFSITE IMPERVIOUS AREAS, THE OFFSITE PERVIOUS WILL INCREASE DUE TO REMOVAL OF EXISTING ASPHALT rfTCHlNG · .. ;CROSSHATCHING INDICATES 1667 SF OF ON-SITE Ile 175 SF OF OFF-SITE AREA 'Wf EXISTING ASPHALT TO BE REMOVEO :';)INQ .. NE\11 GRASS INSTALLED. /; 1~ Hb c t::f'/'j'."\f,., ff-cs, .)l :, ,:,,1;.• ---· V m ••.!.'Oi. / ,;- 0 PROPOSED SITE IMPERV10US -50.0% (MAX. ALLOWABLE -85%) TOTAL PROJECT (ON Ile OFF-SITE) AREA -16886 SF (0.387 AC) PROPOSED NEW IMPERV10US -9244 SF EXISITING IMPERV10US TO REMAIN -2836 SF PROPOSED PERV10US (GRASS Ile GRASS-CRETE) -7622 SF PROPOSED PGIS -510 SF NOTE: A COVENANT \>1LL BE PLACED ON THE PLAT RESIBICTING THE IMPERV10US TO THE HOUSE AND DRIVEWAY AREAS SHOv.N b. AFTER ROAD ROW DEDICATION PARCEL A: 15,230 SF (0.3496 AC) BASE DENSITY (R-18) -7 UNITS MINIMUM DENSITY -4 UNITS REQUIRED ON-SITE REC. SPACE -1190 SF S(l' I [i'.S[HC.lfl "Lc:0=\• l' !·J: 'J. •:n,a"' ;i) u-r.'._\TY £,\Sftsi['i! H:·;O <OH<,4 ~r; '.,!l'C:-::,2:a:r T'" .... 12+00 _,,,,, ... I--- CURB/GU~R-464 ~,rl,{;)~.~AL~~,: ,);,~ , ~,F t_.j:2,_ _____ .. 'fl..".{t\'/i:f> Y'J<?;<'.11-11'-, .. m "' ::, (.) .. :! ,·f'/:: -I ---- .5 "! ' Ni ' • .. >.,_ , .... tr -42..l;::s' ' ,ll.'0?' FF -423.0 bi FT': 42J.4 "" V) ' V) ::g ,· <O oi. N f-- 0 _J ... "' r-- n f-- 0 _J ~ <O BSBL oi oi .~ inch AREA'MAP: BENSON HEIGHTS PL..A i 12+96 30 I 30 ft G') ~ C -z G') go en -I 0 :;o 3: ~ -I m :;o ""C r )> z .. CIJ m z en 0 z :::c m -G') :::c -I en ""C r )> -I 5· n er ... 0 -- o"' /• 0 -I -I :--a,,:;- I - -t -~ :. --1£ ~~~ I .,,. ~ ..... 6 I'lX· z . r-._ ·-+--------:-l.>:~i%-----'---":t~ "' <;.,· . LQl.A~_:;\1 ~f· r .l,487 s/ '.,:'.!) . r, J ~---aG~ J t.~ -I., ,: : 1 LOT 8 L--·--~- 2,504 SF ·"-""'' -,:---·"'=--I !fC},'.:: ·: ' •••. :, ... ·1.i ..• ,!, .. ;J• .,,. ! .·:"'":J:;ot~NECT ,1.•s TO EX s·s. TYP ,. LO'[ 1, 2,685 SF 6 • '. SE~\l<Cft~ oEf~;~'.]j'(J ·u: \.·\IF -Rea; f,lt.CING,.-·Fll.L -. ~ L_ -----' SECT1ot,1•'otTo1JL.:SH1 'l "";!:_,,======== cs (WALL SPECIFJC ' ' !_ G SHALL BE PER "~0 i:;1 LOT 2 , DESIGN) i •• · , t~!i 1 ·· ~' _ 2734SF 'BR;;'°.f:1-8~ 'C, ADJJST b: LID e '>.•·"; ::+:;;';~-\'; 10 GRADE 4J2.0~ <> . -:--~ -4<:., L\: lE•418.67 8 {E. ) .~~~cJ!,,i(i. ,c ~ -- • <Nrii ROQS!JlY , • " •, LOT 3 , TR=42};5--'" .;; 1 ' )-",'7 ~- -BR,;,r420:Q,~-> 2,62.B SF . 0 ~ • Q2 s·~1 oo. s% a. ",: • '·, '1 \,_ . __:_ :c:__'.'.c~~qs4#,,t' '~ 't'~ -~ -'··:---,"-! - L ... 7'. -· :·"·l: 'j· i Q' "/;I] ·,i a,, (Ni'~ -r,· •. .' ' o' '<\:KY · ,: ~ ..../ !o ,, , //:_i/' . ftl:~\-'-(/ii I'. "' ~fJ; ff~ !'\) fi ,., ·';;, ·,-;,l 1.131.F u· PEOO.so,: lld ~-a ' ._;-;;. .; -::'.:, I I 0 0 t'1 I- ~ 0.. fl) 1-:::c S2 w :::c z 0 fl) z w Ill r-i LL 0 N a. cu ::!!: .!!! Ill :?-cu r:: < E cu i Ill r:: ~ 0 ; OFF-SITE ANALYSIS DRAINAGE SYSTEM TABLE SURFACE WATER DESIGN MANUAL, CORE REQUIREMENT #2 Basin: Black River Subbasin Name: Duwamish -Green River Symbo Drainage Component Drainage . Slope ' Distance Existing · , F!otential I · Type, Name, and Size Component • . · . ·., from site Problems · ,. Problems . . ' .. ·. ::. ' Descriotion .. ' discharae ,, . . . see map Type: sheetflOW, sWale, stream, drainag:e bas_in, -%' 1---% ml ~-1;_32~:: ,___ constrictions,-Under capacity, .· channel, pipe, pond;~ize: diameter, veg~tation,_cover, ,. ft;: . i' ', ponding, overtopping, flooding, ·· SU~.ce _a_rea . . _ pepth, type of .habitat oromanism.destruction, ··-:)_ senSitiVe area, scouri,ig/hJJJl,k:sli:,ughing, ·- .. 1----· :·:--:: volume -, . ·' . $edimentation,JRCiSion, other erosion 1-2 Existing Site Flow Path -asphalt 1.5 -None None Duplex roof drain discharge to asphalt driveway, 51 ' sheet flow 2-C Existing Site Flow Path -1 'pipe cover 1.94 -None None northwest site corner cb to cb in north side of SE l 70'h St., 38' of 12" PE pipe 3-A Proposed Site Flow Path -2' cover 1% None None Catch Basin roof to 123' of 4" min. (CB) is perforatged PVC drain proposed A-B Site discharge to proposed 2.84' pipe 0.50 O' -28' None None 12" PE pipe (CB-1) in cover south side of SE 170th St. B-C 12" PE pipe in conveyance 4.85' pipe 1.00 28' -None None <s-,(' 98-4\in804 Subbasin Number: 9 c:>~ervations offiel~Cinsp.ector, , "f~.~.ource reviewerforres.ident.:· ,,is\;-:;?>: _ _ ___ ,. >triilt.Jtary a~a. li~elihood of problem, .overflow · .. ·· pathways, potential i9'.Pa~•. , },;., .•. ,! ••• . ' . ' ·. . ;, .. . No problems observed ' -~ Catch Basin (CB) appears to be in good condition and well maintained. System is proposed Catch Basin (CB) is proposed Catch Basin (CB) appears to be in system in north side of SE cover 177.8' good condition and well 170th St maintained. C-D 12" PE pipe in north side of 7.60' pipe 0.44 177.8'-None None Catch Basin (CB) appears to be in SE 1701h St to conveyance cover 246.6' good condition and well system in east side of 1081h maintained. Ave SE D-E 18" PE pipe conveyance 10.80' pipe 0.53 246.6' -None None Storm Drainage Manhole (SDMH) system in east side of 1081h cover 372.4' appears to be in good condition and Ave SE well maintained. E-F 172' -18" PE pipe convey 5.1 O' pipe 0.50 372.4' -None None CB' s appear to be in good condition sys in east side I 08 1h Ave SE cover 544' and well maintained. . F-G 23' -18" PE pipe 4.95' pipe 6.5 544'-None None CB's appear to be in good condition conveyance sys in east cover 567' and well maintained. sidel081h Ave SE G-H 86' -18" PE pipe 2.90' pipe 1.0 567'-None None CB' s appear to be in good condition conveyance sys in east cover 653' and well maintained. sidel081h Ave SE H-I 214' -18" PE pipe 2.96' pipe 1.1 653'-None None CB's appear to be in good condition conveyance sys in east cover 867' and well maintained. sidel081h Ave SE 1-J 80' -18" CP conveyance 2.61' pipe 9.34 867'-None None CB' s appear to be in good condition sys in east side! 08th Ave SE cover 947' and well maintained. J-K 80' -18" CP conveyance 8.50' pipe 1.94 947'-None None CB 's appear to be in good condition sys crossing to west side of cover 1027' and well maintained. 98-41inB04 <s'-c;./ 108'" Ave SE & discharging to open channel K-H 714' -5' deep X 6' wide Channel banks -4.5 1027' -None None Channel follows the east side of channel heavily 1741' 108 th Ave SE, then heads west and overgrown down the hillside. Channel is well- with briars defined & doesn't appear to top it's banks /Sv< 98-41jnBQ4 ~ J: S2 w J: z 0 rJ) z UJ al cu e <C ~ 0 -~ 8. E - g 'I ...J 1?n= ~ t--- 2005 Surface Water Design Manual KING COUNTY. WASHINGTON, SURFACE WATER DESIGN MANUAL KJNG COUNTY, WASHINGTON SURFACE WATER DESIGN MANUAL REFERENCE 8-A TECHNICAL INFORMATION REPORT (TIR) WORKSHEET I /24/05 - KIJ\iG COUNTY, WASHJJ\iGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 1 PROJECT OWNER AND PROJECT ENGINEER Project Owner Afl.-tEk {,R~ /])ifu.NelcS<-O I Phone 2-0 Co 1:"r'l 1o /G, Address I 05 ol $£ 1Jon1 ST 12:EtJI o,,J W f,. '.18 0 <: S:: I . Project Engineer L£r11:#JJ;;, J)~s,o Company LO '"f µr,,,., fj.ftV/Jt. /.J..L 7 Phone 20C. /.//2. r.' r r.. Part 3 TYPE OF PERMIT APPLICATION ~landus~ Subdivison ;'.1'.:1:ub · I UPD 0 Building Services MIF I Commerical I SFR 0 Clearing and Grading 0 Right-of-Way Use 0 Other Part 5 PLAN AND REPORT INFORMATION Technical Information Report Type of Drainage Review Full I 8 (circle): Large Date (include revision rz-tr rt o=f.- dates): Date of Final: Part 6 ADJUSTMENT APPROVALS Part 2 PROJECT LOCATION AND DESCRIPTION Project Name 'EFt,i.fqJJ /frt 1r,11rs; l'v.T ODES Permit# ltf51-PF q'> lhtf ( ~ I location Township __ zg~--- Range 5E Section -~l~'l:.__.....,.... __ Site Address 1qe2 a1 S:E /JO'Tfl Sr h;..Ta,,,,, WA. q 8oSS'" Part4 OTHER REVIEWS AND PERMITS 0 DFW HPA 0 Shoreline 0 COE 404 Management 0 DOE Dam Safety 0 Structural 0 RockeryNaultl __ FEMA Floodplain 0 ESA Section 7 0 COE Wetlands 0 Other Site Improvement Plan (Engr, Plans) Type (circle one): ~IN ,;;dified I mall Site Date (include revision t?..t ,s-t o-f dates): , Date of Final: Type (circle one): Standard I Complex I(!'~:_~~ I Experimental I Blanket Description: (include conditions in TIR Section 2) , t)owt,1 rr~~ A,,,,.._-t tiS I Lt::•r.:L. :Z:. '\ S•Tlc TNnov~"''"'' P,I.Jlv,jt Date of Annroval: 2005 Surface Water Design Manual 1/1/05 I KING COUNTY, WASHINGTON, SLRFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 7 MONITORING REQUIREMENTS Monitoring Required: Yes@ Describe: Start Date: Completion Date: Part 8 SITE COMMUNITY AND DRAINAGE BASIN Community Plan : &c,vs,z., Hu .. t. Special District Overlays: {. at,ISil'-1/ITr aµ 1'-t.olJJ (Atf[M>L... N!£"' Drainage Basin: 'Bl-A-C:,i' -n.w&&-{OuwAH.u1f -(»t:£tJ Sv8f31trir' Stormwater Requirements: Tkv~Tfi:p /J.11 VIJ ..J Part 9 ONSITE AND ADJACENT SENSITIVE AREAS D River/Stream ---------- 0 Lake D Wetlands __________ _ D Closed Depression _______ _ D Floodplain----------- 0 Other ___________ _ Part 10 SOILS . D Steep Slope ________ _ D Erosion Hazard -------- 0 Landslide Hazard------- 0 Coal Mine Hazard------- 0 Seismic Hazard -------- 0 Habitat Protection ______ _ D __________ _ . Soil Type Slopes Erosion Potential ~'?:JG C:i-1 (' S1-1 c,H1' 0 High Groundwater Table (within 5 feet) D Sole Source Aquifer D Other D Seeps/Springs D Additional Sheets Attached 2005 Surface Water Design Manual 1/1/05 2 \~\. KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 11 DRAINAGE DESIGN LIMITATIONS REFERENCE LIMITATION/ SITE CONSTRAINT D Core 2 -Offsite Anal)(sis D Sensitive/Critical Areas D SEPA D Other D D Additional Sheets Attached Part 12 TIR SUMMARY SHEET lnrovide one TIR Summan, Sheet oer Threshold Discharae Area\ Threshold Discharge Area: Pi..llT ( o . 1 'l"il\. C.) (name or descriotion) Core Requirements (all 8 apply) ., Discharae at Natural Location Number of-Natural Discharae Locations: Offsite Analysis Level: (_y 2 I 3 dated: 11.hr:: / ,,-, l- I ' Flow Control Level: 1 / 2 / 3 or Exemption Num7; "I "L.. (incl. facility summary sheet) Small Site BMPs P-c"-~O· .. T~ -Pt PE. &tlld1 -r ££:TE Conveyance System Spill containment located at: I Erosion and Sediment Control ESC Site Supervisor: Contact Phone: After Hours Phon<>~---s----._ Maintenance and Operation Responsibility: ~t13,I Public Yes 1<N'~ If Private, Maintenance LoFI--.Reauired: Financial Guarantees and Provided: Yes~ Liabilitv -Water Quality Type: l Basic_.,\' Senr Lake / Enhanced Basicm / Bog (include facility summary sheet) or Exemption No. ::l . Landscaoe Manaaement Plan: Yes /No) Soecial Reauirements las annlicable) --- Area Specific Drainage Type: CDA / SDO / MOP / BP / LMP / Shared Fae. I~ Requirements Name: - Floodplain/Floodway Delineation Type: Major / Minor / Exemption / ~n~ ) 100-year Base Flood Elevation (or range): Datum: Flood Protection Facilities Describe: Source Control Describe landuse: (comm./industrial landuse) Describe any structural controls: 2005 Surface Water Design Manual 1/1/05 3 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT {TIR) WORKSHEET -·--- Oil Control High-use Site: Yes~ Treatment BMP: Maintenance Agreement: Yes ® with whom? Other Drainage Structures Describe: C.6i.V(Yfo,~ ":; 'f ST!i I'\ (Prr</J(J ~ /1,1L-ftT STIWC. fV('.tl:5) Part 13 EROSION AND SEDIMENT CONTROL REQUIREMENTS MINIMUM ESC REQUIREMENTS MINIMUM ESC REQUIREMENTS DURING CONSTRUCTION AFTER CONSTRUCTION QI) Clearing Limits !ii:J Stabilize Exposed Surfaces ' r Cover Measures ~ Remove and Restore Temporary ESC Facilities Perimeter Protection ~ Clean and Remove All Silt and Debris Ensure ~ Traffic Area Stabilization Operation of Permanent Facilities Sediment Retention D Flag Limits of SAO and open space D Surface Water Control preservation areas D Other D Dust Control __§! Construction Seauence ,, Part 14 STORMWATER FACILITY DESCRIPTIONS (Note: Include Facilitv Summarv and Sketch\ Flow Control Tvne/Descriotion Water Qualitv Tvoe/Descriotion D Detention D Biofiltration D Infiltration D Wetpool D Regional Facility D Media Filtration D Shared Facility D Oil Control © Small Site BMPs PE«.f r,,.,/ ooH,-D Spill Control D Other l (J'..r,.T(,. D Small Site BMPs 11i:l Other ' &M,(s-6'.tr£. 2005 Surface Water Design Manual 1/1/05 4 KING COUNTY. WASHINGTON. SLRFACE WATER DESIGN MANUAL TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 15 EASEMENTSfTRACTS Part 16 STRUCTURAL ANALYSIS Ea Drainage Easement 0 Cast in Place Vault 0 Access Easement 0 Retaining Wall 0 Native Growth Protection Covenant 0 Rockery> 4' High 0 Tract 0 Structural on Steep Slope 0 Other 0 Other Part 17 SIGNATURE OF PROFESSIONAL ENGINEER I, or a civil engineer under my supervision, have visited the site. Actual site conditions as observed were incorpora~~ed into thi worksheet and the attached Technical Information Report. To the best of my knowledge the inf mation provided here is accurate. __.,__..._/ -h:/r r / o =,. / Sioned!Oate 2005 Surface Water Design Manual 5 1/1/05 APPENDIXB 8EN9DN HEIGHTS PLAT 2-TIR l 2/17/2007 PAGE 1 6 OF" 19 KCRTS Command CREATE d new Ti.me Series Production of Ru:1off Time Series Project Location : Sea-Tac Computing Series PRE.tsf Regional Scale Factor : 1. 00 Data Type : Reduced Creating Hourly Time Series File Loading Time Seri~s F~le:C:\KC_SWDM\KC_DATA\STTF60R.rnf Till Forest 0.39 acres Total Area 0.39 acres 9:00 Peak Discharge: 0.031 CFS at en Jan 9 in Year 8 Storing Time Series File:PRE.tsf Time Series Computed KCRTS Command Enter the Analysis TOOLS Module Analysis Tools Conunand Compute PEAKS and tlow Frequencies Loading Stage/Discharge curve:pre.tsf Flow Frequency Analysis -------------------------------------------------------- Time Series File:pre.tsf Project Location:Sea-Tac Frcque~cies & Peaks saved to File:PRE.pks Analysis Tools Command RETURN Lo Previous Menu KCR7S Command CREATE a :-1ew Time Series Production of Runoff Time Series Project Location : Sea-Tac Computing Series DEV.tsf Regional Scale Factor : 1.00 Data Type : Reduced Creating Hourly Time Series File Till Grass Impervious Loading Time Ser~es File:C:\KC SWDM\KC DATA\STTG60R.rnf 0.18 acres Loading Time Series File:C:\KC SWDM\KC DATA\STEI60R.rnf 0.21 acres Total Area 0.39 acres Peak Discharge: 0.136 CFS at 6:0J on Jan 9 in Year 8 Storing Time Series File:OEV.tsf Time Series Computed KCRTS Command Enter the Analysis TOOLS Module Analysis Tools Command Compute PEAKS a~d Flow Frequencies Flow Frequency Analysis Time Series File:dev.tsf Project Location:Sea-Tac Loading Stage/Discharge curve:dev.tsf Frequencies & Peaks saved to File:DEV.pks Analysis Tools Command RETU::ZN to ? :::.-ev ious Menu :<:CR'!'S Corrunand exit KCRTS Program Flow Frequency Analysis Time Series File:pre.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--- Flow Rate Rank Time of Peak (CFS) 0.025 2 2/09/01 18:00 0.007 7 1/06/02 3:00 0.018 4 3/06/03 18:00 0.001 8 3/24/04 20:00 0.011 6 1/05/05 9:00 0.019 3 1/18/06 21:00 0.016 5 11/24/06 4:00 0.031 1 1/09/08 9:00 Computed Peaks Flow Frequency Analysis Time Series File: dev. tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--- Flow Rate Rank Time of Peak (CFS) 0.066 5 2/09/01 2:00 0.052 8 1/05/02 16:00 0.080 2 2/27 /03 7:00 0.054 7 8/26/04 2:00 0.066 6 10/28/04 16: 00 0.070 4 l/18/06 16:00 0.079 3 10/26/06 0:00 0 .135 1 1/09/08 6:00 Computed Peaks -----Flow Frequency Analysis------- --Peaks Rank Return Prob (CFS) Period 0.031 1 100.00 0.990 0.025 2 25.00 0. 960 0.019 3 10.00 0.900 0.018 4 5.00 0.800 0.016 5 3.00 0. 667 C .011 6 2.00 0.500 0.007 7 1. 30 0. 231 0.001 8 1.10 0.091 0.029 50.00 0.980 -----Flow Frequency Analysis------- -Peaks Rank Return Prob (CFS) Period 0.135 1 100.00 0.990 0.080 2 25.00 0. 960 0.079 3 10.00 0.900 0.070 4 5.00 0.800 0.066 5 3.00 0.667 0.066 6 2.00 0.500 0.054 7 1. 30 0. 231 0.052 8 1.10 0.091 0.117 50.00 0. 980 The difference between the Developed and Pre-developed 100-year Peak Flow for the total project area is 0.10 cfs, equal to the 0.1 cfs requirement for flow control exemption. Thus, formal flow control not required. APPENDIXC BENSON HEIGHTS PLAT 2-TIR l 2/17/2007 PAGE l 7 OF 19 ~' s E . 1 68.· TH STRJ::ET CL ' ...... :E/\n:;~ (;::. sc-:c 211 p~··~ """'] AH, ,,c...1,311 ;:49QQ:J1Q . ·n o:; "' 'L' '"I aj'' :.(' ~'! '-';: zw e=z !aa Xz w< @~~ ~Q F(I)~ "I ~I W < O 0.3~CFS PEAK 25-YEAR FLOW TO Cii1iFOR THE UPSTRl!j™' AREA AS DETERMINED IN TH~t;llR, SECTION ~!cl 0ww o 0 ~~ /1 ~oo::1 , <c) ~di~~ ~8 /""-~Silt:. 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ADJUSTED "• -'1 7~·7' ·r7·77 · " -7 -,c.7· ~ ,,, I J' tr~ 111,1 1 "" ,~ -// ,, /, / w //x/ '!...0.::: 'v , d ! :k\ '', o¥p / i;:.; tPROPERTY Ll~E~'1 r-,.. ~, \lo! ,-., --· , 1t,,1IJ1 1>t; _,. , : ~ , De ,. <) ,·~' •;,:: ~ ;"---l-ijL 1 /! ~~ -~-:..:,..21J.\);cµ~-' l ~ I -'f ::, ?.?, 6; \ /!\ ' "·"'·1~,-,cu:eL,.1,1_.-, ·1 "'· /~ l'_ 1 c_ (TO N) 1u· _ ·1•,G 'VJ n-z:--•:,:-21 i (J '\.~, '~ t: '" . -, j 5, POSED STOCB "'\ .J ~ .~I j/~l I IJ,~ ·Jr,l~°' ! ,'-""..,,,,i:-" ~ 1J8(,J:::; ;J,J'H ::-:, LJ,, ,·,r, . ~1 1 · !·t'l""J'l ' r I V "'4 J Pf ]I 11 I ~ ",;a-,·, k, d_,,','L_ , cL./.L!L;Lf<'-4L/.<f·c'/1L·.J1, ,, I _,"~I-_:-'-~-~~ ' '!;' lit J' I I_' -~ I '. ·, ' ·-' l N as·,,t;:,.~1-,.. -,_,,_ --~---~ , .,! 1~' \\ -<' -l 34.Jts__ t ~ Pr ~ , ,-~7.59 ,4<'.7-... --fl./1,1 .. 1 -, ,> I' IT· 1 ..... ,,,j. 1;,-..... v'\. >::-_---;, :-;;:;:::=_:-'"":._~';?.""-=-~ r~ --:..----~--s1 ". ... ~-....... -. / '<t' i] !, ' \ft -.\-"-~ • .,,, }. "'.Y ~ j Ai/~{ ,>' -~ ' ~ / \ ~,. -" ~ ~42'Row:~,at 1 1 ,-?-'---~l-x-"7",,_-".v,..:~~.:,.~,1""~=,)t~--1i 2 l:--,, -;#~--:--~~ -'\ "' ~ ,,,, ,.., \i,g~i-1ry~'-t:"»'[:::,.: "' ;' Jh I ' ''\~,-~.I','·,;\! fc/ll~li:T AREA''NJAP: 8EN$QN-l4E1GITT$PL.At /~ ~ • / 1' 0 JO 1 inch ; 30 ft. ' 12+96 sa9·49'2Sw 464.m EA~ 'X Flow to Proposed CB #1 I<C:ZTS COITL"".1.and CREATE a ~ew Time Series Production of Runoff Time Series Project Location : Sea-Tac Computing Series DEV.ts£ 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 0.21 acres Total Area 0.21 acres Peak Discharge: 0.099 CFS at 6:00 on Jan 9 in Year 8 Storing Time Series File:DEV.tsf Time Series Computed KCRTS Command Enter the Ana~ysis TOOLS Module Analysis '.!:'ools Command Compute PEAKS and ?low Frequencies Loading Stage/Discharge curve:dev.tsf Flow Frequency Analysis Time Series File:dev.tsf Project Location:Sea-Tac Frequencies & Peaks saved to File:DEV.pks Analysis Tools Command RETURN to Previous Menu KCRTS Cornnand eXit KCRTS Program Flow Frequency Analysis Time Series File:dev.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--- Flow Rate Rank Time of Peak (CFS) 0.051 7 2/09/01 2:00 0.044 8 1/05/02 16:00 0.062 3 12/08/02 18:00 0.052 6 8/26/04 2:00 0. 062 4 10/28/04 16:00 0.054 5 1/18/06 16:00 0.076 2 10/26/06 0:00 0.099 1 1/09/08 6:00 Computed Peaks -----Flow Frequency Analysis------- --Peaks Rank Return Prob (CFS) Period 0.099 1 100.00 0. 076 2 25. 00 0.062 3 10.00 0.062 4 5.00 0.054 5 3.00 0.052 6 2.00 0.051 7 1.30 0.044 8 1.10 0.091 50.00 0.990 0.960 0.900 0.800 0.667 0.500 0.231 0. 091 0. 980 The total peak flow for the 25-year storm to CB#l is 0.38 cfs: • 0.076 including the new ons~te i~pervious areas, frontage improvements and existing SE 170th Street road s~rfaces • added to 0.304 cfs for the upstream area (assuming it will be diverted to the street as discussed in the T:R, Section 2) ,1-v Project Description Project File Worksheet Flow Element Method Solve For Input Data untitled.fm2 Pipe Capacity Check Worksheet for Circular Channel 25-yr Check -Pipe from CB#1 to Ex CB Circular Channel Manning's Formula Full Flow Capacity Mannings Coefficient Channel Slope Diameter 0.009 0.005000 ft/ft 12.00 in Results Depth 1.00 ft Discharge 3.64 els Flow Area 0.79 ft' Wetted Perimeter 3.14 ft Top Width 0.00 ft Critical Depth 0.81 ft Percent Fu 11 100.00 Critical Slope 0.005067 ft/ft Velocity 4.63 ft/s Velocity Head 0.33 ft Specific Energy FULL ft Froude Number FULL Maximum Discharge 3.91 cfs Full Flow Capacity 3.64 cfs Full Flow Slope 0.005000 ft/ft f£a'P CNA<-J.TY ,s o,38 C."fS( Prwv 1.,_;J) CkK c,'t o1' l. <? ( Cf ~ { OIC.. Academic Edition 12/16/07 04:14:28 PM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 (203) 755~1666 FlowMaster v5.17 Page 1 of 1 ,1-1v APPENDIXD BENSON HEIGHTS PLAT 2-Tl R 1 2/1 7.'2007 PAGE 1 B OF 1 9 KCRTS Command CREATE a new Tine Series Production of Runoff ~)me Series Project Location : Sea-Tac Computing Series ex.tsf Regional Scale Factor : 1. 00 Data Type : Reduced Creating Hourly Time Series File Till Grass Loading Time Series File:C:\KC SWDM\KC_DATA\STTG60R.rnf 1. 1 7 acres Impervious Loading Time Series File:C:\KC SWDM\KC_DATA\STEI60R.rnf 0.59 acres Total Area 1.76 acres Peak Discharge: 0.527 CFS at 6:00 on Jan 9 in Year 8 Storing time Series File:ex.tsf Time series Co~puted KCRTS Command Enter the Analysis TOOLS Mod·Jle Analysis Tools Command Compute PEAKS and Flow Frequencies Loading Stage/Discharge curve:ex.tsf Flow Frequency Analysis Time Series File:ex.tsf Project Location:Sea-Tac Frequencies & Peaks saved to File:ex.pks Flow Frequency Analysis Time Series File: ex. tsf Project Location:Sea-Tac Analysis Tools :::omr:.and RETURN to Previous V.eff..l KCRTS Commar.d eXit KCRTS Program ---Annual Peak Flow Rates--------Flow Frequency Analysis------- Flow Rate Rank Time of Peak --?eak.s Rank Return Prob (CFS) {CFS) Period 0.248 4 2/09/01 2:00 ~ 1 100.00 0. 990 0.180 7 1/05/02 16:00 0.304 2 25.00 0. 960 0.304 2 2/27/03 7:00 0.261 3 10.00 0.900 0.170 B 8/26/04 2:00 0.248 4 5 .00 0.800 0.211 6 10/28/04 16:00 0. ?4 6 5 3.00 0.667 0.261 3 1/18/06 16:00 0 .211 6 2.00 0.500 0.246 5 10/26/06 0:00 0.180 7 l. 30 0.231 0.528 1 1/09/08 6:00 0 .170 B 1.10 0.091 Computed Peaks 0.453 50.00 0. 980 Project Description Project File Worksheet Flow Element Method Solve For Input Data Upstream -Limiting Pipe Capacity Check Worksheet for Circular Channel untitled.fm2 1 Circular Channel Manning's Formula Full Flow Capacity Mannings Coefficient Channel Slope Diameter 0.012 0.005000 fl/ft 8.00 in Results Depth Discharge Flow Area Wetted Perimeter Top Width Critical Depth Percent Full Critical Slope Velocity Velocity Head Specific Energy Froude Number Maximum Discharge Full Flow Capacity Full Flow Slope 0.67 ft 0.93 cfs 0.35 fl2 2.09 ft 0.00 ft 0.46 ft 100.00 0.007573 fl/ft 2.65 fl/s 0.11 ft FULL ft FULL 1.00 cfs 0.93 cfs 0. 005000 fl/ft '.f'ro,11ps;,. (t,.r~1,'r' C t.o c.i::s) fi{Cl!:~l)S it\'E. fZ.£Q '!> C'-f"'-'.,,: (_ o. $ S Cf~) t o<'l iltE. loo, ra. Sf "1'-1'\, 0~ V Academic Edition 12/16/07 02:16:35AM Haestad Methods, Inc. 37 Brookside Road Waterbury, CT 06708 (203) 755-1666 FlowMaster vS.17 Page 1 of 1 ,<t> f(, APPENDIXE BENSON HEIGHTS PLAT 2-TJR 12/17/2007 PAGE 1 9 OF 19 LD Engineering, LLC Land Development & Geotechnical Services 105 Harvard Ave E, Suite 106, Seattle, WA 98102 Ph. (206) 412-6660 Fax (206) 709-7776 Email : lend@hotmail.com GEOTECHNICAL ENGINEERING STUDY BENSON HEIGHTS PLATS PROPOSED RESIDENTIAL DEVELOPMENT Location: 10801 SE 170TH ST & 17014 108™ Ave SE RENTON, WA 98055 Prepared for: Cruz I Loranger September 18, 2007 By: \ I EXPIRES 3/31/ 08 I . ···-···---' LD ENGINEERING, LLC 105 Harvard Ave. E, Suite #106 Seattle, Washington 98102 LO Job No. 2007-14 K.C. Parcels: 2923059026 & 2923059028 Cruz/Loranger Site Dear Sirs: This geotechnical report presents the results of our geotechnical soils evaluation of the above referenced project; see the Appendix, Site Vkinity Map for the project location. The 0.78-acre project area includes two parcels one with an existing duplex and the other a single family residence, see the Appendix, Site Plan. The duplex will remain, while the residence will be demolished. A total of up to IO new dwelling uni ts will be developed. INTRODUCTION The project site (see the Appendix, Site Vicinity Map) is located on 2 parcels at the following addresses and information: PARCEL A: 10801 SE 170th St, Renton, WA 98055 KING CO Parcel 2923059026 (R-18) PARCELS: 17014 108th AVE SE 98055 KING CO Parcel 2923059028 (R-18) The site is located in: A PORTION OF NW 1/4 OF THE SE 1/4 OF SECTION 29-23-5 KING COUNTY, WASHINGTON The site is located within the Duwamish -Green River Watershed, located just downgrade of the ridgeline that defines the drainage basin in the Benson Hill vicinity. The Appendix, USGS Site Location Map shows the site in relation to the ridgeline and other features. The 0.78-acre project area includes two parcels with an existing duplex (Parcel A) and single family residence (Parcel 8), refer to the Appendix, Site Plan. The duplex will remain, while the residence will be demolished. A total ofup to 10 new dwelling units will be developed. Four new units are proposed for Parcel A with driveway access directly off SE 170'11 Street. The six units proposed for Parcel B will have driveway access off a proposed interior drive accessing I OS'h Ave SE. The site is bounded by Benson Road (108'h Ave SE) to the west, SE l 70'h Street to the north and a single family residence to the east and south, zoned R-12 and R-18, respectively. The majority of the site is flat while an existing concrete retaining wall and hill slope, each with a maximum 4-foot relief separating the two parcels. The southeast site comer slopes at I 0% slope upgrade from west to east with a maximum 6-foot relief. SCOPE OF WORK The purpose of our services is to evaluate the site soils conditions as a basis for assessing the soil suitability for proposed site structure foundations, road surfacing and subgrade and infiltration recommendations. Specifically, our scope of services for this project includes the following: 1. Review of available soils, geologic, topographic information regarding the subject site and adjacent areas with particular emphasis on subsurface information. LD Engineering LLC 2 • Cruz/Loranger Site 2. A surface geologic reconnaissance of the site and adjacent areas to identify relevant information. 3. Excavate 6 test pits to a maximum depth of IO feet below ground surface to evaluate the subsurface soil condition. 4. Preparation of a geotechnical report providing our observations of soil conditions at the site pertinent to the proposed foundation work and providing our opinion as to the adequacy of such development. We will also provide criteria for allowable on-site drainage disposal solutions, if feasible. A summary of our findings will be included in a written report along with recommendations and the report will be suitable for submittal to King County with the permit application. If the subsurface conditions are significant, we will also provide a recommendation and cost for additional stndies, which may include subsurface explorations such as mechanical soil borings or additional backhoe test pits and an engineering analysis of foundation soil stability. 5. Additional services that may be requested by you and agreed to by LD Engineering LLC. SITE CONDITIONS The project comprises two adjacent parcels, each measuring approximately 212' X 80'; see the Appendix, Site Plan. The highest and lowest site elevations are 428.19' and 415.69' at the southeast comer and midpoint of the southern property line of Parcel B, respectively. The topography of Parcel A is nearly flat, sloping slightly to the west or south at a maximum of 3% slope. Parcel B slopes from the north, east and west to a local low point located near the midpoint of the southern property line. There is a 10% maximum slope at the site southeast corner, while the central portion of the site slopes at 4%. A duplex and paved parking area exists on Parcel A, while a single-family residence with gravel parking area and 4 sheds occupies Parcel B. The majority of each property is vegetated with grass, while the back corner of Parcel B has an area of brush. No evidence of erosion was observed at the site at the time of our site observations. SUBSURFACE EXPLORATIONS Our subsurface explorations were performed on June 16, 2007. A total of six (6) exploratory test pits were excavated by a backhoe to characterize subgrade conditions of the property. The test pits were extended to 10 feet below ground surface (bgs) with the locations shov,m on the Appendix, Site Soil Test Pit Location Map. The soil observed in the test pits is shown on the accompanying exploration logs in the Appendix. Exploration locations were determined by tape measurement from available reference points and should be considered accurate only to the degree of the method employed. Exploration elevations were established by a site topographic survey. Samples obtained from the explorations were placed in airtight containers and transported to a soil testing laboratory for further examination. Particle Size Gradation and Water Content Tests were performed on five samples with the results presented in tabular and graphical form in the Appendix. Generally, the site soil is characterized as silty sand encountered throughout the majority of all six (6) boring depths. LD Engineering LLC 3 Cruz/Loranger Site GEOLOGY AND SUBSURFACE CONDITIONS General Geology The geology of the site and surrounding area as taken from the USDA Soil Conservation Service is as follows: Map Unit Description - King County Area, Washington AgC-Alderwood gravelly sandy loam, 6 to 15 percent slopes Hydrological Group C Map Unit Setting - • Elevation: 50 to 800 feet • Mean annual precipitation: 25 to 60 inches * Mean annual air temperature: 48 to 52 degrees F * Frost-free period: 180 to 220 days Map Unit Composition - * Alderwood and similar soils: 95 percent * Minor components: 5 percent Description of Alderwood - Setting * Landform: Moraines, till plains * Parent material: Basal till with some volcanic ash Properties and qualities * Slope: 6 to 15 percent * Depth to restrictive feature: 24 to 40 inches to dense material * Drainage class: Moderately well drained * Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) * Depth to water table: About 24 to 42 inches • Frequency of flooding: None * Frequency of ponding: None * Available water capacity: Very low (about 2.5 inches) Interpretive groups * Land capability (nonirrigated): 4s Typical profile * 0 to 12 inches: Gravelly sandy loam * 12 to 27 inches: Very gravelly sandy loam * 27 to 60 inches: Very gravelly sandy loam LD Engineering LLC 4 Cruz/Loranger Site Minor Components Norma * Percent of map unit: 1 percent * Landform: Depressions Bellingham * Percent of map unit: 1 percent * Landform: Depressions Seattle * Percent of map unit: 1 percent • Landform: Depressions Tukwila * Percent of map unit: 1 percent * Landform: Depressions Shalcar * Percent of map unit: 1 percent * Landform: Depressions LD Engineering LLC 5 Cruz/Loranger Site Subsurface Conditions Parcel A is overlain by approximately 2 feet of fill consisting of moist, medium dense, brown silty sand with intermittent stones and rubble, while silty sand with organics comprises the first foot of topsoil on Parcel B. Below the fill/topsoil a medium dense layer of brown silty sand with gravel extends to approximately 3.5 feet bgs. From 3.5 feet bgs to the 10 foot maximum depth of all the borings, dense to very dense, gray silty sand with gravel was encountered. A gradation analysis performed on the silty sand soil samples indicate a silt/sand content ranging from 27% to 40%. Ground Water Groundwater was not encountered in any of the three Parcel A test pits, but was encountered in all of the Parcel B test pits at approximately 3.5-feet bgs. A limited amount of shallow groundwater appears to be perched on top of the dense layer of silty sand in the vicinity of and at the base of the slopes on Parcel B. Infiltration tests were attempted in each of the pits, but were abandoned since the dense layer of silty sand at approximately 4 feet did not allow percolation of standing water after sufficiently long periods of soaking. With respect to hydraulic conductivity the high silt/clay content results in a soil that behaves more like silt or clay and thereby a very low permeably. Therefore, we do not recommend onsite infiltration as a means of stormwater discharge. CONCLUSIONS Based on the results of our site reconnaissance, data review, and subsurface explorations, it is our opinion that the site is suitable for the proposed multi-residential development. Based on the soils encountered and our understanding of the proposed site development, conventional earthwork and foundation support is feasible at the site provided that necessary precautions are taken for the perched, shallow groundwater encounter in the vicinity of the site low point. The high silt/clay soil content will make use of the site soil as fill difficult under wet seasonal conditions. We recommend that the contractor grade the site in as dry a period as possible, especially if the site soil is to be used as fill and be experienced in working with shallow ground water conditions. Conventional foundation support may be utilized for the structure. Pertinent conclusions and geotechnical recommendations regarding the design and construction of the proposed development are presented below. LANSLIDE -EROSION HAZARD AREA Classification The King County Ordinance defines a landslide hazard as I) one containing slopes equal to or greater than 30% with more than a IO-foot vertical relief and containing soils described by the Soil Conservation Service (SCS) Soil Survey as having "severe" limitation for building site development due to slope. There are no SAO Landslide Hazards mapped on the King County Landslide Hazard Areas map (see the Appendix) in the vicinity of the site. The maximum site slope is I 0% and the soil rating is "somewhat limited" for a building site without a basement. The soils at the site are mapped as "AgC-Alderwood gravelly sandy loam" throughout the entire site, refer to the Appendix, SCS Soil Survey. The Alderwood soils are LD Engineering LLc 6 Cruz/Loranger Site described as having a slight erosion hazard. Therefore the site soil does not meet the technical criterion for either landslide or erosion hazard. Slope Stability Based on our field observations, explorations and experience with the soil type and site conditions, the site soil is generally stable relative to deep-seated slide failure in its present configuration. SEISMIC -LIQUEFACTION Seismic event following an earthquake generates vibrations within soil particles and results in complete Joss soil strength. This phenomenon is called Liquefaction and it mainly affects geologically recent deposits of fine-grained sands that are below the groundwater table. Soils of this nature derive their strength from intergranular friction. The generated water pressure or pore pressure essentially separates the soil grains and eliminates this intergranular friction, thus reducing or eliminating the soil's strength. Based on our review of the subsurface conditions, we conclude that the site soils are not susceptible to liquefaction. The near surface soils arc in a dense, cemented condition and of a glacially overridden nature. Although a limited perched water table was encounter at the low portions of Parcel B, site soils were not saturated at depths below 3.5 feet. Shaking of the already dense soil with subsequent excess pore pressure is not apt to produce a denser configuration. EARTHWORK Site Preparation All areas to be graded/excavated should be cleared of deleterious matter including any existing structures, foundations, abandoned utility lines, debris and vegetation. Graded areas should be stripped of any forest duff and organic-laden soils. Based on the explorations at the site, we estimate that stripping on the order of 4 to 12 inches will be necessary to remove the sod, root zone and surficial soils containing significant organic material. Areas with deeper, unsuitable organics should be expected in the vicinity of depressions or heavy vegetation. These materials may be stockpiled and later used for erosion control and Jandscaping/revegetation. Materials that cannot be used for landscaping or erosion control should be removed from the project site. Where placement of fill material is required, the exposed subgrade areas should be compacted to a firm and unyielding surface prior to placement of any fill. We recommend that trees be removed by overturning in fill areas so that a majority of the roots are removed. Excavations for tree stump removal should be backfilled with structural fill compacted to the densities described in the "Structural Fill" section of this report. We recommend that a member of our staff evaluate the exposed subgrade conditions after removal of vegetation and topsoil stripping is completed and prior to placement of structural fill. The LD Engineering 1.1.c 7 Cruz/Loranger Site exposed subgrade soil, especially in the area of fill on Parcel A should be probed with a 1/2-inch- diameter steel, as appropriate. Any soft, loose or otherwise unsuitable areas delineated during proof rolling or probing should be recompacted, if practical, or overexcavated and replaced with structural fill, based on the recommendations of our site representative. Any organics encountered in the fill should be removed. Structural Fill The brown silty sand and organics encounter in the top 6" to 12" below the surface should not be used for structural fill, but is suitable for use in landscaped areas. Due to the high content of silt/clay ranging from 27% to 40% in the underlying silty sand, we recommend that site grading occur during a dry seasonal period. The soil will be highly sensitive to moisture and therefore difficult to compact wet of optimum moisture content. All fill material/trench backfill should be placed as structural fill. The structural fill should be placed in horizontal lifts of appropriate thickness to allow adequate and uniform compaction of each lift. Fill should be compacted to at least 90 percent of MOD (maximum dry density as determined in accordance with ASTM D-1557) to within 2 feet of subgrade and 95 percent MDD in the upper 2 feet. The appropriate lift thickness will depend on the fill characteristics and compaction equipment used. We recommend that the appropriate lift thickness be evaluated by our field representative during construction. We recommend that our representative be present during site grading activities to observe the work and perform field density tests. The suitability of material for use as structural fill will depend on the gradation and moisture content of the soil. As the amount of fines (material passing No. 200 sieve) increases, soil becomes increasingly sensitive to small changes in moisture content and adequate compaction becomes more difficult to achieve. During wet weather, we recommend use of well-graded sand and gravel with less than 5 percent (by weight) passing the Ko. 200 sieve based on that fraction passing the 3/4-inch sieve. If prolonged dry weather prevails during the earthwork and foundation installation phase of construction, a higher (up to 10 to 12 percent) fines content will be acceptable. Material placed for structural fill should be free of debris, organic matter, trash and cobbles greater than 6 inches in diameter. The moisture content of the fill material should be adjusted as necessary for proper compaction. Cut and Fill Slopes All job site safety issues and precautions are the responsibility of the contractor providing services/work. The following cut/fill slope guidelines are provided for planning purposes. Temporary cut slopes will likely be necessary during grading operations. As a general guide, temporary slopes of 1 .5 to I (horizontal lo vertical) or flatter may be used for temporary cuts in the upper 3 to 4 feet of the glacially consolidated soils that are weathered to a loose/medium dense condition. Temporary slopes of 3/4 to 1 or flatter may be used in the unweathered dense to very dense sands and gravels. LD Engineering uc 8 Cruz/Loranger Site These guidelines assume that all surface loads are kept at a minimum distance of at least one half the depth of the cut away from the top of the slope and that significant seepage is not present on the slope face. Flatter cut slopes will be necessary where significant raveling or seepage occurs. We recommend a maximum slope of2 to I for permanent cut and fill slopes. Where 2 to I slopes are not feasible, retaining structures should be considered. Unretained fill material placed on slopes that arc steeper than 5 to I should be "keyed' into the undisturbed native soils by cutting a series of horizontal benches. The benches should be I Yi times the width of equipment used for grading and a maximum of 3 feet in height. Subsurface drainage may be required in seepage areas. Surface drainage should be directed away from all slope faces. Some minor raveling may occur with time. All slopes should be seeded as soon as practical to facilitate the development of a protective vegetative cover or otherwise protected. FOUNDATION SUPPORT We recommend that spread footings for any residence be founded on medium dense or denser native soils or on structural fill that extends to suitable native soils. The soil at the base of the excavations should be disturbed as little as possible. All loose, soft or unsuitable material should be removed or recompacted, as appropriate. A representative from our firm should observe the foundation excavations to determine if suitable bearing surfaces have been prepared, particularly in the areas where the foundation will be situated in fill material. Perimeter foundations exposed to the weather should be at a minimum depth of 18 inches below final exterior grades. Shallow groundwater at the site requires that the footings must be placed above the ground water level. We recommend that spread footings for residence be founded on structural fill that extends to suitable native soils if the shallow ground water level is below the footing elevation. We recommend a minimum v,ridth of2 feet for isolated footings and at least 16 inches for continuous wall footings. Footings founded as described above can be designed using an allowable soil bearing capacity of 2,000 psf (pounds per square foot) for combined dead and long-term live loads. The weight of the footing and any overlying backfill may be neglected. The allowable bearing value may be increased by one-third for transient loads such as those induced by seismic events or wind loads. Lateral loads may be resisted by friction on the base of footings or floor slabs and as passive pressure on the sides of footings. We recommend that an allowable coefficient of friction of0.35 be used to calculate friction between the concrete and the underlying soil. Passive pressure may be determined using an allowable equivalent fluid density of 300 pcf (pounds per cubic foot). Factors of safety have been applied to these values. We estimate that settlements of footings designed and constructed as recommended will be less than I inch, for the anticipated load conditions, with differential settlements between comparably loaded footings of Y, inch or less. Most of the settlements should occur essentially as loads are being applied. However, disturbances of the foundation sub grade during construction could result in larger settlements than predicted. LD Engineering LLC 9 Cruz/Loranger Site FLOOR SLAB SUPPORT Slabs-on-grade (garage or floor) should be supported on medium dense or denser native soils or on structural fill prepared as described in the Structural Fill section of this report. We recommend that floor slabs be directly underlain by a minimum 4-inch thickness of coarse sand and/or gravel containing less than 3 percent fines. The drainage material should be placed in one lift and compacted to an unyielding condition. A synthetic vapor barrier is recommended for the control of moisture migration through the slab, in particular where adhesives are used to anchor carpet or tile to the slab. A thin layer of sand may be placed over the vapor barrier and immediately below the slab to protect the liner during steel and/or concrete placement. A subgrade modulus of 400 kcf (kips per cubic foot) may be used for floor slab design. We estimate that settlement of the floor slabs designed and constructed as recommended, will be Y,- inch or less over a span of 50 feet. PAVEMENT AREAS Pavement area subgrades should consist of compacted structural fill. AU loose material and material containing organic material should be removed from pavement subgrades and structural fill should be placed up to pavement subgrade. The grade should be brought up by placing and compacting structural fill to 90 percent of the material's maximum dry density, except for the top I-foot which should be compacted to 95 percent (ASTM Test Designation Q-1557 -Modified Proctor). We recommend placing a 4 inch thick base of crushed rock minus (5/8" or 1 1/4 directly below the driveway pavement above the compacted structural fill. The native soils encountered at the site during our subsurface exploration program appeared to be compact below I foot and are likely to be acceptable for structural fill. Density tests can be conducted in these areas provided that an applicable proctor compaction test has been conducted. A proof-roll test may also be acceptable for confirming the firm and unyielding state of the pavement subgrade. A proof-roll test consists of a LD Engineering, LLC representative monitoring a fully loaded dump truck or large steel drum roller rolling over the subgrade to observe any deflection of the pavement subgrade. SITE DRAINAGE All ground surfaces, pavements and sidewalks should be sloped away from the residence and associated structures. Surface water runoff should be controlled by a system of curbs, berms, drainage swales, catch basins and then dispersed into vegetated areas, and/or conveyed to the site's stormwater discharge system. We recommend that conventional roof and footing drains be installed for structures. The foundation drains and roof downspouts should be tightlined separately to an approved discharge system. LD Engineering LLc 10 Cruz/Loranger Site Drainage from the driveway area should be sheet flowed to the adjacent vegetated portions of the site and/or conveyed offsite by a drainage system. We do not reconunend onsite infiltration due to the low permeability soil that underlies the site. LIMITATIONS We have prepared this report for use by Cruz/Loranger, and members of their design team, for use in the design of a portion of this project. The data used in preparing this report and this report should be provided to prospective contractors for their bidding or estimating purposes only. Our report conclusions and interpretations are based on data from others and limited site reconnaissance, and should not be construed as a warranty of the subsurface conditions. Variations in subsurface conditions are possible between the explorations and may also occur with time. A contingency for unanticipated conditions should be included in the budget and schedule. Sufficient monitoring, testing and consultation should be provided by our firm during construction to confirm that the conditions encountered are consistent with those indicated by the explorations, to provide recommendations for design changes should the conditions revealed during the work differ from those anticipated, and to evaluate whether earthwork and foundation installation activities comply with contract plans and specifications. If there are any changes in the loads, grades, locations, configurations or type of facilities to be constructed, the conclusions and recommendations presented in this report may not be fully applicable. If such changes are made, we should be given the opportunity to review our reconunendations and provide written modifications or verifications, as appropriate. Within the limitations of scope, schedule and budget, our services have been executed in accordance with generally accepted practices in this area at the time this report was prepared. No other conditions express or implied, should be understood. Sincerely, LD Engineering, LLC Leonard Difrancesco, MS, PE Principal LD Engineering LLC 11 Cruz/Loranger Site .. }.fViA! :_: [ef~f LD Engineering LLc Site Vicinity Map ,~g,.,,,.,,,-,1 I I 12 Cruz!Loranger Site 0 0.7 1.4 2.1 2.8 3.5 kfll USGS Site Location Map LD Engineering LLC 13 Cruz/Loranger Site Natural R~roes Conservatioo SeNice Scil Map-King County Area. W0shington Soil M2p-King County Are;,., Washington Weo S(>I Survey 2.0 Nal,ona• Cooperatve So~ Survey Map Unit Legend - King County Area, Washington (WAB33) Ma:p Unll Symbol M_ap Unit Name I A1;r&S ln_AOI AgC A!derwood gravelly sandy loam, I 6 tc 15 percent slopes i Totals fC'(" hea of Interest (AO!) LO Engineering LLC Pai"cent-Cf AOI 1.1 1.1 100.0% 100.0% 9113120()7 Paga 1 of3 14 Cruz/Loranger Site So1: Ma.,....Km~ Coonly hea. Wa,hington MAP LEGEND MAP INFORMATION LD Engineering LLc .._,.aol'll'C....,Sl(AOl) AIH or .. 1 .... a (AOO '"" :.:J SoM Mop Untts Spedlll PolnlFaahJrn ~·; ·-· " l\or,-Pt * Clay Spol Cl<><,od D"P'e..;cw, X G!o""'I Pff a .. verty :5po1 .. ~00· A UIYII Fl""' .. ·-• Miu or Quarry @ Misc ... na ..... W.lllr • P••1anlllW.1,u Rode OU1erop + SolineS~ Sandy SpDI s ..... ,.iy Eroded Spot • Sini~ole > Slide or,Sl;p • So:kSpot • Spcilhn 0 S1i,ny6pd Nat1,1ral Rasc1Jrco Consll!Vatlon Ser\llce 0:, Vary Stc,,y Spot ' V,.,,t Spot o~, .. &pedal Uno FealuCM; Gulf), Shc<t Sleep Slope ,, ~,. Polhloi!Featuru Mllnltlpall~u 0 CCH D Urt•n Ar ... , WattrFHIUr1'$ E:!l Ocean< Streom,and Canols Tranopurta!lon +H-R.,1, ,o_ -''·'"'"''tek,g,,.,,y, IJS Roulo• StateH,~hw•y• ~ '.ocal RooJ> Olh~, Ro,,;!s O~glnal s.oll S!.l=ymep she9!5 Wl!re prepared al p.rbll~Uon sc;ale Viewing scale and prinbng seele, hawe11er. mayVIIJ':I from the original. Please rely on lhe bar scale Oil each map sheet f,:r ,.roper map measurements Soun::11 (JI Map: Natural Resources COl1seN8hon Swii~ Web S<:il Survey IJRL http://websoilsurvey.nn:s.usda.~OII Coad,nate sygem: UTM Zone 10N This produCI Is genera lad tom1he USDA-NRCScerlifled data psd theversien date(s) lls1ed below. Soi Sorwy Areta Ki!lg Ccimly Area, Washington survey !Vea Data: Version 4, Nev 21. 2006 Ds.te(s) aerial images w,,re photographed· 7/10/1990: 7/18/1990 The <Ylh"'hoto er other base map oo which tne sail ~nes were CQ!Tlj'.l\lad alld dl_gil!Zad probably dlffen; fr<Yn lhe background lma~ry displayed on these maps. As a resul, SQl11e minor sliiftin'1 of map uml boundaries may be ....;dent. 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I •I : : : I!: I I 500 100 10 % COBBLES % GRAVEL 0.0 28.9 SIEVE PERCENT SPEC: SIZE FINER PERCENT 2 in. 100.0 1.25 in. 92.1 I in. 92.1 0.75 in. 86.4 0.625 in. 85.2 0.5 in. 80.0 0.375 in. 77.3 0.25 in. 73.7 #4 71.1 #10 64.5 #40 53.8 #100 35.1 #200 26.5 • (no specification provided) Sample No.: 3267 Location: Cruz Site, H Checked B : W. Hansen PASS? (X=NO) 1 0,1 0.01 0.001 GRAIN SIZE -mm %SAND %SILT %CLAY 44.6 26.5 Soil Description Submitted Sample #3267 (Sample A): Brown silty sand with gravel Atterberg Limits (ASTM D 43181 PL= NT LL= NT Pl= NT Classification USCS= SM AASHTO= A-2-4(0) Coefficients 0 60= o.799 015= Cc= 050= 0.336 010= Date Tested: 6/19/2007 Tested By: A. Duong Remarks Classification (ASTM D2487) Natural Moisture (ASTM D2216): 16.7% Test Equipment ID: 5 Date Sampled: 6/18/2007 Elev./Depth: from 2 feet Client: LD Engineering, LLC I OTTO ROS & ASSOCIATES, INC. l:·ect: Cruz/ Loranger Residence Renton , :.e_ct No: 07-426 0:: w z u:: f-z w u 0:: Lil Cl. Particle Size Distribution Report -ASTM D 422 e C C: C: !!=~j§i ... ; ~ii~!!~ " 0 1111 :\! i I :11 i I ' i ,ii 1:,, 111:,, II I ',,·, 1' I ! j I i I II i '11 i 111! 1' '1 • I ' I i '\-k-~ I 111 I I 1 •, I I I I , I: ,; : 1; 1 i: : I I'/!•/ 11 I! ! ii:, 'Nl_1_11 / ! 11: I I 11111' 1' II I, II '11 I,! I '11 __ 1_1 J:1 I: ; h1id : 1 :, , 'I •i, r ~ I Ii ! f! I ! 1111 ~i ~ i/J /::I' II/! I I j_r-t----1 i 11 1 I [ I Ii !1 i---,-1 --"Ni I[-,,~~~, -t-1 ~ITT/ t-r-t-1 I ' I i I I //, 11 i: : 11 I 1• I I ! I 11''1\ j I I I 111 i 11 I 10 0 . ' 9 0 i i 8 0 I : I I 70 I I 60 ---;.-J_ ' I ! i 50 I ! I !]Ji Ii Ii • ~ , I 40 ' i'•,,1'il ,[1':,' i ;i· I ii I \' ',,· , •• ,,111,:,.',,l / 11 I .. ~' II II '1' .,11 '1 11,,•,,1 ' ' ' ' I I ii: ! ! I I I I N,lJ : I I I f--C-+----+---'---++i , nH--11 i---+-,, --'-i't-11 -1 --+-,, -1 -,---, ----+H--11 I'· •. j If+++-•. I --''1 -+11 --'-----+:':,, -HI,, 111--+-,,, t--+--+----1 . I J ,,' 111 I ! ill! : i 1:11 L_I ·--~' I' I : I ' Ii i I 1-+-+---'---,----H+i lµ.J .1 i l'-+-1-:-C-, _c___;_-H+I ! I +-HI I 'I/ i I 11111 I I ! i I -11 30 I I I I I ! 20 I I I ---+---'---HI-I i 11---:;-+::~i i-11 i I++ -;--+-I, I i H-i-"I !-+'-I +--'-i -i 111 +++I I i ~r ~, -1 i +I+ i+ i ·+1---+-! ----i I I I 10 I I I I I I I 0 I I 500 100 10 % COBBLES % GRAVEL 0.0 21.0 SIEVE PERCENT SPEC.' PASS? SIZE FINER PERCENT (X=NO) 2 in. 100.0 1.25 in. 93.2 1 in. 93.2 0.75 in. 92.5 0.625 in. 91.1 0.5 in. 88.1 0.3 75 in. 85.2 0.25 in. 81.3 #4 79.0 #10 73.3 #40 61.4 #100 39.2 #200 28.7 -(no spec1ficat10n provided) Sample No.: 3268 Source of Sample: Location: Cruz Site, Hole 2/J// Checked 8 : W. Hansen / / . 1 0.1 0.01 0.001 GRAIN SIZE-mm %SAND %SILT %CLAY 50.3 28.7 Soil Description Submitted Sample #3268 (Sample B): Gray silty sand with gravel Atterberq Limits CASTM D 43181 PL= NT LL= NT Pl= NT USCS= SM 0 85= 9.32 D30= 0.0827 Cu= Date Tested: Classification AASHTO= A-2-4(0) Coefficients D50= 0.393 D50= 0.246 D15= D10= Cc= 6/2012007 Tested By: P. Kanikkeberg Remarks Classification (ASTM D2487) Natural Moisture (ASTM D2216): 15.6% Test Equipment ID: 5 Pro' ect Mana er Date Sampled: 6/1812007 Elev./Depth: 3 feet I OTTO ROSE 'A & ASSOCIATES, INC. Client: LD Engineering, LLC Project: Cruz/ Loranger Residence Renton Pro·ect No: 07-426 Particle Size Distribution Report -ASTM D 422 s ' ! S.5~~!~~ VO 000~8~8 90 : i ; I : i: : :: ' ~ I 1 • : • : I , ~'--+~-!-L-+-i-------++++-++-+-+--+-----1 100 , 1 , ,1 · "1 111 11-n r(J. 1 · i ,. 1 ! ~. 1, i 1; 1.•. 1 ·. 1 ; •. 1).11 1 11 1 11 1 1 1 • ,1 i 1 1 1, I 1 1, i I i; I i 1, 1 c"~I', -,~ _-•11 ~I.. I : I I I i , ' ,, , ,. ., " . . I . 80 i ' : I 1: I• : 1:1 I::. : ' : i 1 1 1 1 1 1 ! i 1 1 ,' l'lj :: 1 1 1 1. i )1•· 1 l .. •I 1 1 70 : I: I: ; : : ---+H-++-+' ~· +---'------'--+++H-+++-+--+----++++++-+-+--+-----1 ~ Ii ! . I I I Ii' I: 1 I I I :,' Ill I I ', ! ~ 60, '1. I' i I :; 1• I I, :1· I II \ 111,:,.11 I I I 2 50 +---+--+--~-41 +• '-+I r-+-,--/-1 -'-"r~,-----J:i-1. -1+-J-,_L•_, __ . .u+_,_14· --"--' '---'--0-----4L+++++---+--+-__._,_,_,_~'-----'-~--J ~w i I :. i[jl : I I 1111 I , : I , / \\j I I I 40 I I', 1 •, , Ii +-'· ''I-' H-f~l-+-+-'-~1+++-+-+-+--1-H++-+++---i---l Q_ !i 11 '1 ii : 11 ! ii ! ,: •I • 1 11 : I I ' 1 i: , 1 !, I, 1 . ', ! • ·1 I , 1 1 30 ; ·1-'--~· ~'+-1 !---+-+-'---+---+++++-+-+-+--l ! I i ' 1' ]·.· •. : I ,:.11 i :,i, i, •. •.i, •. :, I ','] I. i 20 I i : j : j i I : I I [i I_ ~· '_;;_I +-i-Jl--'•LI +-+-'--"+' +IW-J_L_,C_l --/-----:..;_+.++++---+-·--+------' I i ' 11 i 11 ! I ' I 11 !! i j: I I ' 1' I iii 11 I I ! I I I: i ! i I 101-+-+-~~t+-H-++-"-~+--~i+-'--+--!-J;-'----'-----'-4+!---+-+-4+-----'--·+++·l-l-ii----+-+--l+.W+-+-'--+-I --l 0 I I 1111 : I : I I 111111: i 11 11 : i 111 I I i I 500 100 10 % COBBLES % GRAVEL 0.0 10.8 SIEVE PERCENT SPEC."" PASS? SIZE FINER PERCENT (X=NO) 1.25 in. 100.0 I 1 in. 100.0 0.75 in. 99.0 0.625 in. 96.9 0.5 in. 94.5 0.375 in. 92.9 0.25 in. 90.7 #4 89.2 #10 84.9 #40 74.5 #100 50.4 #200 38.0 . (no spec1ficat10n provided) 1 0.1 0.01 0.001 GRAIN SIZE -mm %SAND % SILT %CLAY 51.2 38.0 Soil Description Submitted Sample #3269 (Sample C): Gray sihy sand Atterberg Limits tASTM D 4318) PL= NT LL= NT Pl= NT USCS= SM Das= 2.06 030= Cu= Date Tested: Classification MSHTO= A-4(0) Coefficients Dso= 0.224 Dso= 0.147 015= D10= Cc= 6/19/2007 Tested By: A. Duong Remarks Classification (ASTM D2487) Natural Moisture (ASTM D2216): 14.7% Test Equipment ID: 5 Title: Pro'ect Mana er Date Sampled: 6/18/2007 Elev./Depth: 10 feet & ASSOCIATES, INC. Client: LD Engineering, LLC Project: Cruz/ Loranger Residence Renton Pro·ect No: 07-426 Particle Size Distribution Report -ASTM D 422 s • ~ ~ ~ • • • 100 ' , ll•li r, lXJ~ !,• !1111 111• I ljj 11 •.11 j I · .. I'."' 11 I 11'1 'I' ill I , 90 I i ii 1:1 ii I clif\ i ~ :111. i '1! i 11, _,1_ -1 -,, •,,.-+-1,11. --, .J.111 !.i-, ·1f-" .. 1-+l-+--+t++++-+-i-: +I_, 80 i i Ii I I • f I ), !: 11 1 1 i : I : : I j j I 70 I ! I : /! I i i'~ij i1 i i 1 • I i I i 11 I E5 60t-+-+--i +-,-! -++l:*+lil!++I +-1,,'-i l11J"ilr; i !"~I , •. ,·11 I '11.• .. jlli1 111 ,I 11 !! ~ 1 ,1 I • I: ! I I 1 1 z 50 I I: 11 : i:. , , , ! , : I', : ; 40 ! : I 11 i I' I I i i 111 :: I ! I I i I IC " I ! 11 i I I o_ I ; I I Jll1 111 ! I !j 1 \,: 1 , , I 30 I • . : r :: i '1' i i • i Jlliil I 111 ' i' ---· -irrl. -i.:+-1 -'--'-+~"c--4)..1 "4-:1 ;.+: i +1 +--',--+++++-+11 -+-+1 -+---l ii:•j ·1 !, : IJJ l 'I • ·-!Jli1' 1' i 11 i .L.:.;_L__ I __ · '-:J.-+.:.+-'-' -.:J-' 1µ+.f+H-i---f+f-f+-t+-t-+---j 2 0f-f--i-i -+-c-+! jc+clH-11 +: ! i l :. ! ! ii ! 11 --'. i '1 I I ! i I I, 1 1 I I : I ' I ' I· ., , : Ii ! ' i •• i .· ii'. 101-+-"--+j +,--!'+++' '-i-+' +-+-' ~·'~-+'''+' +-I lc..'c-' '-' -'-+-+! H-!: ++-+-+'' -+-'-+~+-M++-fl-+-+--++j l+H-f-+-+--f--1 0 ! I I Iii I [! I I Ii 111 i i 11! 1111 : I 111 I I I! ! I 500 100 10 1 0.1 0.01 0.001 % COBBLES % GRAVEL 0.0 32.0 SIEVE PERCENT SPEC.' I SIZE FINER PERCENT 2 in. 100.0 1.25 in. 94.1 1 in. 94.1 0.75 in. 89.0 0.625 in. 86.3 0.5 in. 80.8 0.375 in. 76.4 0.25 in. 71.2 #4 68.0 #10 60.9 #40 48.7 #100 29.2 #200 20.8 • (no specification provided) Sample No.: 3270 Location: Loranger Site, I I PASS? (X=NO) GRAIN SIZE -mm % SAND % SILT %CLAY 47.2 20.8 Soil Description Submitted Sample #3270 (Sample E): Brown silty sand with gravel Atterberg Limits (ASTM D 43181 PL= NT LL= NT Pl= NT Classification USCS= SM AASHTO= A-1-b Des= 1s.o D30= 0.158 Cu= Coefficients Dea= u1 D15= Cc= D50= 0.464 D10= Date Tested: 6/20/2007 Tested By: P. Kanikkeberg Remarks Classification (ASTM D2487) Natural Moisture (ASTM D2216): 14.2% Test Equipment ID: 5 Date Sampled: 6/18/2007 Elev./Depth: 3 feet Checked B : W. Hansen Pro'ectMana er OTTO Ros ii Client: LD Engineering, LLC I Project: Crud Loranger Residence I Renton I & ASSOCIATES, INC, I Pro'ect No: 07-426 Particle Size Distribution Report -ASTM D 422 ~ .s~~s~~J ~ ~g~~§~~ 100 ~1, ~! -"""·-"-"t-, 1 ?--=,"'~ .. = ,1, 1 . ,· • , ·, • 1 • 1 · · - 1 1 ·1 , , , 1 , 1 /II 1 , 1 Ii 1"1 1 11 l : i . ~ IT1"' I i ! I I 1, i 11 I i 11 ', I•,' I' 1 1 1 1 I 111: ,.1 i1 i 90 f-i--+-+-'--+' ,.;;'~ I ,, : : ': : Tj'f{....._ , I' 1 j I 1 1 80 I : I I I 1: i ;: ii Ii ! 1~~~--~~1+:::+-Jf+.;ll-+l--li~-1 4,/H-:I +-I i!-; /!-+--+-++++, l++-+-i +l--+---1 II ,i 1 1 11 1. 1 • I i 1 1.1 ! I I I i j 1 1 1:i I 11. : 11' •11 1 • I I 70 1:1 { : 1 ; 1: ,:11:' 1 : ---'.+;+:1+-µ'' '~:·;-!,\ ~11-'-+-'-~++'-+-+-+-~4+++++- I I I '11,111 ,·, •.·: -j: II' K' 1 I/' I I ~ 50 11 ' ! i I 1· i: ,, i/1/ I I I I 1 1 I I Ii 1\ ! 1111 r I I II i I I ~ I I I II 'I I 111111 I 1 1 /i i ! I ! \{jii i ! : ' I I I 11 i is: 40 i ! ' ii : ; I 111 j i // I II 'Ii, .,/ '111 · '1 30f-+-~+'~~--1:.1._4°lil++i +i·+-li'-• -+'lic._ie-ll-"•~'--''--:.+''+' e-l+-'"-l-+--+~'--'"--e!+--!-!-+-+--+++++-H-+-+---1 ' I I II ! 1·.·· '1' I 1' ii.. ! II ! 1' I : ' i I :I 11 I i I I I I I . i I • I : i I , I ! I '-·~lel-'!-h1 14· --+--'-!___.__..:J-Li+i I+-+! -!-' +' -!-----:+I+++-'-! +--'-----J ~:J ~ I 1 11 I I! j : :11 / ! I i ' I ! ; 11 i i i I I i I I I o 11 I 111111 I I iii 111 : i ii 11111 I 1111 I I I 11 111 I 500 100 10 % COBBLES % GRAVEL 0,0 SIEVE PERCENT SIZE FINER 2 in. 100,0 1.25 in. 100,0 I in. 100.0 0.75 in. 97.6 0.625 in. 97.6 0,5 in. 97.0 0.375 in. 95.2 0,25 in. 93.2 #4 91.7 #10 88, 1 #40 77,7 #100 52.5 #200 39.7 . (no specification provided) Sample No.: 3271 8.3 SPEC.' PERCENT Location: Loranger Site, H e Checked B : W, Hansen OTTO ROS PASS? (X=NO) 1 0,1 0,01 0,001 GRAIN SIZE -mm %SAND % SILT % CLAY 52.0 39.7 Soil Description Submitted Sample #3271 (Sample F): Gray silty sand Atterberg Limits CASTM D 43181 PL= NT LL= NT Pl= NT Classification USCS= SM AASHTO= A-4(0) D50= 0.134 D10= Date Tested: 6/19/2007 Tested By: A. Duong, P. Remarks Classification (ASTM D2487) Natural Moisture (ASTM D2216): 15.0% Test Equipment ID: 5 Kanikkeberg Date Sampled: 6/18/2007 Elev./Depth: 10 feet & ASSOCIATES, INC. Client: LO Engineering, LLC Project: Cruz/ Loranger Residence Renton Pro·ect No: 07-426 28