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HomeMy WebLinkAboutSWP272870(1) D-a� 7v TECHNICAL INFORMATION REPORT FOR 9 W i RENTON SAFEWAY FUEL STATION STORE NO. 1563 FOR SSOE, INC. 3015 112TH AVENUE NORTHEAST SUITE 101 BELLEVUE, WA 98004 BY f JELL 1 7 2000 BUSH, ROED & HITCHINGS, INC. 2009 MINOR AVENUE EAST SEATTLE, WA 98102 (206) 323-4144 p o\VAS tick JOB NO. 96298.04 �' P 7 JUNE 7, 2000 'PscI vs `�G��' REVISED JULY 6, 2000 NAL EXPIRES 6/11/ O- 1 448 /C(D c-- vW 41 g 0OW4211 • I. PROJECT OVERVIEW This project proposes to construct a fuel station addition to the existing Safeway store. This fuel station will be located at the southwest corner of the site, near the northeast corner of the intersection of Rainier Avenue South and South Third Street. Approximately 0.48 acres will be disturbed during construction, 0.05 acres of landscaping and 0.43 acres of impervious surfaces. Development of the fuel station will include grading and installation of sewer, storm, fire protection, and domestic water facilities. 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Izn6.la f J ,�sM CT 1 f t•m- I* ` sr 16SItl !'n 1120pt 165111 sl L F• .,r IIAtlr l �R/,l pplx 1.k"II, �•'. Fy�'.z('- .t) ...I- sl .�flh.t'SE 164TH S tl 1 rntAn 2 y.�ry r �+•1z�1.t .IYIH tl •n SI \\., ! l '�• IL' 1161 �' tYi ^Krp +% { f I r•y I'.„ t , 1H sT n �E n.6w ,.r4I) ,�r [[ .}�� / 1(�,+, i, 7i ��J a Imw,l Ri Sr. FAIR. ` r s N Sr Term s�xl `(' u 1e6m :5 Ir lI'�,T~'� / u •'/1 r '� _i k.lti _ lenx.. r 1 x;r•r �r.i �+ �" (7 < h .. a � < � J.SL 16/IM.. ` tt � $ »I.INNLE$A •.o i �r'r r r ,Y H 11 N11B(Mll II$ X: ^5F I RIN tl 1691H — ST SF 1691H 01 S� •4. �.•" W .c SE t]O1N SI sl 1691N IO 1/OIN 5± �•. •Y\3 J}fill.i Se-, �D�A• �m� - 8 TN ST S W .. Sf 112N0 -' fo ss ss 2l_.• �, IIB j1 I r`y5j •f• r� tOBf10 a -�F y Si sE ,1'rxD ST.-. St 112ND•Lrl` a�~ '• I I��' 1n I< ST 5141 Q N >< i H SF II I'm Sr 51 rhrh 531 ' "� 12200 .-.it - v '�,"•.r SE s� St Irlsl,} rl ,y Si S I! lr.rx SI 0 - iy' I 12M `I f5 1 �:: '< YEf� sE IrsIN ^� i1erK'�, `« 'r ` - 0.os. SE 176T11.ST. Av SL ST PfTR0��j5K� Sal. klr �e/"K ufen ':\ o a a s2 161H f 11 sl\ z`P�� G a�r.rxi' s R Z • R 1 wrm n a~ FAfANR)O 111 . o. -_.._. r�7�. i' YR, � " 1 �'1 .. xll rl-.. � •U 17101�I 14 NIRIggM -' -__--' �.•� .....-__ • IL PRELIMINARY CONDITIONS SUMMARY The entire Safeway site has recently been redeveloped to accommodate the new Safeway store, parking areas and future building pads. The area that is slated to become the new fuel station currently serves as a parking area. Because it has all ready been developed for commercial use, there is minimal slope throughout the site. The vacated Lake Avenue South right-of-way runs through the west portion of the site and contains existing storm, sewer and water lines. The existing storm conveyance system was sized for the entire Safeway site in accordance with the 1990 King County Surface Water Manual. This storm system includes catch basins, storm lines, rain leaders, footing drains, and an underground detention vault. Stormwater collected by this system ultimately discharges into a 24-inch storm drainage line located in the vacated Lake Avenue South right-of-way. A geotechnical investigation has been prepared by Earth Consultants, Inc. and is available under separate cover. • 5 • III. OFF-SITE ANALYSIS Stormwater collected by the existing storm drainage system is discharged into a 24-inch concrete storm line located in the vacated Lake Avenue South right-of-way. This line continues southwest under Rainer Avenue South and drains to a 50-inch concrete storm line. The storm system turns west, bordering the south side of Sunset Boulevard, then south and follows Hardie Avenue Southwest. The storm system proceeds southeast under the railroad, then southwest and travels along the south side of the railroad. The storm system then turns southwest and connects to a 54- inch concrete storm line, then proceeds west. This location is approximately one-quarter mile downstream of the site. • • l•; • IV. RETENTION/DETENTION ANALYSIS & DESIGN Storm detention and water quality have previously been designed for the entire Safeway site. The underground vault provides both detention and water guality treatment, and has been sized for the 100-year/24-hour desi per the 1990 King County Surface a ign Manual (KCSWM) usin a Santa Barbara Urban Hydrograph (SBUH) method. The detention vault has een ua t y reatment for all proposed pavement areas. Because the area of the proposed fuel station has all ready been included in the above calculations, no additional detention or water quality facilities will be required. Catch basins, pipes, and rain leaders will be used to convey stormwater from the fuel station to the existing on-site storm system and ultimately to the existing on-site detention tank. Runoff from the concrete pad (located beneath the canopy)will be collected separately from all other on-site stormwater. Concrete V-gutters will be located beneath the perimeter of the canopy and will collect all runoff from the concrete pad. The V-gutters will transport stormwater to a series of catch basins that will discharge to an oil-water separator and ultimately, to an existing twelve-inch sanitary line located in the vacated Lake Avenue South right-of-way. s V. CONVEYANCE SYSTEMS ANALYSIS AND DESIGN • • • • • CONVEYANCE SYSTEM DESIGN Project Name: Safeway Store 91563; Renton,WA By: MKA Project Number: 96298.04 Date: 7/6/2000 DRAINAGE CRITERIA: City of Renton;1990 King County Surface Water Design Manual RAINFALL METHOD: Rational Method DESIGN STORM: 100YR/24HR P100(in)= 3.9 aR= 2.61 bR= 0.63 iR=aR'Tc^(-bR)and I=P"iR FROM TO A C CA CAtot Tc I Q DIA n S Qf Vf Q/Qf L CB5 C134 0.07 0.90 0.06 0.06 6.0 3.3 0.21 8 0.012 0.0050 0.94 2.7 0.22 70 CB4 CB3 0.03 0.90 0.03 0.09 6.0 3.3 0.30 8 0.012 0.0050 0.94 2.7 0.32 62 EX. CB CB3 0.03 0.90 0.03 0.03 6.0 3.3 0.09 8 0.012 0.0140 1.57 4.5 0.06 57 CB3 C132 0.69 0.90 0.08 0.20 6.0 3.3 0.65 8 0.012 0.0140 1.57 4.5 0.42 62 C131 C132 0.11 0.90 0.10 0.10 6.0 3.3 0.33 8 0.012 0.0100 1.33 3.8 0.25 26 CB2 EX. SYSTEM 0.05 0.90 0.05 0.34 6.0 3.3 1.13 12 0.012 0.0080 3.49 4.4 0.32 87 PIPE DIA. (FT)= 12 SLOPE(FT/FT)= 0.005 N = 0.012 Q= 1.49XAXR^2/3XS^1/2/N = 2.76 CFS t VASA i BAS 3t 2216, sf 0.05 oc 8 2 C 1 8D MH B SIN 1 TE = 31.36 3:270 sf IE 20.96 2'N ; 0 08 4C IE = 25.21 ) 1 N CB E I IE = 19.06 C NELbASIN 3 < TE=30 �.. IE=27. 7( W 3810 ;sf IE=26. 7(12'N 0.09ac ROOF.A 1390''sf j B Q.03 ac --- P� F.F.=31.9 BAST RQ, BASIN ,S BASIN 3A 1220 sf 1.390 sf 1731 f — — — 0.03 a 0:0 ac 0.04 c I�y,C.CB 152�4 sf 0.03 ac CB L J HH CB e ............. 32 1 . HH H .......... _ ... I m0 (;" EHH - 2 C§EHH4 <.:EHH LP EC � . --- - - --- ®EHH d: .. CB TYPE I --- _................1.2' R yy( TE=31.24)..,TIE=29.74 m N R U-ST, R E E.T JOB NO SCALE 1•=30' DRAWN MKA CHECKED PAD DATE 6/6/00 REFER TO CIVIL SHEET of I H, ROED do HITCHINGS, INC. DEVELOPED BASIN MAP CRSLCI IL ENGINEERS & LAND SURVEYORS SSOE, INC. 2009 MINOR AVE. EAST, SEATTLE, WA 98102 (206) 323-4144 FAX (206) 323-7135 SAFEWAY #1563 FUEL STATION ADDITION 1-800-935-0508 E—MAIL: INFO®BRHINC.COM U: \96298-04\BASIN.dwg ,o VI. SPECIAL REPORTS AND STUDIES A Geotechnical Engineering Report has been prepared by Earth Consultants, Inc. and is available under separate cover. • i VII. BASIN AND COMMUNITY PLANNING AREAS (N.A.) ! 7 i VIII. OTHER PERMITS (N.A.) i ' • IX. EROSION/SEDIMENTATION CONTROL DESIGN l. Contact the City of Renton to schedule and attend a preconstruction meeting. 2. Install catch basin protection as indicated on the erosion control plan. 3. All temporary and permanent erosion control measures shall be maintained and repaired as needed to assure continued performance. These measures shall be repaired to their original design condition. 4. Install temporary construction entrance. S. Prior to any construction the contractor shall review the recommendations of the site geotechnical engineering report prepared by Earth Consultants Inc., dated July 2, 1996. 6. Remove existing utilities and install new utilities and storm drainage structures as detailed on the plans. Trench excavations shall be observed in the field by and on-site soils • engineer. It may be necessary to install geotextile fabric in the trench prior to placement of granular bedding for pipes and catch basins. 7. Construct new building. During the construction period, any and all pollutants other than sediment which are used on-site shall be handled and disposed of in a manner which does not cause contamination of stormwater. 8. Final grade and pave site. 9. Landscape or hydroseed all exposed areas. 10. Clean storm drainage system (do not flush) after vegetation has been established. 11. Remove all erosion control measures when entire site is stabilized. All temporary erosion control measures shall be removed 30 days after final site stabilization or after they are no longer needed. Trapped sediment shall be removed or stabilized on-site. Disturbed areas resulting from sediment removal shall be permanently stabilized. 12. Final inspection. • • X. BOND QUANTITIES WORKSHEET, RETENTION/DETENTION FACILITY SUMMARY SHEET AND DELINEATION OF COVENANT (N/A) • is XI. MAINTENANCE AND OPERATIONS MANUAL (N.A. - No new storm retention/detention facilities required) • Ito APPENDIX • Page 1 of 2 King County Building and Land Development Division • TECHNICAL INFORMATION REPORT (TIR) WORKSHEET PART I PROJECT OWNER AND PART 2 • -•JEC LOCATION PROJECTD DESCRIPTION Project Owner SAFE WAY . JjJ G Project Name `° r"u ` `p r o Pl Address i i Z7 12�i. AI r WeiS Location Phone Township 934 Project Engineer PE�Ko 1)C4a7,JkAAtJ Range `S E Company S&AH, R090 , N 17LNidbS,idC Section el P Y �©`9 M�n ,94c Av,&, E. �RTTcE`,w Project Size 0146 AC _ Address Phone (�c 9�.�-�1i�1 Upstream Drainage Basin Size d AC k ) 71r�o2. PART 3 TYPE OF • OTHER 0 Subdivision 0 DOF/G HPA Shoreline Management 0 Short Subdivision 0 COE 404 Rockery E:1 Grading E::] DOE Dam Safety ED Structural Vaults W Commercial 0 FEMA Floodplain E:1 Other N M Other F-] COE Wetlands 0 HPA COMMUNITYPART 5 SITE DRAINAGE BASIN Community Drainage Basin tJ ti i h koe n i o E ,E;I e4 c./ /?J y'eY u _fi.► PART 6 SITE CHARACTERISTICS 0 River E::] Floodplain _ --- _-- F-1 Stream M Wetlands _ 0 Critical Stream Reach Seeps/Springs 0 Depress i ons/Swales High Groundwater Table 0 Lake 0 Groundwater Recharge E::] Steep Slopes _ Other El Lakeside/Erosion Hazard ,lo�acPART 7 SOILS Soil Type Slopes Erosion Potential Erosive Velocities Sl,L,fyS&r4J) 5iIfJbjSi(,r-lLL ,10inlldvM t vu i•.fic4c i4C El Additional Sheets Attatched 1/90 ! Jr Page 2 of 2 King County Building and Land Development Division TECHNICAL INFORMATION REPORT (TIR) WORKSHEET DEVELOPMENTPART 8 • REFERENCE LIMITATION/SITE CONSTRAINT E] Ch.4-Downstream Analysis F-1 -- A — E-1 - - —- o --- -- - - - - - 0 Additional Sheets Attatched REQUIREMENTSPART 9 ESC MINIMUM ESC REQUIREMENTS MINIMUM ESC REQUIREMENTS DURING CONSTRUCTION FOLLOWING CONSTRUCTION El Sedimentation Facilities Stabilize Exposed Surface 4 Stabilized Construction Entrance Remove and Restore Temporary ESC Facilities [ l] Perimeter Runoff Control Clean and Remove All Silt and Debris 0 Clearing and Grading Restrictions Ensure Operation of Permanent Facilities Cover Practices E] Flag Limits of NGPES Ek Construction Sequence Other E] Other PART 10 SURFACE WATER SYSTEM �444 Grass Lined Channel El Tank E-J Infiltration Method of Analysis Pipe System Ell Vault 0 Depression Open Channel El Energy Dissapator [� Flow Dispersal Compensation/Mitigation E� Dry Pond E] Wetland EJ Waiver of Eliminated Site Storage EJ Wet Pond 1:71 Stream El Regional Detention - - BriefDescriptionofSystemOperation CltlilCt/I}nlGc SSTEh( CcrUfJTht� ��FjLj� ��}�i�(i, f��('El;. /�nlD jZkled -� P _�ZS TvG c irirb-c� rU fix. ,�1kFci��y o�T. �i�ui� LILT rrw�T�( ` �iu ?J Facility Related Site Limitations T v 2 4" S Tv�AA LiAl,-6 / A i-E A%- 'E /e G t4T -o tY Additional Sheets Attate ed Reference Facility Limitation PART 11 STRUCTURAL ANALYSIS PART 12 EASEMENTS/TRACTS (May require special structural review) � Drainage Easement [7:1 Cast in Place Vault [] Other Access Easement [� Retaining Wall 0 Native Growth Protection Easement El Rockery>4'High N/A Tract N/A EA Structural on Steep Slope F-1 Other PART 14 SIGNATURE OF -• • I or a civil engineer under my supervision have visited the site. Actual site conditions as observed were incorporated into this worksheet and the attatchments. To the best of my knowledge the information provided Ot here is accurate. sy nre 1/90 • TEC14NICAL INFORMATION REPORT FOR RENTON SAFEWAY STORE NO. 1563 FOR SAFEWAY, INC. P.O. BOX 85001 BELLEVUE, WASHINGTON • BY BUSH, ROED& HITCHINGS, INC. 2009 MINOR AVENUE EAST SEATTLE, WA 98102 (206) 323-4144 JOB NO. 96298.02 JULY 30, 1998 20703 o EXPIRES r 2/1 TABLE OF CONTENTS • I. PROJECT OVERVIEW I H. PRELIMINARY CONDITIONS SUMMARY 3 III. OFF-SITE ANALYSIS 7 IV. RETENTION/DETEN'TION ANALYSIS AND DESIGN 8 V. CONVEYANCE SYSTEMS ANALYSIS AND DESIGN 38 VI. SPECIAL REPORTS AND STUDIES 46 VII. BASIN AND COMMUNITY PLANNING AREAS 47 VIII. OTHER PERMITS 48 IX. EROSION/SEDIlVIENTATION CONTROL DESIGN 49 X. BOND QUANTITIES WORKSHEET,RETENTION/DyTENTION 53 FACILITY SUMMARY SHEET AND SKETCH, ANI� DECLARATION OF COVENANT XI. MAINTENANCE AND OPERATIONS MANUAL 54 • • • I. PROJECT OVERVIEW This project consists of the demolition of the existing Safeway store, A& H Drugstore, and other existing shops located on the site, and the construction of a new Safeway store. The site is located near the Northeast corner of Rainier Avenue South and South Third Street(see vicinity map on page 2). • The total development area is approximately 5.5 acres and consists of about 0.28 acres of landscaping and 5.22 acres of impervious surfaces. Site development includes grading and installation of sewer, storm, fire protection, and domestic water facilities. Stormwater facilities are designed per King County guidelines and include a detention vault to provide water quality and match the site's existing stormwater release Aps. An erosion control plan has been developed to restrict silt-laden water from leaving the site during construction. Calculations for the erosion control sediment trap can be found in Section IX. • / - ,,���A/^� null - � R' E V wA�,J 1 6TH ST /}y * R V E IN 1 1 IS i, Ky (� F - n•'Y' °�S~ 16� < +_ _ _ ` M N = �. _ r «m� p , , S[ Il,lll S, [yam 1 Ix .l 7� ,� `'� ■l is omr H S = R � � -`�� �;A IE�! <<�S I �:K a:..� I u IrsHl sl L_I I.Ilel.rt � •f x' Is�11µ T � ,t- Go I x[ 6 �,- I t sE 116111 �n � r��l 81HJ einol" �LI �$ ; � al W /< < <N< �<$ •�rt� � d �+ NE ■< rRmEV Gu.� � 4TH _ a g r j ■, T s SE 128TH ST " sr � � � r a< e � . .•. I x,. . 4000 r` < ?• .. J < " ` _..�. 9. ...N. �� a BDDD O RENTON r'• .. Vl \` '� I . • AIR AID ► `8 1 1 RT WY S. 1.)zNo 2ND i Tls[ TCIg[N \• ,Jjz N �� ■, �7 m s[ i;itrl I ?No yv _ : ' IqA 8 s st C N 1 sr nl Sl 1 n S 18 REHRYI <I x,a H WSWTES M Q j� ESTATES SI S1 2ND I E cncTEm 16 AI/ '" uwl rL ��' �R F � ■ r I St�I I 1.16111 SI .I ntx RENTON AS R i " MrnI1R I Illy '.� [[ SUN i s 5 4TN S <<' �F „a. E `,4. '.f 1 m. 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SE_ 77ND ST... ,I s 34 h ' '"l' SE I7 sr r9rx lei B f _q je� - I < iJg� it i1zNo Lll Q„ SE 17 S r`cr'l1`441 ST S ") t l I r"rx tr ` SL.113RD it ^ 51 b"ON+`Id 1 ~< 12 1 st)IID s[ Inv F, Yr TH `I` FS I i 9" ' Pl (� 11 n , }. d a I� g�S 16 sE I1srN. �ile7` I 2 i1�� � `f r s ,F.'3 SE I 176TH Si` _-"v..sS. �1jSKV ..0 ri .�a/'\SI Irs�sl rl �'si ST PfTR� EtN Stl s 4 r u y l5E 11 FAIAMW N' s u �{,�C„ C+Q' I �� � � t � � €I M n _ �� �� I •h eM�, sawRt %1 r.r ."r. ,• [ _ .' s I J _ .• � - u dl � RQ Sl� 176TN [ ' "'!^. �-1•� *`st, - l SFF 11,'ll I Si WIR MAP--- -_�sl— _.___.__l�___.._._._._... ._ .-_.■ • H. PRELIMINARY CONDITIONS SUMMARY ll In the existing condition, this site consists of several different properties. The site is composed primarily of impervious surfaces. There is an area within the site that has a gravelly, densely packed surface, and an area that is covered with light vegetation. Because the majority of the existing site has all ready been graded for commercial use, there is minimal slope throughout the site. There is a vacated right-of-way for Lake Avenue South that runs through the west side of the site. • Storm, sewer, and water lines are all located within this right-of-way. The existing Safeway obtains storm, sewer,water, and fire protection services from these lines. The Cedar River pipeline right-of- way corridor, owned by Seattle Public Utilities, runs through the north side of the site. This corridor is 65 feet wide and contains three water main trunk lines. The existing storm drainage system in the paved area of the site consists of a collection of catch basins. It is assumed that these catch basins ultimately discharge into the 24-inch storm drainage line in the vacated Lake Avenue South right-of-way. 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GEOTECHNICAL ENGINEERING STUDY �1 Safeway Stores, Inc. E-7323 July 2, 1996 Page 2 SITE CONDITIONS Surface The subject site is located to the east of Rainier Avenue South, between South Second Street and South Third Street (see Plate 1, Vicinity Map). The east portions of the site are currently occupied by an existing Safeway and parking area, and a small one story building. Along the south and west sides of the existing Safeway, the site is undeveloped. There are several fast food and commercial developments to the west of the development site along Rainier Avenue South and South Third Street. I The undeveloped areas to the south and west of the existing Safeway are generally flat. There are some lower depressed areas west of the existing Safeway, in the proposed pavement areas. It appears these areas received little or no fill during placement of the surrounding fills. The vegetation in the undeveloped areas generally consists of deciduous trees, small shrubs, and grasses. Subsurface The proposed building sites and pavement areas were explored by drilling seven borings at the approximate locations shown on Plate 2. Please refer to the Boring Logs, Plates A2 through • A13 for a more detailed description of the conditions encountered at the locations explored. A description of the field exploration methods is included in Appendix A. The following is a generalized description of the subsurface conditions encountered. Fill Varying depths of silty sand and sandy silt fill were encountered immediately below the surface at our boring locations. Fill depths encountered at our boring locations ranged between approximately three to ten feet. The fill encountered was generally classified as loose to medium dense silty sand and sandy silt (Unified Classifications SM and ML). At the time of our exploration, these soil units were generally wet and above their optimum moisture content. During dry weather, portions of the silty sand fill may be suitable for support of foundations, slab-on-grade floors and pavements, provided the fill can be prepared in accordance with the recommendations discussed in the "Site Preparation and General Earthwork" section of this report. Native Underlying the fill, varying deposits of silty sand, poorly graded sand, and poorly graded gravel, were generally encountered to the depths explored. Some very loose to loose deposits of sandy silt were also encountered at boring locations B-2 and B-5. The poorly graded sand • and poorly graded gravel (Unified Classifications SP and GP) were generally loose to dense. Earth Conaultant®. Inc. 7/k,t I M. OFF-SITE ANALYSIS Stormwater collected by the existing storm drainage system is discharged into the 24-inch concrete storm line located in the vacated Lake Avenue South right-of-way. This storm line continues southwest and under Ranier Avenue South where it empties into a 50-inch concrete storm line. The storm system borders the south side of Sunset Boulevard as it heads west, then turns south and follows Hardie Avenue Southwest. The storm line proceeds southeast under the railroad, turns southwest and travels along the south side of the railroad. The storm system turns southwest, connects into a 54-inch concrete storm line, and proceeds west. i sIA5 IV. RETENTION/DETENTION ANALYSIS & DESIGN The proposed underground storage detention vault for this site has been sized as specified in the King County Surface Water Design Manual for the 100 year/24-hour design storm using the Santa Barbara Urban Hydrograph(SBUH) method. Because the roof area flows do not need water quality treatment, the 1.53 acres of roof area will bypass the detention vault and drain directly into the 24-inch storm line in the vacated Lake Avenue South right-of-way. The discharge orifices in the vault have been sized such that the total peak discharge from the by-pass plus tank discharge is either equal to or less than the existing peak flow rates. Approximately 0.5 acres of existing pavement located between the proposed Safeway store and . the existing Gene's Restaurant have not been considered in the calculations. The existing pavement will not be replaced in this area and stormwater collected by the existing catch basins will be discharged into the stormline located in Shattuck Avenue. Discharge from the detention vault will also drain into the existing 24-inch storm line in the Lake Avenue South right-of-way. The detention vault has been designed to provide water quality treatment for the 3.67 acres of proposed pavement. The length and width dimensions of the vault provide a surface area equal to one percent of the proposed pavement area; water quality can therefore be achieved without a biofiltration swale. The depth of the wet vault was sized as specified in the King County Surface Water Design Manual for thewater quality storm using the Santa Barbara Urban Hydrograph (SBUH) method. This depth was calculated to be 4.0 feet. • -1/15 4 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL (2) CN values can be area weighted when they apply to pervious areas of similar CN's (within 20 CN points). However, high CN areas should not be combined with low CN areas (unless the low CN areas are less than 15% of the subbasin). In this case, separate hydrographs should be • generated and summed to form one hydrograph. FIGURE 3.5.2A HYDROLOGIC SOIL GROUP OF THE SOILS INKING COUNTY HYDROLOGIC HYDROLOGIC SOIL GROUP GROUP* SOIL GROUP GROUP* Alderwood C Orcas Peat D Arents, Alderwood Material C Oridia D Arents, Everett Material B Ovall C Beausite C Pilchuck C Bellingham D Puget D Briscot D Puyallup B Buckley D Ragnar B Coastal Beaches Variable Renton D Earlmont Silt Loam 0 Riverwash Variable Edgewick C Bahl C Everett A/B 'Sammamish D Indianola A Seattle D Kitsap C Shacar D Klaus C Si Sat C Mixed Alluvial Land Variable Snohomish D Newton A Sultan C Newberg g Fl om Nooksack C ji $pIj.s Normal Sandy Loam D WoodinvilleHIDEDHYDROLOGIC SOIL GROUP CLASSIFICATIONS1 it0Lt P A. (Low runoff potential). Soils having high infiltration rates, even when thoroughly wetted, and consg ��chiefly of deep, well-to-excessively drained sands or gravels. These soils have a high rate of wateUS E transmission. B. (Moderately low runoff potential). Sods having moderate infiltration rates when thoroughly wetted, and consisting chiefly of moderately fine to moderately coarse textures. These soils have a moderate rate of water transmission. C. (Moderately high runoff potentia,. Sods having slow infiltration rates when thoroughly wetted, and consisting chiefly of soils with a layer that impedes downward movement of water, of soils with moderately fine to fine textures. These sods have a slow rate of water transmission. D. (High runoff potential). Sods having very slow infiltration rates when thoroughly wetted and consisting chiefly of clay sods with a high swelling potential, sods with a permanent high water table, sods with a hardpan or clay layer at or near the surface, and shallow soils over nearly impervious material. These sods have a very slow rate of water transmission. From SCS, TR-55, Second Edition, June 1986, Exhibit A-1. Revisions made from SCS, Sol Interpretation Record, Form #5, September 1988. I 3.5.2-2 11/g2 KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TABLE 3.5.213 SCS WESTERN WASHINGTON RUNOFF CURVE NUMBERS SCS WESTERN WASHINGTON RUNOFF CURVE NUMBERS (Published by SCS in 1982) Runoff curve numbers for selected agricultural, suburban and urban land use for Type 1A rainfall distribution, 24-hour storm duration. CURVE NUMBERS BY HYDROLOGIC SOIL GROUP LAND USE DESCRIPTION A B C D Cultivated land(1): winter condition 86 91 94 95 Mountain open areas: low growing brush and grasslands 74 82 89 92 Meadow or pasture: 65 78 85 89 Wood or forest land: undisturbed or older second growth 42 64 76 81 Wood or forest land: young second growth or brush 55 72 81 86 Orchard: with cover crop 81 88 92 94 Open spaces, lawns, parks, golf courses, cemeteries, landscaping. good condition.- grass cover on 75% or more of the area 68 80 86 90 fair condition: grass cover on 50% to 75% of the area 77 V - X 92 Gravel roads and parking lots 76 �� 89 91 • Dirt roads and parking lots 72 87 89 Impervious surfaces, pavement, roofs, etc. / 98 98 98 Open water bodies: lakes, wetlands, ponds, etc. 100 100 100 100 Single Family Residential (2) Dwelling Unft/Gross Acre % Impervious (3) 1.0 DU/GA 15 Separate curve number 1.5 DU/GA 20 shall be selected 2.0 DU/GA 25 for pervious and 2.5 DU/GA 30 impervious portion 3.0 DU/GA 34 of the site or basin 3.5 DU/GA 38 4.0 DU/GA 42 4.5 DU/GA 46 5.0 DU/GA 48 5.5 DU/GA 50 6.0 DU/GA 52 6.5 DU/GA 54 7.0 DU/GA 56 Planned unit developments, % impervious condominiums, apartments, must be computed commercial business and industrial areas. (1) For a more detailed description of agricultural land use curve numbers refer to National Engineering Handbook, Section 4, Hydrology, Chapter 9, August 1972. (2) Assumes roof and driveway runoff is directed into street/storm system. • (3) The remaining pervious areas (lawn) are considered to be in good condition for these curve numbers. 3.5.2-3 11/92 • • i Q i Ate! *ilx pipe Bar -rem'";--.,; Me-IRK.K= ►W � - ,S isim 1p ►,; / FIN Dui .� k ;! =, TO I Z-�_ I � � r \ l .• Nr 4 •� • Q4 iN�l��,1 1, r 'K' ` iM� Id•� y f �►� IMF `� �� �� .. 1115, KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL where T, = time of concentration (min), and s m = number of flow segments Sheet Flow: Sheet flow is flow over plane surfaces. It usually occurs In the headwater of streams With sheet flow, the friction value (nj (a modified Manning's effective roughness coefficient that Includes the effect of raindrop impact; drag over the plane surface; obstacles such as litter, crop ridges, and rocks; and erosion and transportation of sediment) Is used. These n,values are for very shallow flow depths of about 0.1 foot and are only used for travel lengths up to 300 feet. Table 3.5.2.0 gives Manning's n,values for sheet flow for various surface conditions. For sheet flow up to 300 feet, use Manning's kinematic solution to directly compute T,: Sheet flow: Tt _ 0.42 (n,L)o.a uSCd Tvr Shee4- FLO rx (P2) U s (So) 0.6 where T, = travel time (min), n, = sheet flow Manning's effective roughness coefficient (from Table 3.5.2C), L = flow length (ft), P2 = 2-year, 24-hour rainfall (in), (see Figure 3.5.1 C) and S. = slope of hydraulic grade line (land slope, ft/ft) Velocity Equation A commonly used method of computing average velocity of flow, once it has measurable depth, is the following equation: = k ./soj ksed of+er inRiml 30o' of SNeef Flow . where: V = velocity (ft/s) k = time of concentration velocity factor (ft/s) S. = slope of flow path (ft/ft) "k" is computed for various land covers and channel characteristics with assumptions made for hydraulic radius using the following rearrangement of Manning's equation: k = (1.49 (R) ose' )/n. where R = an assumed hydraulic radius n = Manning's roughness coefficient for open channel flow (from Table 4.3.7E in Chapter 4) i 3.5.2-6 _. 1/90 ICING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL TABLE 3.&2C "a" AND "k" VALUES USED IN TIME CALCULATIONS FOR HYDROGRAPHS 'n.'Sheet Flow Equation MannkV's Vakm Igor the ksl1W 300 IN of Smooth sum(concrete.asphalt.gravel.or bare hand packed sod) Fallow fields or loose sod surface(no resbus) OAS CJtivated sod with reskfue cover(s<-020 N/1f) Q06 CJthr t sod with residue cover(S>0.20 ft/n) 0.17 Short prairie grass and lawns OAS Dense grasses 021 Bermuda 9mu 0.41 Range(natural) 0.13 Woods or forest with light underbrush a40 Woods or forest with dense underbrush 0.60 -Marring values for sheet Now only.from Overton and Meadows 1976(See TR35.1966) x Values used In Travel Tims/TLms of Carscen radon CajoAllora Shallow Conotntrated Flow (After the ksNit1300 R of sheet Now.R-0.1) k. 1. Forest with heavy ground fitter and meadows(n-0.10) 3 2_ Brushy ground with some trees(n-0.060) 5 3. Fallow or mWrt txn tillage activation(n -0.040) 6 4. High grass(n -0.035) 9 • 5. Short grass.pasture and Lawns(n-0.030) 11 1 a NeMy bare ground(n-0.025) 13 7. Paved and grave!areas(n-0.012) 27 CtwvW Flow(Intermittent) (AI the begkw*V of visible cherrwsels:R-02) k. 1. Rwessed swale with heavy ground Ymer(n -0.10) 5 2. Forested drainage course/ravine with defined channel bed(n-0.050) 10 I Rods-lined waterway(n-0.035) 15 4. Grassed waterway(n-0.030) 17 5. Earth-fined waterway(n.0.025) 20 6. CUP pipe(n-0.024) 21 7. Concrete pipe(0.012) 42 & Other waterways and pipes 0.500/n Charnel Flow(CdYlauous stream,R 9. Meandering stream with some pooh(n-04" 20 10_ Rodt4ised stream(n.0AM) 23 it. Grass-fined streams(n-0.030) 27 12. Other saaamsa,rrws-n aft chanssls and pip! 0 607/„-• "See Chapter S.Table 5.3.6C for adAkvW Malmitpd V mdm for open dwnela 3.SZ7 :_ • +I v + • + ` E C ' �M ' tAk V • Nil� y % +� o 4 I 1 O +s + +• y +� +• +v I \ \ i .y f I 44 I rc' ` •, i � ,�II r t �+ +• +i + .-'' i � �, `-10 � 11U1111 11U +i + C« i � t w t �, aftt fi '., � �► �i � ,�► , � ; �; o Cr I + It r 1- --�'— = 1�- ++ 'ta ~ �6 F,� +• t� +yam 1 e` /U/ w• will �2 SHATTUCK AVE. 44 •- - - - --• • • .� � �L � worm a,_a� _` r r 1 ( • j\ �, I oY ca \11 \1 Cr r I` Y i7 • kp r I Ii ` Q ill r f / 1 ) Li 1 ` � O - - - _ - SHATTUCK AVE. _ _ �I '�S 11� •L.' -ems:=A� a MINIM �/� �fll■I 1i �f' ��I �• , ( •Milli�� MOM �RM >mm��� grin I • . .. . _ 19/54 BRH Job No. : 6298'0 Z Date: H Y D R 0 6 R A P H I N P U T W 0 R K S H E E T Project : Rerrfoir Sa_frwac/ #1663 Basin Identification (S char): EOZsElo. E IOo Description (30 char):- 2.*rj2�ltir4et' loyLf=41.,Ir tit Is+ We Yr jye�ar Total Area: 5•0 OWCS r Precipitation: 2yr L.O Syr 10yr 2.4 2Syr SByr 108yr3.4 Hydrograph Numbers: _ 2yr I Syr 10yr Z. 2Syr S®yr 1 Myr 3 Time of Concentration: length slope(f4/0) surface type 'n' value time .95 o,ozq Gowe! 0.011 C.5 7 5 a.004 - K � �— 10 0.00 Ash kl 0.007 X - Total Travel Time: _7. 45mijuf ei Pervious Area: 2• 32 QG Land Use: IfI44 1/eje4t {7;e Soil Type: Hydrologic Group: Curve Number:_ 85 PEEVIOuS 48 cNtPEQvaccS ' HYD.INP File Basin Hydrograph Storage Discharge Level pool 3 INPUT, MODIFY OR BROWSE DATA •- ' BASIN ID E02 SBUH HYDROGRAPH .DESCRIPTION 2-YR. EXISTING STORM AREA (acres) 5 .500 RAINFALL CHOICES RAIN PRECIP (in) 2 . 00 1 . TYPE IA TIME INTERVAL (min) : 10 . 00 2 . TYPE I TIME OF CONC (min) : 7 .45 3 . TYPE II RAINFALL SELECTION: 6 4 . TYPE IIA ABSTRACT COEFF 0 .20 5 . TYPE 3 BASE FLOW (cfs) 0 . 000 6 . USER 1 STORM DUR (hrs) 24 . 000 7 . KC 7 DAY 8 . CUSTOM PERVIOUS PARCEL IMPERVIOUS PARCEL AREA: 2 . 320 acres AREA: 3 . 180 acres CN 85 . 00 CN 98 . 00 SUMMARY DATA PEAK HYDROGRAPH TIME: 8 . 00 hrs PEAK HYDROGRAPH FLOW: 1 . 8927 cfs TOTAL HYDROGRAPH VOL: 0 . 6239 ac-ft Tay HOME END Fl :Find F2 :New F3 :Get F4 :Tc-Calc F5 :Delete Pgup Pgdn F6 :Compute F7 : F8 :Method F9 :Template F10 :Exit • a 1/g4 File Basin Hydrograph Storage Discharge Level pool 3 INPUT, MODIFY OR BROWSE DATA � BASIN ID E10 SBUH HYDROGRAPH �4 -#2- DESCRIPTION 10-YR. EXISTING STORM AREA (acres) 5 .500 RAINFALL CHOICES RAIN PRECIP (in) 2 . 90 1 . TYPE IA TIME INTERVAL(min) : 10 . 00 2 . TYPE I TIME OF CONC (min) : 7 .45 3 . TYPE II RAINFALL SELECTION: 6 4 . TYPE IIA ABSTRACT COEFF 0 .20 5 . TYPE 3 BASE FLOW (cfs) 0 . 000 6 . USER 1 STORM DUR (hrs) 24 . 000 7 . KC 7 DAY 8 . CUSTOM PERVIOUS PARCEL IMPERVIOUS PARCEL AREA: 2 . 320 acres AREA: 3 . 180 acres CN 85 . 00 CN 98 . 00 SUMMARY DATA PEAK HYDROGRAPH TIME: 8 . 00 hrs PEAK HYDROGRAPH FLOW: 3 .0656 cfs TOTAL HYDROGRAPH VOL: 0 .9981 ac-ft T->4. HOME END F1 :Find F2 :New F3 :Get F4 :Tc-Calc F5 :Delete Pgup Pgdn F6 :Compute F7 : F8 :Method F9 :Template F10 :Exit • • File Basin Hydrograph Storage Discharge Level pool 3 INPUT, MODIFY OR BROWSE DATA BASIN ID E100 SBUH HYDROGRAPH NYd• ESCRIPTION 100-YR. EXISTING STORM ') 7AREA (acres) 5 .500 RAINFALL CHOICES RAIN PRECIP (in) 3 . 90 1 . TYPE IA TIME INTERVAL(min) : 10 .00 2 . TYPE I TIME OF CONC (min) : 7 .45 3 . TYPE II RAINFALL SELECTION: 6 4 . TYPE IIA ABSTRACT COEFF 0 .20 5 . TYPE 3 BASE FLOW (cfs) 0 . 000 6 . USER 1 STORM DUR (hrs) 24 . 000 7 . KC 7 DAY 8 . CUSTOM PERVIOUS PARCEL IMPERVIOUS PARCEL AREA: 2 . 320 acres AREA: 3 . 180 acres CN 85 . 00 CN 98 . 00 SUMMARY DATA PEAK HYDROGRAPH TIME: 8 . 00 hrs PEAK HYDROGRAPH FLOW: 4 .4150 cfs TOTAL HYDROGRAPH VOL: 1.4293 ac-ft T�4 HOME END Fl :Find F2 :New F3 :Get F4 :Tc-Calc F5:Delete Pgup Pgdn F6 :Compute F7 : F8 :Method F9 :Template F10 :Exit • • Z316,1 File Basin Hydrograph Storage Discharge Level pool 3 INPUT, MODIFY OR BROWSE DATA BASIN ID D0 .5 SBUH HYDROGRAPH )ESCRIPTION : WATER QUALITY STORM 7AREA (acres) 3 . 970 Y RAINFALL CHOICES RAIN PRECIP (in) 0 . 67 1 . TYPE IA TIME INTERVAL (min) : 10 . 00 2 . TYPE I TIME OF CONC (min) : 6 . 00 3 . TYPE II RAINFALL SELECTION: 6 4 . TYPE IIA ABSTRACT COEFF 0 .20 5 . TYPE 3 BASE FLOW (cfs) 0 . 000 6 . USER 1 STORM DUR (hrs) 24 . 000 7 . KC 7 DAY 8 . CUSTOM PERVIOUS PARCEL IMPERVIOUS PARCEL AREA: 0 .280 acres AREA: 3 .690 acres CN 80 . 00 CN 98 . 00 SUMMARY DATA PEAK HYDROGRAPH TIME: 7 . 83 hrs PEAK HYDROGRAPH FLOW: 0 .4771 cfs TOTAL HYDROGRAPH VOL: 0 .1463 ac-ft T--> HOME END F1 :Find F2 :New F3 :Get F4 :Tc-Calc F5 :Delete Pgup Pgdn F6 :Compute F7 : F8 :Method F9 :Template F10 :Exit • zq/5j File Basin Hydrograph Storage Discharge Level pool 3 INPUT, MODIFY OR BROWSE DATA BASIN ID D02 SBUH HYDROGRAPH lky&# 4 4DESCRIPTION 2-YR DEV. STORM - MINUS BLDG AREA (acres) 3 .970 RAINFALL CHOICES RAIN PRECIP (in) 2 . 00 1 . TYPE IA TIME INTERVAL(min) : 10 . 00 2 . TYPE I TIME OF CONC (min) : 6 .00 3 . TYPE II RAINFALL SELECTION: 6 4 . TYPE IIA ABSTRACT COEFF 0 .20 5 . TYPE 3 BASE FLOW (cfs) 0 . 000 6 . USER 1 STORM DUR (hrs) 24 . 000 7 . KC 7 DAY 8 . CUSTOM PERVIOUS PARCEL IMPERVIOUS PARCEL AREA: 0 . 280 acres AREA: 3 . 690 acres CN 80 . 00 CN 98 . 00 SUMMARY DATA PEAK HYDROGRAPH TIME: 7 . 83 hrs PEAK HYDROGRAPH FLOW: 1 . 8163 cfs TOTAL HYDROGRAPH VOL: 0 .5587 ac-ft T�4 HOME END F1 :Find F2 :New F3 :Get F4 :Tc-Calc F5 :Delete Pgup Pgdn F6 :Compute F7 : F8 :Method F9 :Template F10 :Exit i �ls 4 File Basin Hydrograph Storage Discharge Level pool 3 INPUT, MODIFY OR BROWSE DATA BASIN ID D10 SBUH HYDROGRAPH liESCRIPTION 10-YR DEV. STORM - MINUS BLDG AREA (acres) 3 .970 RAINFALL CHOICES RAIN PRECIP (in) 2 .90 1 . TYPE IA TIME INTERVAL(min) : 10 . 00 2 . TYPE I TIME OF CONC (min) : 6 . 00 3 . TYPE II RAINFALL SELECTION: 6 4 . TYPE IIA ABSTRACT COEFF 0 . 20 5 . TYPE 3 BASE FLOW (cfs) 0 . 000 6 . USER 1 STORM DUR (hrs) 24 . 000 7 . KC 7 DAY 8 . CUSTOM PER-�*TOUS PARCEL IMPERVIOUS PARCEL AREA: 0 .280 acres AREA: 3 . 690 acres CN 80 . 00 CN 98 . 00 SUMMARY DATA PEAK HYDROGRAPH TIME: 7 . 83 hrs PEAK HYDROGRAPH FLOW: 2 . 7341 cfs TOTAL HYDROGRAPH VOL: 0 .8481 ac-ft HOME END F1 :Find F2 :New F3 :Get F4 :Tc-Calc F5 :Delete Pgup Pgdn F6 :Compute F7 : F8 :Method F9 :Template F10 :Exit • • File Basin Hydrograph Storage Discharge Level pool 3 INPUT, MODIFY OR BROWSE DATA BASIN ID D100 SBUH HYDROGRAPH uYd. # DESCRIPTION 100-YR DEV. ST. - MINUS BLDG AREA (acres) 3 .970 RAINFALL CHOICES RAIN PRECIP (in) 3 .90 1 . TYPE IA TIME INTERVAL(min) : 10 . 00 2 . TYPE I TIME OF CONC (min) : 6 .00 3 . TYPE II RAINFALL SELECTION: 6 4 . TYPE IIA ABSTRACT COEFF 0 .20 5 . TYPE 3 BASE FLOW (cfs) 0 . 000 6 . USER 1 STORM DUR (hrs) 24 . 000 7 . KC 7 DAY 8 . CUSTOM PERVIOUS PARCEL IMPERVIOUS PARCEL AREA: 0 .280 acres AREA: 3 . 690 acres CN 80 . 00 CN 98 .00 SUMMARY DATA PEAK HYDROGRAPH TIME: 7 .83 hrs PEAK HYDROGRAPH FLOW: 3 .7553 cfs TOTAL HYDROGRAPH VOL: 1 .1728 ac-ft T�J HOME END Fl :Find F2 :New F3 :Get F4 :Tc-Calc F5 :Delete Pgup Pgdn F6 :Compute F7 : F8 :Method F9 :Template F10 :Exit • i 2,7159 File Basin Hydrograph Storage Discharge Level pool 3 INPUT, MODIFY OR BROWSE DATA ' I BASIN ID D02B SBUH HYDROGRAPH Tlyd •4 it DESCRIPTION 2-YR. DEV. STORM - FROM BLDGS . AREA (acres) 1 .530 RAINFALL CHOICES RAIN PRECIP (in) 2 . 00 1 . TYPE IA TIME INTERVAL(min) : 10 . 00 2 . TYPE I TIME OF CONC (min) : 6 . 00 3 . TYPE II RAINFALL SELECTION: 6 4 . TYPE IIA ABSTRACT COEFF 0 .20 5 . TYPE 3 BASE FLOW (cfs) 0 . 000 6 . USER 1 STORM DUR (hrs) 24 . 000 7 . KC 7 DAY 8 . CUSTOM PERVIOUS PARCEL IMPERVIOUS PARCEL AREA: 0 . 000 acres AREA: 1 . 530 acres CN 80 . 00 CN 98 . 00 SUMMARY DATA PEAK HYDROGRAPH TIME: 7 . 83 hrs PEAK HYDROGRAPH FLOW: 0 . 7430 cfs TOTAL HYDROGRAPH VOL: 0 .2262 ac-ft T-34 HOME END F1 :Find F2 :New F3 :Get F4 :Tc-Calc F5 :Delete Pgup Pgdn F6 :Compute F7 : F8 :Method F9 :Template F10 :Exit • • Ar/yj File Basin Hydrograph Storage Discharge Level pool 3 INPUT, MODIFY OR BROWSE DATA � y d �# 1Z BASIN ID D1UB SBUH HYDROGRAPH R .DESCRIPTION 10-YR. DEV. STORM - FROM BLDG AREA (acres) 1 .530 RAINFALL CHOICES RAIN PRECIP (in) 2 .90 1 . TYPE IA TIME INTERVAL(min) : 10 .00 2 . TYPE I TIME OF CONC (min) : 6 .00 3 . TYPE II RAINFALL SELECTION: 6 4 . TYPE IIA ABSTRACT COEFF 0 .20 5 . TYPE 3 BASE FLOW (cfs) 0 .000 6 . USER 1 STORM DUR (hrs) 24 .000 7 . KC 7 DAY 8 . CUSTOM PERVIOUS PARCEL IMPERVIOUS PARCEL AREA: 0 .000 acres AREA: 1 .530 acres CN 80 . 00 CN 98 .00 SUMMARY DATA PEAK HYDROGRAPH TIME: 7 . 83 hrs PEAK HYDROGRAPH FLOW: 1.1044 cfs TOTAL HYDROGRAPH VOL: 0 .3403 ac-ft T-*y HOME END F1:Find F2 :New F3 :Get F4 :Tc-Calc F5 :Delete Pgup Pgdn F6 :Compute F7 : F8 :Method F9 :Template F10 :Exit • • 2IfN File Basin Hydrograph Storage Discharge Level pool 3 INPUT, MODIFY OR BROWSE DATA 11 BASIN ID D100B SBUH HYDROGRAPH ry �•' �3 DESCRIPTION 100-YR. DEV. STORM - FROM BLDG AREA (acres) 1 . 530 RAINFALL CHOICES RAIN PRECIP (in) 3 . 90 1 . TYPE IA TIME INTERVAL(min) : 10 . 00 2 . TYPE I TIME OF CONC (min) : 6 . 00 3 . TYPE II RAINFALL SELECTION: 6 4 . TYPE IIA ABSTRACT COEFF 0 . 20 5 . TYPE 3 BASE FLOW (cfs) 0 . 000 6 . USER 1 STORM DUR (hrs) 24 . 000 7 . KC 7 DAY PERVIOUS PARCEL IMPERVIOUS PARCEL 8 . CUSTOM AREA: 0 . 000 acres AREA: 1 . 530 acres CN 80 . 00 CN 98 . 00 SUMMARY DATA PEAK HYDROGRAPH TIME: 7 . 83 hrs PEAK HYDROGRAPH FLOW: 1 .5022 cfs TOTAL HYDROGRAPH VOL: 0 .4673 ac-ft Tay HOME END Fl:Find F2 :New F3 :Get F4 :Tc-Calc F5 :Delete Pgup Pgdn F6 :Compute F7 : F8 :Method F9 :Template F10 :Exit 7/21/98 Bush, Roed & Hitchings, Inc page 1 SAFEWAY INC. - RENTON, WASH. JOB. NO. 96298 STAGE STORAGE TABLE RECTANGULAR VAULT ID No. S1 Description: UNDERGROUND DETENTION VAULT Length: 55 .00 ft . Width: 30 . 00 ft . STAGE <----STORAGE----> STAGE <----STORAGE----> STAGE <----STORAGE----> STAGE <----STORAGE----> (ft) ---cf--- --Ac-Ft- (ft) ---cf--- --Ac-Ft- (ft) ---cf--- --Ac-Ft- (ft) ---cf--- --Ac-Ft- -------------------------------------------------------------------------------------------------------- 25.43 0.0000 0.0000 26.00 940.50 0.0216 26.60 1931 0.0443 27.20 2921 0.0670 25.50 115.50 0.0027 26.10 1106 0.0254 26.70 2096 0.0481 27.30 3086 0.0708 25.60 280.50 0.0064 26.20 1271 0.0292 26.80 2261 0.0519 27.40 3250 0.0746 25.70 445.50 0.0102 26.30 1436 0.0330 26.90 2426 0.0557 25.80 610.50 0.0140 26.40 1601 0.0367 27.00 2591 0.0595 25.90 775.50 0.0178 26.50 1766 0.0405 27.10 2756 0.0633 BUSH,ROED&HITCHINGS,INC. JOB U z9 a- o z CIVIL ENGINEERS &LAND SURVEYORS SHEET NO. OF 2W9 Minor Avenue East CALCULATED BY s , DATE -71 1 3 9$ .Seattle,WA 98102 k�, II (206)323-4144 FAX(206)323-7135 CHECKED BY DATE • BRH 1-800-935-0508 SCALE �17 "i iG_ �A1Af T Ito Ut MUtE .. ....__ _ �F_(�3�k2E9 Still E ACE A = °la bl jm?.E tV.INAS-A-M FVk P90PO4_.r�-D_ VE 1+7(r,W.Af�......ShSir.,_..._ .X 43,: Sty o_ s / _ lUo7_ S� . "� NQ, r. A,¢�.� PeoV ►�-7 = 5571 X 30 _50 sf y �P.,.__. PRMV 204-1 r.0 90ft)205 11Pd" 32/5,f 7/21/98 Bush, Roed & Hitchings, Inc page 1 SAFEWAY INC. - RENTON, WASH. JOB. NO. 96298 STAGE -DISCHARGE TABLE MULTIPLE ORIFICE ID No. D1 Description: ORIFICE CONTROL STRUCTURE Outlet Elev: 25 .43 Elev: 25 .43 ft Orifice Diameter: 8 .6953 in. Elev: 26 .03 ft Orifice 2 Diameter: 6 .6563 in. Elev: 26 .33 ft Orifice 3 Diameter: 6 .7500 in. (03�4"¢ STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> STAGE <--DISCHARGE---> (ft) ---cfs-- ------- (ft) ---cfs-- ------- (ft) ---cfs-- ------- (ft) ---cfs-- ------- -------------- 25.43 0.0000 26.00 1.5491 26.60 3.7695 27.20 5.1835 25.50 0.5429 26.10 1.9976 26.70 4.0485 27.30 5.3785 25.60 0.8460 26.20 2.2962 26.80 4.3042 27.40 5.5661 25.70 1.0661 26.30 2.5385 26.90 4.5426 25.80 1.2481 26.40 3.0792 27.00 4.7671 25.90 1.4066 26.50 3.4565 27.10 4.9801 • • File Basin Hydrograph Storage Discharge Level pool Bush, Roed & Hitchings, Inc 2 3 ROUTING COMPARISON TABLE MATCH INFLOW STO DIS PEAK PEAK OUT DESCRIPTION PEAK PEAK No. No. STG OUT HYD ---------------------------------------------------------------------- 2-YR. STORM 1.45 1.82 S1 D1 25.93 1.45 7 10-YR. STORM 2.44 2.73 S1 D1 26.26 2.44 8 100-YR. STORM 3.56 3.76 S1 DI 26.53 3.56 9 Available Memory remaining: 118512 bytes Current Data Set Name: u:/WORKS/RAK\96298 i Al19 File Basin Hydrograph Storage Discharge Level pool 2 & Hitchings, Inc • Add/subt hydro lease 2 . 0 Divert flow 4 LIST OF HYDROGRAPH VALUES HYD PEAK PEAK TOTAL HYD PEAK PEAK TOTAL NO. RATE TIME VOLUME NO. RATE TIME VOLUME 1 1 . 89 480 0 . 62 11 0 . 74 470 0 .23 2 3 .07 480 1 . 00 12 1 .10 470 0 .34 3 4 .42 480 1 .43 13 1 .50 470 0 .47 4' 1 . 82 470 0 .56 14 5 2 . 73 470 0 . 85 15 6 3 . 76 470 1 . 17 16 7 1 .45 490 0 .56 17 1 .89 480 0 .78 8 2 .43 490 0 . 85 18 3 . 07 490 1 .19 9 3 .56 490 1 . 17 19 4 .42 490 1 . 64 10 20 Available Memory remaining: 99448 bytes Current Data Set Name: u:/WORKS/RAK\96298 2- YR, E )LIST146� I1, 2'yl2.so Oti,4r:Lop e 6�- PASS lo-yR. el-ISTi4(C s, a�. I2, Io- 3, IOD- R. EXISTI�1 yf? . DE�Er_o��-D �opFs of Y CI [3. lob-Yg. D EQEL-C)P D B41 LD IKIG,S 1,5 3u� ` . 1)614EtoPe-D F-YLL.upES 0. 7 +- I I oTaL 51 to - Yg , IDEVEt'oPE D P tP-E A of g + 12 (12 [ Y 00 ' R . DCVt °�� ESITE D 3,a� � c BuIt.D t r3 � lnl6VS I� D 1S BIZ C q * 1. Z-YK , PCVGLoPEp DlSG"1:GE * 8. 10-yIc • DEVeLVPCb ppo0 STo(M 17LVELoPEA DETE►. Tlonl VAUL-T . p IS(-(fit G E Iz ft'CES F^Ro M TI t D TE rLT t o rJ VkkkL-7 R,i - ENCR oF' THE TI{ KE E DES(04 5Tdf-M rN6#4TS W E9,E 5'✓T 5u TK-RT TliI✓ DiSU4At2(GE VkypIz06fAQt1-S Fae, EACH EVErJT 10/,( S , 5 9 ) WHEtJ CoMBtACT) Ws T►j TEE IzooF Ry - 'PRSS N D2o6f-APNS ( IZI S IS) 61IVE PERK 'FLOW ?-AIE-5 EQUaL, To THE EXIST1r4Gl Fww JAyDRvGkAPI+S , BUSH,ROED&HTTCHINGS,INC. JOB CIVIL.ENGINEERS&LAND SURVEYORS SHEET NO. OF 2009 Minor Avenue East Seattle,WA 98102 CALCULATED BY V`1 K'V� DATE T1 f 5 (206)323-4144 FAX(206)323-7135 CHECKED BY DATE • R 1-800-935-0508 SCALE TOTAL A&EX �LX ISTi.t f�-con4W .0.9 PE V to S �.. , . .Z.04— � t 1✓t.t�PL?__�.t'31�1 IiT lonlS IrvtPC--kViauS 4 _� PA�!E_M�rJ. 1 ;.5.�.i.�w,�.c,�c s.......3_ b9a� .. .._: ...................... ............_ .... .. .. ,.......... ..... ... t l i 00; R A P M-s DEVA.0 + of axiorJ _ ToTA E XiST. VNaut .. ...... . ... Ctr) � 7 ) ..... .. .. ..... 63) o ........ ._ ...... ..... � � EVEAITY(�/ __ Q7v1t4L EXIST G 2. .... l 7 _ .. 1n { 18� �2 ' 3_,;o�J_cfs . .... 3,0 cis ✓o�. too C1 ) C3} -4,4zcFs 4,+2cFs PRODUCT 204-1(&Nit StKm)2161(P&MI BUSH,ROED&HITCHINGS,INC. Oe 9 iv Z9 8- u Z CIVIL ENGINEERS&LAND SURVEYORS SHEET NO. OF 2009 Minor Avenue East 1 1 z-, Seattle,WA 98102 CALCULATED BY K 't DATE /Q $ (206)323-4144 FAX(206)323-7135 CHECKED BY & DATE • BRH 1-800-935-0508 SCALE h� N . ... ._...... . ..... ......... ... � .............. ..let._ :._ .... .. ... . ... �n ..... . __ . M ... :. ... . #_ N M M Yp. .........s....MN. _w.... .... .....;. p ... .W _ J' ___ . _. _ v :. Ho. ..._ _. . rn. . ..... . H . ._ . w a. ♦ w o � O ...Lt Raw W1rAp am"W1"04 BUSH,ROED&HITCHINGS,INC. Jos 4toz 9 -o Z 37/5 CIVIL ENGINEERS&LAND SURVEYORS SHEET No of 2009 Minor Avenue East CALCULATED BY �M I V- - 131 ck Seattle,WA 98102 f L DATE (206)323-4144 FAX(200)323-7135 CHECKED BY DATE • B R H 1-800-935-0508 SCALE [3 AQpjkAq OALLALATWIA E'.1>;1z'1�1.M►AhT1 ..L1.._Q. E._ _ (G,f-o h.A D WATERK 11 ATIP- _ . ....... m.. c le OF \IRULT 4 es- � ,D EP.i H .W \1.l..'['._ SUQl,.1,C KAE.A lrl.1 6 k ou 4 DWA Tir VA A T. DIM AS(M x...aP.� 4 ....ChI'Cs ...... ) -5 -3' .x 31 3'y-- I_',-(E1FTE .�.v.. - P..._... . .. . 11E1GNT dF G12�u+Jowh7Yt ' ':. .. ( Lt7 z Sto. 3 X • ...... ..... .. ....:..._ _ ..... . W fi I G l�T o F L,0 X 313 _ �oP _..jlr� 1+0 I.ID;Sfhcic[ SS 4l _Z 2 w= 1180, E cF ,c x ` RT ti 1.T s � 0 5 - 29 '7 , f5CF ............ Z_. -7 -7 (P. 3_�� 3 77LO- 3� � 'l5Q._y _ = s �c�;'445 Ib 'Coh► cre " .;.(-i;,_ COM&S15.__.VMkLT ..Vt1E1 1,n M.T .IS .!' Jtle E'7L-,__ PRODUCT 161 1(&i Qle sh.'w Z0'l P'Am V. CONVEYANCE SYSTEMS ANALYSIS AND DESIGN BUSH, ROED& HITCHINGS,INC. o, q(DZ ° � -C 2- CIVIL ENGINEERS&LAND SURVEYORS SHEET NO. ' OF 10-11 2009 Minor Avenue East Seattle,WA 98102 CALCULATEDBY p k.V1�l DATE /2.7 t(206)3234144 FAX(206)323-7135 (Z CHECKED BY (�G DATE H 1-800-935-0508 • SCALE PIPE_ SIZ44r;%.C.A 'T1Qr�S_ ._ C2tTER�A_:. .C1�� oF_.�.E►5?.Q� .5'C�..�.�R._�5.. �-:..K-.t,+1.G,_ C.o._.S.�RP'fbc,.� u�k"f.t..R. .M,h�nl�.t�t\.G__._. ._ µEY�+vp �._Rh'C to�;►�1. k io c-6 # (:o. 13)_ ....;O,lz„ � .... ;... . ....._ br ce3 S.9 (0.$d) Gl " o .39cfS --T NE C APACIT y of A %2_-1r4C.1k smWrN 80.E FIFE G) 0..57'/e 1S Z .4 r, vROOIICT Z(M�I(Single SAee6120$-I(Padded) ��®ix..GrWon,Mass.01471.is Order PHONE TOIL FREE I A00�225G3� BUSH, ROED& HITCHINGS,INC. '0' q(p 2 q8 -0 2- CIVIL ENGINEERS & LAND SURVEYORS SHEET NO. Z OF CP 2009 Minor Avenue East S rt 7 /Q Seattle,WA 98102 CALCULATED BY M K Itii DATE ppp�� (206)323-4144 FAX(206)323-7135 CHECKED BY y1 DATE G/Z 7 /q S 1-800-935-0508 SCALE d o C = a .9 _ Q =__6_,_59 i iA of A 12_- 144Gd SMoo71{_ $dg lQ+ ._� O.3-7''L _ E A = _(e,_2o-3 s F =,__e, A.cLc o.q _ 3 )L z __ Q = o l3 x3 ,Z8 a o ,43 c- '5 -THE CAPA4C1Tj 05 A t2 -1AC44 SMOOTR 4?E_TIrE 0 .370/" IS C.g# Zr CB*k3 To MIA w _ Akc lk p+ so SAG Q �AC1� 1 0.%8 + 0. 1'Z X (3 .2—k i HE Ck?AAC�Tl of A m- 1404 SMooTµ z0ze Pli°t@ O,S 7 '/e ! S S ✓ PROOUC4 204-1(S.*Sheds)2051(PadO )®®k,6rotw Mass,01471.To Order PHONE MU FREE I AOO-Mb BUSH, ROED& HITCHINGS,INC. JOB 9 62 9 8' -0 2 4 V15+ CIVIL ENGINEERS& LAND SURVEYORS SHEET NO. 3 OF !� 2009 Minor Avenue East Seattle,WA 98102 CALCULATED 8Y DATE 5/L 7 /el 5 (206)323-4144 FAX(206)323-7135 C H 1-800-93S-OS08 CHECKED BY Gam, DATE SCALE El # To CO (2= A G x l e iD- = 4•gl3cts_ THE CAPAMI OFA Sr00-H 1301Z. I k'S (Dd.5"�°/a IS _2 •.� c �s _'� AR�-� = 31,g1o2SF = 4,13 Qc. = 0 9 03 Q = 3, �scri /HE CAPAC17y Or-- 16.01k# sntcorN &W6 P/PEO or37 �s -1 . S To cR# -7 AREA = /Q, 7 3 S- SF = o,2 9 ck c C= 0.9 SAC 29_) (0.9) - o. ZL Q = EAC X-T 0. 2G-+-0.9 (o 4, o U G fs TµE cA PACrry or A l5 '/n-+c� S140OT14 So,c15 PIPE v.37°% c-Cs PRODUCT 204-,(ate sheds)205-1(P*dD tom®hc.G Mk k4w oiai.To 01&1 PHONE TOLL FREE 1-8W225-M BUSH, ROED& HITCHINGS, INC. 'o' 9(02-9 b-o 2- 4Z/5� CIVIL ENGINEERS & LAND SURVEYORS SHEET NO. OF 2009 Minor Avenue East Seattle,WA 98102 CALCULATED BY fA ��1 DATE 512.-7 118 10!� (206)3234144 FAX(206)323-713S Q�o6 S 2� �.1$ H 1-800-935-0508 CHECKED BY DATE SCALE &C£A 00 -:�F - D_, IlaLc__ _ SAG = 6. 10 C1.= �`ACKI (NE cA PACIT y _ or A _(at'//�lGf( _�/l(n v',TH. . BORE_ P!!'E .. .0,37'l• IS. Z -4 c fs �ASlrl Tp GB �9 _ .EA= 27.134 $F co SAC OA(p (2- = ,4(e �'- 3,28 4-= L'SI cSS THE cAP/q-cru o!= A l2 -1,.fcH vwoo7# P/PE 0,37'/0 # 6 zaG=(0,52-)(0 .q) = 0,47 �.0,C, Q TW t C A PA C I T OF A l 5 —I n!C ff SN1 ov TN (30 R 6 P I PE® o,37 4 c s - -Tz>154 BUSH, ROED&HITCHINGS, INC. J0,3 4(a 29 8-0 Z CIVIL ENGINEERS&LAND SURVEYORS SHEETNO. of (o 2009 Minor Avenue East Seattle,WA 98102 CALCULATED BY M"A DATE l (206)3234144 FAX(206)323-7135 CHECKED BY Q61 G DATE 5 12 7/9 6 B H 1-800-935-0508 SCALE 3As(rl io c,l3� tl __:__ C=0.°f Q = ►.2.t c fs .: _. .. ... t/ tF1LH Stytva-II 3oeE' T1P ..Q 4 3.. !. ... 'Z.... Gfs '.... _ sty -AC- TH E CAPhcIT ` oF !k ►2"_Lntc.N � �Pt Ca3. 0 3i'L- is 2.4Gf k t. FL0W. -61Fr 7JXW D.NS114 IS _6_133cfS (a) C1-* 15, THF-4 :Lt4jA& , A; .l2-InlC14 _Fv K. GSi# I U Arr►Q c3# 1-7 wc". 'uE kb Mu k-CE RROOUCT 204.1(Single Soul 205-1(PAdeA)®gyp Inc..Groron,Mass.01471.To Older PHONE TOLL FREE I-MO-225-M `tff/5} BUSH, ROED & HITCHINGS, INC. q(o Zq$- 0 ?- CIVIL ENGINEERS &LAND SURVEYORS SHEET NO. OF 2009 Minor Avenue East Seattle,WA 98102 CALCULATED BY M V141A DATE 5 /2-7/ 9 b (206)3234144 FAX(206)323-7135 0 H 1-800-935-0508 CHECKED BY e G DATE rJ�2 ? 9 0 SCALE 0A GE 1115 To c 4 ACE 14A7Z sF = D_33a c- c = o .q g3 + 0 ,3-7 (3.2-0 TLI-� GAPkc.�zl _ 0� Art L$- ttSGl1 SM04TH 54 PIP67Q f3.,37°/• lS ']_.6D cfS _f C A.C = O _ � ` 9 58cfs GAk-eem13 L^ 0 /41_ Z 1 - 1t4cR St cQoTH S3oRE PIPE p p,�1 °fie Is �D, ! c �ooF Vr-A,4s To c_6 * ZO 1AC, = LL53 0,9� _L 3S Q= A� Xr 0, = THE ChPP ATI of A (2 - IAC-P SW,oTH BORE PIPC6� Z--)ah IS (Q, 5 c;s ( o►c/J PRODUCT 204-1 ISimle SOeeIs1205-1(PA dl AW5—trs)m hc..Groton Mu 01471.To Order PFIOW TOLL FREE 1 d06225L780 -tab lab ,-- • - --t_--- --32. - � ° _.��/ VAULTSiT WATER PIPED W 1 - M' SO'WATER PIPfIj4E 1 METER _ i W \ -31 WATER PI N STORM M J 1 .`� UK0 U a \t `\ 1 OP.30.4 I TOP' .23 i 357f/ / 1 \9lv(SE 0.53 IN I ,9.94 CRAN. / \ 12 T N N 1 �29.67 \ `� 17 V•�•3�It� 0o n.le -\— > 1 IN 24.47(SE) \ 11 J RTv-¢3.a7 (SW-E)QIAII\ o. ,h Q 34 ' / ' \_� �1 _31 e 2 ------ I - i MENU SIGN -----(ter(/ ,,_`m---,T I\\ � w I,/ l� a,, � � f �1\\ •�3\ - -' it'll -z�,_:, 'I;� , ,z'w I 1 i \\, 1 11 11 " - — S�TAND-PIPE T V 1 1 ( — / A I 1 30. IN )-2LW 4- W 7r l 1 1 -25 - -- - ' m IF Mill tyl -2a.25 I AIN-LINK ( J l !/// / / �____ rT/ ., SOT. 32 I t lOP-z7.a 1 lI A �� R4V(Sw)- - r / o ! J 'T T.WA WA I C, 8'W.BRICK--- T3- .3 U RET.WALL b• �'�3 5'POWER _28 \/ / \ / ' E — \u` 4' RISERS / /5 S 5MR •, \ r' CBMN / ROA.31.38 I S NE) 24. `-- -31NOT F SE 2 r,. ✓ U E / r \ / 1. O p.51 ac 1 P P � V "s60� T =31 1 L r I V y' ACCESS MANNOEES 14i( 84 = ✓ INTO SLUDGE HOLDING iA I /, 1 1 1 D9t �. I'. TOP i s 0.F. 30.55 1 113=T INY(NW)-29.89 a'W.GONG. RET.wall "1 30.85 ` i 1 \� FENCE� SSW �S NE)••29. Il I 3 w :vNV-2.59 44-]• VI. SPECIAL REPORTS AND STUDIES A Geotechnical Engineering Report has been prepared by Earth Consultants? Inc. and is available under separate cover. • 47r� VII. BASIN AND COMMUNITY PLANNING AREAS • (N A.) • • Ml5- VIII. OTHER PERMITS • (N.A.) • • IX. EROSION/SEDIlVIENTATION CONTROL DESIGN 1. Construction entrance installment locations and detail provided. 2. Filter fabric fence installment location and detail provided. 3. V-ditch design, installment locations and detail provided. 4. Catch basin protection installment locations provided. 5. Sediment trap design, installation locations, and details provided. 6. Construction sequence provided. • • BUSH, ROED& HITCHINGS, INC. joe 61 la 2-q 8—OZ �15� CIVIL ENGINEERS& LAND SURVEYORS SHEET NO. OF 2009 Minor Avenue East _ Seattle,WA 98102 CALCULATED BY—AA444A DATE 5 -14 -c1 p (206)3234144 FAX(206)323-7135 CHECKED BY DATE • BRH 1-800-935-0508 SCALE SE�LME n1T +CfZRP SA= 2 x Q,, /0,0009 (' , ,metier e fez,=_ 1WFLoW ,RATE FvR,0E ELo E�:2.YR , 24 fi-c L_sto1LM EVEaT —TRAP' Fo(K ?"ASE.I.- n2 C;5 - FtZQV IDCD 5kAQr15cLE. AXEA AT -MAP 'Etx--VAm6,A _&F 3,5=12oo s� 5A = :2 '�.0.5� /0.a0act&; WVM14 0cECOS ;'emu I Z E D SuUrk.F,hAEA pr:I►_ZS SFe SA r- 112 5 $t2 17" 48 /. N L5, =20� �tt_c4 �1 Yt,A�tJ �'tZbFt Lt= A = 2 0 4 S /0.00 DR co 5 A = 9!S-1 t IQ 0QDE9- 'To h. :_ZoT.T0 fA wIQTH OF 7, _3'. I SIDE. SLOPESP THE M I tJ I KA k kA vJ I D'C N RT 'T PME l 2-A? E L£N k"T 1 o 4, Of Z.S 1S Z,11. 1 R E S k R =&C E A"qE-A ACT THiS Et CVA-no A 1S 'TWS-2E Fi*-C 12-00sF , WlhC-Vi F—XCEEDS T14-C ki-E A of 9 3`1. 5t t PLPtS S PROFILE QIGO A$O\Jt PRODUCT 204 1(Single Sheet)205-1(Padded)®,,Inc_Groton,Mass.01471.To Order PHONE TOLL FREE I"225-M File ►Input Hydrograph Storage Discharge LPool Proj : 96298-02 [■� Input Basin Data . Basin ID: PHASEI Phase = CoFISTRucT�al •:: Description. . :developed 2 yr/ 24 hr storm -::-- .::::::::. -:::::. .. :::. -Area-- -CN-- ---TC--- Rain Type Method. . . . . : Perv. . : 3 . 000 85 . 00 6 . 000 PTC KC24HR jvj SBT H�.� Precip Peak Fact Imperv: 0 . 000 98 . 00 6 . 000 ITC 2 . 00 484 . 0 Base Q Duration Hyd Time Int : 10 . 0 Abstract Coeff : 0 .20 0 . 00 24 . 0 . Summary Values Get Prev Ok Peak Time: 8 . 000 hr Peak Flow: 0 . 54 cfs Ne� Compute Total Vol : 8659 cf 0 . 199 acft Del Ins � Hel :: :.:;::... ....... .... . .............. .................................................:.........:............................. ----............. . ........................... p Compute the Hydrograph Summary values • -SZ/54 File ►Input Hydrograph Storage Discharge LPool Proj : 96298-02 [■] Input Basin Data Pkat a 7C Cont-hue, ion Basin ID: PHASEII Description. . :developed 2 yr/ 24 hr storm ......... ..... => --Area-- -CN-- ---TC--- Rain Type Method. . . . . Perv. . : 2 .500 85 .00 6 .000 PTC KC24HR jvj SBUH j•j Precip Peak Fact Imperv: 0 .000 98 .00 6 . 000 ITC 2 .00 484 .0 Base Q Duration Hyd Time Int : 10 .0 Abstract Coeff : 0 .20 0 .00 24 . 0 Summary Values Get Pr G� peak Flow:Peak Time: 80 .45 cfs Next Compute ute Total Vol : 7216 cf 0.166 acft Del Ins r?:NFff.?i ff.f"f.?:frf::•}:•i:??r.}:•:-i:.}T x f r :7 f%ff.?Fffff.Frfr:F????:??:?F F fr:ii!f?.'f.S{?S?.:4:•if r«?rrf::?rfifi}::r4i 4:. •ii::•}:•fi?:::r:::::rrrr.�:rr:rrr f••.ff.•:f:??f ff.-:irf.�ffrir!:1:.+..i:•Yf.•:?:f.!??rfi.?Ffi:-i'fi:•:f-ffi'i:'f:'f:i'f.•'F.r f.FI.f. .fr �ftv i-f::?i4:ii•:{ri::Li:Ci?-:✓f.��rh:::.v.-'r::ri::.•:.:•.•:... ism...S.""'- --'.'- -'.k--.--i--:F.::------:�:•i:�: -}:•;is-:}}isG:3:3:Ji:•}iii}is4:v:•::iii:•}iii:4:v:•i}:vi:•iiiiii:•iiiii:4:v}:-ii}}ii}}ii:4}:-?:•i:•i:•i wi:}:}}:w: v ::: :::::::::::::. :::..::::::::}:}:::::::::::::::}::::::::::...........�......:::::::::::::::::?.v....................... Help: Get the next record in the list • w 53/41 X. BOND QUANTITIES WORKSHEET, RETENTION/DETENTION FACILITY SUMMARY SHEET AND DELINEATION OF COVENANT (N/A) • • 5 415. XI. MAINTENANCE AND OPERATIONS MANUAtj, • As grading activities progress it is recommended that the sediment trap$ and v-ditches be maintained on a regular basis. • 0 CID SE 1 /49 0 $9 I III III I t� n SEC. E/JC/ . 18, TWP. 23N/ / RGE. 5EI , . II W. M . 0 , �- o QD zC) N88019 '28"V n U II YL _- C-_7iIr t JJII iIII iII _ I -o O o- SDCO CD 61 .83 II I BTao 222. 31 T 29.97 EE 28.61 1 `L' IE = 26.36 (12" E) a `) // / 7 / II ii IE = 26.77 12" W IE = 26.51 (8" W) -1?"em II / / � IE = 26.9f (12" S) IE = 26.36 (12" N) II / �/ Z SD MH W/ RISER II / /// / �/ R=254.6�9 O TE - 29.24 L. 2�,5 // B 2 TY I /�L= 87. 45 IE = 25.04 (12" W) DIRT ii / / _ # / z lE = 22.79 (12" SE) _ - 24 9/ TE=30.65 / 0 =19'40'27" _ o Q TOP of 12" CMP -� / �! / IE-26.55 1 Q RISER EL. 27.24 � �. / 0 15 45 11 I �11 CONNECT TO E.X. SID I / / > PIPE. VE IFY INVERT fr 11 SDCO SAF WA _ 0 ELEVAT N PRIOR TO / SS ' ANY C NSTRUCTION. II !I I II 1 0 w L.Li S T R Y i i i _�I I -� /- -R- -R- - - -I i --1 I I - / YL�II 26.00' CTR/CTR ii ii II I } II / 8" SD @ 1.0% II I II II II BLDG. F 62.45 ctr/ctr , I/ _- II II YL II �- i !, 31 I I I I I I I o<� ry 11 / � III 8 SD 0 II n 11 II J II Lo Q � 11 CRO�III ii �` i1 iiFH II L(� -�- I I � 1 � TE=2 .4�(6 SS) / II` J ; II I I 11 / WV W STORY 'i ii i� MH IE= 7.23 $',;SD) / I CB#1, TY I T ! ti� a O MET A� IN' TE = 31.36 '�� (n BRICK/ ��� L W 1, IE = 20.96 "N / TE=30.65 ' Y CB E I IE=26.81 - � BLDG ��� �� " II IE = 25.21 "5E) cn < I o° O Q / �� tl� IE = 19.06.; TR. C NNEL) \ / IEE 27' x� II (0 / �` I - 38 LF 4" RL I - a W IE=26. 7(12"N ® 2% MIN. v 1 a.In V) /%' ;� Oil ,/ ��i� I ��F.F.EL.=32.30 %-- i �d r- O;; / II I! --� o I -I - � !._IL i i a o a Q �i i L�6 TYPE I Oil CB#3,IITY I II 3� o S o i I I (r \\\ I I n �/ �' TE=30t80 TE=31.06 I _ n i �-- IE=27�142 II / / I 143 I II II IE=28.21 I I ( II II 6 �E 2 .54:: II la � �I 56.64' ctr/ntr ii SS I i II ii Ito VERIFY E IST. I t INVERT ELEVATION X n I © 7 ii J ii i��° sDco 8 SD ® 1.�% o PRIOR TO ANC ! / I L - o CONSTRU ON. i CL II �� ;� I CB 11 ii --- J a TE = 29.976 511- 11 II .� O�Ep P 6!, SS I o ' . IE = 27.47 ii 11 i is F.F.=31.95iQ•\ O O �-0 � _STORY WOOD YL x i 0 � R/ I I ( I I E-1 0 a ® , ES RESSO STAND I j s FFE=32.2 ,�- 61.71' ctr ctr �, 1 I o e- W o_w - - - - - -( 26.6 LF-4 RL I I �° - F--� \ 8 SD ® 0.5% I CB#5, TY I I MW I I ® 2% MIN. 3 TE=31100 LL a _ I Io - _ I IE=28. 8 I Iz � , # Ii f ( I !�� �\ \E / CB 4, TY I ' L ii li 1I -- a� - TE=31.05 N � IE=27.73 � II HH it �Y� i1 PL .II -�� PL II 1 I o PL / / 0 70.28 ctr ctr 8 S i1 11 ii II I> / _ _ D ® 0.5% I �C� YL - __ ` 11 / 32 EHH = II 2. _._ --------------_---------- II PL J -11i iu PL 8.61 ' Tp Y --- PL m C4 .A,..,. »,, I 11 I _ II � c� v .�V N i f I 1'- -'?�" - - '� c0 ry 'r'EnH - i I p�D Q 1 0 w --- PL -�- M Iv8��4U'S --ram=- --- - - n . C O '0 1 0 o 1 ----- ®EHH! ----- '' 1% I EHH zT i iE°---- ---- -o �D ------ ! ' 4 _ __ -- ---- __------ =-- ----------- ___--- - - _----------- - - ®EHH � 7. 60 � o � ------ --_=___ - o - - - - WVtp CB TYPE I _ ..n..,....w._,-42.; �R, -- WV TE=31.02 CB TYPE I WV IE=29. TE=31.24 , - - _ - IE=29.74 WV Cj N w n z o WATER VALVE LANE STRIP - II Of 0QZ TE = 31.49 „ ti, � . 3R-�- S R E -- N V, TOP OF PIPE ID w EL. 27.29 CB al SD - SD = o -- ----------------------- SD , TE 31 21 ---------------------s�-------------- --------- ------ I �� �hlE = -- _ l ' I ---- o \ y -- ------------- I v 0 El ED V I w SITE BENCHMARK: Tele. 0 0 o a TOP CENTER BOLT OF FIRE // VQUIt W Z o HYDRANT O N w a 0 1 _ ELEVATION=33.88 Coo N U PROPOSED PROPOSED ~� GRADE iii 32 - 32 GRADE_ 32 00o Q 010 1 1 N N N OO w c0 cD 10 0) � I (� I W Of x 0 30 - - 30 I 30 m I I GRAPHIC SCALE 28 - y 28 I 28 20 0 10 20 40 80 Q 8 ( 8" a � ( IN FEET ) 8" 1 inch = 20 ft. zo 26 26 26 OHO ° wD£C� o�V Rp ORq y/y <v �� cn Qom ' z G � N o _ LO SEAL O JM 46 v=i 24 0 - - - `n - r- - IY 24 -� - 24 ��� c/sr ° ��� 1969 o w . w • Ow w w cn o w S G Iri Q w d + w 0 w N a o `n 0 0 0 CHECKED FOR COMPLIANCE + � � 00 � � � � � � + � o � Q rn + o0 0 ocv o � `V �- TO CITY STANDARDS � o o o o _ N EXPIRES o6,,>,_ 96298. 04 N Qr7 17N r7N N MN � U M � � Nj ON 00 \ a Q II II II 11 II N II 11 Q II II II Qom+ II II Q II II Q � 11 II co w 11 _ _ _ 22 w _ II _ 22 �`�� BUSH, ROED & HITCHINGS, INC. Date N 0 n Cnv � w v � w w w w w w Date 22 _ o CIVIL ENGINEERS & LAND SURVEYORS Date LLJ STORM PROFILE (CB#1 TO CB 5) STORM PROFILE (CB#3 TO EX. CB) ��' 2009 MINOR AVE. EAST (206) 323-4144 w O --.- 9 Gj SEATTLE, Washington 1-800-935-0508 z >- z ( ) „ ( ) ' / ) ' ( ) Q�� 98102-3513 FAX# (206) 323-7135 Q 0 SCALE: i"=20' H , 1 = 2 V SCALE: "=20 H 1 = 2 V rI E-MAIL: INFO@BRHINC.COM ui u- J (Z U: \96298-04\xgrd.dwg