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I <br /> f <br /> Appendix A <br /> l.ot SB Seaway Center Four <br /> ( Drainage Design Calculations <br /> ( General Site Data <br /> Area Calculations 6 <br /> Basin DeC�nidon&landuse areas 9 <br /> ( Project Site&Soils Type 11 <br /> Soil Legcnd 12 <br /> SCS Soils Water Features Table 13 <br /> I SCS Curve Number Chari 14 <br /> 2 Years?A hour Isopuvial Map of Washington 15 <br /> 25 Ycazs 24 hour Isopuvial Map of Washington 16 <br /> Time of Conccntration Data 18 <br /> I 8" Full Pipe Capacity vs. Slope Calculations 19 <br /> Existing Water Quality Pond Stagc Storage Curve' 19a <br /> Exis4ng Open Cell Pond Stage Storage Curve 19b <br /> ILot SB Se�wsy Drai�wge Data <br /> ! Drainage Basin Summary , FSTFK100, Developcd 100 yr. storm 21 <br /> Drainage Bwsin Summary , FSTFK2, Developed 2 yr. sLortn 21 <br /> Drainage B�sin Summary , ESTFKWQ,Developeci W. Q. Stortn 21 <br /> I Drainage Bnsin Summary , WSTFK100, Developed 100 yr. Storm 22 <br /> Drainage BF�sin Summary , WSfFK2,Developed 2 yr. SWrtn 22 <br /> Drainage BF�sin Summary , WSTFKWC►, Developed W. Q. Slorm 22 <br /> � Dtainage B.�sin Summary , north2 Undeveloped 2 yr. Stortn 23 <br /> Dtainage B:�sin Summa�y , south?, Undcvei.ped 2 yr. Storm 23 <br /> Summed 2 Year Hydrogtaph of East& West Fork 24 <br /> Summed 100 Ycar Hydmgatph of East 8c West Fork ?S <br /> ' 2 & 100 Year Swrtn Hydrogr<�phs for Tteatment Area 26 <br /> Stage Storagc Table Live Storage Nor1h Water Quality Pond' 28 <br /> Stage Storage Table East Sediment Trap 29 <br /> I Stage Discharge Table Combinod Orifice& <br /> Riser for Tteatment Pond( Wedand 2) 30 <br /> Level Pool Routing Summary Water Quality Storm for <br /> I Tteatment(Wetland 2) &Roof(WeUand 1) 31 <br /> CB Rim Elevations 33 <br /> I1 Stage stoiage curvc calculated from WH Pacific as-built survey data <br /> I <br /> I <br /> 98-012 Two Rivers Eagineuing <br /> I Scaway l.ot SI3 5 <br />