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~O1~,13dCOR A +~RV~B ZlfAli ~RC. 4-S F ~06 <br />ewarw~iww.eowwrwuerows SITE PREPARATION & DRAINAGE REV. 1 <br />uu uw~ trtr. ur~w STANDARD FORM <br />RUNOFF & SEDIMENT CALCULATIONS 980 <br />SHT. 2 OF 12 <br />DETERMINATION OF SEDIMENT VOLUME, SETTLING VOLUME <br />AND TOTAL STORAGE VOLUME OF SEDIMENTATION PONDS <br />PROJECT \VC-``>7Etc[J FUELS GESg~'AL:o /n Jc JOB NO. L'C- 34l~_ <br />REFUSE A/' c 6 2 ~__3 _ POND NO. Q 2 3 <br />fir.- _ <br />BY ~-~-rn ~V- DATE `J _Z~~&~ _ CHECKED BV ____ DATE _ __ <br />2. SETTLING VOLUME (For 24~hour detention tirnel <br />Settling volume =volume of runoff from 10-year, 24 hour rainfall <br />10 year, 24-hour rainfall, inches <br />I.b <br />DETERMINATION OF WEIGHTED RUNOFF CURVE NUMBER FOR CONTRIBUTING WATERSHED <br />R"~ <br />,y y <br />HYDROLOGIC RCN <br />SOIL TYPE ACRES RCN X ACRES <br />GROUP (AMC III <br />TOTALS <br />WEIGHTED RCN, APAC II = ITCTAL RCN X ACRESI/TOTAL ACRES <br />RUNOFF, INCHES __ 1 SCS-TP~140 p.5 1 <br />RUNOFF, ACRE-FEET 2..3ta (Contributing drainage area, acres X runoff, ~nchesil2 1 <br />ADDITIONAL RUNOFF VOLUME CALCULATIONS <br />!mot <br />.'[' <br />FREQ. <br />24HR STM RAINFALL <br />INCHES RUNOFF <br />INCHES RUNOFF <br />AC. FT. <br />25 2.2 3, 50 ~ <br /> <br /> <br /> <br /> <br /> <br />rG «~oin SNT Za. ~ ZEi <br />• <br />• <br /> <br />