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~j <br />~ec0.13acen a~avie ~itah ,inc. e-sF.as <br />swarrr~irt~ cor.~TrrucTOrr^ SITE PREPARATION & DRAINAGE REV. 1 <br />~~st urn crtr, ur~w STANDARD FORM <br />RUNOFF & SEDIMENT CALCULATIONS 9/80 <br />SHT.26 OF 12 <br />DETERMINATION Of SEDIMENT VOLUYiE, SETTLING VOLUME <br />AND TOTAL STORAGE VOLUME OF SEDIMENTATION PONDS <br />PROJECT \YESTc2tit FJBLS `CESEsC.>ru: ~ iti .,G JOB NO. UG 3lL '_ <br />2EFusE A(ZEp, a 3 POND NO. _ <br />BV O. rl~.yV. DATE `~-~ 00 CHECKED BV .__ DATE <br />2. SETTLING VOLUME IFor 24~hour detention timel <br />Settling volume = volume of runoff from IO~year, 24~hour rainfall <br />10 year, 24-hour rainfall, inches J <br />DETERPAINATION OF WEIGHTED RUNOFF CURVE NUMBER FOR CONTRIBUTING WATERSHED <br />f"r <br />'~:;~ <br /> <br />SOIL TYPE HYDROLOGIC <br /> <br />GROUP RCN <br /> <br />!AMC III <br />ACRES <br />RCN X ACRES <br />U~d,;l-~Ylx~+ <br />/AoYerso., Sle ne Cis„ 1~ 3;t- 3•S 2~a,o <br />Qe~vse - IZc~lz ~.nrr{ - ('~zre <br />~Auyers~.. ~+unr. Ci- I <br />~ <br />$(0 <br />10-5 <br />`1D3.~ <br />/~nd Are0. (~ <br />/^.~K rYion S}one Cat <br />D <br />~ ~ <br />I' ~ <br />~ ~' <br /> <br /> <br />TOTALS 1=x,0 12 ~j9,p , <br />WEIGHTED RCN, AMC II = (TOTAL RCN X ACR ESI;TOTAL ACRES '~7, <br /> <br />RUNOFF, INCHES _ D.7 I SCS~TP~149 p.5 I <br />RUNOFF, ACRE-FEET ~•bb 1 Contributing drainage area, acres X runoff, inches,'12 I <br />ADDITIONAL RUNOFF VOLUME CALCULATIONS <br />F ~. <br />k; 1 <br />FREQ. <br />24HR ST.".1 RAINFALL <br />INCHES RUNOFF <br />INCHES RUNOFF <br />AC. FT. <br />zs z.z a~i~ I.zo <br /> <br /> <br /> <br /> <br /> <br />• <br />• <br />~J <br />10-80 <br />