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~ <br />~dCWI d~At~B~fDfl ~IIC 4~SF 06 <br /> , <br />. <br />erarra^^a.eor^laue>•o^a <br />awtT U^^trtr <br />tnwN SITE PREPARATION & DRAINAGE <br />STANDARD FORM REV. 1 <br />t . RUNOFF & SEDIMENT CALCULATIONS 9/80 <br /> SHT. 7 OF 12 <br />DETERMINATION OF SEDIMENT VOLUME, SETTLING VOLUME <br />AND TOTAL STORAGE VOLUME OF SEDIMENTATION PONDS <br />PROJECT ~VE~STEI2 A\ ~JELS `JESE~~O /Nr-`E~ _ J08 N0. LG-3~(o _ <br />QE 5 LEA ~ 2~_~_ __ _ POND NO. ~_Zr3___ <br />BY R/n~Y.__ DATE 2ZZ Yo _ CHECKED BY DATE .__ <br />1. SEDIMENT VOLUME <br />J+i6P ~2 Af EA~3 <br />CONTRIBUTING DRAINAGE AREA, ACRES _ ~~~ ~' ~" 15.4 = "'s.~° J <br />DISTURBED AREA IN CONTRIBUTING AREA, ACRES __2 ~.3 -F I I . 5 3~.p J <br />A. Sediment Volume = .1 acre ft. of sediment per acre of disturbed area. <br />_ .1 acre~f t./acre X 3'~, $O acre <br />_ 315 acre h. <br />l B. Sediment Volume = 3 years sediment from entire sva tc rshed ns determined by the Universal <br /> Soil Loss EUuauon IUSLE; USLE : A=RKLSCP <br /> Where'. A = Average annual soil loss in tuns.racre. <br /> R = Rainfall facmr <br /> K = Soil erodibility lactor <br /> LS = Slope length and slope g:adrent factor <br /> C = Cover factor <br /> P = Erosion control practice factor <br /> Watershed must he divided into sub areas it different Factors occur for different areas within the watersl~eel. <br />a ~, <br />SUBAREA <br />I.D. NO. SUR AREA DISCRIPTION AREA <br />Ar R K LS C p q TONS <br />A X Ar <br /> "Flzo/n 517 fa 3o.v I,~ill.~ <br /> Tlza/n sN-r ib 16.0 ~ ''I Z.4 <br /> <br />- <br />~ <br />I l ~- I <br />i <br />I <br /> i <br />- ._- <br />t <br />I --. r-- <br />~ <br /> <br />~ ------ ---- <br />I - <br />i <br />i <br />i I <br />-- <br />TOTAL AREA 4ri.(u TOTAL TON$ PER YEAR Z,Z30,1 <br />TONS/YEAR x 200016;TON x 3 YEARS <br />SEDIMENT VOLUME (ACRE FEETI= <br />(Settled Density = ~~ Ib/ft31 ~ 1bslft ~ a 635601t~! ACRE <br />3. b4 <br />10.80 SCE /1'J.4S 76, ~7 ~'j9 . <br />