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<br />~-tJ <br />~. ~LC011 S t18VtB ~Ulh ~RC. 4 S F U6 <br />~rerwe~[[~cor[r[ue*o[~ SITE PREPARATION & DRAINAGE qEV. 1 <br />[~lT lA[~ CRY. Ui~r STANDARD FORM <br />RUNOFF&SE DIMENT CALCULA TIONS 9/80 <br />SHT. 1 OF 12 <br />DETERMINATION OF SEDIMENT VOLUME, SETTLING VOLUME <br />/A~~N~D,.T,~OTAL STORAGE VOLUME OF SEDIMENTATION PONDS <br />PROJECT ~~~~ ~!~/~~~ JOB NO. (l~~ <br />~~IJ3 ARC ~9_SE~?l~~/~.~T/ ~" Tc POND N0. - <br />BV~~ DATE ___ __ ______ CHECKED BY ~ DATE <br />1. SEDIMENT VOLUME <br />SEE MAP 77 <br />CONTRIBUTING DRAINAGE AREA, ACRES _ <br />DISTURBED AREA IN CONTRIBUTING AREA, ACRES ~ ,/o.~ <br />A. ~ Sediment Volume .1 aue ft of seJ~ment per acre or d~sairbed area. <br />_ .1 acre~f t.~acre X a[re <br />g, Sediment Volume 3 years seJ~men[ Irom entire watersned as determined by the Universal <br />Soil Los, Eucabon iUSLEI USLE . A=RKLSCP <br />sCr~ <br />~, <br />~_• , <br />Where: A = 4veraye annual soJ los; in to ns. acre <br />R = Rainfall factor <br />K ° 5011 arpdibihty iact'.]r <br />LS = Slope lengm and slnoe nradent `actor <br />C = Cover fac [nr <br />P = Eroswn ..on vol practice factor <br />Watershed must be divided into sub areas a ddferent faerrs occur for d~ffarent areas v;thm the watersh+J. <br />SUBAREA <br />I D. NO. AREA! ' ~ <br />SUB AREA DISCRIPTION Ar I R K LS i C P I A 70NS <br />A X Ar <br /> ~ / -/ t ¢~//D ! i•rj ..J I .'':: i ~16 ~ //~ i ~'(~ 13'~ i~ ~Y <br /> I I ~ <br /> /4EF' ~ - - rte= ~~ Pr_'= ' , <br />~ <br /> <br />I ! <br />~ <br />~ <br /> ~ I <br /> 5EE ryi.9/° 7J <br /> ~ I i i <br />___ <br />i i <br />TOTAL AREA G 5.~~ TOTAL TONS PER YEAR I ~ 3~$~Ga <br />TONS/YEAR . 700015lfON + 3 YEARS <br />SEDIMENT VOLUMEIACREFEETI= - <br />lSettled Density = _Ib/ft31 [M/ft3 a 43560 N2/ ACRE <br />• <br />u <br /> <br />0-80 <br />