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<br />u <br />~ ]3econ a'aeVieZ~tIIh inc. 4 SF 06 <br />~rur~~rr.cor~Truc~ors SITE PREPARATION & DRAINAGE REV. 1 <br />usr urn cn~. view STANDARD FORM <br />RUNOFF & SEDIMENT CALCULATIONS g/80 <br />SHT.~~~OF 12 <br />DETERMINATION OF SEDIMENT VOLUME, SETTLING VOLUME <br />AND TOTAL STORAGE VOLUME OF SEDIMENTATION PONDS <br />PROJECT hlFttE2J f.x_ts ~cssaJ\OO /AIr~6 JOB NO. 11G?4~ _ <br />SEDIr3gwtTST~cfJ F~r4D S04 D•Pog~sy_ POND NO. CP-1 _ <br />BY r~s,~.~r~wl DATE I-?-~1 CHECKEOBV __ DATE <br />!CJ i6cd <br />~~ <br />2. SETTLING VOLUME IFor 24~hour detention time) <br />Settling volume =volume of runoff from t0~year. 24fiour rainfall <br />10 year. 24 hour rainfall, inches 11Ea <br />DETERMINATION OF 4EIGHTED RUNOFF CURVE NUN78ER FOR CONTRISUTING'.YAT`cRSHED <br />L J <br />• <br /> <br />SOIL TYPE HYDROLOGIC <br /> <br />GROUP RCN <br /> <br />RAMC III <br />~ ACRES <br />RCN X ACRES <br />cfiE~rTSe,L -Rci-t`NrL (c..r~ac 8 ?5.82 3oc8.gFi <br /> <br />I„e¢ICl,uvcNTS-~w <br />ti;t~ <br />D <br />~, <br />4 i I <br />ZG~j <br />182.NS <br />/ <br />Rc NTSPC -I`~o+~e(2SOU) Q,J:G2oP L f <br />~ <br />~ <br />~`~ 1 I~ ?~ ~ I O(o 2. q(0 <br />1toYt¢So.J StcueY ~.-.1 t.o,. r..s ~ ~ ~ 89 ~ ~Q ~4~ 12Q6."12 <br /> I <br /> <br />TOTALS ~ <br />~ /~G~, I ~ ~ <br />55c}3,rj1 <br />WEIGHTED RCN. AMC II = (TOTAL RCN X ACRESI.TOTAL ACRES SS. ~~ <br />M TniS area o.scumes q d~~1cJ.PS or <br />.ci..~~jG UrGaG arQ PI~IO and ~o0 yr <br />~ on -1 r r ~W 6-'+B ~4TU Ca-3D <br />24 ~.r f'1Aw~• ~~S <br />S C I a eci <br />RUNOFF, INCHES IJ A. <br />RUNOFF, ACRE-FEET IJA <br />ADDITIONAL RU^JOFF VOL'J h1E CALCULA710N5 <br />I SCS~TP 749 0.5 I <br />1 Contributing drainage area, acres X runoff, nches..12 I <br />FREQ. <br />24HR STM RAINFALL <br />INCHES RUNOFF <br />INCHES RUNOFF <br />AC. FT. <br /> <br /> <br /> <br /> <br /> <br /> <br />