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Casper Creek Townho�ses <br />1/27/93 <br />R/D ANALYSIS 8: DESIGN <br />Existing Site Conditions <br />rea Total Site Area = 11.n5 acres <br />Basin 'A": 1.30 acres <br />Basin "B": 7.20 acres <br />Basin "C": ?_.95 acres <br />Total Unr'e�relopeci Area = 3.29 acres <br />88-4555 <br />CRO <br />The undeve!uped area cr.nsist of wetlands, wetland mitigation areus and buHers. <br />(RunoN from ,he undeveloped sreas will nut enter tho proposed R/D fac�liry. HunoH irom these <br />areas will not be Irea�ed as byapss because no development will occur in theso areas and there will <br />be no increase in runo8 from these areas upon uevelopmenl. As a result thesA areas will not be <br />considerad �r� the calculatfon� because they will nu! aHect the sizing o( the R/D tacility). <br />Basin 'A": - <br />Basin "B": 2.22 acres <br />Basin "C": 1.07 acres <br />Total Existing Area = 11.45 - 3.29 = 8.16 acres <br />Basin "A": <br />8asin "B": 7.20 - 2.%2 <br />Basin "C": 2.95 - 1.07 <br />CN Value <br />Land Use: <br />= 1.30 acres <br />= 4.98 ac!es <br />= 1.88 acre� <br />Forested (per Gonditions) <br />�Soil Type °.6 Hydrologic Group CN <br />E <br />�uster Fine Sandy Loam 60 "C' 81 <br />Aidenvoxi-Urban land C�mplex <br />M`Kenna Gravelly Silty Luam 40 'D" 86 <br />CNexlsting� <br />Time ot Concentratlon <br />�o.so�ai + �o.ao�as = a;�.o <br />The existing tine of concentration travel path consists of 250' of sheet fiow @ 8.5`k <br />over forest and 700' of channel @ 1.7596. The time of concentration is computed <br />by the computer program "WaterWorks Versiun 2" to be 43.20 minutes. <br />