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I <br /> I <br /> Impervious Land Use Acres <br /> ROADS FLAT 0.05 <br /> ROOF TOPS FLAT 0.13 <br /> DRIVEWAYS FLAT 0.04 <br /> SIDEWALKS FLAT 0.02 <br /> I <br /> Element Flows To: <br /> 1 Surface Interflow Groundwater <br /> Gravel Trench Bed 1, Gravel Trench Bed 1, <br /> 1 <br /> Name : Gravel Trench Bed 1 <br /> I Bottom Length: 95ft. <br /> Bottom Width : 3ft. <br /> Trench bottom slope 1: 0.05 To 1 <br /> Trench Left side slope 0: 0.75 To 1 <br /> Trench right side slope 2: 0.75 To 1 <br /> Material thickness of first layer : 2.5 <br /> Pour Space of material for first layer : 1 <br /> Material thickness of second layer : 1.5 <br /> Pour Space of material for second layer : 0.3 <br /> Material thickness of third layer : 1.5 <br /> Pour Space of material for third layer : 0.3 <br /> Infiltration On <br /> Infiltration rate : 4 <br /> Infiltration saftey factor : 0.25 <br /> Discharge Structure <br /> Riser Height: 4.5 ft. <br /> Riser Diameter: 6 in. <br /> Element Flows To: <br /> Outlet 1 Outlet 2 <br /> I <br /> Gravel Trench Bed,Hydraulic Table <br /> Stage(ft)Area(acr)Volume(acr-ft)Dschrg(cfs) Infilt(cfs) <br /> 0.000 0.007 0.000 0.000 0.000 <br /> 0.061 0.007 0.000 0.000 0.007 <br /> 111 110062 Serenity Meadows Basin 2B 2 <br /> I <br />