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TRAP EFFICIENCY MODEL - MULTI STAGE <br /> Project Location: Henderson Stormwater Lower Vd. Flow Rale: 3,097 Constants <br /> Scenario: Sediment Trap at Pond 1.2 Influent Concentration 400 Sp.Gray.Solids 2.7 <br /> Stages Used 1 g 32A7 0/sec-2 <br /> Viscosity 0.85 C.Stokes <br /> Output Summary Henderson Stormwater Lower Yd. Sediment Trap at Pond 1.2 <br /> Cell 1 <br /> Influent Concentration 400 n79A • <br /> Influent Mass Rate 14,886 lb/day <br /> Influent Solids Rate 88 cf/day S. <br /> Area 2.310 SF <br /> Effluent Concentration 169 Mg8 <br /> Effluent Mass Rate 6,281 lb/day <br /> Effluent Solids Rate 37 cl/day S. <br /> Overflow Rate 1.34 gpm/sl <br /> Trap Efficlencyl 57.81% Percent <br /> Texture Analysis of Effluent <br /> from Each Stage <br /> 100% ?4.. <br /> t>t 90°% 5x. l � rA '} r � ,wl~t it <br /> c 80/° . System Influent • <br /> y 70% to z'.- z' - - r, <br /> tNo 60% , "'' f " + 1st Stage Effluent <br /> Q. 50% ` i={ . i1 y''I+Ht 2nd Stage Effluent <br /> 40111,11111% <br /> 030°/a - .f 3rd Stage Effluent <br /> m 20% 4lh Stage Effluent <br /> 0% r. . bl.4t <br /> 1 E-05 0.0001 0.001 0.01 0.1 1 <br /> Size (mm) <br /> Figure 3a <br /> Existing System <br /> Output Summary <br />