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Dutch Bros. Coffee Stormwater Site Plan Everett, Washington <br /> Detention Cell <br /> Descrip: Detention Pond Increment [0.10 ft <br /> Start El. 87.00 ft Max El. 88.50 ft <br /> Void Ratio 100.00 <br /> Length 20.00 ft Width 7.00 ft <br /> Length ssl 3.00v:lh Length ss2 3.00v:1h <br /> Width ss1 3.00v:1h Width ss2 3.00v:lh <br /> Consider wetted surface for infiltration <br /> Trap Type Node <br /> Combination Discharge Structure <br /> Descrip: Orifice, Rectangular Weir and Infiltration Increment 0.10 ft <br /> Start El. ( 87.00 ft Max El. 88.50 ft <br /> List of Controls Bottom Orifice <br /> Rectangular Weir <br /> Bottom Orifice <br /> Descrip: Orifice outlet Increment 0.10 ft <br /> Start El. 87.00 ft Max El. 88.50 ft <br /> Orif Coeff 0.62 Lowest Orif El. 87.00 ft <br /> Lowest Diam 1.15 in Dist to next 0.00 ft <br /> Rectangular Weir <br /> Descrip: Overflow Increment 0.10 ft <br /> Start El. 88.00 ft r Max El. 88.50 ft <br /> Length 0.25 ft Orif Cd I 0.61 <br /> Cd 3.06 Use Wright/Baldwin Equation <br /> Flow Control System Performance <br /> Start of live storage:86.5 ft <br /> Event Match Q (cfs) Peak Q(cfs) Max El (ft) Vol (cf) Vol (acft) Time to Empty (hr) <br /> 2 yr 24 hr 0.0263 0.026 87.5146 95.2589 0.0022 0.0059 <br /> 10 year 0.0623 0.0349 87.9245 208.3442 0.0048 0.0059 <br /> 100 year 0.1223 I 0.1222 I 88.1834 1299.18311 0.0069 I 0.3959 <br /> nnr-i nnin n �c <br />