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Seattle,Washington <br /> I i A , , www.pacland.com <br /> T 206322.9510 <br /> TURNING VISIONS INTO REALITY <br /> WWHM Project Report(Flow Control Calculations) <br /> Western Washington Hydrology Model <br /> PROJECT REPORT <br /> Project Name: Everett_Retail_Exp <br /> Site Address: 1605 Everett Mall Way <br /> City Everett <br /> Report Date : 8/11/2011 <br /> Gage Everett <br /> Data Start 1948/10/01 <br /> Data End 1997/09/30 <br /> Precip Scale: 1.00 <br /> WWHM3 Version: <br /> PREDEVELOPED LAND USE <br /> Name Basin 1 <br /> Bypass: No <br /> GroundWater: No <br /> Pervious Land Use Acres <br /> C, Lawn, Flat .86 <br /> Impervious Land Use Acres <br /> ROOF TOPS FLAT 1.64 <br /> PARKING FLAT 6.07 <br /> Element Flows To: <br /> Surface Interflow Groundwater <br /> round Detention Pipe, round Detention Pipe, <br /> Name round Detention Pipe <br /> Tank Name: round Detention Pipe <br /> Dimensions _ <br /> Depth: 6ft. <br /> Tank Type : Circular <br /> Diameter : 6 ft. <br /> Length : 700 ft. <br /> Discharge Structure <br /> Riser Height: 5 ft. <br /> Riser Diameter: 18 in. <br /> Orifice 1 Diameter: 4 .07 in. Elevation: 0 ft. <br /> Element Flows To: <br /> Outlet 1 Outlet 2 <br /> EverettMall Plaza Parcel IIl Retail Expansion — Stormwater Site Plan Page 44 <br />