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WWHM2 012 <br /> PROJECT REPORT <br /> Project Name: Detention Tank <br /> Site Name: Starbucks <br /> Site Address: 1010 N Broadway <br /> City Everett <br /> Report Date: 5/1/2014 <br /> Gage : Everett <br /> Data Start : 1948/10/01 <br /> Data End : 2009/09/30 <br /> Precip Scale: 1.00 <br /> Version : 2013/04/10 <br /> EXISTING LAND USE <br /> Name : EXISTING BASIN <br /> Bypass: No <br /> GroundWater: No <br /> Pervious Land Use Acres <br /> C, Pasture, Mod .08 4 L• ANDSCAPE AREAS <br /> Pervious Total 0.08 <br /> Impervious Land Use Acres <br /> DRIVEWAYS MOD 0.07 f- B• IORETENTION BOTTOM AREA <br /> PARKING MOD 0.27 (r. P• ARKING LOT AREA <br /> Impervious Total 0.34 <br /> Basin Total 0.42 <br /> Element Flows To: <br /> Surface . Interflow Groundwater <br /> Surface retention 1 Surface retention 1 <br /> Name : Bioretention 1 <br /> Bottom Length: 153.00 ft. EH TOTAL BIORETENTION BOTTOM AREA <br /> Bottom Width: 20.00 ft. 3,060 SF (153FTx20FT = 3,060 SF) <br /> Material thickness of first layer: 1 <br /> Material type for first layer: SMMWW <br /> Material thickness of second layer: 0 <br /> Material type for second layer: Sand <br /> Material thickness of third layer: 0 <br /> Material type for third layer: GRAVEL <br /> Discharge Structure <br /> Riser Height: 0.5 ft. F OVERFLOW ELEVATION <br /> Riser Diameter: 24 in. 4ARBITUTARY. OVERFLOW SET AT <br /> OVERFLOW ELEVATION <br />