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APPENDIX 4-A <br /> Basin A Sizing Calculations <br /> WWHM2012 <br /> PROJECT REPORT <br /> Project Name: 13-144 Silver Lake Basin A - 20140703 <br /> Site Name: Silver Lake Basin A <br /> Site Address: 110th St SE & SR 527 <br /> City : Everett, WA <br /> Report Date: 7/10/2014 <br /> Gage : Everett <br /> Data Start : 1948/10/01 <br /> Data End : 2009/09/30 <br /> Precip Scale: 1.00 <br /> Version : 2014/07/02 <br /> Low Flow Threshold for POC 1 : 50 Percent of the 2 Year <br /> High Flow Threshold for POC 1: 50 year <br /> PREDEVELOPED LAND USE <br /> Name : Basin 1 <br /> Bypass: No <br /> GroundWater: No <br /> Pervious Land Use Acres <br /> C, Forest, Flat 1.83 <br /> Pervious Total 1.83 <br /> Impervious Land Use Acres <br /> Impervious Total 0 <br /> Basin Total 1.83 <br /> Element Flows To: <br /> Surface Interflow Groundwater <br /> MITIGATED LAND USE <br /> Name : Basin 1 <br /> Bypass: No <br /> July 2014 4-4 LDC Job No. 13-144 <br />