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5. SITE HYDRAULIC ANALYSIS <br /> Total Area of the Site = 1.44 Acres <br /> Area included in the analysis = 1.44 Acres <br /> As per the Soil Survey of the Snohomish County Area Map,the project development area <br /> is covered with Alderwood soil,which corresponds to Type"C"soil. <br /> EXISTING SITE: <br /> Total area of the Site = 1.44 Acres <br /> Area included in the analysis = 1.44 Acres <br /> CN =81 <br /> Tc =38.20 minutes <br /> The entire existing site will be calculated as forested cover. <br /> Please refer to the Existing Basin Map for more details. <br /> DEVELOPED SITE: <br /> Total Area of the Site = 1.44 Acres <br /> Area included in the analysis = 1.44 Acres <br /> Impervious <br /> Internal road/sidewalk = 1.01 Acres <br /> Total Paved Area =43,996 SF = 1.01 Acres <br /> Building area = 0.14 Acres <br /> Frontage Improvements = - Acres <br /> Total Impervious Area = 1.15 Acres <br /> Total Pervious Area= 1.44— 1.15 = 0.29 Acres <br /> Please refer to the Developed Basin Map for more details. <br /> Please refer to the following pages for detention sizing calculations. <br /> *Rainfall <br /> 2- Year= 1.55 in. <br /> 10- Year=2.25 in. <br /> 100- Year= 3.25 in. <br />