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3.62 Drainage calculations are compiled similar to county D-2 (Attachment 2). <br /> 3.71 Plan and profile sheets are not proposed for storm or sanitary sewer. HDR <br /> proposes to provide a drainage and grading plan for the Station which shows <br /> proposed final grades, inlet grate elevations, inverts and all pipe inverts, slopes <br /> and sizes. We will also provide details for pump stations and typical inlet and <br /> manhole details. According to HDR's proposed scope of work, this was assumed <br /> to be adequate for plan approval and construction. <br /> Attachment 1: Retention Pond design calculations and IFD curves (CSWD, <br /> December 28, 1992) <br /> Attachment 2: Storm Drainage System Hydraulic Design Calculations. <br /> 07549001,012-APPE 3 September 22,1943 <br />