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ACCESS ROAD CULVERT <br />A 24-inch CMP culvert functions to pass all runoff from the yard area <br />culvert and CD-1 under the access road as shown on the Drainage and <br />Sediment Control Map, (Map 20). The culvert discharges to the access road <br />collection ditch located on the north side of the access road. <br />Hydrologic inputs and results for the contributing watersheds are shown on <br />Table 11, SEDCAD+ Version 3.0, Pond 5 and Associated Structures. <br />Design Calculations <br />Peak Discharge <br />10-year, 24-hour event: 11.62 cfs <br />Required Size: 21-inch CMP <br />(from Figure 1, U.S. Bureau of Public Roads Nomograph, using <br />HW/D = 1.0) <br />• Actual Size: 24-inch LMP <br />• <br />161 R Revised - December, 1991 <br />