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I• <br /> <br /> <br />SNOWCAP COAL COMPANY, INC. <br />TABLE 13-4 <br />DRAINAGE CONTROL STRUCTURES <br />CRDA NO. 3 (EXHIBIT 52) <br />Structure Cross-Section Description <br /> Exhibit <br />Sediment Pond #11 55 Designed capacity 0.67 acre-ft for CBA 2 and <br /> 4.33 acre-ft for CBA 2 and CRDA 3 with at least <br /> 1 ft freeboard; embankment slopes designed at <br /> 1 v:2h <br />Permanent Diversion Ditches 53 Design capacity 41.3 cfs, gradient 1 <br />Section H-H <br />Northwest Collection Ditch 53 Design capacity 30.4 cfs, gradient 3 to 33% <br />Section J-J <br />NW Collection Culvert 30" CMP <br />Southeast Collection Ditch 53 Design capacity 35.1 cfs, gredient 3 to 33% <br />Section JJ <br />UNIT TRAIN LOADOUT (EXHIBIT 11B) <br />Structure CrossSection Description <br /> Exhibit <br />Sediment Pond #1 plus 21 Designed capacity 2.45 acre-ft with at least 1 ft <br />Sediment Pond #2 freeboard; embankment slopes designed at <br /> 1 v:2h <br />T13-4-5 <br />(Rev 10!05) <br />