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SNOWCAP COAL COMPANY, INC. <br />TABLE 13-4 <br />DRAINAGE CONTROL STRUCTURES <br />• <br />• <br />Structure Cross-Section Description <br /> Exhibit <br />Sediment Pond #6 20 Designed capacity 3.95 A.F. with at least 1 foot <br /> freeboard; embankment slopes designed at <br /> tv:1h <br />NW Collection Ditch Section 20 Design capacity 23.3 cfs <br />E-E <br />NW Collection Ditch Section 20 Design capacity 23.3 cfs <br />G-G <br />SE Collection Ditch Section 20 Design capacity 34.7 cfs <br />H-H <br />SE Collection Culvert 30" CMP <br />Bench Drains 2% rade, 5% slo to inside <br />CRDA NO. 1 EXHIBIT 96 <br />CRDA N0.2 (EXHIBIT 51) <br />Structure Cross-Section Description <br /> Exhibit <br />Sediment Pond #10 55 Designed capacity 2.60 acre-ft with at least 1 ft <br /> freeboard; embankment slopes designed at <br /> tv:2h <br />Permanent Diversion Ditches 53 Design capacity 75 cfs, gradient 0.5% <br />Section G-G <br />West Collection Ditch 53 Design capacity 27.6 ds, gradient 3 to 33% <br />Section J-J <br />East Collection Ditch Section 53 Design capacity 28.6 cfs, gradient 3 to 33% <br />J-J <br />East Collection Culvert 30" CMP <br />Bench Drains 2% rade, 5% slo a to inside <br />T13-4-3 <br />(Rev 10/05) <br />