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... <br />STATE, OF COLORADO <br />Roy Romer, Governor <br />rr <br />DEPARTMENT OF NATURAL RESOURCES <br />MINED LAND RECLAMATION DIVISION <br />FRED R. BANTA, Director <br />DATE: January G, 1989 ~!~ <br />T0: Candy Thompson 1.///~i <br />FROM: Michael Savagel~`7 <br />RE: Munger Canyon Piine (C-80-004) Refuse Disposal Area; Diversion Designs <br />The Munger Canyon (dine has approval to construct a coal processing waste pile <br />near their facilities area. Though approved, the construction of the pile has <br />not begun to date. <br />Designs for ditches at and around the pile are described in the permit <br />document in Sections 2.4 and 3.1.1 and Exhibits 9A, 51, and 52. Temporary <br />ditches are designed to a 2 yr, 24 hr storm event. Permanent ditches are <br />sized to a 10 yr, 24 hr storm event. Diversions are also sized to a 10 yr, <br />24 hr storm event. All these ditches need to be revised by technical revision <br />to pass the 100 year, 24 hour event. <br />If you need further information please let me know. <br />MS/es <br />2398E <br />215 Centennial Building, 1313 Sherman Street Denver, Colorado 80203-2273 Tel. (303) 866-3567 <br />