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III IIIIIIIIIillllll <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Dcparlmem of Natural Resources <br />131 J Sherman 51 . Room 215 <br />Denver, Colorado A0203 <br />Phnne 1303)866-J 567 <br />FAC~ p031 H.t?8106 <br />November 9, 1995 <br />Mr. Juan Garcia <br />Colowyo Coal Co. <br />5731 State Highway 13 <br />Meeker, CO 81641 <br />RE: Colowyo Coal Mine (C-81-019) <br />East Taylor Pond <br />Dear Mr. Garcia, <br />I~~~~ ti <br />DEPARTIv1EM" OF <br />NATURAL <br />RESOURCE <br />Rov Romer <br />e~~emn, <br />I. mrs 5. lochheaJ <br />Gee W ive Direaui <br />Michael P. Lonp <br />Urvisiun Dvcnor <br />The Division would like to clarify the letter dated October 25, 1995 regarding certification <br />of the East Taylor Pond. <br />The Division stated that Colowyo must address the primary and emergency spillway <br />configuration with the Division prior to any mining disturbance from which runoff would be <br />contained or directed to [he East Taylor Pond. The Division is aware at this point in time <br />[hat the sediment pond is dry, and could contain the 10-year 24-hour precipitation event. <br />We are also aware that topsoil stripping in the pit area has already occurred. This work <br />does not need to be stopped. The concerns raised in the October 25 letter are directed to <br />the performance of the spillways when there is water in the pond (permanent pool). <br />There appears to be a difference of opinion regarding the meaning of "permanent pool" in <br />the SEDCAD model. This issue needs to be resolved by both parties in order to address <br />the performance of the spillways. <br />If you have any questions, please do not hesitate to call. <br />Sin ely, <br />Erica S. Crosby <br />Environmental Protection Specialist <br />cc: Larry Routten <br />c: \wp5 ] \colowyo\951109 <br />