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iii iuiiiiiniii iii <br />999 <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />~ <br />Deparimem of Natural Rewurces ~ <br />, <br />111 J Sherman 51., Rnom 215 II <br />I <br />Denver, Colorado ft0203 II <br />~~ <br />I <br />I'honc U03) N66 J567 <br />FAX' IAIJI H}?-N 106 <br /> DEPARTMENT Cll <br /> I~ATURAi <br />November 9, 1995 EZESOURCE~ <br /> un~~ R^^~e~ <br />Mr. Juan GaFCia '~^~~~^~~~ <br />Colowyo Coal Co L,nu•ss Lndinc.ul <br />. <br />5731 State Highway 13 r LL•C VIIIC Ui~P~IVr <br /> <br />h <br />I <br /> ~,r, <br />.u <br />I{. ~n„~ <br />Meeker. CO 81641 I Lvnum I7rrrrlnr <br />RE: Colowyo Coal Mine (C-S1-019) <br />East Taylor Pond <br />Dear Mr. Garcia, <br />The Division would like to clarify the letter dated Oculher 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 the East Taylor Pond. The Division is aware at this point in time <br />that the sediment pond is dry, and could contain the ]0-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 he stopped. The concerns raised in the October 25 letter are directed to <br />the performance of the spilhvays 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 m he resolved by both parties in order to address <br />the performance of the spilhvays, <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:\wp51 \colowyo\951109 <br />