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• iii iiiiiiiiiiiuiii <br />STATE OF COLORADO <br />Roy Romer, Governor <br />Patti Shwayder, Executive Director <br />Dedicated [o protecting and improving the health and environment o((he people of Colorado <br />4300 Cherry Creek Dr. 5. <br />Denver, Colorado 80222-1530 <br />Phone (303) 692-2000 <br />August 20, 1997 <br />Laboratory and Radiation Services Division <br />8100 Lowry Blvd. <br />Denver CO 80220 6928 <br />(303) 692-3090 <br />Mr. Berhan Keffelew <br />Colorado Department of Natural Resources <br />Division of Minerals and Geology <br />1313 Sherman St.. Room 215 <br />aECEiv~~ <br />AUG 2 21997 <br />Division of Minerals a ~d~togy <br />Denver, CO 80203 <br />Re: Cresson Project, DMG Permit No. M-80-244, CDPS Permit No. CO-0043648 <br />Use of Pond N6 Water for Dust Suppression <br />Dear Mr. Keffelew; <br />pF' C020 <br />~'o~ 4 <br />Ne~ <br />~ ra ]6 ~ <br />Colorado Department <br />of Public Health <br />and Environment <br />The Water Quality Control Division has no objections to dte Division of Minerals and Geology's <br />approval of the use of Pond q6 water for the purpose of dust suppression, provided that dust <br />suppression operations are carried out such that there are no discharges to surface waters of the State. <br />However, it should be noted that the Pond !t6 water is relatively high in nitrate, which in some cases is <br />currently used, and in other cases may in the future be used as an indicator parameter for active mine <br />drainage. Therefore, while the protection of groundwater is under the authority of the DMG, we <br />recommend that dust suppression application rates be held to a minimum level, and that repeated <br />application on the same area be avoided. <br />Also, consistent with prior approvals, we would also recommend that application only be allowed only <br />on roads [hat are within the Cresson Mine pit. <br />Sincerely, <br />~~ <br />Rich Horstmann <br />Professional Engineer <br />Assessment Unit <br />Water Quality Control Division <br />xc John Hardaway, CC&V <br />Local Health Dept. <br />Gary Soldano, WQCD <br />MS-3 File for CO-0043648 -Dust Suppression <br />