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08(20187 WED 14:02 FAS 000 7820090 CDPAEiWOCD ~ 002 <br />••- - • • III IIIIIIIIIIIIIIII <br />STATE OF COLORADO <br />Roy Ramer, Governor <br />PiRi Shwaydcr, fReurtive Director <br />Dedicated to pro[eaing and improving µe healµ and environment o! µe people o(Colorado <br />4300 Cherry Creek Dr. S. laboratory and Radiation Services Divlslon <br />Denver, Colorado 60222-1530 610D Lowry 81vd. <br />Phone (303)692-2000 Denver CO 60220-692a <br />(3031 692-3090 <br />August 20, 1997 <br />Mr. Berhan Keffelew <br />Colorado Department of Natural Resources <br />~, Division of Minerals and Geology <br />1313 Sherman S[., Room 215 <br />Denver, CO 80203 <br />Re: Cresson Project, DMG Permit No. M-80-244, CDPS Permit No. CO-0043648 <br />Use of Pond t/6 Water for Dust Suppression <br />op' <br />M~ <br />... .a <br />Colorado Depa~menr <br />of Public Healrb <br />and Emimnmenr <br />Dear Mr. Keffelew; <br /> <br />The Water Quality Control Division has no objec[ions to the 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 N6 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 parame[er 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 that are within the Cresson Mine pit. <br />Sincerely, <br />i~~~ <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 />s <br />