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kerr coal company <br />box 487 ~ Walden, Colorado 80480 ~ 13031 723-0721 <br />February 7, 1994 <br />Mr. John C. Kubic, Engineering Technician <br />Colorado Department of Health <br />Water Quality Control Division <br />Permits and Enforcement Section <br />4300 Cherry Creek Dr. S. <br />Denver, Colorado 80222-1530 <br />RE: KERR COAL COMPANY MINE WATER DISCHARGE <br />PERMIT #CO-0043567 <br />SUBJECT: PERMIT MODIFICATION REQUEST FOR CHEMICAL <br />USE FOR WATER TREATMENT PER MATERIALS SAFETY <br />DATA SHEETS (MSDS) <br />Dear Mr. Kubic: <br />By this letter, Kerr Coal Company respectfully requests <br />modification to the above referenced permit, to use a polymeric <br />flocculent for pit water (mine water) treatment. <br />I have enclosed herewith, detail specifications of the <br />1 recommended liquid coagulant, "NALCO 7888". <br />Thank you for your attention to this matter. If further <br />information is required, please call me at the above telephone <br />number, or Jerry Nettleton, TerraMatrix (ACZ) at 879-6260. <br />Sincerely, <br />1 orge V. Patterson <br />1 Mine Manager <br />GVP:tg <br />Enc. <br />cc <br />Jerry Nettleton, TerraMatrix (w/o enc.) / <br /> <br />