2008-05-02_HYDROLOGY - C1981044 (2)

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eJ 4 6 -0 RECEIVED MAY 0 2 2008 Division of ReclamatiOn, Mining and Safety April 28, 2008 Ms. Tania Watson Colorado Department of Public Health and Environment Water Quality Control Division - Permits and Enforcement 4300 Cherry Creek Drive South Denver, CO 80222-1530 BTU Empire Corporation 29515 Routt County Road # 27 Oak Creek, Colorado 80467 (970) 879-3800 RE: PERMIT CO-0034142; BTU EMPIRE 1sT QUARTER 2008 DMR SUBMITTAL Dear Ms. Watson: Enclosed, please find the above referenced discharge monitoring report for the period January 1, 2008 through March 31, 2008. Outfall 003A/003X did not flow during the month of February due to a faulty transformer that had to be replaced. 003A/003X did flow each week of the remaining period. Outfall 022A/022X flowed the first two weeks in January, and did not resume flow again until the final week of February. Outfall 024A/024X did not flow during the period. Two permit exceedances were noted for 003A, which included TSS and iron. This may have been the result of the mine pump (003A water source) being temporarily down, allowing additional resonance time for water in contact with marine shale. Note that values for TSS values at the end of March dropped to 18 mg/L. Similarly, the iron concentration at the end of March dropped to 0.33 mg/L. In 2004, BTU Empire received approval from CDPHE to reduce the frequency of Whole Effluent Toxicity (WET) testing for Outfalls 003X, 022X, and 024X to an annual basis (a change from the previous quarterly basis). Annual chronic WET testing will be performed during April of 2008 Outfalls, 004A, 007A, 009A, 011 A, 012A, 013A, 014A, 015A, 016A, 017A, 018A, 019A, 020A, 021 A, 023A, and 024A/024X, along with Site 3001, did not discharge during this period. In order to reduce the amount of paper work, the following certification will be substituted for the actual DMR forms to cover the outfalls, which did not discharge. I CERTIFICATION l certify under penalty of law that 1 have personally examined and am familiar with the information submitted herein; and based on my inquiry of those individuals responsible for obtaining the information, I believe the submitted information is true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment. See 18 U.S.C. § 1001 and 33 U.S.C. § 1319. (Penalties under these statutes may include fines up to $10,000 and/or maximum imprisonment of between 6 months and 5 years.) Brian A. Watterson, Geologist Date Please contact me directly at (970) 870-2750 with any questions. Brian A. Watterson, P.G. Geologist, Environmental Group BTU Empire Corporation enclosures cc: DMG CWPS Permit No. CO-0034142 file