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RECE9~/ir~ Twentymile Coal Company JUL 3 02004 29515 Routt County Road # 27 Oak Creek, Colorado 80487 Oivisi~a of Minerals and Geelagy (970) 879-3800 July 27, 2004 Ms. Carla Lenkey Colorado Department of Public Health and Environment Water Quality Control Division -Permits and Enforcement 4300 Cherry Creek Drive South Denver, CO 80222-1530 Phone: (303)692-3603 RE: PERMIT CO.0027154: JUNE 2004/2ND QUARTER 2004 DMR SUBMITTALS Dear Ms. Lenkey 192-asp Enclosed, please find the above referenced discharge monitoring reports for the period June 1, 2004 through June 30, 2004. During this period only Ponds B (Ouffall 003A), D (Ouffall OOSA), and E (Ouffall 006A) discharged to Foidel Creek. Outfalls 003A and 005A flowed the first, fourth and fifth weeks of the period. Outfall 005A flowed only during the fourth week of the period, allowing only one sample to be collected. No permit excursions were noted for this period. Note that Ponds T (Ouffall 002), C (ouffall 004) and G (Ouffall 008) did not flow during this quarter, therefore no samples were collected from these sites for quarterly conductivity testing. Quartedy Whole Effluent Toxicity (WET) testing was conducted for Outfall OOSW in June 2004. The effluent was not acutely toxic to Daphnia magna survival. Note that Pond F (Outfall 007W) did not flow during this quarter, therefore no sample could be collected for quarterly W ET testing. Outfalls 002A (Pond T), 004A (Pond C), 007A (Pond F), and 008A (Pond G) did not discharge in June; and therefore had no chemical tests during the period. Ouffall 020A/020W has not yet been constructed, therefore sampling of this site has not occurred. Note that ponds A (Ouffall 001A/OO1W), and H (Ouffall 009A) have been deactivated following bond release, and have been removed from the newly amended permit, effective January 1, 2003. In order to reduce the amount of paper work, the following certification will be substituted for the actual DMR forms to cover the ouffalls, which did not discharge. CERTIFICATION 1 certify under penalty o/law that I have personally examined and am familiar with the in/ormation submitted herein; and based on my inquiry o/ those individuals responsible /or obtaining the information, I believe the submitted information is true, accurate, and complete. I am aware that there are significant penalties for submitting /alse 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 o/between 6 months and 5 years.) / K1. ~~ E ~~ 7 Z / C ~-- Brian A. Warierson, Geologist Date Please contact me at (970) 870-2750 with any further questions Brian A. Watterson, R.G. Geologist, Environmental Group Twentymile Coal Company enclosures cc:efr)M6yCWPS Permit No. CO-0027154 file