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~~~ 1111111111111 ~~~ REG ~ ._ ~ 999 ~ JA; 7 ~ ~ 2002 DirltriDn ~, ...,.„els and GeoloAY Twentymile Coal Compan 29515 Routt County Road # 27 January 25, 2002 Oak Creek, Colorado 80487 (970)879-3800 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 RE: PERMIT CO-0027154: 4th QUARTER/DECEMBER 2001 DMR SUBMITTAL Dear Ms. Lenkey: Enclosed, please find the above referenced December discharge monitoring report (DMR) for the period December 1, 2001 through December 31, 2001. During this period, only ponds A (Ouffall 001), B (Outfall 003), D (Outfall 005), and E (Outiall 006) discharged to Foidel Creek. No permit excursions were noted for the December 2001 period. Ouffalls 001 and 006 discharged each week of the period. Outfall 003 discharged during the weeks of December 3f°, and 17'". Outfall 005 discharged during the weeks of December 3`tl, 10'", and 17~" A Quarterly Whole Effluent Toxicity (WET) test was conducted the week of November 5, 2001 for Outtall 005. This test indicated that the effluent was not acutely toxic to Daphnia magna survival, therefore Outfall 005 is in compliance. Note that the preprinted DMR indicates acomposite-3 sample type, however this acute WET test only requires a single grab sample. A Quarterly Whole Effluent Toxicity (WET) test was conducted for Outfall 001. This test indicated that the effluent was not acutely toxic to Daphnia magna survival, however the sample was analyzed after the holding time had expired. In explanation, Outfall 001 discharged only during the first week in October 2001, did not discharge in November 2001, and began discharging again during December. No WET test sample could be collected during our regular sampling cycle in November, and due to an oversight, no sample was specifically collected and analyzed for a WET test in December. As a good faith effort, TCC had the laboratory conduct a WET test on an archived water sample from Outfall 001, that had been collected on December 5, 2001. Thus, the analysis was conducted after its holding time. The existing tracking system, set up to catch missed samples or lab parameters, has been modified to emphasize WET testing frequency requirements. Outfall 001 is not currently flowing due to freezing conditions. A sample will be collected for additional WET testing as soon as possible. Ouffalls 002, 004, 007, 008, and 009 did not discharge; and therefore had no chemical tests during this period. Ouffall 020 has not been constructed yet; therefore there is no discharge to enable chemical testing to date. Points 010. 016 and 017 have been eliminated from this permit. 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 of law that I have personally examined and am familiar with the information submitted herein; and based on my inquiry of those individuals responsible for obtaining the information, 1 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 Vines up to $10,000 and/or maximum imprisonment of between 6 months and 5 years.) ~i~' /~ o~ ichard Mills, Environmental anager Date Please contact me directly al (970) 870-2750 for any questions. Brian A. Watterson, Environmental Geologist, Twentymile Coal Company cc: DMG CWPS Permit No. CO-0027154 file