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III IIIIIIIIIIIII III <br />999 <br />000 <br />Twentymile Coal Company <br />29515 Routt County Road R 27 <br />Oak Creek, Colorado 80487 <br />(970)879-3800 <br />October 27. 2000 <br />Ms. Carla Lenkey <br />Colorado Department of Public Health and Environment <br />Water Quality Control Division -Permits and Enforcement <br />4300 Cherry Creek Drive South <br />Denver, CO 80222-1530 <br />RE: PERMIT CO-0027154: SEPTEMBER 2000 DMR SUBMITTAL <br />Dear Ms. Lenkey: <br />RECEIVED <br />OCT 31 2000 <br />Division of Minerals & Geology <br />Please find enclosed the above referenced discharge monitoring repoA for the period September 1, 2000 through September <br />30, 2000. Ponds A (Ouffall 001), B (Outfall 003), D (Ouffall 005), and E (Outfall 006) discharged during this period. No permit <br />limitation exceedences occurred during this quader. <br />Quarterly Whole Effluent Toxicity (WET) tests were conducted in July for Ouffall 001 and 005, indicating no toxicity to P. <br />Promelas or C. Dubia. The "Concentration with Statistically Significant Difference in Lethality" was >700% for both species at <br />each Outfall. Copies of the CDPS W ET Test Report Forms for both species are included with this submittal. <br />Outialls 001, 005 and 007 are being tested for Hardness in addition to the required parameters, however, as noted below, 007 <br />did not discharge and was omitted for this period. A copy of those results is included in this submittal. <br />Outfalls 002, 004, 007, 008 and 009 did not discharge; and therefore have no chemical or toxicological tests during this period. <br />Outfall 020 has not been constructed yet; therefore there is no discharge to enable chemical or toxicological testing to date. <br />Outfalls 010, 016 and 017 have been eliminated from this permit. In order to reduce the amount of paper work, the Tollowing <br />certification will be substituted for the actual DMR forms to cover the outfalls which did not discharge. <br />I certify under penalty of law that I have personally examined and am /amiliar with the in/ormation submitted herein; ana <br />based on my inquiry of those individuals responsible for obtaining the information, 1 believe the submitted in/ormation is <br />true, accurate, and complete. 1 am aware that there are signi/icant penalties for submitting false information, including the <br />possibility of fine and imprisonment. See 18 U.S.C. § 1001 and 33 U.S.C. § 1319. (Penalties under these statutes may <br />include lines up to $10,000 and/or maximum imprisonment of between 6 months and 5 years.) <br />Richard Mills, Environmental Manager Date <br />Please contact me at (970) 870-2750 for any fuAher questions or additional information. <br />Twen~jtym~ile~COal Company , <br />Stephen L. Miller P.E. <br />Sr. Mining Engineer <br />enclosures <br />cc: DMG <br />CWPS Permit No. CO-0027154 file <br />