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July 28, 2011 <br />a go <br />Ms. Tania Watson <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 />Phone: (303) 692 -3603 <br />RE: PERMIT CO- 0027154; JUNE 2011 and SECOND QUARTER 2011 DMRS <br />Dear Tania: <br />Very truly yours, <br />Brian A. Watterson, P.G. <br />Geologist, Environmental Group <br />Twentymile Coal Company <br />Enclosures <br />cc: DRMS; CWPS Permit No. CO- 0027154 file <br />Twentymile Coal Company <br />29515 Routt County Road # 27 <br />Oak Creek, Colorado 80467 <br />(970) 879 -3800 <br />During the month of June 2011: Outfall 005A/MON5 /005W (all same site - Pond D) flowed each week of June. Outfalls 003A <br />(Pond B) and 007A/MON7/007W (all Pond F) flowed the first three weeks of June. Outfall 006A (Pond E) flowed the first two <br />weeks of June. No other Outfalls flowed in June 2011. <br />During the second quarter of 2011, all Outfalls flowed (see April and May cover letters for Outfall flow information). <br />Quarterly Whole Effluent Toxicity (WET) tests were collected for analysis for Outfall 005W and 007W during the quarter. The <br />tests indicated that the effluent was not acutely toxic to Daphnia magna survival. <br />The following certification is provided to verify that that the following the outfalls, did not discharge in the month of June 2010. <br />These included Outfalls 002A/002Q (Pond T), 004A/004Q (Pond C), and 008A (all Pond G). Please call me directly: (970) <br />870 -2750 with any questions. <br />1c <br />Brian A. Watte serr, Geologist <br />CERTIFICATION <br />I certify under penalty of law that 1 have personally examined and am familiar with the information submitted herein; and <br />based on my inquiry of those individuals responsible for obtaining the information, I believe the submitted information is <br />true, accurate, and complete. I am aware that there are significant 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 fines up to $10,000 and /,or maximum imprisonment of between 6 months and 5 years.) <br />7/20v f <br />Date <br />