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aaeeees ainixa sac. <br />October 21, 2009 <br />CERTIFIED <br />, <br />OCT 2 !'Z'309 <br />Ms. Carla Lenkey <br />Colorado Department of Public Health and Environment Division ut I%Q,drrla5on, <br />WQCD-PE-132 mining and 5afoty <br />4300 Cherry Creek Dr. South <br />Denver, CO 80222-1530 <br />Subject: Third Quarter 2009 Colorado Wastewater Discharge Monitoring Reports <br />Permit No. CO-0032115 <br />Dear Ms. Lenkey: <br />Enclosed are Trapper Mine's Third Quarter 2009 Colorado Wastewater Discharge Monitoring Reports for the <br />period 07/1/09-09/30/09. During this quarter, four NPDES outfalls were active. Outfalls 001 and 002 <br />discharged routinely throughout the quarter. Outfalls 011 and 020 discharged during the first couple weeks of <br />the quarter. Outfalls 005, 008, 009, 012, 013, 014, 015, 016, 018, 017, 019, 021, 022, 023 and 024 did not <br />discharge during the quarter. Values reported on the enclosed DMRs represent the maximum (or minimum as <br />applicable) monthly/daily values generated at each outfall during the quarter. <br />No exceedances of primary effluent limitations occurred during this quarter. <br />Also enclosed are monthly NOAA weather summaries for the reporting period and WET test report forms as <br />applicable. Two outfalls were sampled for WET analyses during the quarter. Two species acute tests were <br />completed at outfalls 011 and 020. No exceedances of WET test limitations were observed at the tested outfalls. <br />Trapper is required to maintain sediment levels in ponds at or below 60% of the pond volume. All outfalls have <br />been properly maintained and no ponds exceeded the 60% threshold for sediment accumulation. All structures <br />operated properly and were not compromised in any way. All other operations were properly conducted <br />concerning the sediment control structures at Trapper Mine. <br />Please contact me if you have any questions regarding the enclosed information. <br />GCR [WATER/DMR/Quarterly Letter/3rd Quarter 20D91 <br />Enclosure <br />c Jason Musick, CDRMS, <br />File 109.2.7 - <br />Sincerely, <br />Z, / ZY, <br />Graham Roberts <br />EHS Specialist <br />P.O. Box 187 Craig, Colorado 81626 (970) 824-4401