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1-41, <br /> <br />/!_? q e) I- lcyc) <br />TRAPP21 MINING INC. <br />April 22, 2010 <br />CERTIFIED <br /> <br />Ms. Carla Lenkey APR 27 Z010 <br />Colorado Department of Public Health and Environment <br />WQCD-PE-132 Division of Fte jamation, <br />4300 Cherry Creek Dr. South Mining and Safety <br />Denver, CO 80222-1530 <br />Subject: First Quarter 2010 Colorado Wastewater Discharge Monitoring Reports <br />Permit No. CO-0032115 <br />Dear Ms. Lenkey: <br />Enclosed are Trapper Mine's First Quarter 2010 Colorado Wastewater Discharge Monitoring Reports for the <br />period 01/1/10-03/31/10. During this quarter, five NPDES outfalls were active. Outfalls 001 and 002 <br />discharged routinely throughout the quarter. Outfalls 011, 017 and 021 discharged in response to spring <br />snowmelt occurring in March. Outfalls 005, 008, 009, 012, 013, 014, 015, 016, 018, 019, 020, 022, 023 and <br />024 did not discharge during the quarter. Values reported on the enclosed DMRs represent the maximum (or <br />minimum as applicable) monthly/daily values generated at each outfall during the quarter. <br />Also enclosed are monthly NOAA weather summaries for the reporting period and WET test report forms as <br />applicable. One outfall was sampled for WET analyses during the quarter. Two species acute tests were <br />completed at outfall 011. Outfalls 017 and 021 did not have mine water discharged. No exceedances of WET <br />test limitations were observed at any tested outfalls. <br />This winter resulted in average snow pack for the site during most of the reporting period. Snow melt was slow <br />during the period. February remained cool resulting in very little snow pack loss during the month. Continued <br />snow falls into late March kept snow on the ground until the end of the period. Warmer temps beginning in mid <br />March resulted in a slow run-off until April. The enclosed NOAA weather summary reports show the <br />temperatures and snow depth measurements for the period mentioned. Daily precipitation measurements are <br />recorded at 7:00 a.m. as well as daily maximum and minimum temperatures from the previous 24 hours. <br />No exceedences of primary effluent limitations occurred at any outfall during the quarter. Trapper is required to <br />maintain sediment levels in ponds at or below 60% of the pond volume. All outfalls have been properly <br />maintained and no ponds exceeded the 60% threshold for sediment accumulation. <br />If you have any further questions or comments concerning the enclosed information, feel free to contact me. <br />GCR [WATER\DMR Cover Letter\1' Quarter 20101 <br />Enclosure <br />C Robert Zuber, CDRMS <br />File 109.2.7 <br />Sincerely, <br />4L <br />Graham Roberts <br />EHS Specialist <br />P.O. Box 187 Craig, Colorado 81626 (970) 824-4401