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CERTIFIED <br />Colorado Department of Public Health and Environment <br />Water Quality Control Division <br />WQCD -P -B2 <br />4300 Cherry Creek Dr. South <br />Denver, CO 80246 -1530 <br />TRAPPER MINING INC. <br />April 11, 2013 <br />Subject: First Quarter 2013 Colorado Wastewater Discharge Monitoring Reports <br />Permit No. CO- 0032115 <br />To Whom It May Concern: <br />P.O. Box 187 <br />RECEIVED <br />APR 2 4 2013 <br />Division of geSafe{Y rnatfori, <br />Mining <br />Enclosed are Trapper Mine's First Quarter 2013 Colorado Wastewater Discharge Monitoring Reports for the period <br />01/1/13 - 03/31/13. During this quarter, four NPDES outfalls were active. Outfalls 001 and 002 discharged routinely <br />throughout the quarter. Outfalls 011 and 020 discharged in response to spring snowmelt occurring in April and <br />March. Outfalls 008, 009, 017, 018, 019, 021, 022, 023 and 024 did not discharge during the quarter. Values <br />reported on the enclosed DMRs represent the maximum (or minimum as applicable) monthly /daily values generated <br />at each outfall during the quarter. <br />Trapper was recently issued a new discharge permit, effective November 1, 2012. New DMR forms were issued <br />with this renewal. Our previous forms included a space to report Total Dissolved Solids and Solids, Settleable. The <br />TDS is reportable on a quarterly basis per our permit. The TDS values are as follows for each active outfall: 001, <br />1340mg/L; 002, 2260mg /L; 011, 3300mg/L; 020 1340mg/L. If the division desires these values to be reported on <br />the DMR, please re -issue new forms with the space provided to enter this data. The Solids, Settleable numbers are <br />required as an alternate limitation in the event of an exceedence of primary effluent limitations during a precipitation <br />event. Again, SS numbers were previously reported on the old forms. If the division desires these values to be <br />present on the DMR, please re -issue as appropriate, and /or the values will be included in this cover letter with the <br />burden of proof in the event of an exceedence of primary effluent limits. <br />Also enclosed are monthly NOAA weather summaries for the reporting period. The enclosed NOAA weather <br />summary reports show the temperatures and precipitation measurements for the period mentioned. Daily <br />precipitation measurements are recorded at 7:00 a.m. as well as daily maximum and minimum temperatures from the <br />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 maintained <br />and no ponds exceeded the 60% threshold for sediment accumulation. <br />Craig, Colorado 81626 (970) 824 -4401 <br />