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P.O. Box 187 <br />April 16, 2019 <br />tRaeess MiniNa wc. <br />Craig, Colorado 81626 <br />RECEIVED <br />Colorado Department of Public Health and Environment MAY 0 7 2019 <br />Water Quality Control Division <br />WQCD-P-B2 <br />4300 Cherry Creek Dr. South DIVISION OF RECLAMATION <br />Denver, CO 80246-1530 MINING AND SAFETY <br />Subject: First Quarter 2019 Colorado Wastewater Discharge Monitoring Reports <br />Permit No. CO -0032115 <br />To Whom It May Concern: <br />(970)824-4401 <br />Enclosed are Trapper Mine's First Quarter 2019 Colorado Wastewater Discharge Monitoring Reports for the <br />period 01/1/19-03/31/19. During this quarter, three NPDES outfalls were active. Outfalls 001, 002 and 011 <br />discharged routinely throughout the quarter. Outfalls 008, 009, 017, 018, 019, 020, 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 />The TDS is reportable on a quarterly basis per our permit. The TDS values are as follows for each active outfall: <br />001 <br />002 <br />011 <br />3590 mg/L <br />2290 mg/L <br />3430 mg/L <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 <br />the previous 24 hours. <br />No exceedences of primary effluent limitations occurred at any outfall during the quarter. <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. <br />If you have any further questions or comments concerning the enclosed information, feel free to contact me. <br />Sincerely, <br />ELECTRONICALLY SUBMITTED AND SIGNED THROUGH NetDMR <br />Graham Roberts <br />Environmental Engineer <br />GCR [WATER\DMR Cover Letter\NetDMR Cover Letters\CO0032115_DMRCov_2019_Ol.docl <br />Enclosure <br />c . Robin Reid", CDRMS <br />File 109.2.7 <br />