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TRAPPER MINING INC. <br /> P.O. Box 187 Craig,Colorado 81626 (970)824-4401 <br /> July 18,2017 <br /> RSG � <br /> 2p�p1 <br /> Colorado Department of Public Health and Environment qy , <br /> Water Quality Control Division <br /> 4300 Cherry Creek Dr. South <br /> Denver,CO 80246-1530 <br /> Subject: Second Quarter 2017 Colorado Wastewater Discharge Monitoring Reports <br /> Permit No.CO-0032115 <br /> To Whom It May Concern: <br /> Enclosed are Trapper Mine's Second Quarter 2017 Colorado Wastewater Discharge Monitoring Reports for the <br /> period 04/1/17-06/30/17. During this quarter,four NPDES outfalls were active. Outfalls 001,002 and 011 <br /> discharged routinely throughout the quarter.Outfall 020 discharged in response to spring snowmelt occurring in <br /> early April. 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 /> The TDS is reportable on a quarterly basis per our permit. The TDS values are as follows for each active outfall: <br /> 001 002 011 020 <br /> 3230 mg/L 2480 mg/L 2530 mg/L 1780 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 the <br /> 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\C00032115_DMRCov_2017_02.docJ <br /> Enclosure <br /> c Robin Reilley,CDRMS <br /> File 109.2.7 <br />