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Mine: Trapper Mine <br />Permit No.: C- 1981 -010 <br />Report Year: <br />Submitted by: <br />Date received by Division: <br />Review Checklist for Annual Hydrology Report <br />2012 <br />Trapper Mining, Inc. <br />March 14, 2013 <br />Date of review: <br />DRMS reviewer: <br />January 9, 2014 <br />Jared Ebert <br />Requirement <br />Regulation <br />Reviewed <br />Comment <br />A. Filing frequency <br />CDRMS <br />of hydrology <br />regulation <br />Yes <br />report <br />4.05.13(4)(c) <br />March 15 <br />according to <br />B. Timely filing of <br />Sections <br />hydrology report <br />4.8.5.1 and <br />Yes <br />4.8.5.2 <br />permit C -81- <br />010 <br />C. Filing frequency <br />of NPDES <br />NPDES <br />Discharge <br />permit CO- <br />Yes <br />Monitoring <br />0032115 <br />Reports <br />D. Timely filing of <br />NPDES <br />Discharge <br />permit CO- <br />Yes <br />Monitoring <br />0032115 <br />Reports <br />Exceedances for TSS and total iron were reported to have <br />NPDES <br />occurred during the 1st Quarter, 2012 at six outfalls. These <br />E. NPDES discharge <br />permit CO- <br />Comment <br />exceedances are a direct response to snowmelt and/or <br />limitations <br />0032115 <br />precipitation events and the alternate limitation for settleable <br />solids appears to have been met in all cases. <br />CWQCC <br />The classifications set forth in Regulation 31 were assigned <br />F. Basic Standards <br />Regulation <br />Comment <br />to specific state surface waters. See discussion on Instream <br />for Surface Water <br />31 <br />Numeric Standards (item G. below). <br />Trapper's discharges from several NPDES outfalls drain to <br />Segment 3b of the Lower Yampa River. Trapper's NPDES <br />discharge limitations are based on which of the constituents <br />CWQCC <br />in Trapper's effluent are likely to cause an exceedance of <br />G. Instream Numeric <br />Regulations <br />Comment <br />Segment 3b's instream numeric standards. Trapper's <br />Standards <br />31 and 37 <br />discharges in 2012 appeared to comply with the discharge <br />limitations set forth in the NPDES permit. Therefore, it is <br />reasonable to believe that Trapper's discharges did not <br />violate Segment 3b's instream numeric standards. <br />Page 1 <br />