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Summary of Review of Annual Hydrology Report <br />Mine: Keenesburg Mine Date of review: <br />Permit No.: C- 1981 -028 DRMS reviewer: <br />Report Year: 2012 <br />Submitted by: Coors Energy Company <br />Date received <br />by Division: February 27, 2013 <br />January 23, 2014 <br />Jared Ebert <br />Requirement <br />Requirement <br />citation <br />Reviewed <br />Comment <br />A. Filing frequency <br />CDRMS <br />Page 117, 2.05.4 (2) states they will submit the report at <br />of hydrology <br />regulation <br />yes <br />the end of February each year. The report was received on <br />report <br />4.05.13(4)(c) <br />February 27, 2013. <br />End of <br />It was noted during the review of the 2012 AHR on <br />February <br />January 23rd, 2014 that the groundwater monitoring data <br />B. Timely filing of <br />(page 117 of <br />submitted with the report did not contain results from 2012 <br />hydrology report <br />permit <br />yes <br />ground water monitoring. Mr. Moline of Coors Energy- <br />application <br />Company submitted the correct data electronically the <br />C -81 -028 <br />morning of January 24th, 2014. <br />C. Filing frequency <br />of NPDES <br />Discharge <br />n/a <br />Monitoring <br />Reports <br />D. Timely filing of <br />Discharge <br />n/a <br />Monitoring <br />Reports <br />The Keenesburg Mine does not discharge surface waters <br />beyond its boundaries and, therefore, has not caused <br />E. NPDES discharge <br />n/a <br />exceedances of instream numeric standards in the South <br />limitations <br />Platte River basin. The Colorado Water Quality Control <br />Division terminated the mine's NPDES discharge permit in <br />1997 after finding that no surface discharges from the site <br />are likely. <br />F. Basic Standards <br />CWQCC <br />for Surface Water <br />regulations <br />yes <br />3.1.11 <br />G. Instream Numeric <br />CWQCC <br />Standards <br />regulation <br />yes <br />3.3.0 <br />H. Antidegradation <br />CWCC <br />Rule for Surface <br />regulations <br />yes <br />Water <br />3.1.9(2) and <br />1 1 <br />J.J.O. <br />L Sampling <br />frequency at <br />n/a <br />There have been no discharges of surface water from the <br />surface water <br />site for several years. <br />monitoring sites <br />Page 1 <br />