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Summary of Review of Annual Hydrology Report <br />Mine: Keenesburg Mine <br />Permit No.: C-81-028 <br />Date of review: 5/21/08 <br />DRMS reviewer: Tom Kaldenbach <br />Report Year: 2006 and 2007 <br />Submitted by: Coors Energy Company <br />Date received <br />by Division: 2006 on and 2007 on 2/28/07 <br /> Require- <br /> <br />Requirement Require-ment <br />citation ment <br />complied <br />Comment <br /> with ? <br /> es / no <br />A. Filing frequency CDRMS <br />of hydrology regulation yes <br />report 4.05.13(4)(c) <br /> End of <br /> February or <br /> other agreed <br />B. Timely filing of date (Page <br />hydrology report 117 of yes <br /> permit <br /> application <br /> C-81-028 <br />C. Filing frequency <br />of NPDES <br />Discharge n/a <br />Monitoring <br />Reports <br />D. Timely filing of <br />Discharge 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 exceedances of instream numeric standards in the South <br />limitations Platte River basin. The Colorado Water Quality Control <br /> Division terminated the mine's NPDES discharge permit <br /> several years ago after finding that no surface discharges <br /> CWQCC from the site are likely. <br />F. <br />Basic Standards regulations <br />regul regul yes <br />for Surface Water 3.1.11 <br />G. Instream Numeric CWQCC <br />Standards regulation yes <br /> 3.3.0 <br />H. Antidegradation CWCC <br />Rule for Surface regulations yes <br />Water 3.1.9(2) and <br /> 3.3.0. <br />Page 1