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2012 ANNUAL HYDROLOGY REPORT <br />Permit No. C - 82 - 056 ReCEi`V'ED <br />MAR 1 4 2013 <br />Division of Keciamation, <br />Mining and Safety <br />Submitted to: <br />Colorado Division of Minerals and Geology <br />Denver, Colorado <br />Submitted by: <br />Twentymile Coal Company <br />Oak Creek, Colorado <br />March 2012 <br />I \ ENVWONMENTAL \AHR\2009 \TCC \TEXT\Contents2011 <br />