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STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman SC, Roam 215 <br />~ C O L O RA D O <br />Denver, Colorado 80203 pQ~~ <br />~i1 DIVISION O F <br />M I N E <br />RA L S <br />Phone: (303) 866-3567 <br />FAX: (3031832-8106 INTERNAL MEIVI~ ~ <br />GEOLOGY <br /> RECLAMATION•M IN ING <br /> SAFEi Y•SCIENCE <br />TO: Dan Mathews j <br />FROM: Jim Bum U <br />6 Feb 2004 <br />SUBJ: McClane and Munger Annual Hydrology Report for WY 2003 <br />Dan, The review is complete for the McClane/Munger AHR for WY2002. <br />Overall, the report indicates that there has been very little in the way of impact from the <br />mining activity on the groundwater or surface water resources azound the mines. <br />The minewater had lower total dissolved salt (TDS) content than East Salt Creek during <br />the 1st quarter sampling. In the 2"d quarter, the TDS value was elevated slightly <br />downstream of the McClane Canyon Mine but was still far below the baseline value for <br />East Salt Creek. <br />Bill Owens <br />Governor <br />Greg E. Watcher <br />Executive Director <br />Ronald W. Cattany <br />Division Director <br />Natural Resource Trustee <br />Groundwater analyses show that pH in the East Salt Creek alluvium upgradient of the <br />mines was lower than that below, but the electrical conductivity (indicative of TDS) was <br />lower downstream. <br />There was no indication of any impact from the mines. <br />cc: Sandy Brown <br />Office of Office of Colorado <br />Mined Land Reclamation Active and Inactive Mines Geological Survey <br />