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III IIIIIIIIIIIIIIII • <br />J <br />STATE OF COLORADO <br />DIVISION OF h11NERALS AND GEOLOGY <br />Department of Nartual Resources <br />I J 13 Sherman SI ,Room ? 15 <br />Dem•er, Colorado 80?03 <br />Phone: 1}03) 866-3567 <br />FAS: (3071 83'81 U6 <br />May 14, 1999 <br />Jerry Koblitz <br />Principal <br />Greystone Development Consultants <br />5231 South Quebec Street <br />Greenwood Village, CO 8011 I <br />Mr. Koblitz: <br />DIVISION O F <br />MINERALS <br />ijt <br />GEOLOGY <br />RECLAMATION <br />MINING•SAF ETY <br />Rill ovre~s <br />Covernoi <br />Greg E. Walther <br />Eaecuove DueUOr <br />M¢hael a Long <br />Dw~~ro~ Dueao. <br />The Division of Minerals and Geology has completed review of the 1998 Annual Hydrology Report for <br />the Lorencito Canyon mine. Due to the continued delay in start-up of mining operations at the site, the <br />data recorded continues to reFlec[ baseline hydrologic conditions. The Division approved a reduction in <br />the frequency of sampling in early 1999. <br />Water levels were generally higher in 1998, likely due to abnormally wet conditions in the summer. All <br />alluvial wells except MWJC-I,.MWLC-I, and MWLC-4 show increases in water level. All bedrock wells <br />show increases except MW6-l. <br />Water quality remains unchanged and parameters continue to reflect baseline conditions. <br />In 1997, the Division noted a continued rise in water level in well MW4-U. The 1996 average water level <br />was 213 feet, the 1997 average water level was 180.7 feet, and the November 1997 water level was 158.6 <br />feet. The 1998 mean water level was 156 feet and the last reading was 155.2 feet. It appears that the <br />water level has stabilized in this well. <br />The Division has no further questions at this time. Thank you for conducting monitoring in accordance <br />with your approved plan. <br />Since ely, ~,Z~~ A'-- / <br />Kent Gorham 'G~r'_- <br />Environmental Protection Specialist <br />cc: Dan Hernandez, DIv1G <br />