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B Kenelew - DMG <br />Apnl 6, 2001 <br />Page 2 <br />installation of seven additional baseline monitoring wells in Grassy Valley. The Oflce <br />of Mined Land Reclamation approved this Technical Revision Request (Technical <br />Revision No. 38) on January 23, 2001. CC&V is providing an updated drawing titled <br />GW A/onitoring Sites. showing the locations of the additional baseline monitoring wells <br />and recent abandoned wells. One of the seven additional monitoring wells (GVMW- <br />13A) approved by Technical Revision No. 38 is planned to be abandoned and is not <br />shown on the updated drawing. Upon evaluation of the completion of well GVMW-13A, <br />it is detertnined that the casing failed during colnple[ion. Because the integrity of the <br />well is in question, the well is going [o be abandoned by removing the casing, filling the <br />drill hole with bentonite, and placing a cement cap from the bentonite seal to land <br />surface. <br />We are providing these details solely to the Office of Mined Land Reclamation as <br />previous submittals should have completed the transfer of the monitoring wells from the <br />Division of Water Resources to the Office of Mined Land Reclamation. <br />Should you have any questions about this information, please feel free to contact me at <br />the above address or by telephone at (719) 689-4041. <br />Sincerely, ~~~ ~~~~~ <br />Scott A. Lewis <br />Manager Environmental Affairs <br />Enclosures: Drawing titled: GW Monitoring Sites <br />Well Completion Data GVMW-11A-500 <br />Well Completion Data GVMW-I 1B-50 <br />Well Completion Data GVMW-12A-300 <br />Well Completion Data GVMW-12B-50 <br />Well Completion Data GVMW-13B-550 <br />Well Completion Data GVMW-13C-50 <br />Well Abandomnent Report IGMW-1 <br />Well Abandonment Report WCMW-7 <br />Well Abandonment Report WCMW-8 <br />