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iii iiuiiiiiiii iii <br />0 <br />,~ "h <br />April 21, 1994 <br /> <br />Mr. Joseph Dudash ~~;, ............ . ___ _ .y <br />Colorado Division of Minerals and Geologry <br />1313 Sherman, Room 215 <br />Denver, CO 80203 <br />Subject Basin Resources, New Elk Minc, C-81-013, Permit Renewal Stipulation i2 Response <br />Dear Mr. Dudash, <br />Basin is pleased to provide a revised hydrologic monitoring plan for the New Elk Mine with the attached <br />revised Tables 27 and 28 and Map 8. This plan adds four monitoring sites to evaluate water levels in the New <br />Elk workings, seven monitoring wells established in conjunction with the remedial action plan, and two alluvial <br />wells. <br />Sites NEW-1, NEW-2, NEW-3 and NEW-4 will be used to evaluate water levels at the West Portal shaft, the <br />East Portal Shaft, the' lower Apache Canyon shaft and at at new well location near the com~eyor access road. <br />Field parameters will he acquired monthly and an annual short list will be analyzed for all samples but the <br />Apache Canyon shaft. Winter access is problematic, and thus quarterly sampling has been indicated, rather <br />than monthly sampling. <br />The Corrective Action Plan associated with the remedial action work located near the Industrial Building <br />requires quarterly monitoring of two organics and water level on a quarterly basis for Colorado Department <br />of Health. The Division will be notified of the results in the Annual Hydrology Report. <br />Basin plans to establish two additional alluvial wells. PAW-8 will be located below the Refuse Disposal Area <br />and PAW-9 will be located near PRS-4 below anv disturbance associated with the facilities area. These wells <br />will provide better information on the impacts of mining along the Middle Fork of the Purgatoire River. <br />Monitoring frequency will be compatible with the monitoring of other alluvial +aells in the PAW-series at the <br />site. <br />Please contact me if you have any questions. <br />Sincerely, <br />~~~,~ ~ ~~ <br />Catherine W. Begej <br />Hydrologist <br />cc Mr. Ralph Lopez <br />Enclosures <br />5990 Greenwood Plaza Blvd. Suite 250 Englewood, CO 80111 <br />(303)850-0930 Fax(303)721-9298 <br />