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~ ~ - , . III IIIIIIIII IIII III . <br />STATE OF <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1 313 Sherman S1 ,Room ? 15 <br />Denver, Colorado 80203 <br />Phone: (3031866-3567 <br />FAk: (303) 83'--8106 <br />May 10, 2000 <br />Mr Bill Lyle <br />Battle Mountain Resources Inc <br />PO Box 1627 <br />Battle Mountain NV 89820 <br />Re: Replacement of Performance Monitoring Well BF-2, TR-26, San Luis Proj~ct, <br />Dear Mr Lyle: <br />After receiving and reviewing the Halepaska Report regarding installation of ad <br />in, or near, the Nest Pit the Division realized that the injection wells (BF-13 and <br />located near the BF-2 well which is currently being used to track the backfill aq <br />operations in the West Pit (a performance monitoring well). Since water from tl <br />alluvial aquifer will be injected into the West Pit backfill aquifer through the ne <br />wells, and because the Rito Seco alluvial aquifer water quality around the interc <br />currently much better than the water quality in the West Pit backfill aquifer, the <br />in, or near, the BF-2 well may be significantly improved within a very short tim <br />not represent overall results of the groundwater cleanup operation within the W <br />could be very misleading when the time comes to determine whether the water I <br />West Pit is clean enough to warrant shutting down the nano-filtration facility. <br />BMRI should revise the performance monitoring commitment in TR-26 to excll <br />include BF-6 as part of the performance monitoring program outlined in the rev <br />application and to begin monitoring BF-6 in June, 2000. BF-6, and the current I <br />monitoring well (BF-4), are sufficient distances from the injection wells so they <br />immeadiately affected by the Rito Seco alluvial aquifer water. <br />Please respond to the proposed change in TR-26 rather quickly so the revision <br />as soon as all the issues have been addressed. <br />If you have any questions, please give me a call. <br />S merely, <br />~/~ . 2Q1z.Q ~J'-C~-~. <br />games Dillie <br />Environmental Protection Specialist <br />DI `/151 ON O F <br />MINERALS <br />GEOLOGI' <br />R E C L A M A T I O N <br />MINING•SAFETY <br />Bdl Ovens <br />Govemrn <br />Greg E. Walther <br />Eaecuuve Dueuor <br />~~~~chael B Long <br />Division Dueuor <br />Ivt-88- I t 2 <br />itional wells <br />8F-14) are <br />fifer cleanup <br />Rito Seco <br />~ly installed <br />ptor wells is <br />eater quality <br />which may <br />>t Pit. This <br />3ality in the <br />BF-2 and <br />not <br />be approved <br />