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iii iiiiiiiiiiiii iii ~ <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Deparimem of Natural Resources ~I~~~ <br />1313 Sherman SL, Room 215 <br />Denvcr, Colorado N0203 <br />Phone: 13031 866 3567 <br />FAX: (1071 812 NI O6 <br />DEPARTMENT OF <br />NATURAL <br />RESOURCES <br />Roy Romer <br />January 2, 1996 cOVef"°` <br />lames s. En~nneaa <br />E>ecutlve Duecmr <br />Ms. Sally Hayes Michael B.long <br />Battle Mountain Resources, Inc. D.",t~nn Dueonr <br />P. O. Box 310 <br />San Luis, CO 81152-0310 <br />RE: SAN LUIS PROJECT -Permit No. M-88-112 - TR-15, TR-18, Stipulation No. 7 <br />Dear Ms. Hayes: <br />The Divisien concluded its review of the Proposed Monitoring and Water Quality Evaluation Plan <br />submitted by Halepaska and Associates. <br />Components of the proposal which satisfy the requirements of Stipulation No. 7 and are acceptable <br />to the Division are as follows: <br />1) Monitoring Site Selections - BMRI proposes to monitor the Rito 5eco Alluvium in <br />the existing M-11 well. The precambrian gneiss will be monitored in the existing <br />dewatering well (it will be converted when dewatering of the pit is no longer <br />required) and the Santa Fe formation will be monitored from a new well that will <br />be located a short distance hydrologically, downgradient of the West Pit, <br />approximately 300 feet southeast of the dewatering well. <br />2) Monitoring Well Construction Details -The designs shown on f~gttres 3, 4 and 5 <br />are acceptable. <br />3) Installation of Piezometers - Two standpipe piezometers will be located neaz the <br />west edge of the pit to monitor the progress of re-filling the pit and the <br />re-establishment of the hydraulic gradient. These are acceptable. <br />4) Approved Protocol for Water Quality Monitoring - BMRI committed to using <br />protocol set out in TR-06. This is acceptable. <br />5) Frequency of Monitoring - BMRI proposes to monitor the piezometers on a <br />monttily basis. This is acceptable, provided BMRI submits monthly reports to the <br />Division. <br />