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<br /> <br />SHEPHERD MILLER, INC. <br />Environmental and Engineering Consultants <br />TECHNICAL MEMORANDUM <br />DATE: January 25, 2000 <br />TO: Battle Mountain Resources <br />FROM: Jim B. Finley <br />RECEIVED <br />r "~ <br />J;No~ h,Ji <br />Division of Minerals ~ ~=0109y <br />SUBJECT: Summary Report <br />INTRODUCTION <br />Battle Mountain Resources, Inc. (BMRI) has been actively managing seepage fron the West Pit <br />since October, 1998. In addition, the water management plan developed in TR-26 has been <br />implemented generally according to schedule. The water management techniques ~:mployed since <br />the submission of TR-26 to the Colorado Division of Minerals and Geology (DMG) on March 22, <br />1999 have begun the process of modifying the hydrology in the vicinity of [he Vlest Pit as was <br />projected in TR-26. As a consequence, groundwater levels, seepage flows (along the Rito Seco), <br />and surface water quality have changed. This technical memorandum provides a summary of the <br />changes that have occurred at the site since July, 1999. In addition, the water qualit~~ data that have <br />been gathered since July, 1999 aze contained in electronic format on the enclosed 3.5 inch computer <br />disks. <br />The overall changes in groundwater levels and water quality aze a result of the iml~lemen[ation of <br />the water management plan. Table 1 summarizes the timing of events at the San Luis Project since <br />March 1999, and these dates are noted on the accompanying figures that aze referenced latter in this <br />letter. None of the events listed in Table 1 alone produce the changes in the overall hydrologic and <br />geochemical system discussed in this letter, rather the sum total of the events combine to yield the <br />changes. Figure 1 shows the locations of sampling sites referenced in [his letter. <br />3801 Automation Way, Suite 100, Fort Collins, Colorado 80525 <br />Telephone (970) 223-9600 /FAX (970) 223-7171 <br />