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May 1997 Monthly Report <br /> Page 2 <br /> - Columbus Mine Portals - Mine Waste Dumps <br /> This is a "B List" project. Therefore, no work, permitting or <br /> arrangement for access is planned until it becomes evident <br /> that the work plan for this project requires implementation. <br /> - Surface Mill Tailings at Eureka <br /> No work was done on this project in May. Sunnyside, during <br /> site inspections, has found some minor site grading and <br /> erosion protection to be done prior to site neutralization. <br /> Site access due to high water in the Animas and South Fork of <br /> the Animas will delay completion of this work until late June <br /> or July. <br /> - Gold Prince - Mill Tailings <br /> No work was done on this project in May. This site was still <br /> inaccessible due to snow-cover at the end of May. <br /> Implementation of the amended work plan is planned for the <br /> 1997 construction season and will begin with completion of the <br /> portal bulkhead. Mobilization for this project will most <br /> likely occur in July. <br /> - Ransom Tunnel <br /> By month end, water had been captured by a coffer dam and pipe <br /> system to allow bulkhead form construction and bulkhead form <br /> construction was in progress according to the submitted <br /> design. <br /> The bulkhead will be poured in June. <br /> Longfellow - Koehler Mine Waste Project <br /> During the month of May, no on-site remediation work was done <br /> and snow still covered much of the site. Samples were taken <br /> on May 15, 1997 . Flow from the Koehler portal had increased <br /> to 97 GPM and zinc concentrations had dropped from a 250 mg/1 <br /> range to 28 mg/l. This may indicate a surface inflow that has <br /> not been found. Site down-gradient flows (LKDG-1) on May 15, <br /> 1997 were comparable to May 23, 1996 flows and metal <br /> concentrations appear to be lower. Temporary diversions, <br /> Koehler dump removal and lake sediment removal may have <br /> reduced metal loadings and concentrations. Sample results are <br /> attached. <br /> Planned activity for June at this site consists of additional <br /> site monitoring. <br />