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January 1999 Monthly Report <br /> Page 2 <br /> ♦ Sunnyside Mine Pool Mitigation - Alkaline Solution Injection <br /> This project was not active in January 1999 . The water <br /> pool pH, at the American Tunnel bulkhead, was 4. 25 and the <br /> bulkhead pressure was 370 psi at month end. <br /> Sunnyside will continue to monitor these parameters. <br /> "B List" Projects <br /> ♦ Columbus Mine Portals -Mine Waste Dumps <br /> ♦ London Mine Portals - Waste Dumps <br /> Work, permitting or arrangement for access is not planned <br /> until it becomes evident that the work plans for these <br /> projects require implementation. <br /> ♦ Mayflower Facility - Upland Hydrological Control <br /> ♦ Tailings Pond No. 4 Surface Drainage Modification <br /> ♦ Tailings Pond No. 4 Upland Groundwater Diversion <br /> There was no activity on these projects for January 1999. <br /> It is planned to resume work on these projects in the <br /> spring of 1999. <br /> Cement Creek Diversion and Water Treatment <br /> Cement Creek diversion and water treatment was active <br /> continuously throughout January, 1999. The flow of Cement <br /> Creek throughout January was below the treatment system' s <br /> capacity and the entire flow was diverted for treatment. <br /> The flow diverted and treated in January ranged from 215 <br /> G.P.M. to 277 G.P.M. <br />