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January 1997 Monthly Report <br /> Page 3 <br /> London Mine Portals - 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 /> Pride of the West Tailings <br /> Status of this site has not changed from the December monthly <br /> report. <br /> - Sunnyside Mine Pool Mitigation - Alkaline Solution Injection <br /> During the month of January, this project was inactive with no <br /> alkaline material or water being injected. <br /> The water pool pH at the American Tunnel bulkhead on January <br /> 29, 1997 was 5. 1 and the bulkhead pressure was 239 psi . <br /> Sunnyside will continue to monitor these parameters through <br /> the winter. <br /> - Cement Creek Diversion and Water Treatment <br /> Cement Creek diversion and water treatment was active <br /> continuously through January. The entire flow of Cement Creek <br /> was diverted and treated along with the portal flow from the <br /> American Tunnel. <br /> Attached are results from flow and quality monitoring of; <br /> Cement Creek diverted for treatment (CC-1B) ; American Tunnel <br /> flow before treatment (AT-INFEL) ; dissolved metals analysis of <br /> the AT-004 discharge; and Cement Creek below the AT-004 <br /> discharge point (CC-20) . <br /> As explained in the December report, there was approximately <br /> 20 GPM more flow at CC-20 than being discharged from the AT- <br /> 004 discharge point. This water is made up of excess reagent <br /> mix water being diverted for the water treatment system from <br /> Minnehaha Creek and seeps and springs entering the creek bed <br /> between the diversion point and the CC-20 monitoring point. <br />