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April Monthly Report - 2002 <br />Page 2 <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 until it becomes evident that <br />the work plans for these 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 />DMG has inspected the sites and approved the projects as complying with the work plans <br />and MLR Standards. <br />Due to the scant snowfall this past winter, these sites were clear of snow by the end of <br />April and starting to dry up due to the light winter and lack of snow melt. It is not <br />anticipated that flow quantities diverted during 2002 will approach those observed since <br />implementation of the projects due to the limited snowfall received over the 2001-2002 <br />winter. <br />Cement Creek Diversion and Water Treatment <br />Cement Creek diversion and water treatment was active throughout April. Cement Creek <br />was diverted for treatment with the remaining American Tunnel flow. Cement Creek <br />flow had increased at the beginning of the month to a level that intake control to the <br />treatment system was required. This condition lasted throughout April. <br />The Apri12002 monitoring results for; dissolved metals in the AT-004 discharge; Cement <br />Creek (CC-1B); American Tunnel flow before treatment (AT-1NFEL); and Cement <br />Creek below the AT-004 discharge point (CC-20) are attached. The reported result for <br />AT004 hardness appears to be in error. If the lab makes a correction, May's report will <br />note it. <br />