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l III IIIIIIIIIIIII III <br /> f <br /> sss <br /> Remediation Plan: London Nine Portals <br /> Remediating Party: Sunnyside Gold Corporation <br /> P.O. Box 177 <br /> Silverton, CO 81433 <br /> contact William B. Goodhard <br /> Resident Manager <br /> Identification of Lands <br /> The London Mine is located in Burrows Gulch to the north of Houghton Mountain, San Juan <br /> County Colorado. See attached map. <br /> Identification of the Waters of the United States Potentially Affected <br /> Burrows Creek above the confluence with the North Fork of the Animas River. See attached <br /> map. <br /> Physical Description of Conditions <br /> There are five portals,three which appear to discharge continuously and two discharge during <br /> high runofl' two waste dumps and a shaft. Water flowing from these areas is low in pH and appears <br /> to carry dissolved metals. The dumps are exposed to rainwater and snowmelt as well. The regional <br /> geology is volcanic rocks with narrow veins containing base metals;Fe, Pb, Cu and Zn. Sampling <br /> of the waters in this area indicate that even though the portal discharges are small, there is a <br /> substantial increase in dissolved metal loading to Burrows Creek. <br /> Description of Project <br /> The waste dumps need to be isolated from portal flows as well as rainwater and snowmelt. <br /> The dumps will be regraded and hydrologic diversions installed to prevent run on conditions. The <br /> dumps would then be stabilized with basic pH material and revegetated to minimize percolation from <br /> rainwater and snowmelt. <br /> The portals will be opened and studied for the placement of hydraulic seals. In order for <br /> hydraulic seals to be placed, SGC feels that sites meeting the following conditions needs to be found. <br /> 1) Location far enough underground to avoid the near surface fractures and joints caused <br /> by weathering. <br />