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1 Collection of Surface and Ground Water Quality Data, San Luis Gold Project, Costilla County, <br />'~ ~ Colorado", dated April 1992. <br />' SURFACE WATER CONTAINMENT AND REMEDIATION PLAN <br />' Given the tailings facility's conservative design assumptions, it is unlikely that any release from <br />the tailings facility would result in surface water flow; however, if surface flows dp occur, Battle <br />' Mountain would berm the channel to contain the flow and detoxify these captured Flows in <br />accordance with Section 9.l of the Emergency Response Plan, approved as Appendix M of <br />I'- CMLRB Permit No. M-88-112. <br />The methodology for controlling contaminants that would enter ground water during a surface <br />flow release would be similar to the ground water contaminant plan described above. Interceptor ' <br />' wells would need to create a hydraulic barrier and, thus, control all contaminated ground water, <br />r ~~` <br />which would then be pumped back to the process stream Cor detoxification. <br />' If a surface flow occurs and there is infiltration and percolation to the local ground water table, <br />unsaturated soils may be contaminated. Soil samples would be taken tb assess soil <br />~' , concentrations. Following analysis of the soil samples, appropriate action will be taken. ~ <br />~~, <br />SUMMARY <br />The following items are proposed as part of a ground water and surface water containment plan <br />to address to potential contaminant migration from the tailings area: <br />1 <br />1 <br />I <br />-3- <br /> <br />