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stockpile during the completion of mining and beneficiation at the Project. The ore <br />stockpile was located adjacent to the crusher and was constructed on a foundation of <br />waste rock. Runoff from the ore stockpile will potentially include sediment derived from <br />the erosion of the waste rock foundation material. <br />Risk Assessment <br />As previously discussed, geochemical testing has indicated that the rock material <br />associated with the Project has low potential to leach constituents in sufficient quantities <br />to affect surface water quality, and generally leachable constituents are below analytical <br />detection limits. The primazy risk from the ore stockpile area comes from potential <br />sediment generation. The risk is minimal since the ore stockpile azea is located on top of <br />a prepared foundation of waste rock and is surrounded by a berm to collect and contain <br />any sediment generated during runoff events. <br />Ayplicable BMPs and Good Housekeepin¢ Practices <br />The berm around the ore stockpile represents the BMP to prevent discharges. During the <br />operating life of the facility there was no dischazge from the stockpile. The berm will be <br />inspected on a regular basis and maintained as necessazy. <br />6.7 Mill Facilities <br />Source <br />Milling of ore required the utilization of various chemical reagents in order to recover the <br />precious metals. Chemicals that were used in the milling process were susceptible to <br />spillage during transfer from the transportation container to the mill circuit. Milling took <br />place in a totally enclosed building adjacent to the tailings disposal azea. Since the <br />completion of mining and beneficiation, the use and storage of these chemical reagents <br />has been terminated. All supplies of the chemical reagents used in the milling process <br />were shipped off-site at the completion of beneficiation operations. <br />Risk Assessment <br />Inasmuch as milling occurred within an enclosed azea, the risk of reagents contaminating <br />stormwater was limited. Additionally, the mill facility drained and continues to drain to <br />Battle Mountain Resources, /nc. Telesto Solutions, /nc. <br />m~ mu am.mxnm~ mnnngemmr plnn.dac 22 May 3, 2002 <br />