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<br />SAN LUIS MINE <br />RECLAMATION EVALUATION <br />I.0 INTRODUCTION <br />This reclamation evaluation has been prepazed by Battle Mountain Resources, Ilnc. (BMRI) to <br />satisfy abatement requirements 8 and 10 of the Notice of Violation issued to IBMRI in April <br />1992. <br />Abatement 8 required BMRI to conduct investigations to determine if the chemical constituents <br />of the tailings materials is different than originally characterized. If the investigations indicate <br />that a modification to the approved reclamation plan is necessary, then dhe appropriate <br />modifications, including comprehensive analytical results and design evaluations, must be <br />submitted to the Colorado Division of Minerals and Geology (Division) for revieVv and approval. <br />Abatement 10 required BMRI to include any necessary adjustments to the financial warranty in <br />any proposed modifications to the approved reclamation plan. <br />~~ <br />BMRI has conducted an extensive evaluation of the tailings area. The evaluation included boring <br />and logging thirteen holes through the tailings material, an extensive geocl~emical testing <br />program, a column test program to evaluate water movement through the tailings, a <br />characterization of the existing pore water quality of the tailings, an evaluation of the Division's <br />August, 1992, prediction of movement of "the cyanide plume" through the tailin®s material, and <br />an updated evaluation of long-term seepage to the collection pond. The inforrr;ation collected <br />was compiled and reviewed to determine the need for modifications to the approved reclamation <br />plan for the facility. <br />BMRI began the investigations in mid-November. In order to ensure that all of the geochemical <br />reactions were accounted for in the geochemical test program, including reactions between <br />various detoxification chemicals used, the program could not be implemented ih full until the <br />INCO detoxification system was completed and tailings detoxified using the IN~0 system had <br />t <br />