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<br />Battle Mountain Gold <br />NOPV Abatement Requirements <br />page 5 <br />Status: Satisfied - BMG has committed to the completion of the requested <br />investigations, the development of an apprbpriate <br />detoxification procedure, and the submission of a <br />summary report in a letter of April 16, 1952. <br />Deadline: Submit proposed modifications to ore processing methodology <br />no later than 45 days following cessation of CYTOX (treatment; <br />at the latest, 45 days after June 24, 1992. <br />(8) Modification of Tailings Area Reclamation Plan: <br />The Division is concerned that the introduction of cyanide into the <br />tailings area may be indicative of the inclusion of associated metallic <br />contaminants not originally anticipated in its approved operatigns and <br />reclamation plan. BMG's preliminary suspicions of altered metalliic ore <br />content, and the coincidental failure of the designed processing cyanide <br />recovery circuit, are additional indications of a modification in the <br />tailings chemical constituency. If the chemical constituency oIF the <br />tailings is different than the original projections, the projeclted <br />characterization of the tailings as non-toxic and chemically inert is <br />suspect. Change in the tailings constituency may render the approved <br />final reclamation plan for the tailings inappropriate. <br />In light of any information developed by BMG in the course of its <br />required investigations, analyses and redesign, including any <br />modification to its processing methodology, BMG shall modify itls tailings <br />area detoxification and reclamation plans appropriately. Appr riate <br />applications, supported by comprehensive analytical results and design <br />evaluations, shall be submitted by BMG to the Division for revi~w and <br />approval no later than 180 days following completion of the cya ide <br />detoxification of the tailings areas contents, described in item C4) <br />above. <br />Status: Satisfied - BMG has committed to the completion of thei requested <br />investigations, the submittal of a comprehlensive <br />report, and the submission of appropriate permit <br />modifications, if necessitated, in a lettelr of April <br />16, 1992. The Division originally specifiled <br />submittal within 90 days following detoxification, <br />however, BMG has demonstrated that 180 days will be <br />required to complete the requested evaluation. <br />Deadline: Submit comprehensive report and proposed modificatiions to <br />tailings area reclamation plan no later than 180 d~{ys <br />following cessation of CYTOX treatment; at the latest, 180 <br />clays after June 24, 1992. <br />