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<br />Battle Mountain Gold <br />NOPV Abatement Requirements <br />page 4 <br /> <br />applied by BMG may require significant modification. If BMG determines <br />it necessary to modify its ore processing methodology, BMG shall submit <br />appropriate applications to the Division. Appropriate permit <br />modifications, supported by comprehensive analytical results ar~d design <br />evaluations, shall be submitted by BMG to the Division for review and <br />approval no later than 45 days following completion of the cyaniide <br />detoxification of the tailings areas contents, described in itelm (4) <br />above. <br />Status: Satisfied - BMG has committed to the completion of they requested <br />investigations, the development of an appropriate <br />detoxification procedure, and the submission of a <br />summary report in a letter of April 16, 19192. <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 operations and <br />reclamation plan. BMG's preliminary suspicions of altered metalllic 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 of the <br />tailings is different than the original projections, the projected <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 i!ts <br />required investigations, analyses and redesign, including any <br />modification to its processing methodology, BMG shall modify its tailings <br />area detoxification and reclamation plans appropriately. Appropriate <br />applications, supported by comprehensive analytical results and design <br />evaluations, shall be submitted by BMG to the Division for review and <br />approval no later than 180 days following completion of the cyahide <br />detoxification of the tailings areas contents, described in iteM (4) <br />above. <br />Status: Satisfied - BMG has committed to the completion of the requested <br />investigations, the submittal of a comprehensive <br />report, and the submission of appropriate ~ermit <br />modifications, if necessitated, in a lette of April <br />16, 1992. The Division originally specified <br />submittal within 90 days following detoxification, <br />however, BMG has demonstrated that 180 day will be <br />required to complete the requested evaluation. <br />