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<br />Battle Mountain Gold <br />NOPV Abatement Requirements <br />page 2 <br />N <br />BMG will be permitted to operate the processing plant, including the <br />introduction of unprocessed ore, until the projected tailings quality has <br />been achieved. At that point in time BMG will cease operation of the <br />plant pending approval to recommence operation by the Division. <br />Monitoring of cyanide levels within the tailings slurry and liquid shall <br />continue to verify the anticipated decay of cyanide levels following the <br />cessation of the detoxification program, until cessation is approved by <br />the Division. <br />The introduction of chemical compounds into the processing circuit to <br />affect an immediate remedy of the tailings cyanide problem could <br />potentially create additional problems by amending the chemical <br />constituency of the tailings. The Division cautions BMG that it will be <br />held responsible for any unanticipated results of its remedial actions. <br />(5) Leak Detection System Effluent Containment: <br />In the event that fluid is intercepted by the tailings impoundment liner <br />leak detection system, BMG shall design and implement an automated system <br />to minimize the development of hydraulic back pressure within tote leak <br />detection system. This system is intended to reduce the likelilhood of <br />compromising the secondary clay liner by intercepting and withdlrawing <br />leakage. <br />In the event that Cyanide is detected within the leak detection system <br />effluent, BMG shall design and implement a containment system to return <br />all effluent to the tailings impoundment, in order to prevent impact to <br />the environment. <br />(6) Cyanide Interception, Containment and Remedial Plan: <br />If the tailings area leak detection system yields more than the approved <br />4.5 gallons/minute rate of flow, and Cyanide is detected within that <br />effluent, BMG shall evaluate all ground water monitoring data to <br />determine whether any cyanide contamination has occurred. Furlther, BMG <br />shall develop and submit an interception, containment and remedial plan <br />for impacted ground water, surface water and soil. This plan shall be <br />submitted to the Division for review and approval within ten days <br />following detection of Cyanide in the leak detection system. <br />(7) Amendment of Ore Processing Methodology: <br />BMG's preliminary suspicions of altered metallic ore content, end the <br />coincidental failure of the designed processing cyanide recovery circuit, <br />are indications that the ore processing methodology currently Deing <br />applied by BMG may require significant modification. If SMG dhtermines <br />it necessary to modify its ore processing methodology, BMG shall submit <br />appropriate permit revision applications to the Division. Appropriate <br />permit amendments, supported by comprehensive analytical results and <br />