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Battle Mountain Gold 1122192 Additional Corrective Action Order Status of Tailings Pond Detoxification Process (Permit No: M-88-112) Updated as of August 25, 1992 In consideration of Battle Mountain Resources' progress in satisfying abatement requirement (4) imposed upon the Notice of Violation issue to Battle Mountain Gold (BMG) on March 31, 1992, the Mined Land Reclamation Board imposed the following additional corrective action on July 22, 1992, as allowed in Paragraph 18 of the May 28, 1992 Board Order. (1) Maintain the WRD cyanide level below 15 ppm in the active tailings pond, and below 10 ppm in the inactive tailings pond. ~, BMRI has demonstrated that the Hydrogen Peroxide tailings treat ent process is capable of reducing the WAD cyanide level to 15 ppm r less in in an active tailings pond, and 10 ppm or less in an inactive t flings pond. BMRI shall continue to add hydrogen peroxide directly to both tailings ponds' liquid pools, at appropriate rates, in order to achieve and maintain these levels. If the WAD cyanide levels exceed th se limits then BMRI must take corrective action. WAD cyanide levels in the active tailings pond have remained below 15 ppm since July 9th. WAD cyanide levels in the inactive tailings po d have remained below 10 ppm since July 9th. I BMRI shall implement the INCO Process as soon as possible, and ring the tailings ponds into compliance as soon as possible thereafter. BMRI shall commence operation of the INCO S02/Air Tailings Trea ment Process as soon after approval as possible, in accordance with he schedule for implementation contained in TR-010. When BMRI com ences operation of the INCO process it shall bring both tailings pond into compliance with the permit standards as soon as possible. TR-010 was approved by the Division on July 31, 1992. BMRI pro ects completion of construction by late-September, and the completion of testing and calibration of the INCO reactor by mid-October, 199 . JP/7P Doc No: 4169E