2016-11-07_REVISION - M1977342 - Laserfiche WebLink

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Mr. Peter Hays, DRMS November 2016 2. The qualified registered professional engineer shall, within 20 working days after each inspection, provide to the Division a certified report verifying the impoundment has been constructed and/or maintained as designed, and in accordance with the approved plan and the applicable regulations. A copy of each certified report shall also be maintained at or near the mine site and available for review. Response: The Engineer of Record report described above will be provided to the Division as an attachment to the Annual Reclamation Report. The Engineer of Record will also verify that the impoundment has been constructed and/or maintained as designed, in accordance with approved plan and regulations A copy of each certified report shall also be maintained onsite and be available for review. 3. The annual certified inspection report for the tailings impoundment shall include discussion of, but not limited to, the following: • Any appearance of erosion, instability, structural weakness or other hazardous conditions; • Existing and required monitoring procedures and instrumentation; • The depth and elevation of any impounded waters or fluids at the time of the certified report; • Existing storage capacity of the tailings impoundment; • Any other aspects of the structure affecting stability, or requiring maintenance; • Appropriate demonstrations as necessary to verify the impoundment is compliant with applicable requirements of the Office of the State Engineer. Response The annual certified inspection report for the tailings impoundment shall include discussion of, but not limited to, the following. • Instability, structural weakness or other hazardous conditions',- Existing and required monitoring procedures and instrumentation,- Any other aspects of the structure affecting stability, or requiring maintenance,- Demonstration, as necessary, to verify impoundment is compliant with professional engineering judgment for impoundments of similar size and/or capacity. 4. The tailings impoundment shall be inspected at least monthly from spring to fall annually, by a qualified person designated by the Operator, for appearance of structural weakness, other hazardous conditions and evaluation of piezometer readings. The report generated from the monthly inspection shall be retained at the mine site and a copy of the report shall be submitted to the Division on a monthly basis. Response: The tailings impoundment shall be inspected at least monthly from spring to fall each year by a qualified person designated by the Operator, for appearance of structural weakness, other hazardous conditions and evaluation of piezometer readings. The reports generated from the monthly inspections shall be retained onsite and will be available to the Division at their request. The inspections shall continue until formal cessation of operations, following which the tailing impoundments shall be inspected annually as defined above. 5. If any inspection indicates a potential hazard exists, the Operator shall within 24 hours inform the Division of the finding and of the emergency procedures formulated for public protection and remedial action. If adequate procedures cannot be formulated or implemented, the Division shall be notified immediately. If the Operator has knowledge of a failure or imminent failure of the impoundment or embankment the Operator shall follow the emergency notification procedures of Hard Rock Rules 8.1 and 8.2. ' Climax distinguishes seasonal erosion on the surface of the tailings dam face,a normal process handled with routine operations and maintenance activities, from that which would be called a hazardous condition.