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TR -18 to Permit M- 1977 -342 <br />Environmental Protection Plan <br />Mill - At the Mill site, process waters, including seep water from the tailings storage facility, are <br />impounded and recycled. Should Mill operations temporarily cease, tailings seep water would <br />continue to be pumped back to the process circuit and the East Branch Reservoir. There would <br />be no discharge through permitted outfalls from the tailings storage facility during periods of <br />temporary cessation except for potential emergency situations as allowed pursuant to the CDPS <br />permit. <br />Handling of the acid - forming tailings material during temporary cessation would be the same as <br />under active operations. Seep water would be pumped back to the process circuit as discussed, <br />the water pool would be maintained, and wind -blown particulates from the tailings storage <br />facility would be suppressed with Coherex or an equivalent product. Dust suppression and <br />related protection facilities are discussed in more detail in Section 7.2.2 of this document. <br />6.1.2.2. Final Closure <br />Upon final closure and reclamation of the Henderson Mine and Mill, acidic water from the Mine <br />and Mill will be managed as described in Section 9.0 of the approved Mining and Reclamation <br />Permit, as amended and revised. <br />The Mine site, portal area, surface conveyor, mill yard, access roads, reservoir shores, tailings <br />storage facility, associated Mill buildings and protection facilities will be closed, stabilized, <br />and /or reclaimed as specified in Section 9.11 of the Mining and Reclamation Permit, as modified <br />by the approved amendments and revisions. <br />Climax Molybdenum Company <br />Henderson Operations <br />October, 2012 <br />Page 14 of 40 <br />