1989-05-12_REVISION - M1977493 - Laserfiche WebLink

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• The Control Plan Particulate emissions from the tailing ponds at Climax occur primarily during the snow free period which generally occurs between mid-June through September. During the remaining per- iod, the tailing generally is under heavy snow cover. Imple- mentation of the control plan begins following snow-melt and subsequent drying of the tailing flats to accommodate heavy equipment. Because of past successes, the Climax plan for controlling and limiting fugitive particulate emissions from the dry areas of the tailing ponds will continue to involve the use of Coherex as the primary dust suppressant. The materials, equipment, and technology will remain virtually unchanged. However, in order to increase the efficiency of the program and reduce and limit incidents of blowing dust, Climax will enlarge its stabilization efforts and add the following to its plan: Expand the area of coverage to include the crests and the faces of the tailing dams. More closely monitor the surface moisture conditions of the • tailing ponds to better determine the proper timing for suppressant application. - Maintain a contingency supply of Coherex which may be required throughout the dry period for use on an ad hoc or emergency basis should unusual weather or wind conditions instigate an unanticipated and prolonged incident of fugi- tive emissions, and for spot applications. In addition to these improvements in the control plan, Climax will continue to investigate the engineering, technological , and economic feasibility of other alternatives and additions to the dust suppression program. As discussed in Exhibit E - Reclama- tion Plan, a rock cover will be placed on the dam faces begin- ning in 1989 with No. 5 dam (Appendix D, Map ID Area B) . In addition, the beach area of the Mayflower tailing pond will be rock capped by 1991. Rock capping on these areas will alleviate blowing dust. • K-3