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supernatant pond from the underdrain system is either evaporated or used for imgation of <br />reclaimed portions of the tailing disposal area during the summer months. <br />The tailing disposal area is composite lined with atwelve-inch thick compacted soil layer <br />overlain by a 40-mil VLDPE synthetic liner. The tailing Facility is a zero discharge <br />facility and was designed to retain precipitation falling within the footprint of that facility <br />and the crusher/mill area, located to the north and east of the tailings disposal area. In <br />addition, upgradient diversions to the south and east of the tailing facility are designed to <br />collect and convey upgradient runoff away from the tailings disposal facility. Additional <br />design information is contained in the DMG permit. These facilities remain in place and <br />functional and will remain so until final reclamation of the tailing disposal area is <br />completed. <br />Final reclamation plans for the tailing disposal area calls for re-establishing the <br />upgradient and tailing disposal area drainage patterns. This requires placement of fill <br />material in low areas of the tailing disposal area and grading the final fill surface to a <br />common spillway that will be located at the northwestern section of the tailing disposal <br />area. Although significant portions (i.e., approximately 75 acres) of the tailing disposal <br />area have been filled, topsoiled and vegetated, the facility final reclamation will not be <br />completed until the continued management of the supematant pond and underdrain flow <br />volumes is completed. Before upgradient drainages can be routed through the facility, <br />final reclamation of the tailing disposal area must be completed and a spillway must be <br />constructed to allow conveyance and collection of stormwater from the facility surface <br />and the upgradient diversions. Currently the supematant pond covers approximately 17 <br />acres of the facility and the underdrain flows average approximately 30 to 50 gallons per <br />minute. In addition, the facility is currently managed as a contingency facility for the <br />management of the West Pit water treatment facility reject concentrate stream. <br />Therefore, the upgradient drainage will continue to be diverted and precipitation falling <br />within the tailing disposal area will continue to be captured and managed within the <br />tailing disposal facility supernatant pond and underdrain collection system until the West <br />Pit water treatment operations are suspended. <br />Battle Mountain Resources, Inc. TeJesto Solutions, lnc. <br />m~mu no.mwnrer mnnnsrmemamn.duc 8 May 3, 1001 <br />