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treatment capacity for the nigh flows experienced in the spring. <br /> Settling Pond #2 was excavated completely after cleaning and the <br /> bottom and sides were sealed with a relatively impermeable <br /> material . <br /> The portable lime feed system was active from the last of May to <br /> the first of October . <br /> Activities planned for 1991 are: <br /> (1) Maintain and operate the lime feed system during the period <br /> of May to October. <br /> (2) To do any site cleanup required . <br /> Sunnvside Basin (Lake Emma) Area - Plate No. 2 <br /> The waste rock stockpiles were treated with ProMac during July <br /> and October as committed to for mitigation of acid production <br /> from the temporary waste stockpiles. The samples taken in the <br /> fall for testing were lost in transit or at the lab so we don ' t <br /> have specific data to show that the treatment process is still <br /> working although samples from the treated Test Plot area shows <br /> that it is (report attached) . The area will be sampled and <br /> tested this summer when the area is accessible . <br /> The Lake Emma test plot area was evaluated by Tom Colbert of IMS <br /> Inc. . Tom originally constructed the test plots in 1988 and has <br /> evaluated the results annually (report attached along with a copy <br /> of a presentation given by Tory Colbert on the area and a BF <br /> Goodrich analysis of samples taken from the site) . <br /> The hole into the open stope in the Sunnyside Pit was covered <br /> with a reinforced concrete slab. The slab is substantial enough <br /> to allow 10 feet of cover plus a 50, 000 lb surcharge. <br /> Toe Sunnyside portal was permanently closed though backfilling as <br /> committed to in TR-07 . <br /> The No Name portal was permanently closed through backfilling and <br /> the road cut to the No Name portal was reduced with a track hoe <br /> as committed to in the reclamation plan for the area (TR-07) . <br /> Planned activity for 1991 is : <br /> (1 ) Treat the waste rock stockpiles in June and October with <br /> ProMac for ongoing maintenance of the temporary waste <br /> stockpiles . <br /> (2) Do the preliminary construction work (ie haul roads , <br /> drainage structures and underground prep work) for filling <br /> the Lake Emma hole in 1992. <br /> (3) Monitor the subsidence points , revegetation test plots and <br /> any subsidence in the diversion trench subsidence fill . <br /> - 3 - <br />