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0 trommel and sluice near each of two active pit <br /> • front end loader of Cat 980 size (1 or 2) <br /> • haul trucks of Cat 769C size, 35 ton capacity(4 to 6) <br /> • Cat D-8 size dozer(1 or 2) <br /> • 14G motor grader <br /> • hydraulic excavator (2 to 4) <br /> • in pit pump and 8"piping into sediment pond <br /> • 1,000 gallon double walled diesel tank outside office <br /> • 500 gallon diesel tanks east of office in stock tank containment <br /> • 10,000 gallon diesel tank east of the plant building in concrete block containment(2) <br /> 0 portable crushing plant 300 tph <br /> • portable wash plant 300 tph <br /> • portable screen plant 350 tph (2) <br /> 0 built in truck scale 14'x 70' <br /> 0 concrete and/or asphalt plants (periodically) <br /> All fuel tanks will have secondary containment. Some are double walled, others will be located <br /> within bermed or lined areas that have over 110% of the volume of the largest stored tank. Fuel <br /> tanks can be found in the center of the site on the pit floor and with all associated processing <br /> areas. Any spills of fuel or other hazardous material will be reported to the Division as soon as <br /> they are discovered. <br /> The gravel operation generates approximately 750 CY of fines per 100,000 tons processed. The <br /> operation will process 150,000 tons of gravel per year and will produce 1,125 CY tons of fines per <br /> year. Crusher fines will be used as backfill for reclamation or be mixed in secondary products <br /> (road base, etc.)that are sold. Silts and fines from the sluices/wash plants will be used as substitute <br /> topsoil. <br /> Portable concrete and/or asphalt plants may be erected on the site periodically. Material crushed <br /> and stockpiled on-site may be used for asphalt production. Maximum asphalt production will not <br /> exceed 2,000 tons per day. Asphalt production may occur only during the warm season months <br /> of April through October. The portable plant will not be at the site more than 6 weeks per year <br /> Alma Placer Mine t.reu Ia»,ski 4ad asmwial ,PI L( <br /> December 2017 D-7 <br />