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2. Mining Timetable <br /> The following table (Table D-2) is a best estimate of the sequence of operations for the life of <br /> the mine and is based on mining 350,000 to 600,000 tons per year from the quarry. <br /> Table D-2 Ralston Quarry Mining Timetable <br /> Sh" Stage of Operation Leng*b of time to <br /> complete Owrs) <br /> 1 Mining of north platform area above water tunnel 3 <br /> 2 Mining of reservoir area below water tunnel 15-20 <br /> 3 lReclarnation of processing and stockpiling area 1.00 <br /> Total 19-24 <br /> Evident from the table above,the mining of the Ralston Quarry can be roughly divided into two <br /> stages. The first is the mining of the north platform area above the Denver Water tunnel. This <br /> area will not be part of the larger reservoir area, and therefore will be backfilled, topsoiled, and <br /> revegetated. The second stage is the mining of the remaining internal area of the quarry. This <br /> will be the location of the water reservoir, and therefore will not be backfilled. <br /> 3. Mine Facilities and Operation <br /> The crushing and screening will take place within the processing area in the southwest corner of <br /> the site. Fuel will be brought on site by fuel truck, and on-site storage will be maintained at a fuel <br /> farm. This fuel farm will be constructed to have secondary containment of 110%capacity of all <br /> tanks stored within. The fuel tanks for all fixed plants will be stored at this fuel farm. Other <br /> individual pieces of equipment that are of a more mobile type will carry their own fuel tanks and <br /> will have secondary capacity of 110% as well. An SPCC Plan will be placed in the mine office <br /> and the employees will be trained to take the appropriate steps for inspections and spill response. <br /> Portable plants and equipment are covered under their own portable plant SPCC Plans. If any <br /> fuel spill is encountered,the material will be removed from the site. The Division will be notified <br /> in the case of any spill. Upon final reclamation, all equipment will be removed from the site. <br /> A permanent asphalt plant and support structures can be found in the processing area. <br /> Ralston Quarry GM 1. icW and As wtc&PIA A' <br /> January 2019 D-3 <br />