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GoodMiller #2 Pit 112c Permit <br />The material volumes described in Table 2 are approximate but are based on the current operation <br />and estimated gravel thicknesses. The life of the mine is estimated at 8 years after 2014 and is <br />based on an average annual production of 500,000 tons per year. <br />The topsoil volume was estimated using an average depth of 6 inches over the surface area. The <br />overburden volume was estimated using an average depth of 2 feet over the surface area. Area 1 <br />has already been partially mined under a 11 Oc permit (see Map C -1) and all volumes in the Table <br />D -2 represent the future mining. There are also an existing topsoil and overburden stockpiles <br />located on the northernmost portion of the permit. <br />The overburden available for backfilling is the overburden from the stripping operation plus the <br />minimal waste fines generated by the screening operation. Minimum backfill volumes can be met <br />by the topsoil and overburden stripping. The additional overburden and waste fines will be used <br />to shape the pit floor and slopes for final reclamation. <br />Mine Facilities and Operations <br />Crushing and screening operations will utilize portable plants. They will follow the mining face <br />to the extent feasible in order to minimize the distance the front end loader must travel and to <br />satisfy air emissions permits. The office and scale will be located as shown on Map C -2 until <br />sufficient area is available on the pit floor to move them to a previously mined area. This will <br />allow the gravel beneath the office and scales to be extracted. The ramp onto the pit floor will <br />also be removed and replaced by backfill material once the mining geometry allows for the <br />replacement to occur without impacting the operation. <br />Topsoil, Overburden and Wash Fines Handling <br />An existing topsoil stockpile is located at the northern edge of the current disturbance area, as <br />shown on Maps C -1 and C -2. Additional topsoil stockpiles will be located around the pit perimeter <br />near the gravel daylight line if necessary as shown on Maps C -2. This area will be used to <br />temporarily store the topsoil that cannot be directly placed on backfilled areas, overburden will <br />continue to be stripped in advance of the mining operation. Its thickness varies from 0 feet to 3 <br />feet but it is expected to average 2 feet over the entire area. Since there is a significantly lesser <br />amount of topsoil and overburden compared to gravel, the stripping will only be needed a couple <br />GoodMiller #2 Pit Dec 2014 D -4 <br />