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• <br />overburden or waste rock stockpiles will be generated during the mining operations once the mine <br />reaches a steady state of operation since all of these materials will be used to backfill the previously <br />excavated mine pits. However, during the first few years of mining there will be inadequate room <br />to practice contemporaneous reclamation since there will not be ample room for this material to be <br />placed backed into the excavated pit. During approximately the firs[ six years of mining some <br />temporary overburden stockpiles will be stockpiled at the location shown on Map 3, Camilletti <br />Milner Pit # 2 -Mine Plan Map. Overburden generated from the initial mine pit will be used to <br />construct the mine access roads, but excessive overburden material might be generated which would <br />be placed into this proposed stockpile.. Backfilling in Mine Block 1 and Mine Block 2 areas are will <br />commence along the western northern portion of the proposed mine pit azea and proceed in and <br />easterly direction as mining moves in that direction. Priority will be given towards immediate <br />backfilling of the areas next to the proposed final shoreline of the pit azea. <br />4. Thickness of Grave] to be Mined. Twenty one exploration drill holes or pits dug to date reveal that <br />the thickness of the gravel deposit is governed primarily by the depth of the shale layer which forms <br />the bottom of the old river channel in this area. Based upon these data, the depth of gravel ranges <br />from approximately 32 feet to upwards of 38 feet, and averages 35 feet in thickness. <br />5. Components of the Mining Operation. The existing ranch road which services this site is not wide <br />enough to serve the anticipated truck traffic which will be generated by this proposed gravel pit. <br />Therefore, it is proposed to construct a proposed mine access road which is shown on Map 3, <br />Camilletti Milner Pit # 2 -Mine Plan Map in the vicinity of the azea to the north of where the natural <br />gas pipeline and existing electric transmission line cross Routt County Road # 179. Due to the <br />proximity of this operation to the existing main office and maintenance buildings, it is not <br />anticipated that any additions] permanent buildings will need to be constructed at this site. However, <br />there will be an office trailer, scale house and temporary maintenance building in the location near <br />the west end of the proposed mine access road shown on Map 3, Camilletti Milner Pit # 2 -Mine <br />Plan Map. <br />6. Dimensions of Disturbances. The location of each proposed mine block as well as the grave], <br />topsoil and overburden stockpiles are shown on Map 3, Camilletti Milner Pit # 2 Gravel Pit -Mine <br />Plan Map. This [nine is being permitted as a 300,000 ton per year operation, however, Routt County <br />has placed restrictions on the operation to where normal production will be 180,000 tons per year <br />which can be escalated to 300,000 tons per year via an administrative permit.. This means at full <br />production approximately 3.5 acres of land will be mined per year but under currently approved <br />Routt County only approximately 2.1 acres would be mined per year. <br />For proposed Mine Block 1, the average dimensions ofthe yearly mine blocks would be between 400 <br />and 700 feet long and between 130 and 380 feet wide. For Mine Block 2, the average dimensions <br />ofthe yearly mine blocks will be between 470 and 900 feet long and between ] 02 and 324 feet wide. <br />7. Road Dimensions. The proposed gravel pit access road will average approximately 50 feet wide. <br />This new section of road will be constructed to running surface width of approximately 30 to 35 feet <br />8 <br />