PERMFILE65375 - Laserfiche WebLink

Home Browse Search

Rule 6.4.4 EXHIBIT D -Mining Plan A copy of the proposed mine plan map is found on Map 3, Camilletti Milner Pit # 2 -Mine Plan Map. This map shows the approximate location of all major mining related features which will be utilized during the mining operations. This map shows the location of all of [he affected lands associated with this proposed operation as well as the approximate time frame of mining for each mining azea. Three cross-sections have been prepazed to depict the proposed slopes to be encountered during the active mining phase of the project, based upon the recommendations ofthe geotechnical engineer, during the mining phase of the operation. The locations of these three cross- sections is shoHm on the above-mentioned map. Figure 1, Mine Plan Cross-Section A-A' shows the proposed slopes along an approximately southwesterly to northeast orientation during the active mining phase of the western portion of the mine pit azea. Figure 2, Mine Plan Cross-Section B-B' shows the proposed slopes during the mining in the eastern portion of the proposed mine pit azea. Figure 3, Mine Plan Cross-Section C-C' shows the approximate slope configuration during the mining phase of the operation along a westerly to easterly orientation near the center of the proposed mine pit area. Earthmoving activities will consist of using backlroes, front end loaders and bulldozers to separate the topsoil layer and remove the overburden. Salvaged topsoil will be removed using scrapers or trucks. The gravel removal operations will consist of using backhoes and loaders and the pit-run gravel will either be loaded directly into the haul trucks or moved to the crusher. A crusher will be used to process the gravel at this location. All proposed water diversions and sedimentation ponds are shown on Map 3, Camilletti Milner Pit # 2 Gravel Pit -Mine Plan Map. As required as a condition ofthe Routt County Special Use Permit, the maximum azea which will be actively mined at anyone time, excluding reclamation, will be six acres. 1. Dates of Mining. It is the applicants' desire that mining to commence in the late spring or early summer 2001 as soon as permit approvals aze obtained and continue for a period of approximately 20 years. The approximate location of individual mine areas by year aze depicted on Map 3, Camilletti Milner Pit # 2 Gravel Pit -Mine Plan Map. 2. Depth of Salva eg d Topsoil. Excavation of 17 test holes and 4 backhoe pits as well as the USDA - NRCSsoils survey information for this site document that the depth of topsoil on the proposed mine site ranges between 0.5 and 4 feet in depth. On average, these data doctument that the thickness of topsoil which can be salvaged at this location is ] .7 feet deep. Due to the anticipated area which will require reclamation, it is anticipated that all of the available topsoil at this location will be salvaged to ensure that there will be more than adequate to successfully reclaim the proposed pond shoreline at this site. The location of the proposed topsoil stockpile needed for final reclamation of this site is shown on Map 3, Camilletti Milner Pit # 2 Gravel Pit -Mine Plan Map. 3. Overburden Thickness. The overburden on this site consists oftopsoil and clay materials which overlay the gravel deposit. In all areas, commercial gravel deposits occur immediately below the topsoil. The thickness of the overburden ranges from between 1.5 to 6.5 feet. No permanent 7