Laserfiche WebLink
Blue Pit 112 Permit Amendment <br />Topsoil has been salvaged from the existing operation and is stockpiled on the eastern portion of <br />the existing permit area (See Map C -2). Topsoil will also be salvaged from the expansion area. <br />Initially, topsoil will be stockpiled to the east of Mining Area 3. As the mining progresses, topsoil <br />can be directly placed in the reclamation areas to remove the stockpile step. Topsoil will be replaced <br />at an approximate thickness of 12 inches over the entire site. Topsoil will only be placed on areas <br />ready for final reclamation. The temporary seed mix that has been designed for this site to reduce <br />visual impacts will grow in overburden. <br />Haul Roads and Access <br />The haul roads that will remain after reclamation are shown on Map F. These roads will be used by <br />the landowner for access through the site as well as to the irrigated pasture on the bottom of the <br />site. Additionally, access to the concrete plant operation will remain after final reclamation. <br />Reclamation Sequencing <br />Reclamation of the site will follow the mining operation. This contemporaneous reclamation allows <br />for visual impact mitigation as well as limiting the size of the bond required by the Division of <br />Reclamation, Mining and Safety. See the Cross Section Map C -3 for further details on the <br />reclamation sequencing which includes the temporary and final reclamation activities. <br />Table 5: Backfill Volumes <br />Overburden <br />and Topsoil Backfill <br />Volumes <br />yards) <br />Import <br />Topsoil <br />Topsoil <br />Acres Backfill Needed <br />Backfill On -Site <br />Needed <br />Needed <br />Available <br />64.57 623,165 <br />948,508 <br />(325,343) <br />109,013 <br />138,261 <br />65.91 1,914,618 <br />425,339 <br />1,489,279 <br />110,073 <br />106,335 <br />4.20 47,941 <br />27,104 <br />20,837 <br />7,092 <br />6,776 <br />134.68 2,585,724 1,400,952 1,184,772 226,178 251,372 <br />The existing overburden available for backfilling consists of the amount imported and backfilled in <br />the east portion of Area 1 (818,990 cubic yards) and the amount available from future mining <br />(581,962 cubic yards) which is a total of approximately 1.4 million cubic yards over the entire permit <br />area). This is not sufficient to fully reclaim the site, but import material will account for the <br />shortage. The total bacicfill volume required is 2.58 million cubic yards, which is less than the 1.4 <br />million cubic yards available which is 1.18 million cubic yards. The average total volume of import <br />material has been approximately 55,000 cubic yards annually. Once mining in the expansion area <br />commences, additional material can be accepted. Additional material was not able to be accepted <br />due to space limitations. Also, the operator is currently charging to accept material. If more <br />material is needed to reclaim the slopes, the fee can be waived. It is predicted that approximately <br />39,492 cubic yards would need to be imported annually to compensate for the bacicfill deficit of 1.18 <br />Blue Pit May 2014 E -3 <br />