Laserfiche WebLink
topography (See Pre-mining Topography Map (Map 18), Post-mining Topography Map <br />(Map 19) and Pre-mining and Post-mining Cross Sections (Map 20)). <br />In the case of high-wall reduction following coal removal operations, it may become needed <br />to perform either cast blasting or production dozing to minimize slopes prior to other <br />reclamation activities. <br />Final grading for topsoil placement will be done in a manner that reduces erosion and <br />provides a surface for topsoil that minimizes slippage. Prior to completion of topsoil <br />replacement on 3:1 (horizontal to vertical) slopes, a dozer will construct a drainage control <br />bench or furrow, where necessary, to slow water flow on the longer slopes and minimize <br />erosion. The design Calculations for the benches and furrows are found in Exhibit 7, <br />Hydrology Information. At the completion of the final grading, topsoil will be redistributed <br />over the regraded spoil and revegetated in accordance with Section 2.05.4. <br />Other surface treatments are also described in section 2.05.4. A list of the equipment used by <br />Colowyo in order to perform the day-to-day operation of coal mining is shown in Table 4, <br />Equipment List. <br />2.05-11 Revision Date: 3/10/06 <br />Revision No.: TR-61 <br />