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topography (See Pre-mining Topography Map (Map 18), Post-mining Topography Iviap <br />(Map 19) and Pre-mining and Post-mining Cross Sections (Map 20)). Final grading for <br />topsoil placement will be done in a manner that reduces erosion and provides a surface for <br />topsoil that minimizes slippage. Prior to completion of topsoil replacement on 3: I (horizontal <br />to vertical) slopes, a dozer will construct a drainage control bench or furrow, where <br />necessary, to slow water flow on the longer slopes and minimize erosion. The design <br />Calculations for the benches and furrows are found in Exhibit 7, Hydrology Information. At <br />the completion of the final grading, topsoil will be redistributed over the regraded spoil and <br />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 /> <br />• <br />2.05-11 <br />