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event" area, the drillpads at methane degas borehole pads, the sites of the <br />former Lone Pine substation and Lone Pine ventilation fan and associated <br />facilities, the corrals laydown/staging area, and the Deer Creek Shaft area <br />B. Diversions and Conveyance of Overland Flow <br />1. Sediment control ditches have been designed and constructed in compliance <br />with Rule 4.05.3. Locations are shown on Map 54, and designs can be found <br />in Exhibit 66. A summary of the designs can be found on Table 44 in Exhibit <br />66 of the permit document [4.05.3(2)]. <br />C. Stream Channel Diversions <br />1. The West Elk Mine does not propose any stream channel diversions; <br />therefore, this section is not applicable. <br />D. Sedimentation Ponds <br />Mountain Coal Company has constructed seven sediment ponds and one <br />freshwater pond (FW-1). The ponds have been designed, constructed and <br />maintained in accordance with the requirements of 4.05.6 and 4.05.9. The <br />location of these ponds can be found on Maps 54 and 54B. The designs of the <br />ponds can be found in Exhibit 66. The ponds are located as near as practical <br />to the disturbed area and are not located within perennial streams according to <br />4.05.6(1)(6). <br />E. Acid-forming and Toxic-forming Spoil <br />Underground development waste from underground workings at the West Elk <br />Mine is handled as coal mine waste and placed on the Refuse Pile Expansion <br />area. No acid-forming or toxic-forming materials are present in the spoil in <br />quantities significant enough to affect groundwater quality. Therefore, special <br />handling is not required for these materials [4.05.8(3)]. <br />F. Impoundments <br />1. Refer to the section regarding sediment ponds (4.05.9). <br />25 <br />