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Revised 11/15/81 <br /> The coal processing waste banks which are being constructed at the <br /> Maxwell Mine have been designed to ensure stability and are approved by <br /> MSHA. A specific design of the coal processing waste bank is shown in <br /> Figure 3, Coal Processing Waste Bank Section. The material is hauled <br /> from the coal processing plant to the waste bank utilizing small end <br /> dump trucks. The material is spread on the waste bank by crawler <br /> tractors. Continued haulage across the tops of these structures and <br /> spreading of the material causes the material to be compacted to ensure <br /> that a stable structure is built. CF&I Steel Corporation has conducted <br /> geotechnical studies which are shown in Exhibit 15, Geotechnical Study - <br /> Coal Processing Waste Bank. The location of the coal processing waste <br /> banks are shown on the Mine Plan Map (Map 3) . CF&I Steel Corporation <br /> does not anticipate increasing the size of the coal processing waste <br /> bank location during the permit term. Continued use of these facilities <br /> and their relationship to the adjacent alluvial valley floor is reviewed <br /> in Section 2.06 of this application. <br /> Upon the completion of the mining operation at the Maxwell Mine, the <br /> coal processing waste bank will be revegetated and reclaimed as <br /> described in Section 2.05.4 of this application. <br /> Ponds and Embankments <br /> The general surface water and sediment control plan which is currently <br /> being used at the Maxwell Mine consists of diversion ditches which route <br /> runoff from the disturbed areas into two sediment control ponds. These <br /> ponds were constructed during 1980 and are shown on the Mine Hydrology <br /> Map (Map 9) and the Sediment and Surface Water Control Plan Map (Map <br /> 13). Because no additional areas are planned to be disturbed during the <br /> term of the permit, no additional sediment control structures and <br /> ditching or diversion structures are required during this term. <br /> Calculations which have been completed for the design of these <br /> structures are shown in Exhibit 16, Surface Water and Control Design <br /> Data. <br /> 2.05-12 <br />