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The gueternery age deposits within the permit area consist of thin alluvial (Exhibit 6-t), • <br />colluvlel and landslide deposits along Grassy Creek, Annand Drew, Scotchman's Gulch, end <br />Sage Creek. A photo and topo interpretive study was completed by Stover (1994) to <br />delineate probable landslide deposits ranging from very old to active. These areas, shown <br />on Exhibit 6-1, will be verified by field analysis during 7995. There are not any <br />outcrops of Miocene extrusive igneous rock nor any evidence of intrusive rocks in the <br />permit area. <br />Coal Duality. Table 1, Coal Seem Analysis, summerixes the quality of the Lennox, Madge, <br />and Lolf Creek coal seams of the Yoast permit area. Specific analysis for the mineral <br />marcasite was deemed unnecessary as marcasite content is included as part of the total <br />sulfur (pyritic) content. <br />Overburden Assessment <br />Overburden samples obtained from the Yoast Mine study area were analyzed to identify any <br />acid-forming, toxic-forming, alkalinity producing, or other inhibitory materials present <br />within the proposed mine boundary. Physical properties of the overburden were determined • <br />to define campection, stability, permeability, erodibility, and water holding <br />characteristics. Chemical and physical analyses also reveal the most desirable overburden <br />strata to be placed et the spoil surface and in the pit base. This baseline information <br />is required prior to mining to effectively prepare a mine plan that restords landscape <br />productivity end which also minimizes environmental degradation. <br />Contained within this report ere evaluations of the chemical and physical date, locations <br />and extents of suitable end unsuitable overburden, end proposed methods of mitigation. <br />Spoil mixing phenomenon is discussed and core variability is documented. A sampling <br />program immediately after mining is proposed to investigate and evaluate mining methods, <br />overburden mixing, and reclamation success (see Tab 2), Minesoil Reconstruction). These <br />investigations were completed to assure adequate postmine vegetation growth and ground <br />water aquifer charec[eri stirs. <br />Conclusions and recommendations are based on the interpretation of laboratory data and <br />lithological descriptions developed during the sample collection end analysis. <br /> • <br />Overburden SamolinR Schedule. The Yoest mining area (coal recovery area), comprising <br /> <br />about 48B acres, is located 4 miles southwest of the Seneca II Mine end 3.5 miles east of <br />10 Revised 03/01/95 <br />