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<br />Section 779.14(a) Continued. <br />Rule 2.04.6 <br />The combination of structural and stratigraphic constraints in the mine <br />plan area result in a unique mining situation. The Sudduth Seam is <br />steeply dipping from its outcrop to the maximum mining depth of <br />approximately 350 feet. This, coupled with a seam thickness of about 50 <br />feet, dictates an open pit mining operation. <br />The stratigraphic relationships of beds exposed within the mine plan area <br />are shown on Figure 5, General stratigraphic Column. Locations of <br />outcrops and exposures of formation within the mine plan area are shown <br />on the Kerr Mine Area Geology Map (Map 6a). Site specific lithology is <br />illustrated by Exhibit 22, Drillhole Logs, and shown on the Geologic <br />Cross-Sections A-G (Maps 7a through 13a). <br />The stratum t;o be affected at the Kerr loadout area is Timited to the <br />alluvium associated with the Illinois River. This alluvium, which is <br />puaternary in age, is typical of stream-laid deposits in North Park, <br />described as sand and gravel in a matrix of silt and other fine-grained <br />material. The thickness of the alluvium is generally less than 25 feet <br />(Voegeli, 1965). The buildings associated with the loadout facility are <br />not constructed directly on the alluvium, but rather on approximately five <br />{5) feet of fill placed upon the alluvium. No footings, foundations, or <br />other structures associated with the loadout facility penetrate the <br />alluvium. <br />(b) (1) Test borings or core samples from the proposed permit area shall <br />be collected and analyzed down to and including the stratum immediately <br />below the lowest coal seam to be mined to provide the following data in <br />the description: <br />(i) Location of subsurface water, if encountered; <br />• (ii) Logs of drill holes showing the lithologic characteristics and <br />thickness of each stratum and each coal seam; <br />-13 a Revised- <br />