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u <br />Rufr 2: Pcrmi(t <br />during future inventory of the permit area, and are expected to be of similar type and frequency <br />as those already discovered, and will be evaluated and treated similarly. A summary of the <br />baseline investigation is included as Exhibit 5. Subsurface mining activities are not anticipated <br />to cause significant subsidence and therefore hold no potential for impacts to cultural resources <br />outside the bounds of surface facilities. <br />A cultural resource inventory is proposed for unevaluated sites included in the life of mine area. <br />Additional investigations, including test excavations, informant interview, and archival research <br />are proposed for the 27 unevaluated sites and any new unevaluated sites discovered as the result <br />of additional inventory. Data recovered or retrieved during these further investigations will be <br />sufficient to recommend and justify National Register eligibility assessment. <br />2.04.5 GENERAL DESCRIPTION OF HYDROLOGY AND GEOLOGY <br />This application contains comprehensive and detailed descriptions and maps concerning the <br />geology and hydrology of the proposed permit area, adjacent area, and the general area. The <br />definitions of these areas, as contained in Rule 1.04, have been applied in what LCC believes to <br />be a reasonable manner to the lands surrounding the planned mining operation. The permit area <br />contains all lands on which the operator will conduct mining operations during the term of the <br />permit. The adjacent area covers lands and resources outside the permit area which may be <br />• adversely affected by mining operations. The general area includes the topographic and <br />groundwater basin surrounding the azea to be mined, including one or more watersheds containing <br />perennial streams and groundwater systems. The general area is of sufficient size to allow <br />assessments of cumulative hydrologic impacts in the basin. <br />Information sufficient for a complete response to this section on the geology and surface and <br />groundwater systems for all lands within the general azea described above is included under Rules <br />2.04.6, Geology Description and 2.04.7, Hydrology Description of this application provided <br />below. <br />2.04.6 GEOLOGY DESCRIPTION <br /> <br />The site azea is underlain by rocks of the Upper Cretaceous and Paleocene Raton Formation and <br />the Paleocene Poison Canyon Formation. A regional geologic map is included as Figure 2.04.6-1. <br />The Raton Formation is a coal bearing unit within the Raton Basin. The Raton Formation consists <br />of a sequence of sandstones, shale, siltstone and coal units deposited in a delta-plain and fluvial <br />environment. Sandstone units are channel in origin. The upper portion of the Raton Formation <br />is a combination of fluvial and colluvial sedimentation caused by marine regression during the <br />Laramide uplift during sediment deposition within the basin. Continued marine regression resulted <br />in grading into the coarser sediments of the Poison Canyon Formation. <br />PERMR.<]S~Dramhr 30, 1996 2.04-4 <br />