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locations of the property extents and boring locations. The bedrock depths in the <br /> proposed mine areas ranged from approximately 24 feet to 55 feet below the ground <br /> surface. Earth Engineering Consultants(EEC) performed an analysis in May of 2017 as <br /> part of a feasibility study and this information was reviewed and is consistent with the <br /> investigation performed in late winter of 2018. <br /> (M) Nature of the stratum immediately beneath the material to be mined in sedimentary <br /> deposits <br /> The surficial soils at the project site are described as Broadway Alluvium(Pleistocene), <br /> described as a well sorted and well stratified sand and gravel deposit. The Broadway <br /> Alluvium is overlying the Laramie Formation (Upper Cretaceous),described as a <br /> claystone shale containing lenticular beds of sandstone and lignite, as illustrated on the <br /> Geologic Map of the Boulder-Fort Collins-Greeley Area, Colorado by Roger B. Colton, <br /> 1978. Gradation testing conducted selected soil samples obtained from our borings <br /> indicate a generally finer grain size than as described on the geologic map by Colton. <br /> The gradation results more closely match the soil description by Soister, 1965, as Late <br /> Pleistocene(Wisconsin)age Alluvial Sand and Silt as described on the Geologic Map of <br /> the Platteville Quadrangle, Weld County, Colorado by Paul E.Soister, 1965. The <br /> referenced geologic maps indicate the alluvium deposits are generally reported to be on <br /> the order of twenty-five to thirty-five feet deep within the area of the projectsite. The <br /> office of the State Engineer Division of Water Resources indicates this site is situated <br /> above the Laramie-Fox Hills Aquifer. No seismic faults are reported within approximately <br /> twenty five miles of the site. The Colorado Geological Survey(CGS) reports potentially <br /> active faults at least 25 miles west-southwest of the project site. The Cretaceous Age <br /> Laramie Formation is known to have normal faulting which offsets the layered <br /> stratigraphy, however,these faults likely occurred during or shortly after deposition and <br /> are generally not capable of producing a significant magnitude earthquake. (source EEC <br /> Report May 26,2017) <br /> (g) Identify the primary and secondary commodities to be mined/extracted and describe the <br /> intended use. <br /> The primary commodities are sand,gravel and fill; intended for construction materials. <br /> (h) Name and describe the intended use of all expected incidental products to be <br /> mined/extracted by the proposed operation. <br /> There are no expected incidental products to be mined. <br /> (i) Specify if explosives will be used in conjunction with the mining(or reclamation) <br /> No explosive material will be used on-site. <br /> Hunt Water LLC—Gravel Mine—MLRB 112 Permit Application <br /> Exhibit D-3 <br />