Laserfiche WebLink
Exploratory borings were performed by Bestway Concert and subcontracted to <br />Drilling Engineers. The bedrock depths in the proposed mine areas ranged from <br />approximately 15 feet to 19 feet below the ground surface. <br />rn.) Nature of the stratum immediately beneath the material to be mined in <br />sedimentary deposits <br />The site is located approximately 15 miles east of the foothills of the Colorado <br />Front Range on the western flank of the Denver Structural Basin. The basin is a <br />downwarp of sedimentary strata that tends north-northwest, parallel to the <br />mountain front. In the project area, the sedimentary bed dips gently eastward <br />toward the axis of the basin east of the site. Based on regional geologic mapping <br />(Colton, 1978), the near surface bedrock in the project area is the Paleocene and <br />Upper Cretaceous Denver and Arapahoe Formations. The bedrock is overlain by <br />upper Pleistocene and Holocene (Quartemary age) gravel deposits and eolian <br />(wind blown) overburden soils. The gravel deposits exist primarily within the <br />Broadway Alluvium deposit. The bedrock unit consists mainly of claystone and <br />may contain lenses of siltstone and sandstone. <br />(g) Identify the primary and secondary commodities to be mined/extracted and <br />describe the 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 />r) Specify if explosives will be used in conjunction with the mining (or reclamation) <br />No explosive material will be used on-site. <br />Bestway Concrete & Aggregates — Lee Amendment -N. La Poudre Mine — MLRB 112 Permit Application <br />Exhibit D - 3 <br />