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SUMMARY AND CONCLUSIONS <br /> No engineering geologic conditions were observed on the site, or are <br /> anticipated, which would preclude development of an aggregate quarry. Findings <br /> include: <br /> 1. The bedrock on the site is composed of compositionally layered metamor- <br /> phic rocks of the Idaho Springs Formation. Interlayered biotite gneisses, <br /> biotite schists, amphibolites and granitic gneisses occur. <br /> 2. Metamorphic laminae are well developed and are parallel with a less <br /> well developed foliation. Both features dip moderately steeply to the <br /> east or back into the hillside. <br /> 3. The rocks do not exhibit any prominent jointing or faulting. <br /> 4. Favorable attitudes of planar features in the rock, combined with the <br /> absence of well developed fracturing, indicate a good cut slope stability <br /> for the proposed 1/2 to 1 slope ratio. <br /> • <br /> LOCATION AND TOPOGRAPHY <br /> The subject property consists of approximately 10 acres of land in the <br /> SW 1/4 of Section 32, Township 6 South, Range 71 West, near Shaffers Crossing, <br /> Jefferson County, Colorado. The site slopes down to the west at a ratio of <br /> about 2.5 to 1 and is bounded by U.S. Highway 285 to the north and Elk Creek <br /> to the west. Elevations on the property range from B,120 feet at the extreme <br /> eastern edge to 7,920 feet at the extreme western edge of the site. The slope <br /> is fairly uniform from east to west except toward the western third of the <br /> property where grading has leveled off a good portion of land (approximately <br /> 2 acres) at an elevation of 7,945 feet. Upslope from the graded area moderately <br /> dense coniferous vegetation covers the hillside. <br /> -1- <br /> JC 00780 <br /> PetersonlElk Creek <br />