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Park County Environmental Health Department <br />P.O. Box 216 • Fairplay, CO 80440 <br />Phone: 719-836-4267 • FAX: 719-836-4266 <br />Ansley Gravel Pit Expansion Permit <br />August 20th, 2009 <br />EXHIBIT I., SOILS INFORMA TION <br />The following resources were used in developing soils information at the current Ansley Pit <br />locale: <br />Parker, Ben H., Jr. (1974) The Gold Placers of Colorado, Colorado School of Mines. <br />Soils Conservation Service (SCS). 1976. Range Site Description for Mountain Outwash (Code 316). <br />Geologic Wonders of South Park, Colorado, 2001, by Donald P. McGookey. <br />The Ansley Gravel Pit materials are located along the South Platte River south east of Fairplay, <br />Colorado along Colorado Highway 9. They primarily consist of glacial origins and ancient <br />streambed alluviums related to lateral and terminal moraines of the final Wisconsin era glacial <br />retreat. Later outwash and flattening have left what appears to be largely untouched (by man) <br />open fields of slightly sorted cobbles and sandy gravels with a thin topsoil supporting grasses <br />and very low growing forbs. <br />Recent mining and excavation have revealed cuts and bladed off cross sections, which appear <br />identical to cross-sections, revealed to the east by stream action along the high banks. The <br />sands and gravels are comprised of granitic gneisses, decomposed Jurassic sandstones and <br />volcanic and metamorphic materials from a sundry assortment of upstream and upslope source <br />geology. <br />SIZING ESTIMATES OF GRAVELS on the ANSLEY CLAIM <br />Plus 24" cobble w/ few greater than 36" 10% <br />Plus 6 " rocks (minus 24") 10% <br />Plus 2" rocks (minus 6 inch) 30% <br />Sands (minus 2 inch) 40% <br />Clays and very fine silts / sands 10% <br />The remnants of virgin gravels on this site show thickness of 20 to 30 feet along the previously <br />worked pits on the west side and the north side of the current operation. No ultimate bedrock <br />was observed which might be sandstones and the adjacent Maroon Frm. At depth. <br />Photos 1, 2 and 3 are representative of typical soil profiles on site.