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III IIIIIIIIIIIIIIII <br />• <br />Doc Date:12111/2001 <br />SIB 2.04.9 SOILS RESOURCE INFORMATION <br />Soil Sampling <br />A soil sampling program was conducted at the Southfield Mine (formerly <br />Dorchester No. 1 Mine) in May, 1979 to collect analytical data on the soil <br />types found within the mine property. Ten soil pits were excavated to a <br />depth of 6 feet or to rock, and the freshly exposed soil profiles <br />examined. Additionally, soil samples were obtained from two topsoil <br />stockpiles, a small pile of grayish material located next to a topsoil <br />stockpile, and from an access road cut. Sampling encompassed both topsoil <br />and subsoil materials so representative A horizon (topsoil) and B horizon <br />(subsoil) samples were obtained for each sample site. A total of 26 soil <br />samples were collected, air-dried, and sent to the lab for analysis. <br />• The soil samples were analyzed for soil particle size, texture, organic <br />matter, pH, electrical conductivity (EC), soluble calcium, magnesium, <br />sodium, sodium adsorption ratio (SAR), saturation percent (SP), <br />nitrate-nitrogen, ammonium nitrogen, phosphorus, potassium, iron, and <br />manganese. <br />In addition to the detailed soil sampling work, the USDA-Soil Conservation <br />Service (SCS), Canon City office, in cooperation with Soltesco, a Grand <br />Junction, Colorado based consulting firm, conducted a soil survey and <br />supervised collection of 4 soil samples in the coal loadout area in Feb., <br />1919. As a result of incomplete documentation, only 3 of the sample sites <br />(q2, 3, 8 4) have been located and limited analytical data is available. <br />The loadout area soil samples were taken from areas where topsoil was to <br />be salvaged and the samples were sent to the Colorado State University <br />Soils Lab for analysis. <br />A second soil survey was conducted at the loadout in response to questions <br />. from the CMLRD regarding soil type, depth, horizontal extent, depth to be <br />salvaged and replaced, etc. Seven backhoe pits were excavated within a <br />16 acre area near the existing loadout facility. <br />2.04.9-1 <br />