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eh <br />E57EY, HUSTON b ASSOCIATES, INC. <br /> <br />2.0 METHODOLOGY <br />2.1 MAPPING/SAMPLING <br />2.1.1 Northern No. 1 (FF-Seam) Mine <br />The soil map for the Northern No. 1 (FF-Seam) Mine area, (Exhibit I-1}is <br />from the SCS intensity III survey for Rio Blanco County. The SCS mapping was <br />transferred from a map of one inch equals 2,000 feet (1:24,000) to a map of 1 inch <br />equals 500 feet (1:6,000) for inclusion in this report. No additional field mapping <br />vcas conducted because of snow on the ground during the field sampling program. <br />The soil map legend (Section 3.2.1), describes the series in each map unit, their <br />occurrence, moisture-temperature regime, and the percentage of the map unit each <br />series occupies. <br />Ten soil series descriptions of the principal soils of the permit areas are <br />presented in Section 3.1. These descriptions are from the SCS established survey <br />descriptions, with the exception of the Barnette (which is from the Rio Blanco <br />Survey) and the Redthayne (which is a tentative series). In addition, detailed profile <br />descriptions of five of the principal soils of the permit azea were collected in the <br />field in April, 1979. These descriptions are included in the Appendix. <br />Principal soils n~thin each permit area were described and <br />sampled. Typifying pedons of five (5) principal soils occurring at <br />the Northern No. 1 Trine were described and sampled. <br />Typifying pedons were located within mapping units where profile <br />horizonations were within the range and characteristics of that soil (as <br />outlined in established series descriptions by the Soil Conservation <br />Service). Pedons were excavated to 60 inches or to bedrock, whichever <br />was more shallow. <br />L <br />I-3 <br />