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eh <br />ESPEY, HUSTON b ASSOCIATES, INC. <br />• <br />Selected pedons were sampled by horizon according to the <br />standards of the National Cooperative Soil Survey. Approximately five <br />samples were collected per pedon. Horizons less than 3 inches (7.62 csn) <br />were not sampled separately; horizons thicker than 12 inches (30.5 c7n) <br />were separated into at least two samples. <br />About 4 pounds of material including a representative sample <br />Df coarse fragments (up to 3 inches) mere collected for each horizon. <br />The sar~les were stored in polyethylene bags and transported <br />to the lab for analyses. <br />2.2 ANALYSIS AND INTERPRETATION <br />• <br />2.2.1 Northern No. 1 (FF-Seam) Mine <br />T'he soil samples collected at the Northern No. 1 (FF-Seam) Mine area <br />were analyzed by Colorado Agricultural Consultants. Laboratory analyses were <br />conducted using standard procedures for soil analysis including U.S. Depaztment of <br />Agriculture (USDA) Handbook 60 (U.S. Salinity Laboratory Staff, 1954) and <br />American Society of Agronomy (ASA) Monograph No. 9 (Black, 1965). <br />Estimated potential yields for agricultural lands and/or rangelands are <br />presented in Section 3.3.1 for those soils of the Northern No. 1 (FF-Seam) Mine area <br />for which data is available from the SCS. <br />T'he evaluation of the soils as sources of reconstructive materials follows <br />the USDA National Soils Handbook (USDA, 1978) guidelines. The interpretation is <br />described fully in Section 3.4 of this report. <br /> <br />I-4 <br />