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Table 6-2 <br />Parameter, Procedure, and Reference List for Seneca II-W <br />Overburden Core Analysis by Peabody Central Lab <br />Freeburg, Illinois, October 1981 <br />Parameter-Units Procedure-Reference <br />Sample preparation Samples were dried at less than 35°C and <br />crushed to pass a 10 mesh sieve <br />lexcessive grinding was avoidedl. <br />Subsampling Tess than 2 mm fraction USDA 119691, Method 1. <br />Preparation of saturation extract and saturation USDA (19691, Methods 2, 3a, and 27b. <br />percentage determination <br />pH (determination using saturated pastel USDA (19691, Method 21a. <br />pH (determination using saturation extract) USDA (19691, Methods 3a and 21c. <br />Conductivity of saturation extract in mmhos/cm at 25°C USDA (19691, Method 4a. <br />Calcium content in the saturation extract in meq/1 USDA (19691, Method 3a and Sandoval <br />and Power (1978), Method 2. <br />Magnesium content in the saturation extract in meq/I Same as Calcium. <br />Sodium content in the saturation extract in meq/I Same as Calcium. <br />SAR and ESP in % USDA (19691, p. 26. <br />Sulfate content in the saturation extract in meq/i USDA (19691, Method 3a and Sandoval <br />and Power 11978) Method 7A. <br />Nitrate-Nitrogen in the saturation extract in ppm USDA (19691, Method 3a and ASTM <br />(19801, Method D992-71. <br />Boron content in the saturation extract in ppm USDA (19691, Method 3a and Bower and <br />Wilcox (19651. Method 62-3.6. <br />Fluoride content in the saturation extract in ppm USDA 119691, Method 3a and APHA <br />119751, p. 391. <br />Total combustible and non-combustible solids in % ASTM (19801, Method D3174-73. <br />Particle size analysis in % sand, silt, and clay Day (19651, Methotl 43-5. <br />PR03 19 Revised 01 /02 <br />