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!~ <br />4 <br />Appendix 6-4, Table 2. <br />Overburden Analysis Procedures and References <br />Used by Peabody Central Lab, <br />Freeburg, Illinois, <br />July 1981. <br />Detection <br />Parameter Unit Limit Reference <br />Water Soluble <br />Potassium <br />Carbonate/ <br />Bicarbonate <br />Sulfate <br />Chloride <br />Fluoride <br />Cation Exchange <br />Capacity <br />Exchangeable <br />Potassium <br />Organic Matter <br />Total Combustible <br />Solids <br />Pyritic, Sulfate and <br />Organic Sulfur <br />Total Sulfur <br />meq/1 <br />meq/1 <br />meq/1 <br />ppm <br />ppm <br />meq/1009 <br />ppm <br /> <br />0.1 EPA-600/4-79-020 <br />Method 258.1 <br />0.1 USDA Handbook 60, page 98 <br />0.1 ASTM D-2492 <br />3 ASTM D512-67 <br />0.3 Standard Methods, page 391 <br />0.1 USDA Handbook 60, page 101 <br />10 EPA 600/4-79-020 <br /> Method 258.1 <br />0.1 USDA Handbook 60, page 105-6 <br />0.1 ASTM D174-73 <br />% 0.1 <br />% 0.1 <br />Barium ppm 1.0 <br />Chromium ppm 0.5 <br />Arsenic ppm 0.01 <br />Phosphorus <br />ppm 0.2 <br />ASTM D2492 <br />EPA 600/2-78-054, <br />page 51 <br />Methods of Soil Analysis <br />Methods of Soil Analysis <br />S~an~a~~u~lethodcswab <br />Soltanpour & Schwab <br />Watanabe and Olsen <br /> <br /> <br />NOV 2 3 foa~ <br />6-138 <br />