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• Table 6-2. Overburden Analysis Procedures, Instrumentation <br />and References Used by Peabody Central Lab, <br />Freeburg, Illinois, <br />March 1980 <br />Parameter Unit Procedure Instrumentation Reference <br /> <br />Acid-Base % <br />Potential <br />Conductivity nmhos/cm <br />Saturation % <br />Percentage <br />Particle Size % <br />Analysis <br />Texture <br />Water Soluble <br />Ca, Mg, Na <br />• <br />SAR <br />Exchangeable <br />Na, Ca, Mg <br />ESP <br />Orion Glass <br />Electrode <br />Hydrogen <br />Peroxide <br />Method and <br />Titration <br />Conductivity <br />Bridge <br />Volumetric <br />Hydrometer <br />Sieve <br />USDA Textural <br />Chart <br />meq/1 Saturated <br />Paste Extract <br />Atomic <br />Absorption <br />Calculation <br />Fran Water <br />Soluble Cations <br />Orion Ionizer <br />Model 407A <br />Titration <br />Instruments <br />YSI Wheatstone <br />Bridge Model 31 <br />Mohr Pipet <br />Hydrometer <br />Sieve <br />Perkin-Elmer <br />Models 306, <br />403, 5000 <br />ppm Ammonium Centrifuge <br />Acetate Bausch & Lomb <br />Extraction Spectrophotometer <br />Model 700, R710 <br />% Calculation <br />From Exchange- <br />able Cations <br />USDA Handbook 60 <br />Method (21a), <br />p. 102, 1969. <br />EPA 670/2-74-070 <br />Mine Spoil <br />Potential for Soil <br />and Water Quality, <br />p. 48, 49. <br />USDA Handbook 60 <br />Method (4a), <br />p. 89, 1969 <br />USDA Handbook 60 <br />Method (27b), <br />p. 107, 1969. <br />ASA Monograph #9 <br />p. 562-567, 1965. <br />USDA Handbook #9 <br />p. 209, 1951. <br />Extraction-USDA <br />Handbook 60, <br />Method (3a), <br />p. 84, 1969. <br />Analysis-AA. <br />USDA Handbook 60 <br />p. 26, 1969. <br />Mont. State Univ. <br />P & S Dept. Lab. <br />Man. p. 22, 1973. <br />USDA Handbook 60 <br />Method (20a), <br />p. 101, 1969. <br />Table 6-2 continued on next page. <br />6-17 <br />