2021-12-22_PERMIT FILE - C1981019A

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Physicochemical Analysis and Methods • pH, sat paste • Conductivity @ 25 C • Saturation • Texture • Ca (sat paste) • Mg (sat paste) • Na (sat paste) • SAR • Cation Exchange Capacity • Exchangeable Na • Exchangeable Sodium % • Se (hot water) • B (hot water) • NO3 as N (water) • Mo (NH4 oxalate) • As, Hg, Pb, Zn, Fe, and Mn (AB -DTPA Extractable) • NP as CaCO3 • Sulfur Forms in % • Acid Generation Potential (AGP), Acid Neutralization Potential (ANP) and Acid Base Potential (ABP) • AGP:ANP Sample Preparation Methods • Air Dry @ 34'C • NH4 oxalate • Crush and Pulverize • AB -DTPA extraction • Hot water extraction • Saturated Paste Extraction • Water extraction RULE 2 PERMITS USDA No.60 (21A) EPA Method M 120. 1 -meter,w/sat paste USDA No. 60 (2) ASTM D 422 Hydrometer EPA Method M6010 ICP EPA Method M6010 ICP EPA Method M6010 ICP calculation NH4Oac, USDA No. 60 (19) NH4Oac extractable, M6010B ICP Exchangeable Na/CEC SM3500-Se.0 EPA Method M6010 ICP EPA Method M353.2 -automated EPA Method M6010 ICP EPA Method M6010 ICP EPA Method M600/2-78-054 3.2.3 EPA Method M600/2-78-054 3.2.4 EPA Method M600/2-78-054 1.3 calculation USDA No. 1, 1972 ASA No. 9, Part 2 1965 M 74.2 USDA No. 1, 1972 ASA No. 9, Part 2, 1982 M3-5.2 ASA No. 9, Part 2 1965 M 80-3 USDA Handbook 66, M@ ASA No.9 M10-2.3.2 Exploration Test Boring Results Summary The physicochemical data from overburden sampling by Colowyo and Consol are provided in Exhibit 6, Item 6. The analytical data from Consol includes: pH, conductivity, saturation percentage, percent sand, silt, and clay, calcium, magnesium, sodium, sodium absorption ratio, boron, molybdenum, selenium, nitrate -nitrogen, arsenic, mercury, lead, zinc, iron, and manganese (AB -DTPA Extractable), acid - generating potential, sulfur forms, and total sulfur. The acid -generating potential (AGP) for these samples was calculated based on pyritic -sulfur percent. South Taylor/Lower Wilson — Rule 2, Page 16 Revision Date: 11/18/16 Revision No.: MR -163