_GENERAL DOCUMENTS - C1981017 (255)

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Client Name: CHEN-NORTHERN, INC. September 13, 1991 GLENWOOD SPRINGS, CO Sheet 15 of 26 Project No. : 90-909 Project Name: Mid Continent Mine Laboratory No. : 118958 Sample Name: GRAB 1211 DEPTH SUTEY EAST Sample Date: 08/15/91 Collected by: RICK THOMAS Time Sampled: None Given AVERAGE DATE PARAMETER VALUE ANALYZED SOIL CONSTITUENTS: Acid/Base Potential 22 tons/1000 tons 09/09/91 Calcium Carbonate 3.03 % 09/04/91 Cation Exchange Capacity 16 meq/100 gm 09/09/91 Electrical Conductivity Saturated Paste 2.19 mmhos/cm 09/04/91 Exchangeable Sodium Percent 5.6 % 09/09/91 Gypsum * 09/09/91 Neutralization Potential 30.3 tons/1000 tons 09/04/91 Organic Matter 6.36 % 08/29/91 pH Saturated Paste 6.6 S.U. 08/29/91 Saturation 35.8 % 08/29/91 Sieve Fraction <2mm 49.2 % 08/26/91 Sieve Fraction >2mm 50.8 % 08/26/91 Sodium Absorption Ratio 2.92 08/30/91 Solids, Combustible 10.3 % 09/04/91 Sulfur (Total Eschka) 0.27 % 09/05/91 Sulfur Pyritic as S 0.16 % 09/06/91 Sulfur Sulfate as S <0.01 % 09/06/91 Sulfur Organic as S 0.11 % 09/06/91 PARTICLE SIZE ANALYSIS: Sand 54.5 e 08/23/91 Silt 27.0 % 08/23/91 Clay 18.5 % 08/23/91 Texture, USDA SANDY LOAM 08/28/91 * None detected Chen-Northern, Inc. Consulting Engineers and Scientists