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1633 Terra Avenue <br />Inter•fTtountoln Lcborotorles, Inc. <br />Sheridan, Wyoming 82801 <br />SE11EfA COAL COMPANY <br />HAYDEN, COLORADO <br />December 4, 1996 <br /> pH <br /> Depths <br />lab No. location <br />138920 NGS-96-1 2.1 <br />1.36921 NGS-96-2 ).2 <br />138922 NGS-96-3 1.2 <br />138923 NGS-96-4 7.0 <br />Ef, Calcium Magnesium Sodium <br />mmhos/co aeq/1 meq/1 meq/I <br />@ 25°C <br />1.17 15.1 9.42 0.19 <br />0.48 2.50 1.96 0.52 <br />0.47 2.79 1.81 0.46 <br />0.59 3.85 2.24 0.56 <br />Tel. (307- 672-8945 <br />SAR Sand Silt Clay Texture <br /> t t t <br />0.23 32.6 45,0 22.4 LOAN <br />0.35 26.6 49.4 24.0 LOAM <br />0.31. 17.6 52.4 20.0 SILT LOAN <br />0.32 29.6 47.4 23.0 LOAN <br />Page 1 of 2 <br /> <br />Miscellaneous Abbreviations: SAR= Sodium Adsorption Ratio, CEC= Cation Exchange Capacity, ESP= Exchangeable Sodium Percentage, Exrh= Exchangeable, Avail= Available <br />