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immediately beneath the Engleville Seam, contained total sulfur <br />• of 2.02 k of which .012 was pyritic and t.89 k was organic <br />sulfur. <br />The thinness of the Sopris Seam is such that it should be easily <br />blended with the overburden to prevent near surface placement. <br />The Lower Engleville Bench is not included in the operation plan <br />as a minable unit. <br />Engleville Seam <br />An analysis of an channel sample, Appendia 3, from an outcrop of <br />the Engleville Seam along Engleville Gulch showed a Total Sulfur <br />of 0.56, As Received Basis. The pyritic sulfur content was not <br />determined. <br />The Engleville Seam from hole 29-4 contained 1.26 $ total sulfur <br />of which pyritic sulfur was 0.12 k and 1.13 k was organic sulfur. <br />Special Analyses <br />None required by the Division. <br />Identification and Description of Potential Acidic, Toxic, and <br />Alkaline Producing Horizons <br />• The following discussion follows the order of presentation of <br />suspect level constituents used above. A stratlgraphic sequence <br />of presentation is impractical. <br />Interval: Hole 29-9: 70-65 feet (SAND) <br />This Snterval is comprised largely of loose sand C78k). It would <br />be less desirable near surface due to its erodibillty and <br />relative inability to support vegetation. The interval 50-70 <br />feet is marginal acceptable for sand content (68R sand). <br />Interval: Hole 29-9; 20-25 feet (CLAY) <br />The interval contains 55k clay, and carbonaceous material, that <br />may not be suitable to support vegetation. It minor thickness in <br />relation to the total overburden to be spoiled should allow <br />adequate mixing and mitigation of any potential impacts. <br />Interval: Hole 29-9; 86-100 feet (NITRATE) <br />The interval Ss marg(nally suspect for nitrate. Overlying strata <br />are well below the standard and with overburden mixing should not <br />cause environmental problems. <br /> <br />-10- <br />