1988-04-11_PERMIT FILE - C1981008A (4)

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Table 6-7 Chemical and Physical Properties of Interburden Material (Strata Between the Upper and Lower Dakota Coal Seams) for Phase I Samples Collected at Nucla Mine, November 1986. Parameter Phase I Hole Number Units 1C 2C 3C 4C 695 697 775 Mean SD 2 pH 6.9 4.4 7.1 4.2 6.5 6.8 7.0 6.1 1.3 EC3, mmhos/cm 1.2 6.9 1.2 0.8 3. 1 2.3 2.7 2.6 2.1 Sand, % 49. 1 55.8 46.0 42.6 42.1 52.8 68.7 51.1 9.3 Silt, % 29.7 25.1 33.0 33.9 36.7 30.6 18.5 29.6 6.1 C14y, % 21.2 19.1 21.0 23.5 21.2 16.6 12.8 19.3 3.6 SP , % 57.7 55.4 51.2 55.0 48.2 46.6 38.5 50.4 6.6 Ca, meq/1 7.3 25.3 7.6 3.5 23.9 12.7 14.9 13.6 8.4 Mg, meq/1 7.7 48.9 7.8 2.5 16.7 11.7 16.8 16.0 15.4 Na , meq/1 1 .8 2.7 2.3 1.8 2.4 1.8 4.7 2.5 1.0 SAR 0.6 0.5 0.9 1.2 0.6 0.5 1.2 0.8 0.3 Q, Total N, ppm 3.0 8.5 2.0 8.0 * * * 5.4 3.3 Total S, % 0.38 0.62 0.44 0.21 0.70 0.41 0.23 0.43 0. 18 ABP 7.0 -19.2 8.3 8.3 -0.7 16.3 19.6 5.7 12.8 B, ppm 0.9 2.0 0.6 0.6 * * 0.3 0.9 0.7 Cd, ppm 0.05 0.05 0.05 0.06 * * 0.05 0.05 0.00 Cu , ppm 1.7 1.2 1.2 1.3 1. 1 1.8 1.7 1.4 0.3 Fe, ppm 200.4 211.1 242.5 301.2 * * 370.0 265.0 70.6 Pb, ppm 5.2 1.0 3.7 1.0 * * 3.2 2.8 1.8 Mn, ppm 3.0 65. 1 3. 1 6.3 * * 4.2 16.3 27.3 Fig, ppm 0.04 0.02 0.02 0.12 * * * 0.05 0.05 Mo, ppm 1 .2 1.8 1.0 1.0 1.2 1.0 1.0 1.2 0.3 Se, ppm 0. 1 0.1 0. 1 0.1 0.01 0.01 0.01 0.1 - Zn, ppm 3.0 3. 1 2.7 1.2 8.4 5.7 9.2 4.7 3. 1 Ni , ppm 2.6 1.5 1.5 0.8 1.5 1.3 1.5 1.5 0.5 N K, ppm 187. 1 79.7 180.2 103.9 173.0 158.8 92.7 139.3 45.5 a. P, ppm 2.4 6.1 3.8 15.6 0.9 1.1 1. 1 4.4 5.3 1 For drill hole location, see Exhibit 6-3A, Overburden Sample Locations 2 SO - Standard Deviation O1 3 EC - Electrical Conductivity 4 SP - Saturation Percentage 5 ABP - Acid Base Potential ; Units are tons of Calcium Carbonate required per acre furrow slice * These analyses were not performed. y* ',amnles were contaminated by drilling grease.