Laserfiche WebLink
Table 6-3. Suitability Ratings for Overburden Material <br />LJ <br />i <br />6 <br />9 <br />4 <br />s <br />6 <br />9 <br />9 <br /> <br />v <br />5 <br />6 <br />3 <br />9 <br />3 <br />• 9 <br />9 <br />z <br />3 <br />3 <br />3 <br />3 <br />e <br />3 <br />z <br />r 1 <br />LJ <br /> <br /> De ree of Suitability <br />Overburden <br />Parameter <br />Good <br />Fair <br />Poor <br />pH 5.6-7.8 4.5-5.6 <br />7.8-8.4 <4.5 <br />>8.4 <br />Conductivity (oc) <br />mmhos/cm at 25 C Under 4 4-8 >8 <br /> <br />Saturation Percentage <br />25-80 <25 <br />>80 <br />Sodium Adsorption <br />Ratio (SAR) Under 6 6-10 >10 <br />ESP 0-5 5-15 >15 <br /> <br />Texture fsl, vfsl, <br />1, sl, <br />S11 lfs, scl <br />cl, sicl <br />is sic, sc, <br />c, s <br />Selenium 2 ppm or less greater than 2 ppm <br />Boron 8 ppm or less greater than 8 ppm <br />Molybdenum 5 ppm or less greater than 5 ppm <br />NH4-N + N03-N <50 ppm >50 ppm <br />(suspect level) <br /> <br />Acid-Base Potential Deficiencies <5 tons <br />CaCO3 Equiv./ <br />1000 3. Material Deficiencies >5 Tons <br />CaCO3 Equiv./ <br />1000 3. Material <br />Lead pH >6 <20 <br />pH <6 <15 pH >6 >20 <br />pH <6 >15 <br />Copper 40 ppm or less greater than 40 ppm <br />Cadmium 1 ppm or less greater than 1 ppm <br />Manganese 60 ppm or less greater than 60 ppm <br />Mercury 0.5 ppm or less greater than 0.5 ppm <br />Nickel 5 ppm or less greater than 5 ppm <br />Zinc 40 ppm or less greater than 40 ppm <br />Iron Unknown Unknown <br />18LM, 1977 <br />30ollhopf, D. J., et. al., 1977 <br />Montana DSL, 1977b <br />4SCS - USDA, n.d. <br />SSCS - USDA, 1971 <br />6SCS - USDA, 1978 <br />7Smith, et. al, 1974 <br />BUSDA, 1957 <br />9Wyoming DEQ, 1976 <br />6-19 <br />