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• TABLE 5 <br />criteria for Evaluating Overburden, Coal, lUnderburden, <br />end Regraded Spoil Suitability , <br />Yoast Permit Area <br /> Marginally Unsuitable Except <br /> Parameter Suitable Suitable Yith Amelioration <br /> pH >5.53 5.0-5.45 <5.0 <br /> <br /> f8.5 8.6-9.0 >9.0 <br /> 6 ~ <br /> Salinity (mmhos/cm) t8 9-12 >12 <br /> Saturation <858 X85 <br /> Percentage (X) >25 525 <br /> 9 10 11 <br /> Sodium Adsorption 511 12 18 >1B <br /> 10 11 <br /> Ratio 514 15-22 >22 <br /> 12 73 13 14 <br /> Particle Size ls, sl, 1, c, se, e, se, sic, <br /> (Texture) sil, ael, cl sic, si, with 50X c <br />• sicl s M-LO s <br /> 15 15 <br /> Boron (ppm) 0.5-5 <0.5 >5 <br /> Molybdenum (ppm)16 01.017 >1.018 <br /> 19 0 <br /> Selenium (ppm) 60.15 >0.15? <br /> 27 22 <br /> Nitrate Nitrogen (ppm) 10-50 50-60 >60 <br /> Acid-gase PotentieL 6523 >5 <br /> 24 <br /> Manganese (ppm) 1-70 <1 >70 <br /> 25 <br /> Iron ( <br />ppm) 5-300 <5 >300 <br /> 26 <br /> Zinc ( <br />Ppm) 1-70 <1 >70 <br /> 26 <br /> Copper (ppm) 0.2-30 <0.2 >30 <br /> 27 <br /> Nickel (ppm) <2.0 2-20 >20 <br /> Cadmium (ppm) 528 >5 <br /> 29 23 <br /> Lead (ppm) <10 10-100 >100 <br />• Phosphorus (ppm) >330 0-3 <br /> 37 <br /> Potassium (ppm) >75 0-75 <br /> 25 Revised 03/01/95 <br />