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Table 4-3. Topsoil and spoil material analysis comparisons Cor plant growth <br />suitability at Trapper Mine (1985-1989), vs 1991 Ashmore pit spoils. <br /> Topsoil Spoil 1991 Ashmore <br /> Weighed x (1) Weighed x (2) pit x (3) <br /> <br />Parameter (4) <br />pH (standard units) 7.24 7.38 7.38 <br />Electrical Conductivity (mmhos/cm) 0.84 1.98 2.43 <br />Calcium Carbonate (%) 0.94 5.67 5.88 <br />Organic Matter (%) 3.80 4.08 5.32 <br />Nitrate 21.79 7.37 11.42 <br />Phosphorus 14.36 1.47 1.06 <br />Potassium 268.71 102.80 134.67 <br />Zinc 1.97 6.56 8.42 <br />Iron 36.69 32.02 28.80 <br />Manganese (Mn) 15.79 11.85 8.93 <br />Copper 2.88 4.80 4.89 <br />Selenium 0.017 0.09 0.05 <br />Calcium (meg/I in sat ext.) 6.09 13.86 22.38 <br />Magnesium (meg/1 in sat ext) 2.21 11.85 15.00 <br />Sodium (meg/1 in sat em.) 0.48 2.06 3.83 <br />S.A.R. (-) 0.25 0.65 0.85 <br />%Saturation 42.64 42.46 43.33 <br />Texture Clayey loam Clayey loam Clayey loam <br />• <br />%Sand 33.55 33.38 34.17 <br />% silt 34.64 30.71 28.50 <br />% Clay 31.79 35.94 37.33 <br />Mercury (mg/kg) 0.05 0.08 0.14 <br />Flourine 0.14 0.40 1.41 <br />%TotalSulfur 0.03 0.11 0.14 <br />Acid-Base Potential (-) +10.9 +52.43 +54.32 <br />Motybdenum 0.015 0.079 - <br />Boron 0.10 0.35 - <br />K (meg/I in sat ext.) 0.62 0.50 0.53 <br />(1) A, B, C, D and E pit topsoil 1985-1989. <br />(2) B, C, D and E pit overburden 1985-1989. <br />(3) A pit spoils only (1991). <br />(4) ppm unless otherwise deno[ed. <br />WA(b 7A2 <br />[CM~\9IREPT41 <br /> <br />Table 4-3 <br />