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<br />Table 99 <br />Chemical Analysis of Gravel <br />• <br /> <br /> less Than Less Than <br /> 2.0 mm 1/4 inch <br /> Ground Crushed <br />pH 7.9 8.0 <br />E.C. 500 umho/cm 500 umho/cm <br />Saturation % 19.2% 15.0% <br />ESP 0.2 0.2 <br />Ca 2.5 meq/1 2.3 meq/1 <br />Mg 2.0 meq/1 1.4 meq/1 <br />Na 1.5 meq/1 1.6 meq/1 <br />SAR 1.0 1.1 <br />CaC03% 0.8% 0.6% <br />NO3-N 3.0 ppm 2.3 ppm <br />rBi4-N 8.0 ppm 11.0 ppm <br />As 0.02 ppm 0.04 ppm <br />K 33.4 ppm 32.0 ppm <br />P 4.1 ppm 6.5 ppm <br />Ba 43.1 ppm 39.8 ppm <br />Cr 40.8 ppm 36.1 ppm <br />V 6.1 ppm 5.6 ppm <br />B 0.13 ppm 0.06 ppm <br />Co 0.66 ppm 0.46 ppm <br />Cd 0.140 ppm 0.128 ppm <br />Fe 10.44 ppm 9.46 ppm <br />Pb 0.43 ppm 0.36 ppm <br />Mn 3.5 ppm 5.2 ppm <br />Zn 0.38 ppm 0.24 ppm <br />Ni 0.19 ppm 0.01 ppm <br />Hg 0.001 ppm 0.001 ppm <br />Se 0.01 ppm 0.01 ppm <br />Mo 0.40 ppm 0.30 ppm <br />780-147 <br />