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Table 3877-3 Premium Topsoil Borrow <br />Requirement <br />Minimum <br />Maximum <br />Material Passing 2.0 mm (#10) Sieve <br />95% <br />-- <br />Clay <br />10% <br />25% <br />Silt <br />25% <br />60% <br />Sand & Gravel <br />25% <br />60% <br />Organic Matter <br />5% <br />15% <br />pH <br />6.0 <br />7.1 <br />Soluble Salts <br />-- <br />0.15 siemens/m <br />1.5 mmho/cm <br />