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Toble 3877 -3 <br />Premium Topsoil Borrow Requirement <br />Minimum <br />Maximum <br />Material Passing 2.0 mm ( #10) <br />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 />C Premium Topsoil Borrow <br />Current Topsoil Specification 3877 -3 (in MnDOT 2005 Spec Book) <br />Premium topsoil borrow for use as a plant growing medium in critical areas <br />and top dressing erosion stabilization mats shall be screened and pulverized <br />and meet the requirements of Table 3877 -3: <br />