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Current Topsoil Specification 3877-3 (in MnDOT 2005 Spec Book) <br />C Premium Topsoil Borrow <br />Premium topsoil borrow for use as a plant growing medium in critical <br />areas and top dressing erosion stabilization mats shall be screened and <br />pulverized and meet the requirements of Table 3877-3: <br />Toble 3877-3 <br />Premium Topsoil Borrow Requirement <br />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 />New Topsoil Specification 3877-3 (MnDOT 2014 Spec Book) <br />A Common Topsoil Borrow <br />Provide Common topsoil borrow ranging from a silt loam, loam, clay loam, sandy clay loam, or <br />sandy loam soils for general use as a turf growing medium and in accordance with Table 3877-1. <br />Common Topsoil Borrow is a blend of Type A and/or Type B horizon soils defined in the soil profile <br />section of the Grading and Base Manual, and is similar to topsoil found adjacent to the project. <br />Table 3877-1 <br />Common Topsoil Borrow <br />Requirement <br />Range <br />Test Method <br />Material Passing the 3/4 in [19 mm] <br />100 % <br />ASTM D 422 <br />Material passing No. 4 [4.75 mm] <br />>_ 85% <br />— <br />Clay <br />5% – 40% <br />ASTM D 422 <br />Silt <br />10%– 60% <br />ASTM D 422 <br />Sand <br />20%– 65% <br />ASTM D 422 <br />Organic matter <br />3% – 20% <br />ASTM D 2974 <br />pH <br />6.1-7.8 <br />ASTM G 51 <br />