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Attachment B <br />3877C Premium Topsoil Borrow <br />Premium topsoil borrow for use as a plant growing medium in critical areas and top dressing erosion stabilization mats shall <br />be screened and pulverized and meet the requirements of Table 3877 -3: <br />TABLE 3877 -3 <br />PREMIUM TOPSOIL BORROW REQUIREMENT <br />Minimum Maximum <br />Material Passing 2.00 mm ( #10) Sieve 95% <br />Clay 10% 25% <br />Silt 25% 60% <br />Sand & Gravel 25% 60% <br />Organic Matter 5% 15% <br />pH 6.0 7.1 <br />Soluble Salts 0.15 siemens /m <br />(1.5 mmho /cm) <br />