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<br />3877 <br />Topsoil Borrow <br /> <br />3877.1 SCOPE <br /> <br />This Specification covers topsoil material used as a medium for establishing and sustaining healthy plant growth. <br /> <br />3877.2 REQUIREMENTS <br /> <br />Topsoil material furnished under this Specification shall be obtained from the soil horizons normally designated as "A" or <br />"B" as defined by the Soil Science Society of America, or shall be obtained from alluvial deposits. The material shull meet <br />the requirements given herein for the several classifications defined. <br /> <br />A Topsoil Borrow <br />Topsoil borrow for general use as a turf growing medium shall meet the requirements Of Table 3877-1: <br /> <br />Material Passing 2.00 mm (#10) Sieve <br />Clay <br />Silt <br />Sand & Gravel <br />Organic Matter <br />pH <br /> <br />TABLE 3877-1 <br />TOPSOIL BORROW REQUIREMENTS <br /> <br />11iqinmm <br />85% <br />5% <br />10% <br />10% <br /> <br />.~ <br /> <br />3% <br />6.1 <br /> <br />30% <br />70% <br />70% <br />20% <br />7.8 <br /> <br />B Select Topsoil Borrow <br /> <br />Select topsoil borrow for use as a plant growing medium in designated areas, such as landscape beds, shall meet the <br />requirements of Table 3877-2: <br /> <br />TABLE 3877-2 <br />SELECT TOPSOIL BORROW REQUIREMENTS <br /> <br />Exchangeable Potassium <br /> <br />tylinimum <br />90% <br />5% <br />10% <br />20% <br />3% <br />6.1 <br />30 kg/hectare <br />(26.8 Ibs/acre) <br />150 kg/hectare <br />(133.81bs/acre) <br /> <br />MaAinmm <br /> <br />Material Passing 2.00 mm (#10) Sieve <br />Clay <br />Silt <br />Sand & Gravel <br />Organic Matter <br />pH <br />Extractible Phosphorous <br /> <br />30% <br />70% <br />70% <br />20% <br />~ 7.5 <br /> <br />Soluble Salts <br /> <br />0.15 siemens/m <br />(1.5 mmho/cm) <br /> <br />45 <br />