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<br />COST <br />CM <br />Material Casts <br />Practical Appraa~for Effative E & S Conuol - 80 <br />This is the actual cost of the material, including shipping costs to the site. In <br />order to evaluate materials against other dissimilar products (i.e. hydraulic <br />mulches vs blankets, dry straw mulches vs soil sealants), the costs are related to <br />area. <br />For example, rather than give the cost of recycled paper mulch per ton, the cost <br />is converted into a per acre or per square foot cost: <br />Paper mulch <br />ShiPP~g <br />Application rate <br />CM <br />or <br />or <br />_ $200.00/ton <br />_ $ 20.00/ton <br />= 2 tons per acre <br />= 5440.00 per acre <br />= S .09 per sq yd <br />= S .O1 per sq ft <br />Another example can be given for erosion control blankets: <br />Straw blanket <br />ShiPP~g <br />Application Rate <br />CM <br />or <br />or <br />CA <br />_ $ 33.00 per roll <br />_ $ 3.00 per roll <br />= 80.67 rolls per acre <br />= S2,904.12 per acre <br />= S .60 per sq yd <br />= 5 .54 per sq ft <br />Field Note: Hydraulic applications are usually estimated on a per acre or <br />square foot basis; rolled products on the orherhand are estimated <br />ort a square yard basis. For comparison purposes, the same unit <br />of area measurement should be used. <br />Add-oas <br />This variable reflects the costs associated with additional materials necessary to <br />install an erosion control product. e.g. staples or geotextile pins for rolled <br />products; tackifier or bonding agent for blown straw mulch or rebar for <br />geotextile confinement systems. These costs should be calculated in the same <br />unite as the material costs. <br />O 1995 IECA <br />