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<br />E. Mulching and Erosion Control Blankets <br />All seeded areas shall be mulched following seeding. Mulch shall be <br />applied not later than 24 hours after seeding. Mulching shall not be <br />done when wind velocity exceeds fifteen miles per hour. <br />Mulching procedures specified below shall be applied to seeded areas <br />according to their designation by slope steepness. Three slopes are <br />identified: <br />1. less than approximately 33% <br />2. approximately 33-60% <br />3. greater than 60% <br />On slopes less than approximately 33%, one of two mulching procedures <br />shall be used: <br />1. hay or straw mulch, crimped <br />2. hydromulch with tackifier. <br />On slopes between approximately 33 and 60%, as identified in Exhibit 3, <br />one of three mulching procedures shall be used: <br />1, hay or straw mulch with non-asphalt tackifier <br />2. hay or straw mulch with netting <br />3. hydromulch with tackifier. <br />On slopes greater than 60%, as identified in Exhibit 3, one of two <br />mulching procedures shall be used: <br />1. hay or straw mulch with netting <br />2. hydromulch with tackifier. <br />Any of the mulching procedures above which are used, shall be used <br />according to the specifications below. <br />1. Hay or straw mulch, crimped. <br />Hay or straw mulch shall be applied uniformly at a rate of two tons <br />per acre. Mulch shall be pest and weed free. Approximately 30 <br />percent by weight of the mulch material shall be ten inches in length <br />or longer. Rotted, caked, decayed or moldy material will not be <br />accepted. A mulch crimper shall be used to anchor the mulch into the <br />soil after the hay or straw has been spread. The crimper shall be <br />equipped with scrapers to keep the blades clean. Spacing of crimper <br />blades shall not exceed nine inches. On areas less than one acre, <br />crimping may be achieved by hand with a suitable tool, such as a <br />spade, on eighteen inch centers. <br />2. Hay or straw mulch with tackifier. <br />Hay or straw mulch shall be applied as in treatment number 1 above, <br />except for crimping. Anon-asphalt tackifier shall be applied <br />uniformly over the mulch at a rate of 120 pounds per acre or, in <br />accordance with manufacturer's recommendations. <br />-8- <br />