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during the hot summer months. <br /> • During the wet season on slopes steeper than 3H:1V with more than <br /> 10 feet of vertical relief. <br /> Mulch may be applied at any time of the year and must be refreshed <br /> periodically. <br /> • For seeded areas mulch may be made up of 100 percent: cottonseed <br /> meal; fibers made of wood,recycled cellulose, hemp, kenaf; compost; <br /> or blends of these. Tackifier shall be plant-based, such as guar or alpha <br /> plantago, or chemical-based such as polyacrylamide or polymers. Any <br /> mulch or tackifier product used shall be installed per manufacturer's <br /> instructions. Generally,mulches come in 40-50 pound bags. Seed and <br /> fertilizer are added at time of application. <br /> Design and For mulch materials, application rates, and specifications, see Table 4.1.8. <br /> Installation Always use a 2-inch minimum mulch thickness; increase the thickness <br /> Specifications until the ground is 95% covered (Le. not visible under the mulch layer). <br /> Note: Thickness may be increased for disturbed areas in or near sensitive <br /> areas or other areas highly susceptible to erosion. <br /> Mulch used within the ordinary high-water mark of surface waters should <br /> be selected to minimize potential flotation of organic matter. Composted <br /> organic materials have higher specific gravities(densities) than straw, <br /> wood, or chipped material. Consult Hydraulic Permit Authority (HPA) for <br /> mulch mixes if applicable. <br /> Maintenance • The thickness of the cover must be maintained. <br /> Standards • Any areas that experience erosion shall be remulched mid/or protected <br /> with a net or blanket. If the erosion problem is drainage related, then <br /> the problem shall be fixed and the eroded area remulched. <br /> Voltaire H—Construction Slot mnvatet Polhifion Prevention-Augtist 2012 <br /> 4-20 <br />