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3.5 <br />Seed in two passes at right angles to one another. Sow half the seed in each pass. Provide <br />markers or other means to assure that the successive seeded strips will overlap or be <br />separated by a space no greater than the space between the rows planted by the <br />equipment being used. Do not seed during windy weather. <br />1. In areas inaccessible to a drill seeder, broadcast seed by hand or with a spreader in two <br />opposite directions. Rake in seed after broadcasting. Do not broadcast or drop seed when <br />wind velocity exceeds 5 mph (8 km/h). <br />2. In non -irrigated grass areas, do not sow seed in tree or shrub watering rings. <br />3. Do not use wet seed or seed that is moldy or otherwise damaged. <br />B. Seed Rates: Refer to Table 02900-1 for specified rates. <br />C. Protect seeded areas with slopes exceeding 4:1 (Horizontal:Vertical) with erosion -control <br />blankets installed and stapled according to manufacturer's written instructions. <br />MULCHING <br />A. Hydromulch: Following drill seeding, mix specified tackifier, mycorrhizal inoculums, <br />and fiber mulch in water, using equipment specifically designed for hydroseed <br />application. Continue mixing until uniformly blended into homogeneous slurry suitable <br />for hydraulic application. <br />1. Apply slurry uniformly to all areas to be seeded in a two-step process. <br />a) Apply first slurry at the following application rate: <br />1) 1,500 lb/acre of 100 percent long stranded wood fiber mulch <br />2) 150 lb/acre of plantago psyllium based tackifier <br />3) 60 lb/acre of mycorrhizal inoculum <br />B. All hydroseed mixing shall be performed in a clean tank to minimize the introduction of <br />non -target species. The tank and hoses shall be rinsed thoroughly rinsed the satisfaction <br />of the Engineer. The hydroseeder must be equipped with a built-in continuous agitation <br />and recirculation system of sufficient operating capacity to produce homogeneous slurry, <br />and a discharge system that will apply slurry in the designated area at a continuous and <br />uniform rate. <br />C. The slurry preparation shall take place at the project site and shall be started by adding <br />water to the tank while the agitators are running at full throttle. Hydroseed applications <br />shall be applied in an arch stream using a fan shaped nozzle to prevent erosive spraying. <br />END OF SECTION 02900 <br />Reclamation, Topsoiling and Seeding February 2017 02900-4 <br />