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r arc v u i i <br />from buckets mounted on tractors, which then exit the site by driving over rings already filled with J5 6 39 <br />sand. The sand is then spread laterally from the pile using flat bottomed shovels and/or wide "asphalt <br />rakes" to fill the rings. A stiff bristled broom should be used for final "finishing" of the sand. The sand <br />must be "compacted" by using water from hose, irrigation heads, or rainfall, with the finish grade no less <br />than the top of rings and no more than 6 mm (0.25") above top of rings. <br />3.04 Installation of Grass <br />(Choose one paragraph below to meet grass installation method desired.) <br />0 (Preferred method) Hydroseeding/hydro-mulching - A combination of water, seed and fertilizer <br />are homogeneously mixed in a purpose-built, truck -mounted tank. The seed mixture is sprayed onto the <br />site at rates shown on plans and per hydroseeding manufacturer's recommendations. Coverage must be <br />uniform and complete. Following germination of the seed, areas lacking germination larger than 20 cm <br />x 20 cm (8" x 8") must be reseeded immediately. Seeded areas must be fertilized and kept moist during <br />development of the turf plants. <br />B. Install thin sod directly over sand filled rings, filled no higher than the top of the rings. Sod <br />strips should be placed with very tight joints. Sodded areas must be fertilized and kept moist during root <br />establishment (minimum of 3 weeks). Sodded areas must be protected from any traffic, other than <br />emergency vehicles, for a period of 3 to 4 weeks, or until the root system has penetrated and established <br />well below the Grasspave2 units. <br />C. Install grass seed at rates per grass type. A light "dusting" of commercial topsoil mix, not to <br />exceed 1/2" (25 mm) can be placed above the rings and seed mix to aid germination rates. Seeded areas <br />must be fertilized and kept moist during development of the turf plants. <br />3.05 Protection <br />(Choose one paragraph below to match grass installation method.) <br />A. Seeded areas must be protected from any traffic, other than emergency vehicles, for a period of 4 <br />to 6 weeks, or until the grass is mature to handle traffic. <br />B. Sodded areas must be protected from any traffic, other than emergency vehicles, for a period of 3 <br />to 4 weeks, or until the root system has penetrated below the Grasspave2 units. <br />3.06 Cleaning <br />A. Remove and replace segments of Gtasspave2 units where three or more adjacent rings are broken <br />or damaged, reinstalling as specified, so no evidence of replacement is apparent. <br />B. Perform cleaning during the installation of work and.upon completion of the work. Remove all <br />excess materials, debris, and equipment from site. Repair any damage to adjacent materials and surfaces <br />resulting from installation of this work. <br />EMD OF SECTION <br />If you have any questions regarding this specification, please call Invisible Structures, Inc. 1-800-233- <br />I510, overseas call 303-233-8383. <br />6/25/2007 <br />