MAMMOTH CAVE NATIONAL PARK, CONTRACTING & PROPERTY MGT., P.O. BOX 7, MAMMOTH CAVE, KY 42259

56 -- RECYCLED PLASTIC OR COMPOSITE LUMBER PRODUCTS POC JOHN C. BEAVER, CONTRACTING OFFICER, (502) 758-2254 WEB: MAMMOTH CAVE NATIONAL PARK, maca_contracting@nps.gov. E-MAIL: MAMMOTH CAVE NATIONAL PARK, john_beaver@nps.gov. Mammoth Cave National Park will be constructing a raised boardwalk along portions of the cave tour route and will be using recycled plastic lumber for the decking and handrail material. Before selecting a specific recycled plastic lumber we are interested in reviewing samples, specifications, and literature from manufacturers or suppliers on their respective product(s). The decking material will likely be 2 x 8's and the handrails 2 x 6's. In analyzing the materials available we would like to know the feedstock composition used in the production of the lumber, i.e., amounts of HDPE, PTE, LDPE, waste wood, etc. In addition, some of the characteristics we are particularly interested in include skid resistance, potential expansion and contraction, potential warping, performance when exposed to moisture, strength, durability and workability. Price will also be a consideration. Approximately 600,000 visitors will use this walkway per year, in groups of up to 120 people. If possible, we would like to inspectsites where the products have been utilized for a walkway application. If such locations are available in south-central Kentucky or National Park units, please pass that information along with the product samples and literature. (0269)

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