columns) command a high price and are regularly recycled, whereas dimensional lumber is not often reused (Falk and Green 1999). There are several potential advantages of reusing recycled lumber. First, a significant quantity of recycled lumber is derived from old-growth timber and may have a tighter grain structure. Second, recycled lumber is relatively dry, with less tendency to warp on the job site (Falk et al. 1999). Third, salvage yards sell recycled lumber at about 50% of retail lumber prices (Falk 2002). Disposal The Florida Administrative Code (FAC) allows the use of C&D debris facilities in addition to Class I, II and III landfills. Rule 62-701.200 (25) defines C&D debris as: * Discarded materials generally considered to be not soluble in water and non- hazardous in nature, including but not limited to steel, glass, brick, concrete, asphalt material, pipe, gypsum wallboard, and lumber, from the construction or destruction of a structure as part of a construction or demolition project or from the renovation of a structure, including such debris from construction of structures at a site remote from the construction or demolition project site. The term includes rocks, soils, tree remains, trees, and other vegetative matter (that normally result from land clearing or land development operations for a construction project), clean cardboard, paper, plastic, wood, and metal scraps from a construction project; * Effective January 1, 1997, except as provided in Section 403.707(13)(j), F.S., unpainted, nontreated wood scraps from facilities manufacturing materials used for construction of structures or their components and unpainted, non-treated wood pallets provided the wood scraps and pallets are separated from other solid waste