Agenda - 11-09-1999 - 1 - Laserfiche WebLink

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generically useful as road base or alternative daily /weekly landfill cover, the local market is very limited by availability of high quality quarried stone and cheap cover material. We therefore assume that with a semi - automated processing facility, a maximum of 35% of the 43% that is inert (15% of all C &D waste) may be readily useful for some of the required weekly cover on the C &D debris working face or other on -site uses. We believe the road -base grade material that could be made from crushing the concrete, brick and rock could not at this time compete economically with the locally available quarried aggregate, nor would it be likely to meet most technical specifications for compaction, especially those for public road construction. Clean Wood Waste and Pallets The clean wood and lumber category represents an average 17 % by weight of the C &D waste. This does not include painted and treated wood for which there are no markets. Due to its bulky nature, wood takes up a disproportionate share of air space so diverting it has value above the market value of the end - product. Wood has proven current markets as reusable lumber, boiler fuel, mulch and similar low grade products. Potential future markets include particle board furnish or finger jointed lumber. The actual product mix produced for a boiler fuel or mulch would be determined by the specific market. We assume that an absolute maximum of 90 percent of this material could be diverted from landfilling for recycling, using a 10% tolerance level at the landfill for discards and uncapturable material. That is 15% of the C &D waste. There is almost no possibility of reaping net revenue from producing boiler fuel or mulch, once grinding and transportation costs are accounted for. However the fact that there are markets makes clean wood an attractive target for diversion. Pallets average 2% of our waste stream or 670 tons. They can be marketed as whole pallets or become part of the wood waste stream for mulch or boiler fuel if unsalable. We estimate we could capture a total about 90% of them. We are now capturing 7% of them through the salvage program. We realize $0.50 per pallet revenue for about 50% of pallets salvaged for reuse sized 40" x48" or grocery store types. The other sizes are given to the pallet re- manufacturer at no fee or price. Drywall Drywall averages 12% of the waste stream. There are limited but proven negative markets for this material if it is clean, unpainted and not contaminated with other construction waste. We assume about 50% of this could be available for recycling either source - separated or through a hand - separation process. The known market for separated dry wall is a negative market in which we would have to pay a tipping fee of at least $12 per ton plus our handling and transportation costs. 3