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or food residues risk rejection. If loads are clean and color sorted, the processor can use high percentages of recycled cullet in production, but mixed cullet can only make up about 10% of the feed stock, and contaminants like ceramic or rock can result in shutting down a furnace and landfilling its contents. There is a strong market for aluminum cans, and as a result, recycling rates are high. Other metals can be recycled but market prices vary. Tin cans and other scrap steel can be source separated or manually separated at transfer stations or disposal sites but market prices are low for this commodity. White goods bring poor prices and most dealers require that they be stripped of insulation, motors, refrigerant, and capacitors, since those materials are either non-recyclable with the metals or contain hazardous materials. Non-ferrous scrap metal brings good prices but must be stored in locked containers to prevent theft. The unincorporated area is currently doing very little with yard waste which can be composted. Residents can compost yard waste in back yards. However, for an effective program, yard waste should be collected separately at the curbside and composted by the County. It is unrealistic to expect to sell all of the compost that can be produced, but it should be possible to use it for County landfills and for State and County park and road projects, and to offer it for sale to the public and the agricultural community. Wood constitutes a significant portion of the commercial, industrial, and self-haul waste streams and is relatively easy to separate from other materials at disposal sites. The current market for scrap wood is as a fuel for industrial furnaces or co-generation facilities, where it replaces virgin fuels. The market for used tires is very limited and the Chapter 2 - Waste Generation 20