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7.5.3 Other Non -Hazardous Recycled Materials Tires are manually separated from the refuse, and stockpiled in the Tire Trailer west of the tipping floor (Plate 20). When this trailer is full, it is removed by a commercial recycler. Yard waste, wood, branches, tree and bush trimmings, if, are stored in a bin adjacent to the "Z" wall before emptying at the wood/yard waste area south of the Recycling Center ( 8, Plate 22) if received in sufficient quantities and concentration to allow recovery. Construction and Demolition Waste (C&D), includes concrete, lumber, roofing materials, and other debris from construction and demolition activities. Such material waste may be retained on site for use in constructing roads, winter pads, or for other beneficial reuse. Engine blocks are sometimes dismantled on site for the recovery of specific components such as the starter motor and radiator. Dismantling of the engine block takes place over a lipped containment table specially designed to catch and contain oil which may drain from the engine. After removal from the engine block, components are placed in the appropriate recycling bins and taken offsite by a commercial recycler. Engine oil captured in the process of dismantling is deposited in the Station's spent oil tank which is periodically emptied by a commercial recycler. Appliances, including refrigeration and non -refrigeration units, such as washers and dryers, contain materials that must be removed by a Certified Appliance Recycler (CAR) prior to recycling. If an appliance arrives with a CAR certification indicating all materials requiring special handling have been properly removed, then the appliance is placed in the "tin bin" (low -value steel and mixed metal). If the appliance does not have documentation that these materials have been properly removed, then the appliance is staged on site until a CAR contracted with the County can remove the required materials from the appliance, after which these appliances are also placed in the "tin bin". Precious metals (copper, aluminum, chrome, etc) are placed in a designated bin. When the bin is full, the materials are taken off-site by a commercial recycler. Agricultural Plastics, such as plastic agricultural pesticide container are occasionally received at the NCRC&SL during agricultural pesticide container collection events held periodically. North County RC&SL Page 58 of 69 Public Works/Solid Waste Joint Technical Document County of San Joaquin — February 10, 2010