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• 0 <br /> IV. BACKGROUND: <br /> The facility was first opened in 1986. The first hazardous waste inspection was <br /> conducted by Jaime Favila, PHS-EHD, in August, 1989. Local hazardous waste <br /> generator fees are current at the site and the facility is categorized as a hazardous <br /> waste generator producing greater than 5 tons and less than 25 tons of hazardous <br /> waste per year. In 1989, the site generated more than 25 tons and less than 50 <br /> tons of hazardous waste (see hazardous waste activity section). <br /> V. GENERAL DESCRIPTION OF FACILITY: <br /> E. R. Carpenter Company is located at 17100 S. Harlan Road, south of Louise <br /> Avenue and east of Interstate 5 in Lathrop, CA. The facility has been operating <br /> since 1986. E. R. Carpenter produces a variety of foam products, including carpet <br /> padding, seat cushions, and flotation devices. <br /> VI. HAZARDOUS WASTE ACTIVITY DESCRIPTION: <br /> Foam production of varying consistencies is performed in the southwest corner of <br /> the plant on one production line. The different products are manufactured by <br /> varying the chemical combinations of isocyanate(-NCO), polyol (-OH), and water. <br /> The more water used in the foam formula, the greater the urea formation and the <br /> more rigid the foam. Blowing agents, like CFC-11 or methylene chloride, are used <br /> to further reduce foam density. <br /> No hazardous waste is generated in the manufacturing process. However, during <br /> the cleanup process, methylene chloride is used to clean the mixing manifold after <br /> very rigid foam production (air is used to clean the manifold after foam production <br /> of less dense products due to a shorter chemical reaction or set-up time). Using <br /> air instead of methylene chloride to clean the manifold and nozzles has reduced <br /> the amount of hazardous waste generated to less than 25 tons per year. <br /> Additional hazardous waste is generated in the truck maintenance area and in <br /> routine facility maintenance operations. Trichloroethane is sparingly(150 gallons) <br /> used to clean equipment. Hydraulic fluid waste was generated one time due to a <br /> small spill. Two 55 gallon drums were manifested off site in March 1992. Facility <br /> waste paint/solvent is also generated, but has not yet been manifested off site. <br /> Methylene chloride is a listed R.C.R.A_ waste identified as U080. The other <br /> wastes are non-R.C.R.A. <br /> 2 <br />