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tested in June, 1991, and determinednot to be ignitable <br /> (Attachment C) . L <br /> Dopaco also characterized its press wat.,�r waste as corrosive <br /> because of the presence of toluene in a soap called Varn, a <br /> product which has not been used at Dopaco for about a year and a <br /> half. Biodegradable cleaners, Orange Citrus Crazy Clean and TSR <br /> 375 and 880, are noncorrosive products currently used at the <br /> facility. <br /> Although U. S . EPA did not observe any RCRA regulated <br /> hazardous waste at the facility, Dopaco provided documentation <br /> indicating that RCRA regulated hazardous waste had been generated <br /> at the facility as recently as 1991. The Material Safety Data <br /> Sheet (MSDS) for the water-based inks (Attachment D) and the <br /> results of the California Waste Extract Test (Attachment E) <br /> indicate that the press water waste generated at the facility is <br /> not a RCRA regulated hazardous waste. However, the results of <br /> analyses performed in June, 1991, indicated the presence of <br /> toluene in the press water waste (Attachment F) . According to <br /> Ken Villani, a varnish containing toluene had been used in a <br /> research and development project at the facility in March, 1991. <br /> Instead of being coated with only polyethylene, the cups in the <br /> project were coated with the varnish and a smaller amount of <br /> polyethylene. According to Villani, the facility decided not to <br /> use the varnish. <br /> The results of the analyses also indicated the presence of <br /> acetone in the press water waste. Villani stated that acetone + <br /> had previously been used in the pre-press area to clean metal <br /> plates but has not been used at the facility since June, 1991. <br />