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IV. BACKGROUND: Dopaco notified the U.S. Environmental Protection Agency (U.S. EPA) in 1987 that they were a hazardous waste generator. The facility has been located at 4545 Quantas Lane, Stockton, since November, 1987. From 1981 to 1987, the facility was located at 800 W. Church Street, Stockton. On March 28, 1990 this facility had an accidental spillage of cleaning solvent and printing pigments. A truck upset a 55 gallon drum of waste solvents and pigments causing it to rupture and drain the contents into the storm drain. William Snavely, R.E.H.S. of PHS-EHD investigated the complaint (#90-0484) and filed a Proposition 65 report (#90-075). The waste was pumped out of the storm drain by I.T. Services of Manteca, CA, under direction from the City of Stockton Municipal Utilities District. On October 10, 1990, PHS-EHD conducted a routine hazardous waste generator inspection. As a result of this inspection, violations of the California Code of Regulations were identified, including the presence of unlabelled drums containing hazardous waste, an unattended open drum containing hazardous waste, and the absence of health and safety training records. On November 22, 1991, PHS-EHD conducted a routine hazardous waste generator inspection and a follow up inspection was completed on September 22, 1992. No violations of Title 22, California Code of Regulations were noted. The follow up inspection was needed to verify the volume of hazardous waste generated during these time periods. The U.S. EPA conducted a Resource, Conservation, and Recovery Act (RCRA) Compliance inspection on May 20, 1992 to determine Dopaco's compliance with hazardous waste regulations. No RCRA violations were observed at the time of this inspection Because no RCRA wastes are generated, the U.S. EPA# CAD 982415804 was deactivated and Dopaco was issued a new CAL # 921143622. V. GENERAL DESCRIPTION OF FACILITY: Dopaco manufactures paperboard cartons, paperboard cups, and plastic cup lids for the fast-food industry. Roto-gravure printing presses are used to print designs onto paperboard with inks. Dopaco purchases water-based ink and mixes it with an extender and an alcohol/water mixture before using it for printing. The extender is composed of the same constituents as the ink, but does not contain any pigments. The alcohol/water mixture, which may include isopropyl alcohol, isobutyl alcohol, and n-propyl alcohol, is composed of approximately 80% water and 20% alcohol and is added to the ink in order to maintain the desired viscosity and color of the product. The final ink mixture used for printing is composed of 2