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2.4.2 California Environmental Protection Agency. Department of Toxic Substances Control (DTSC). On July 22, 1985, Cal Cedar applied for a variance regarding the transportation of 5 gallons of asbestos fiber contained in a metal box. The DTSC (formerly known as the Department of Health Services, Toxic Substance Control Division) granted a one-trip variance for hauler registration and vehicle inspection requirements for the disposal of the asbestos fiber. (13) There have been no complaints registered with the DTSC, and there has been no further DTSC involvement with the site (14, 15). Regional Water Quality Control Board (RWQCB), Central Valley Region. The RWQCB became involved with the Cal Cedar site in December 1990, when they received an "unauthorized release report" from the San Joaquin County Local Health District. The RWQCB 's file indicates that a soil sampling effort was conducted during the removal of underground gasoline tanks in December 1990. Sample results indicated contamination of soil around the underground storage tanks. No further action or involvement is being taken by this department. (16) 2.4.3 San Joaquin County Office of Emergency Services (OES). In 1987, Cal Cedar submitted a disclosure of hazardous materials on site. In 1989, Cal Cedar submitted a hazardous material business plan and the OES conducted a preliminary inspection. No violations were recorded during this inspection. Cal Cedar submits biennial reports to the OES. There is no record of any emergency responses for spills on site. (17) 2.4.4 San Joaquin County Local Health District (SJLHD), Environmental Health Department. In 1987, the SJLHD began performing precision testing to monitor the integrity of the underground storage tanks on site. The underground storage tanks were found to be intact. There are no reports indicating leakage from these tanks. One 5,000-gallon underground gasoline storage tank was excavated and removed from the site. (18) On March 15, 1989, the SJLHD inspected the site and located a solid waste container (containing wet ash with a high pH concentration from the scrubber unit) that was discharging liquid into the storm drain. The solid waste container was relocated by Cal Cedar due to the discharge of liquid waste into the storm drain. Two liquid waste samples were collected by SJLHD and taken to Canonie Environmental on March 17, 1989. Analytical results indicate a pH of 10.2 for liquid from a gutter leading to the sewer drain, and a pH of 12.5 for liquid in a 5-gallon collection container beneath the waste container. (19) In November 1990, two 5,000-gallon and two 12,000-gallon underground gasoline storage tanks were excavated and removed. (18) Soil samples indicated the presence of benzene, toluene, xylene, and ethyl benzene underneath the tanks. All analytical methods were designated EPA methods as described in the EPA SW-846, Third Edition. (20) The SJHLD has the site on a low priority Contaminated Site List and plans to pursue remedial action in the future. There was no regulatory involvement with the site prior to 1987. (18) 2.4.5 City of Stockton, Municipal Utilities Department (MUD). The MUD's involvement began in May 1975 when the pump station at Orange and Sonora streets was filled with oil and wax from Cal Cedar. In December 1976, a storm line near the site was plugged with wax. In January 1987, a storm line on Washington Street had a 1-inch-thick layer of wax. (21) Wax build- up within the city's storm lines has been removed by Cal Cedar (8, 22). a PA California Cedar Products-W (F) • 5/93 6 Printed on 50% recycled paper. Qe