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141 �f Tank Area Closure Report Laura scudders Tracy, California Facility for Laura Scudders, Inc. 1.0 Introduction A On behalf of Laura Scudders, Inc. and their tank removal subcon- tractor, Precision Industries, Inc. , ROY F. WESTON, INC. (WES- TON) was asked to review all tank closure information and data �M< for the Laura Scudders facility located at 100 W. Valpico Road in Tracy, California (Figure 1) and to summarize the information in an effort to obtain final closure for the tank removal program. The intent 6f this report is to provide a concise summary of the. 4 tank removal efforts to be provided to the local regulatory agencies so that a determination as to the status of the facility, in regard to underground storage tanks, can be assessed. If the regulatory assessment indicates that no k environmental concerns regarding underground storage tanks exist, the facility tank closure will be considered complete. Precision Industries has removed three underground fuel storage tanks at the Tracy plant (Figure 2) . The first tank (Tank T2) ` was removed in September 1987. The remaining two tanks (TZ and T3) were removed in May 198q. For each of these tanks, a discussion of the tank closure activities and soil � < sampling chemical analysis results is presented below. All of the information discussed below has been previously submitted to ! ! the San Joaquin Local Health District. copies of this previously submitted data are contained in Appendices A and B for reference. All chemical analysis data is summarized in tabular form on Table 1. 2.0 Background 2.1 Tank T2 Tank T2 was a 10,000 gallon diesel storage tank located along the east side of the main plant building at the Laura Scudders Plant in Tracy, California. In .'august 1987, after discovering a possible tank line leak, Laura Scudders contacted Precision Industries to excavate and remove the tank. On August 18, 1987, a tank closure application was submitted to the San Joaquin Local ^ Health Department. The application was approved on August 25, 1987. In early September 1987, the tank (T2) (orginally designated tank 1 by Precision Industries) and associated product lines were removed. A singl:, soil sample (LS) was collected from beneath the tank bottom on September - Environmental Services laboratory for benzene, toluene, xylene and ethylbenzene (BTX&E) and Total Petroleum Hydrocarbons (TPH) .