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0 0 <br />6ETTLER-RYAN INC. <br />September 23, 1998 <br />Mr. David J. Camille <br />Tosco Marketing Company <br />2000 Crow Canyon Place, Suite 400 <br />San Ramon, California 94583 <br />Subject: Soil Disposal, Tosco 76 Branded Facility No. 11194, 2375 Tracy Boulevard, <br />Tracy, California <br />Mr. Camille: <br />Gettler-Ryan Inc. (GR) has prepared this letter to document the sampling and disposal of soil <br />generated during previous subsurface investigation work at the subject site. The soil sampling and <br />chemical analyses were conducted to comply with the local regulatory agency requirements for <br />proper disposal of the potentially hydrocarbon -impacted soil. <br />On May 25, 1998, GR collected a composite soil sample from three drums of soil at the site. <br />Individual grab samples taken from depths of approximately 1 to 2 feet into two of the drums. <br />The individual samples were collected in two-inch diameter, clean brass tubes that were sealed <br />with Teflon -lined plastic caps and placed in an ice chest with blue ice for preservation. The <br />samples were accompanied by properly executed Chain of Custody documentation for transport <br />to the laboratory for analysis. The samples were submitted to Sequoia Analytical Laboratory in <br />Redwood City, California for compositing and analysis as sample Comp DC. <br />Comp DC was analyzed for total petroleum hydrocarbons as gasoline (TPHg) by Environmental <br />Protection Agency (EPA) Method 5030/modified 8015, benzene, toluene, ethylbenzene, and <br />xylenes (BTEX) by EPA Method 8020, and total lead by EPA method 6010. The results of the <br />soil analyses are summarized in Table 1. Copies of the laboratory analytical report and the Chain <br />of Custody documentation are attached to this report. <br />The three drums of soil were profiled for disposal at Forward Incorporated's (Forward) Manteca, <br />California Landfill, an approved Class II/III disposal facility. Based on the concentrations of the <br />constituents analyzed in Comp DC, Forward issued approval number 715721 on June 19, 1998, <br />for disposal of the three drums. On June 23, 1998, Denbeste Transportation, Inc. removed the <br />drums and transported them to Forward. <br />140197.02 <br />6747 Sierra Court, Suite J Dublin, California 94568 • ( 9 2 5 ) 551 -7555 <br />