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3.0 CHEMICAL TESTING Soil samples collected at tcn-foot intcr�als from the boreholes will be analyzed for TPH as gasoline with BTXE distinction using EPA Method 801518020, TPH as diesel using EPA Method 3550, and organic, lead using the, California Department of Health Scr%ices Method (CDHS) California fuel's soil analysis rationale is summarized in Table 3-1 The groundwater samples will be analyzed for TPH as gasoline with BTEX distinction using EPA Method 801518020, TPH as diesel using EPA Method 3510, and organic lead using the CDHS method California Fuel's groundwater analytical program is summarized in Table 3-2 r Table 3-1. Soil Chemical Analyses to be Performed at the California Fuels Cardlock Station located at 2402 Pacific Avenue, Stockton CA. Analysis Test Method Rationale Organic Lead CDHS To detect leaded hydrocarbons in soils C-:W adjacent to the underground storage tanks '7131f" TPH as Gasoline EPA Method To detect the lighter end and BTl'L 801518020 hydrocarbons adjacent to the underground storage tanks TPH as Diesel EPA Method 3550 To detect heaN icr end hydrocarbons adjacent to the underground diesel fuel tank 3.1 Quality Assurance/Quality Control California Fuel's work will include a QA/QC program that will address the minimum precision, accuracy, completeness, comparability, and representatii eness requirements for the proposed analytical methods The protect manager w ill be in frequent contact with the analytical laboratory to assure their methods and results meet the stated QA,'QC objecti%es Tiir total !,umber of samples and their respective analyses arc sammarized in Table 3-3 The number of samples is based on California Fuel's proposed field program The number of analyses includes 10% duplicates, 10% equipment blanks, and one trip blank for groundwater sample QA/QC 13