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phosphate solution (TSP) and twice rinsed with the last rinse using <br /> distilled water prior to sampling. <br /> 6) Soil samples collected in the lowest brass liner will be <br /> preserved by covering both ends with Teflon tape, capping with <br /> plastic caps and sealing the caps with plastic tape. Soil samples <br /> will be labeled and logged under Chain-of- Custody (COC) control. <br /> Soil samples will be stored in a cooler with ice, transported to a <br /> state certified laboratory for analysis with COC documentation. <br /> 7) Soil Samples will be analyzed for Total Petroleum <br /> Hydrocarbons, as gasoline (TPHG) , as diesel (TPHD) and as motor oil <br /> (TOG) ; Benzene, Toluene, Ethylbenzene and Xylene (BTEX) . The <br /> analytical method used will be those listed in the "Tri-Regional <br /> Guidelines" which are directives of the Regional Water Quality <br /> Control Board and requested by the SJCEHD. <br /> 8) Soil cuttings will be monitored with an Organic Vapor Detector <br /> for the presence of volatile hydrocarbons. Soil cuttings will be <br /> placed on top of and covered with visqueen awaiting analysis. <br /> Proper disposal of the soil will depend on the analysis. Disposal <br /> of any contaminated soil is the responsibility of the property <br /> owner. <br /> 9) All borings will be logged by inspection of the samples and <br /> classified using the Unified Soil Classification System by a <br /> California Certified Engineering Geologist. <br /> 10) A minimum of three days after the installation of the wells, <br /> the wells will be developed by pumping and purging. Temperature, <br /> conductivity and Ph will be measured and groundwater sample <br /> collected after the measurements are stabilized. Groundwater <br /> samples collected by clean dedicated bailer. The 3 groundwater <br /> samples will be placed in a cooled ice chest and transported to a <br /> state certified laboratory under COC documentation for analyses. <br /> 11) The groundwater samples collected will be analyzed for Total <br /> Petroleum Hydrocarbons, as gasoline (TPHG) , as diesel (TPHD) and as <br /> motor oil (TOG) ; Benzene, Toluene, Ethylbenzene and Xylene (BTEX) . <br /> The analytical method used will be those listed in the "Tri- <br /> Regional Guidelines" which are directives of the Regional Water <br /> Quality Control Board and requested by the SJCEHD. <br /> 12) The elevation of the well heads will be surveyed using a City <br /> of Stockton benchmark if available in the site area. The depth to <br /> groundwater in each well will be measured to a hundredths of a foot <br /> using an electronic probe. The elevation of the groundwater in each <br /> well will be used to establish the direction and slope of the <br /> gradient. <br /> 5 <br />