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2.0 Previous Work, Soil Borings �I <br /> 4 <br /> 2.1 General �{ <br /> ;I <br /> On May 12, 1993 TVG and CFM co-financed a soil boring into the tank removal location. The intent <br /> of the boring was to determine if further work was warranted at the site. Linda Turkatte, Public <br /> Health Services,San Joaquin County, was present during the sampling. <br /> I <br /> 2.2 Location and Depth 1 <br /> The May 12, 1993 soil boring was made with a hollow stem auger and continuous core drilling. <br /> Terminal depth was 27 feet. Samples were collected at 17,!:119, and 27 feet. <br /> II <br /> 2.3 Sample Handling <br />{ Samples were collected with brass tubes,sealed, and logged on a chain of custody. A soil boring log <br /> was submitted by Tom Vogle on July 1, 1993. <br /> 111+ <br /> 2.4 Soil Analytical Results <br />` 2.4.1 Methods of analysis used: <br /> Gasoline compounds -- modified Method 8015 <br /> BTEX compounds -- Method 80M <br /> Total Lead -- Method EPA DOHS <br /> k <br /> 2.4.2 Results: Table 1 "Soil Analysis Results" 1 <br /> Sample # Depth Benzene, Toluene, Ethyl Total TPH Total <br /> X <br /> ppb Ppb Benzene, .� ykne, Gasoline, Lead, <br /> ppb :ppb ppm ppm--. <br /> t <br /> B-1 16.5-17 60 1,700 7,600 165,000 5,400 ND<0.3 <br /> B-1 18.5-19 830 2,000 240,000 1[1,460,000 44,000 10.0 <br /> I <br /> B-1 26.5-27 ND 3 4 182 ND<0.3 <br /> IF <br /> Page 2 <br /> 31 <br /> { <br /> fj <br /> f <br />