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�,(Vv:ATC <br /> A S S O C I A T E S I N C <br /> sensors on the cone tested the response of the soil to the force of the penetrating cone and <br /> allowed the subsurface stratigraphy to be characterized The cones and rods were advanced by a <br /> hydraulic press with a dow ss e capacity of approximately 25 tons Boring CPTI was <br /> advanced to approximately 100 feet%s. utilizing a truck-mounted CPT rig A copy of the Fisch <br /> Environmental Cone Penetration est Data is included in Appendix B <br /> After the CPT boring was advanced Geoprobe soil boring CPTI was advanced immediately <br /> adjacent to the CPT boring The Geoprobe was advanced to the maximum depth explored in the <br /> CPT boring At the maximum depth, a Hydropunch groundwater sample was collected from the <br /> boring The CPT and the Geoprobe borings were then grouted to the surface with a cement <br /> ' slurry <br /> 2.2 Soil Samnlin2 and Analysis <br /> ' The cored samples and drill cuttings were characterized for soil type, moisture content, and visual <br /> evidence of petroleum hydrocarbons Each soil sample was field screened with a FID for the <br /> ' presence of volatile organic compounds Sample tubes were then sealed at each end using Teflon <br /> tape and plastic end caps, labeled, and placed on ice <br /> Selected soil samples were kept on ice and delivered under chain-of-custody documentation to <br /> Argon Laboratories in Ceres, California for chemical analysis Soil samples were analyzed for <br /> total petroleum hydrocarbons as gasoline (TPHg), as diesel (TPHd), as kerosene (TPHk), and as <br /> motor oil (TPHmo) by EPA method 8015 modified, benzene, toluene, ethyl benzene, and xylenes <br /> (BTEX) by EPA method 8020, and methyl tertiary butyl ether (MTBE), tertiary amyl ether <br /> (TAME), ethyl tertiary butyl ether (ETBE), di-isopropyl ether (RIPE), tertiary butyl alcohol <br /> (TBA) by EPA method 8260 The analytical results for soil samples are summarized in Table 1 <br /> Laboratory data sheets and chain-of-custody documentation are included in Appendix B <br /> 2_3 Groundwater Monitoring Well Construction <br /> Soil borings VEW1, VEW2, and VEW3 were completed as 2-inch diameter vapor extraction <br /> wells to be used in the vapor extraction pilot test The screened interval of vapor extraction well <br /> VEW1 is from 15 to 35 feet bgs The screened interval of vapor extraction wells VEW2 and <br /> VEW3 is from 25 to 45 feet bgs The construction details of the vapor extraction wells are <br /> depicted on the logs contained in Appendix A <br /> Soil borings MW5, MW6, and MW7 were completed as 2-inch diameter groundwater monitoring <br /> wells The screen interval of the monitoring wells was positioned from approximately 45 feet to <br /> 65 feet bgs The construction details of the groundwater monitoring wells are depicted on the <br /> logs contained in Appendix A <br /> w 162577\reportslnfs doc 3 <br />