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' 26 January 2007 <br /> AGE-NC Project No. 01-0839 <br /> ' Page 3 of 12 <br /> intervals: <br /> ' • Between 93 feet and 95 feet bsg; and <br /> ' • Between 112 feet and 115 feet bsg. <br /> ' One soil sample was collected in boring CPT-2 from a specified zone based on the acquired CPT <br /> lithologic data.A steel-tipped piston soil sampling assembly was pushed into the zone,then the tip <br /> was withdrawn to expose a core barrel;the soil sampler was pushed down again to retrieve a 1-foot <br /> soil sample. Upon soil sample retrieval, a brass sleeve was removed from the sampler. The ends of <br /> the brass sleeve were immediately covered with Teflon sheets, sealed with plastic end caps, and <br /> secured with tape. The soil sample was collected between 74 feet and 75 feet bsg. <br /> ' Following collection, the grab ground water samples and soil sample were placed in a chilled <br /> container and transported under chain of custody procedures to Cal Tech Environmental Laboratories <br /> (CTEL), a California Department of Health Services (DHS)-certified analytical laboratory in <br /> Paramount, California. The samples were analyzed for: <br /> ' • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br /> Method 8015M; and <br /> 1 • Benzene,toluene, ethylbenzene, and total xylenes (BTEX), and fuel additives di-isopropyl <br /> ether (DIPS), ethyl tertiary-butyl ether (ETBE), methyl tertiary-butyl ether (MTBE), <br /> tertiary-amyl methyl ether(TAME),tertiary-butyl alcohol(TBA), 1,2-dibromoethane(EDB), <br /> ' and 1,2 dichloroethane (1,2-DCA) by EPA Method 8260B. <br /> ' The twinned soil borings were backfilled over their entire depths with a portland cement grout mix. <br /> ' 3.0. SVE WELL INSTALLATIONS <br /> On 12, 13, and 15 December 2006, three shallow-screened SVE wells and three deeper-screened <br /> ' SVE wells were installed on-site for use in SVE pilot tests. <br /> 3.1. DRILLING AND SAMPLING <br /> Vapor extraction well pilot soil borings VWl, VW3, and VW6 were installed at the site to a total <br /> ' depth of 60 feet bsg and pilot borings V W2,V W4,and V W5 were installed to a total depth of 30 feet <br /> bsg utilizing a CME-75 HT truck-mounted drill rig equipped with 8-inch diameter hollow-stem <br /> ' Advanced GeoEoviroomental,Inc. <br />