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I10 October 2005 <br /> AGE-NC Project No 04-1168 <br /> Page 2 of 7 <br /> second sleeve were covered with Teflon sheets, capped, and sealed with tape The sample sleeves <br /> were labeled, stored on ice, and transported under chain-of-custody to Cal Tech Environmental <br /> Laboratories(CTEL),a State of California Department of Health Services(DHS)-certified analytical <br /> laboratory Selected soil samples were analyzed for <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br /> Method 8015 Modified, <br /> • Benzene, toluene, ethylbenzene, and total xylenes (BTEX) and methyl tertiary-butyl ether <br /> (MTBE) in accordance with EPA Method 8260B, <br />' • The fuel additives di-isopropyl ether(DiPE),ethyl tertiary-butyl ether(ETBE),tertiary-amyl <br /> methyl ether (TAME), tertiary butanol (TBA), 1,2-dichloroethane (1,2-DCA), and <br />' 1,2-dibromoethane (EDB) by EPA Method 8260B <br />' The sampling equipment was washed in an Alconox solution and rinsed with water prior to each <br /> sampling run to minimize cross-contamination <br />' 2 12 Logging <br />' Soil was extruded from a second brass sleeve The soil was then visually described in accordance <br /> with the Unified Soil Classification System (see Appendix B for boring logs) <br />' 2 1 3 Well Completions <br />' Pilot borings MW1 through MW3 were completed as ground water monitoring wells using 2-inch <br /> diameter PVC casing with a 0 020-inch slotted screen.Installed from approximately 50 to 70 feet bsg <br /> The filter pack (No 3 Lonestar sand) was installed from 48 to 70 feet bsg, and a 3-foot bentonite <br />' chip plug was then installed above the filter pack and hydrated The wells were then grouted to near <br /> the surface with Portland cement, and water-tight, traffic-rated well boxes were Installed over the <br /> wells As-built well diagrams are depicted on the boring logs In Appendix B <br /> I <br />' 2 14 Monitoring Well Development <br /> On 25 July 2005, monitoring wells MW-1 through MW-3 were developed using a steel bailer and <br />' Watera Inertia pump with dedicated 518" polyvinyl tubing Ground water was purged from each <br /> monitoring well until the water was visually sediment free, between 24 and 30 gallons of water was <br /> . removed from the wells Purged ground water was containerized In properly labeled DOT-approved <br /> Advanced GcoEnviroumcnta3,Inc <br />