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I15 June 2001 AGE-NC Project No 96-0263 IPage 2 of 6 For each sample, both ends of the leading or other selected sleeve were covered with Teflon sheets, capped and sealed with tape The samples were labeled, stored on ice and transported under chain-of- custody to McCampbell Analytical, Inc (MAI), a State of California Department of Health Services (DHS)-certified analytical laboratory 22 LOGGING ' Soil was extruded from a second brass sleeve and was screened for theva organic resence of or p b p I using an organic vapor meter (OVM) equipped with a photo-ionization detector (PID Thermo Environmental 580A, 10 0 eV, calibrated to isobutylene), and the OVM readings were recorded on the boring log The soil was then visually described in accordance with the Unified Soil Classification System (see Appendix A) 2 3 WELL COMPLETIONS . Pilot borings MW9, MW 10 and MW 11 were completed as ground water monitoring wells using ' two-inch diameter PVC casing with 0 020-inch slotted screen installed from approximately 5 feet to 20 feet bsg and with blank casing extended to the surface The filter pack(No 2/12 Lonestar sand) was installed from approximately 3 feet to 20 feet bsg A nominal 2-foot bentonite chip plug was then installed above the filter pack and hydrated Water-tight, traffic-rated well boxes were then installed over the wells As-built well diagrams are depicted on the boring logs in Appendix A 24 LABORATORY ANALYSES OF SOIL SAMPLES ISelected soil samples were analyzed for • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA ' Method 5030/8015 Modified, • Volatile aromatic hydrocarbons- benzene, toluene, ethylbenzene and total xylenes (BTEX) ' and methyl tertiary-butyl ether (MTBE) in accordance with EPA Method 8020, • Oxygenated compounds - di-isopropyl ether (DIPE), ethyl tertiary-butyl ether (ETBE), I MTBE, tertiary-amyl methyl ether(TAME) and tertiary butanol. (TBA) in accordance with EPA Method 8260 Modified, and • Ethylene dibromide (EDB) and 1,2-dichloroethane (1,2-DCA) in accordance with EPA Method 8260 Modified 1 1