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06 March 2002 AGE-NC Project No 01-0865 Page 4 of 9 Two soil samples from bonngs B5 and B7 were logged on a chain-of-custody form, placed in a chilled container and transported to Cal Tech Environmental Laboratories (CTEL), a State of California Department of Health Services (DHS)-certified laboratory 33 SOIL ANALYSES Selected samples were analyzed for the following • TPH-g, in accordance with EPA Method 8015 Modified, • BTEX in accordance with EPA Method 8020, and • Fuel additives including MTBE, tertiary-butyl alcohol (TBA), di-isopropyl ether(DIPE), ethyl tertiary-butyl ether (ETBE), tertiary-amyl methyl ether (TAME), methanol, ethanol, ethylene dibromide (EDB) and 1,2-dichloroethane (1,2-DCA) by EPA Method 8260B • 3 4 SOIL LOGGING Dunng drilling, soil sample duplicates were monitored for the presence of organic vapor using an organic vapor meter equipped with a photo-ionization detector(PID Thermo Environmental 580A, 10 0 eV, calibrated to isobutylene) and were visually described on bonng logs in accordance with the Unified Soil Classification System (USCS) Boring logs are included as Appendix A 3 5 GROUND WATER SAMPLING Grab groundwater samples were collected from everyprobe boring,with the exception of B5,using a Geoprobe hydropunch sampling assembly The probe rods were advanced to the desired depths, the hollow steel rods were then pulled up four feet exposing a PVC screen in the saturated zones Ground water was allowed to enter the screen, and samples were retrieved using a modified PVC tubing bailer Sufficient sample was collected from the borings to fill three 40-m1 EPA-approved volatile organic analysis (VOA) vials containing 0 5 ml 18% hydrochloric acid as a sample preservative Ground water sample containers were labeled with probe boring designation, depth, date, time, and sampler's initials The preserved samples were logged on a chain-of-custody form, placed in a chilled container and transported to CTEL for analysis