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r SW/ `Moe <br /> #6+ 08 ,lune 2003 <br /> AGE-NC Project No.02-0961 <br /> Page 3 of 5 <br /> • B5 was advanced 20 feet northeast of the furthest east dispenser location. <br /> Iw The boring locations are depicted on Figure 2. <br /> w <br /> 3.2. SOIL SAMPLE COLLECTION AND ANALYSIS <br /> Samples were collected from the borings at discreet five-foot intervals using a 1.125"Geoprobe soil <br /> sampling assembly loaded with four six-inch brass sleeves. All sampling equipment was washed in <br /> ' an Alconox solution and rinsed twice with water prior to each sampling run. <br /> LV <br /> For each soil sample collected, both ends of the second or other selected sleeve were covered with <br /> Teflon sheets,capped and sealed with tape.The samples were labeled,stored on ice and transported <br /> LM under chain-of-custody to Cal Tech Environmental Laboratories (CTEL) a State of California <br /> Department of Health Services (DHS)-certified analytical laboratory. Selected samples were <br /> analyzed for: <br /> • Total petroleum hydrocarbons as gasoline(TPH-g)and as diesel(TPH-d)in accordance with <br /> EPA Method 8015 Modified; and <br /> • Benzene,toluene,ethylbenzene and total xylenes(BTEX)and the fuel additives methyl-tert- <br /> butyl ether(MTBE), tertiary butyl alcohol (TBA), di-isopropyl ether (DIPE), ethyl tertiary <br /> butyl ether (ETBE), tertiary amyl methyl ether (TAME),1,2-dibromoethane (EDB) and <br /> 1,2-dichloro ethane (1,2-DCA) in accordance with EPA Method 8260B. <br /> r6V <br /> 3.3. SOIL LOGGING <br /> '-' After sample preservation,soil was extruded from the remaining sleeves and field-screened utilizing <br /> an organic vapor analyzer (OVA) equipped with a photo-ionization detector (PID: Thermo <br /> Environmental 580A, 10.0 eV, calibrated to isobutylene). The soil was also described visually in <br /> L" accordance with the Unified Soil Classification System. Soil boring logs exhibiting soil profiles are <br /> depicted in Appendix A. <br /> 3.4. GRAB GROUND WATER COLLECTION AND ANALYSIS <br /> After probing to a depth of 30 feet bsg, ground water was found to be at approximately 28 feet bsg. <br /> A `grab' ground water sample was collected from each boring. The ground water sample was <br /> extracted by lowering an inertia pump down a temporarily installed,one-inch diameter PVC casing <br /> with a 5-foot long,0.01-slotted well screen at the lower end or a hydro punch sampling tool equipped <br /> with a 1.5 foot length of 0.01-slotted well screen. Each ground water sample was transferred into <br /> i.. <br /> Advanced GeoEnvironmental,Inc. <br /> L= <br />