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14 June 2004 <br /> AGE-NC Project No. 04-1180 <br /> Page 3 of 5 <br /> equipped with a 2.15-inch diameter soil sampler attached to 1.125-inch diameter probe rods. <br /> Boring P1 was advanced within the assumed former location of the former USTs and/or dispenser <br /> island area; boring P2 was advanced in the assumed down-graident direction of the former UST <br /> and/or dispenser island area, approximately 60.feet northeast of P1. <br /> LW 3.2. SOIL SAMPLE COLLECTION AND ANALYSIS <br /> Samples were collected from the borings at discreet 5-foot intervals using a 1.125" Geoprobe soil <br /> sampling assembly loaded with four 6-inch brass sleeves. All sampling equipment was washed in <br /> an Alconox solution and rinsed twice with water prior to each.sampling run. <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 /> 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 quantified as gasoline (TPH-g) in accordance with EPA <br /> Method 8015M; and <br /> �+ Benzene, toluene, ethylbenzene and total xylenes (BTEX) and the volatile organic <br /> compounds methyl-tertiary-butyl ether(MTBE),tertiary butyl alcohol(TBA), di-isopropyl <br /> ether (DIPE), ethyl tertiary butyl ether (ETBE), tertiary amyl methyl ether (TAME), <br /> 1,2-dichloroethane (1,2-DCA) and 1,2-dibromoethane (EDB) in accordance with EPA <br /> Method 8260B. <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 580B, 10.0 eV, calibrated to isobutylene). The soil was also described visually in <br /> accordance with the Unified Soil Classification System. <br /> Advanced GeoEnvironmental,Inc. <br />