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t i 12 December 1995 AGE-NC Project No. 95-0140 Page 3 of 5 Figure 2. Probing B 1 was located in the approximate location of stakes 14 and 15; probing B2 was located between stakes 6 and 12 ; probing B3 was placed between stakes 26 and 30; probing B4 was placed between stakes 31 and 32; and probing B5 was placed between stakes 50, 51 and 53. Discrete soil samples were collected at five foot intervals using a Geoprobe soil sampler assembly loaded with pre-cleaned 1.125-inch by 6-inch brass sleeves. Soil samples were preserved by covering both ends of brass sleeve with Teflon tape, capping, and sealing with duct tape. The samples were immediately stored in a chilled container and transported to McCampbell Analytical Inc. (MAI). Selected soil samples were analyzed for total petroleum hydrocarbons, volatile aromatics (benzene, toluene, ethyl benzene and xylene: BTE&X), chlorinated pesticides and HVOCs in accordance with EPA methods 5030/8015, 602/8020 and 601/8010, respectively. 3.2. GROUND WATER SAMPLE COLLECTION AND ANALYSIS Water samples were collected each probing using a Geoprobe water sampler assembly. Water was encountered in each probing at a depth of approximately 12 feet. Upon collection, water samples were transferred to four 40-m1 EPA vials preserved with hydrochloric acid and two 1-liter amber bottles. Each sample was logged on a chain-of-custody form, placed in a chilled container and transported to MAI. Water samples were analyzed for TPH, BTE&X, chlorinated pesticides and HVOCs in accordance with EPA methods 5030/8015, 602/8020 and 601/8010, respectively. 3.3. EQUIPMENT DECONTAMINATION Prior to each sampling run, all sampling equipment, probe rods, and brass sleeves used for sample collection were thoroughly washed in an Alconox solution and rinsed twice with water to avoid cross- contamination. 3.4. LOGGING Soil was extruded from the second brass sleeve and screened for the presence of organic vapors using a photo-ionization detector(PID: Thermo Environmental 580A, 10.0 eV, calibrated to isobutylene), and the readings were recorded on the boring logs. The soil was then described in accordance with the Unified Soil Classification System (see Boring Logs, Appendix B). The probings were backfilled to grade with Portland cement.