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_ ... 10 May 2000 AGE-NC Project No. 99-0641 Page 3 of 5 • Fuel oxygenating compounds including methyl tert-butyl ether(MTBE), di-isopropyl ether (DIPE), ethyl tertiary-butyl ether(ETBE), tertiary-amyl methyl ether (TAME) and tertiary butyl alcohol (TBA)by EPA Method 8260; and • Volatile organic compounds in accordance with EPA Method 8260. Grab groundwater samples were collected from borings Bl and B2. The sample was collected utilizing a Geoprobe water sampling assembly fitted with a pre-cleaned one-inch diameter, 0.01-inch slotted, PVC temporary well screen. The ground water sample was extracted by lowering a Teflon bailer through the hollow center of the push rods into the screen section. Upon retrieval, each sample was transferred into EPA-approved 40-m1 VOA vials, containing 0.5 ml 18%hydrochloric acid as a sample preservative. Care was taken to ensure that visible air bubbles were not present in the VOAs after filling and capping. Samples for TPH-d analyses were collected in laboratory-supplied, 1-liter amber bottles without a sample preservative. The sample containers were labeled with the boring designation, date, time, and sampler's initials and were placed in a chilled container under Ice. The water samples from B 1 and B2 were logged on a chain-of-custody form and were transported to a DHS-certified laboratory for analysis for: • TPH-g and TPH-d in accordance with EPA Method 5030/8015M; • BTEX with MTBE in accordance with EPA method 8020; • Fuel oxygenating compounds including MTBE, D1PE, ETBE, TAME and TBA by EPA Method 8260 modified; and • Volatile organic compounds in accordance with EPA Method 8260. During probe boring activities, soil sample duplicates were monitored for the presence of organic vapor(OV) using an organic vapor meter equipped with a photo-ionization detector(PID: Thermo Environmental 580A, 10.0 eV, calibrated to 1sobutylene). All probing rods used were cleaned prior to advancement in each probe boring location. Sampling tools and brass sleeves used for sample collection were thoroughly washed in a solution of Alconox and rinsed with clean tap water prior to each sampling run. Advanced Gco£mironmental.Inc.