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.1 18 November 1998 �- AGE-NC Project No. 98-0470 Page 3 of 7 Samples were collected at five-foot intervals in all borings, using a split tube sampler loaded with _ three clean, 2- by 6-inch brass sleeves. A 140-pound hammer was used to advance the sampler 18 inches;the number of blows required to advance the sampler in 6-inch increments was recorded on the boring logs. All sampling equipment was washed in an Alconox solution and rinsed twice with _ water prior to each sampling run. Auger returns were stored on-site in DOT rated drums pending laboratory analysis for proper disposal at a licenced facility. Soil samples were preserved by covering both ends of the leading brass sleeve with Teflon sheets, capping and sealing with tape. Samples were stored in a chilled container and transported under chain-of-custody to McCampbell Analytical, Inc. (MAI) a state-certified laboratory in Pacheco, California. Selected soil samples were analyzed in accordance with: • EPA Method 8015m for total petroleum hydrocarbons quantified as gasoline (TPH-g); • EPA Method 8020 for volatile aromatic compounds (benzene, toluene, ethylbenzene and total xylenes: BTEX) and methyl tertiary butyl ether(MTBE); • EPA Method 8260m for di-isopropyl ether(DIPE),ethyl tertiary butyl ether(ETBE), methyl tertiary butyl ether(MTBE), tertiary amyl methyl ether(TAME) and tertiary butyl alcohol �. (TBA). 3.1.2. SOIL DESCRIPTION AND LOGGING Soil was extruded from the second brass sleeve and screened 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 the readings were recorded on the Boring Logs. The soil was described in accordance with the Unified Soil Classification System. The Boring Logs with a soil profile are depicted in Appendix A. 3.1.3. WELL DEVELOPMENT On 24 July 1998, a Solinst water level meter was used to measure the depth to ground water in the well relative to the top of the well casing. After a ground water depth measurement was collected, _ monitoring well MW-1 was purged and developed using a PVC/stainless steel, two-stage submersible pump.Approximately 24 gallons of water were evacuated from the well. Temperature, pH and conductivity were measured at 3-gallon intervals using an ICM model 52200 water analyzer. Advanced GeoEnvironmental,Inc.