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21 February 2000 AGE-NC Project No. 95-0185 ' Page 3 of 8 ' The labeled vials were placed in a chilled container under ice and were later transported under chain- of-custody to MAI for analysis. ' Additionally, one ground water sample was collected in a 1-liter amber bottle from well MW-4 for microbiological and physico-chemical analysis. 2.5. SOIL BORING ABANDONMENT i ' All probe borings were permanently sealed to prevent vertical migration of contaminants. Soil borings were abandoned by backfilling with cement slurry from the total depth to surface grade. 2.6. SOIL LOGGING ' After sample preservation,soil was extruded from the remaining portions of the sleeve and screened utilizing an organic vapor meter equipped with a photo-ionization detector (PID: Thermo ,• Environmental 580A, 10.0 eV, calibrated to isobutylene) while the readings were recorded on the boring logs. The soil was described in accordance with the Unified Soil Classification System. A soil profile Is depicted in Appendix B. 2.7. LABORATORY ANALYSIS OF SOIL AND GROUND WATER SAMPLES ' Selected soil and each ground water samples were analyzed for: ' a TPH-g and TPH-d in accordance with EPA methods 8015 Modified, • BTEX in accordance with EPA methods 8020 and ' Oxygenated fuel additives: methyl butyl ether (MTBE), tertiary butyl alcohol (TBA), di- isopropyl ether (DIPS), ethyl tertiary butyl ether (ETBE) and tertiary amyl methyi ether (TAME) in accordance with EPA methods 8260 Modified. ' Three soil samples and one ground water monitoring well sample were transported to-an independent microbiologist, Mr. A. Keith Kaufmann of Culver City, California, and were analyzed for physicochemical properties and microbiological enumeration. Data obtained -_- from the microbiological arid-physicochemical analysis will be used to determine passible effectiveness of bio-remediation as a remediation alternative. i • Advanced GeoEnvironmental,Inc.