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Remedial design for petroleum hydrocarbons: Soil vapor extraction, product skimmers, and air stripping

Conference · · Ground Water; (United States)
OSTI ID:6963672
;  [1]
  1. Woodward-Clyde Federal Services, Gaithersburg, MD (United States)
Site characterization activities at an Army installation in Virginia performed prior to closure identified a significant release of gasoline from underground storage tanks and piping associated with the post exchange service station. Floating liquid-phase petroleum hydrocarbons (FLPH) observed in the subsurface over an area of approximately 80,000 square feet ranged up to 5 feet in thickness. Ground water was found to be contaminated with dissolved components of gasoline over an area of approximately 150,000 square feet. A nearby lake and adjacent streams were not impacted by either free-phase or dissolved contamination. Interim remedial measures, including pilot testing of FLPH, vapor-phase, and ground water recovery technologies, were implemented following discovery of the release. Over 5,000 gallons of free-phase product were recovered by skimming and approximately 1,450 gallons of product equivalent were recovered during pilot testing of a soil vapor extraction (SVE) system. At the conclusion of these actions, hydrocarbons remain distributed in the subsurface in the adsorbed-, dissolved-, and vapor-phase. The majority of residual on-site contamination is believed to be either adsorbed to soil particles or as FLPH. The final design of an integrated remediation system based on the pilot test results addressed these conditions.
OSTI ID:
6963672
Report Number(s):
CONF-9410209--
Conference Information:
Journal Name: Ground Water; (United States) Journal Volume: 32:5
Country of Publication:
United States
Language:
English