Lnapl distribution and hydrocarbon vapor transport in the capillary fringe

Technical Report · Tue Dec 01 04:00:00 EST 1992

OSTI ID:6663281

Ostendorf, D W; Moyer, E E; Richards, R J; Hinlein, E S; Xie, Y

Vertical distributions of water and light nonaqueous phase liquid (LNAPL) from a well documented aviation gasoline spill at the US Coast Guard Air Station in Traverse City, Michigan were measured. Two field sampling methods for the determination of LNAPL content were presented. Existing models for the free and residual LNAPL profiles described the data with calibrated error standard deviations ranging from 14 to 23% in magnitude. A field trapping protocol was also developed with sample ports fabricated in the intact core sleeves as part of the trapping method, which yielded total hydrocarbon concentration data consistent with independent data from a tubing cluster. The evaporation of 2,2,4 trimethylpentane and 2,2,5 trimethylhexane vapors from the LNAPL was measured in the laboratory under diffusive and advective conditions to simulate soil venting and sparging. The data and theory suggested that lower soil venting or sparging flow rates were in principle as effective as higher rates in stripping gasoline vapors from contaminated soils. The biodegradation of hydrocarbon vapors in soil microcosms obtained aseptically from the site was also documented.

• Research Organization: Massachusetts Univ., Amherst, MA (United States). Environmental Engineering Program
• OSTI ID: 6663281
• Report Number(s): PB-93-157550/XAB; CNN: EPA-R-816821
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540250* -- Environment
Terrestrial-- Site Resource & Use Studies-- (1990-)
ALLOCATIONS
AVIATION FUELS
BIODEGRADATION
CHEMICAL REACTIONS
CHEMICAL SPILLS
DECOMPOSITION
DEVELOPED COUNTRIES
DIRECT REACTIONS
DISTRIBUTION
EVAPORATION
FLOW RATE
FLUIDS
FUELS
GASES
GASOLINE
HYDROCARBONS
HYPOTHESIS
LIQUID FUELS
LIQUID WASTES
MICHIGAN
MICROCOSMS
MICROORGANISMS
NATIONAL ORGANIZATIONS
NONAQUEOUS SOLVENTS
NORTH AMERICA
NUCLEAR REACTIONS
ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PHASE TRANSFORMATIONS
PLUMES
REMEDIAL ACTION
SAMPLING
SLEEVES
SOILS
SOLVENTS
SPATIAL DISTRIBUTION
STRIPPING
TRANSFER REACTIONS
TRAPPING
US COAST GUARD
US DOT
US ORGANIZATIONS
USA
VAPORS
WASTES