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LIGHT NONAQUEOUS-PHASE LIQUID HYDROCARBON WEATHERING AT SOME JP-4 FUEL RELEASE SITES
Citation:
Kampbell*, D H., C. B. Snyder, D. C. Downey, AND J. E. Hansen. LIGHT NONAQUEOUS-PHASE LIQUID HYDROCARBON WEATHERING AT SOME JP-4 FUEL RELEASE SITES. JOURNAL OF HAZARDOUS SUBSTANCE RESEARCH. Kansas State University, 3(4):1-7, (2001).
Description:
A fuel weathering study was conducted for database entries to estimate natural light, nonaqueousphase
liquid weathering and source-term reduction rates for use in natural attenuation models. A range of BTEX
weathering rates from mobile LNAPL plumes at eight field sites with known release dates was documented. Free phase fuel BTEX weathering rates varied among sites and were influenced by many factors. First-order weathering
rate for five JP-4 fuel sites was 16%/year. Benzene and toluene exhibited higher weathering rates than
ethylbenzene and xylene, as expected, because of higher water solubility. The primary weathering mechanism of
mobile LNAPL was dissolution. Meaningful determination of mobile LNAPL weathering rates for BTEX in the
fuels was difficult because of the large ranges of initial BTEX values.