Vadose zone natural attenuation of hydrocarbon vapors: An emperical assessment of soil gas vertical profile data

Sophie Roggemans, Cristin L. Bruce, Paul C. Johnson, Richard L. Johnson

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

An empirical assessment of available soil gas profile data was carried out, with emphasis on petroleum hydrocarbon release sites, to identify data sets with sufficient detail, review the data and identify the range of behaviors observed, assess whether or not the data was consistent with the occurrence of aerobic biodegradation, and assess the significance of aerobic biodegradation on soil gas profiles and hydrocarbon fluxes. A database of published and unpublished data from hydrocarbon spill sites where soil gas profiles had been monitored was compiled. Field data at three additional sites were also collected. At most sites, moisture content, effective diffusion coefficient, subsurface characterization data, and vapor concentration profiles of oxygen, CO2, and petroleum hydrocarbon were measured. Four different qualitative behaviors were identified. Variables relevant to dictating behavior were postulated, e.g., type of surface cover and soil type.

Original languageEnglish (US)
Pages (from-to)1-12
Number of pages12
JournalAPI Soil and Groundwater Research Bulletin
Issue number15
StatePublished - Dec 2001

ASJC Scopus subject areas

  • Energy(all)
  • Earth and Planetary Sciences(all)

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