A method for assessing residual NAPL based on organic chemical concentrations in soil samples
- Univ. of Waterloo, Ontario (Canada)
Ground water contamination by non-aqueous phase liquid (NAPL) chemicals is a serious concern at many industrial facilities and waste disposal sites. NAPL in the form of immobile residual contamination, or pools of mobile or potentially mobile NAPL, can represent continuing sources of ground water contamination. In order to develop rational and cost-effective plans for remediation of soil and ground water contamination at such sites, it is essential to determine if non-aqueous phase liquid (NAPL) chemicals are present in the subsurface and delineate the zones of NAPL contamination. Qualitatively, soil analyses that exhibit chemical concentrations in the percent range or >10,000 mg/kg would generally be considered to indicate the presence of NAPL. However, the results of soil analyses are seldom used in a quantitative manner to assess the possible presence of residual NAPL contamination when chemical concentrations are lower and the presence of NAPL is not obvious. The assessment of the presence of NAPL in soil samples is possible using the results of chemical and physical analyses of the soil, and the fundamental principles of chemical partitioning in unsaturated or saturated soil. The method requires information on the soil of the type typically considered in ground water contamination studies and provides a simple tool for the investigators of chemical spill and waste disposal sites to assess whether soil chemical analyses indicate the presence of residual NAPL in the subsurface.
- OSTI ID:
- 6004038
- Journal Information:
- Ground Water Monitoring Review; (United States), Journal Name: Ground Water Monitoring Review; (United States) Vol. 11:2; ISSN 0277-1926; ISSN GWMRD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020900* -- Petroleum-- Environmental Aspects
54 ENVIRONMENTAL SCIENCES
540220 -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
540320 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
CHEMISTRY
CONTROL
ENVIRONMENTAL TRANSPORT
GROUND WATER
HYDROGEN COMPOUNDS
LAND POLLUTION
LAND POLLUTION CONTROL
MASS TRANSFER
OIL SPILLS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
POLLUTION CONTROL
REMEDIAL ACTION
SOIL CHEMISTRY
SOILS
WATER
WATER POLLUTION
WATER POLLUTION CONTROL