Distribution of degrading chlorocarbon solvents in water and soil in a contaminant plume. [Tetrachloroethylene; trichloroethylene; dichloroethylene]
Data from a plume of chlorinated organic solvents located beneath the metallurgical fabrication area (M Area) of the Savannah River Plant (SRP) are discussed. The plume studies in M Area include: water samples from over 200 monitoring wells; continuous split spoon sampling from over 20 wells; and soil gas samples and other special samples. Analysis of chlorocarbon constituents, combined with geologic and hydrologic information, indicates that the transport and fate of these organics are influenced by degradation and sorption. Specifically, the mass remaining in the plume and the ratio of constituents suggest that the degradation rates are ordered: tetrachloroethylene (PCE) > = trichloroethylene (TCE), dichloroethylene (DCE) >> PCE or TCE. Using a very simple first order decay rate assumption, the degradation of PCE under ''natural'' conditions is on the order of 10%/y (k = 0.1 y/sup -1/). Further study is needed to determine if a coupling of sorption and degradation is occurring.
- Research Organization:
- Savannah River Lab., Aiken, SC (USA)
- DOE Contract Number:
- AC09-76SR00001
- OSTI ID:
- 6411410
- Report Number(s):
- DP-MS-86-179; CONF-861138-1; ON: DE87010163
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
CHEMISTRY
DIFFUSION
ENVIRONMENTAL TRANSPORT
GROUND WATER
HYDROGEN COMPOUNDS
HYDROLOGY
MASS TRANSFER
NATIONAL ORGANIZATIONS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
SAVANNAH RIVER PLANT
SOIL CHEMISTRY
SOILS
US AEC
US DOE
US ERDA
US ORGANIZATIONS
WATER
WATER CHEMISTRY