Passive control of VOCs using valved well heads: FY1994 report
The data described in this report were collected as part of a project to explore the viability of passive soil vapor extraction techniques for removal of volatile organic contaminants from the subsurface. The principal objectives of this project are to determine the mechanism and physical dynamics of the relationship between surface atmospheric pressure and subsurface flow and contaminant transport, and to use this information to design cost effective and efficient remediation systems. This work is funded under the Volatile Organic Compounds - Arid Integrated Demonstration (VOC - Arid ID). The purpose of the VOC - Arid ID is to identify, develop, and demonstrate technologies that may be used to characterize, remediate, and/or monitor and or semiarid sites containing VOC (e.g., carbon tetrachloride and trichloroethylene [TCE]) with or without associated metal and radionuclide contamination. The results from this project are applicable at arid, semi-arid, and non-arid sites. This report documents the methods and findings from the Savannah River Site barometric pumping study. The results in this report include: (1) Surface and subsurface pressure measurements and analysis results from the Savannah River Integrated Demonstration Site (SRIDS). (2) Barometric pumping flow data measured and/or estimated from several wells. (3) Continuous concentration and flow data from one well. (4) development of two computer models that can predict either subsurface pressure or the effective cumulative permeability of the formation in the vertical direction from surface atmospheric pressure data. (5) The derivation of the analytical computer models, the executable code on disk, and written documentation for using the models including examples. The optimization of barometric removal rates using an innovative control valve and the implications of this data for passive extraction systems are discussed.
- Research Organization:
- Westinghouse Savannah River Co., Aiken, SC (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC09-89SR18035
- OSTI ID:
- 10108184
- Report Number(s):
- WSRC-TR--94-0524; ON: DE95004829
- Country of Publication:
- United States
- Language:
- English
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