The circulating air barrier: Effective prevention of liquid contaminant movement through soil Page: 3 of 10
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3.3 The Circulating Air Barrier:
Effective Prevention of Liquid Contaminant Movement Through Soil
CONTRACT INFORMATIONContract Number
Contractor
AC21-90MC27346
K&M Engineering & Consulting Corporation
2001 L Street, NW
Washington, DC 20036Contract Project Manager
Principal Investigators
METC Project Manager
Period of PerformanceA. John Rezaiyan
Terri Towers, K&M
William Overbey, BDM
Mr. Robert C. Bedick
July 30, 1993 to July 30, 1994OBJECTIVES
K&M Engineering and Consulting
Corporation (K&M) supported by BDM Federal,
Inc. (BDM), completed a study in June, 1993, for
DOE's Morgantown Energy Technology Center
(METC). In the study, the K&M/BDM team
evaluated alternative drilling technologies and
subsurface barriers which would be used at the
Hanford site for confinement of contaminated
materials which might leak from the buried single
shell tanks. Specifically, the C Tank Farm was
targeted for consideration because of the presence of
two high-heat tanks (radiogenic heat source) and the
suspected leaking of seven of the 12 tanks in the
farm. The study culminated in the conceptual
development of seven integrated subsurface barrier
systems and associated implementation plans.
Following the completion of that study,
K&M was assigned a task to further evaluate two of
the most promising barrier systems identified, theCirculating Air Barrier (CAB), and a Permeation
Cone Grouting Barrier. In this more recent study,
K&M was supported by BDM Federal, Inc. and
Arctech, Inc. Objectives of the task included design,
modeling, selection of drilling and surface processing
equipment, and development oftest procedures and
cost estimates for conducting a cold test
demonstration ofthe CAB process. The
demonstration configuration is scaled to a prototype
CAB system designed specifically for the C Tank
Farm at the Hanford Site. The design methodology
is also applicable for application of the CAB system
at other sites within the DOE weapons complex.
BACKGROUND INFORMATION
The Hanford Site, located near Richland,
Washington was used by the former Atomic Energy
Commission, later succeeded by the Department of
Energy, to manufacture materials for use in nuclear
weapons systems. Hanford contains 149 single
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Towers, T. & Overbey, W. The circulating air barrier: Effective prevention of liquid contaminant movement through soil, article, December 1994; United States. (https://digital.library.unt.edu/ark:/67531/metadc666367/m1/3/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.