Technology Status Report: In Situ Flushing - CLU-IN

In Situ Flushing Project Summaries
GWRTAC Case Study Database
GWRTAC ID: FLSH0004
Project Name: Chem-Dyne, Hamilton, OH
City: Hamilton State/Province: OH
Primary GWRTAC Personal
Communication Source
(Name/Organization):
Project Summary:
Larry Schmidt
U.S. EPA
Report(s)/Publication(s) (GWRTAC Source):
Internet URL http://www.epa.gov/superfund/index.htm.
The following text is from notes taken from May 1997 conversation with EPA RPM:
The 20-acre site is located adjacent to the Great Miami River. The constituent plume was present
in an alluvial water table aquifer; the depth of the water table is approximately 20 to 30 feet below
the ground surface (bgs). The valley floor, at 200 feet bgs, formed the confining layer, however the
contaminants were present at 80 feet bgs and shallower. No physical containment, such as a
slurry wall, was constructed at the site. A total of 25 shallow (30 feet bgs) and deep (80 feet bgs)
wells were utilized for groundwater extraction. Re-injection of the treated groundwater was
accomplished through approximately eight shallow (20 feet bgs) wells. A total of 859 gpm
groundwater is pumped and treated. Some treated groundwater is re-injected, while a percentage
is discharged via an NPDES permit. Re-injection was discontinued due to the high cost of filtering
groundwater prior to re-injection.
Results and cost information were not available from GWRTAC source.
Report(s)/Publication(s) (Additional Information Sources):
Internet URL http://www.epa.gov/superfund/index.htm.
Ground-Water Remediation Technologies Analysis Center
Operated by Concurrent Technologies Corporation
Appendix - Page 7 of 164
Copyright GWRTAC 1998
Revision 1
Tuesday, November 17, 1998