A.72 Tennessee Products, TN
A.72.1 Summary
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Environment: |
Freshwater |
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Scale: |
Full |
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Contaminants of Concern: |
PAHs |
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Final Remedy: |
Earthen dams, with water pumped around by three 12-inch pumps. Long Stick Excavator was used to dredge material Contaminated sediment mixed with drying agent and trucked to off-site disposal facilities; cement kiln in South Carolina, a boiler in Baldwin, Illinois, and another cement kiln in Tennessee. |
A.72.2 Site Description
Year: 1998
Water Depth: 0–4 ft
Target Volume: 5,000 yd3
Actual Volume Removed: 23,300 yd3
A.72.3 Remedial Objectives
Visually-identified coal tar material and disposal pit in the floodplain are targets.
Contaminated sediment area: 2.5 miles of Chattanooga Creek (50-75 ft wide)
A.72.4 Remedial Approach
Long-stick excavator was used. NAPL site was found during excavation and was capped with AquaBlok. Two methods of dewatering were used before they were discarded for earthen dams (flume tubes and Port-A-Dams).
A.72.5 Monitoring
Resuspension:
There are no resuspensionA renewed suspension of insoluble particles after they have been precipitated. controls needed at this site because dry excavation was used.
Dredge depth was generally 3-6 ft; however, one hole was dredged 15 ft deep.
Residuals:
There was no cappingTechnology which covers contaminated sediment with material to isolate the contaminants from the surrounding environment. or backfilling needed for this site except for one NAPL site found during excavation.
Still monitoring AquaBlok capA covering over material (contaminated sediment) used to isolate the contaminants from the surrounding environment. of NAPL site at this time.
A.72.6 References
EPA Superfund Explanation of Significant Differences: Tennessee Products EPA ID: TND071516959. Aug 2004. http://www.epa.gov/superfund/sites/rods/fulltext/e0404091.pdf.
TDEC-DoR. First Five-Year Review Report for Tennessee Products Superfund Site EPA ID# TND071516959. Sep 2011. http://www.epa.gov/superfund/sites/fiveyear/f2011040004115.pdf.
Major Contaminated Sediment Sites Database; Sept. 2004 as updated 2008. http://www.smwg.org/MCSS_Database/MCSS_Database_Docs.html.
Publication Date: August 2014