A.75 Town Branch, KY

A.75.1 Summary

Environment:	Freshwater
Scale:
Contaminants of Concern:	PCBs
Final Remedy:	Dams with bypass pumping of creek flow to dry out target areas. Contaminated sediment was sent off site to Emelle, Alabama (TSCA waste <50 ppm), non-TSCA waste sent to local solid waste landfill.

 

A.75.2 Site Description

Year: 2000

Target Volume: 290,000 yd³

Actual Volume Removed: 239,000 yd³

A.75.3 Remedial Objectives

0.1 ppm PCBs or to extent practicable

Contaminated sediment area: 3.5 mile sector

A.75.4 Monitoring

No suspension measures were needed because dry excavation was used.

Performance/ Yes, goals were initially reached until it was realized a few years later that PCB levels were back up due to a NAPL source. A NAPL recovery system was put in to stop recontamination.

A.75.5 References

Doody, J. Paul and A. D. Weeks. Sediment Removal and Restoration of Town Branch Creek in Russellville, Kentucky. American Society of Civil Engineers, pp. 1-14. doi: http://ascelibrary.org/doi/abs/10.1061/40680%282003%2982. http://cedb.asce.org/cgi/WWWdisplay.cgi?0304704.

Major Contaminated Sediment Sites Database; Sept. 2004 as updated 2008. http://www.smwg.org/MCSS_Database/MCSS_Database_Docs.html.

Publication Date: August 2014