Remedial Action Implementation Phase 3, Ogallala Ground Water Superfund Site OU2, Ogallala, Nebraska
The U.S. Environmental Protection Agency (EPA) will be starting the third year of remedial action implementation at the Ogallala Ground Water Contamination Superfund site, Operable Unit (OU) 2. As in the previous year, activities will involve the placement of a chemical oxidant that would further degrade and reduce the levels of contamination in the ground water. The first injection event is taking place the week of September 8, 2008, to be followed by subsequent injections every 3 months.
ABOUT THE CONTAMINATION
Perchloroethylene/tetrachloroethylene (PCE) is the contaminant of concern at the OU2 portion of the site. PCE is a chlorinated hydrocarbon solvent. PCE is commonly used in dry-cleaning fluid, spot removers, and degreasers.
The Nebraska Department of Health discovered contamination in Ogallala's water supply wells during routine sampling in 1989. Since that time the City has installed a new well field. The Ogallala Ground Water Contamination site was placed on the National Priorities List in December 1994, making it eligible for cleanup under EPA's Superfund program. Several actions have already been taken to address contamination at other parts of the site.
On February 3, 2006, EPA issued a Record of Decision (ROD) for OU2 of the site. In the ROD, EPA presented the selected remedy to address the contamination in the ground water. The goal of this remedy is to reduce contamination in the ground water to below drinking water standards.
Although the contaminant plume has significantly diminished due to the performance of chemical injections, PCE concentrations near Tip Top Cleaner remain elevated. Consequently, EPA will continue injections along North Spruce and East A streets.
Site-related documents, which provide details of the nature and extent of contamination and the work that has been completed at the Ogallala Ground Water Contamination site, are part of the Administrative Record File, available during normal business hours at the following locations:
Goodall City Library
203 W. A Street
EPA Region 7
901 N. 5th Street
Kansas City, Kansas
If you have questions or need additional information, please contact:
Community Involvement Coordinator
EPA, Region 7
Office of Public Affairs
901 North 5th Street
Kansas City, Kansas 66101