BOURNE – Officials at the Air Force Civil Engineer Center, the agency cleaning up contamination at Joint Base Cape Cod, has announced changes to the clean-up of two plumes that officials believe will shorten the mitigation process in one case and lengthen it in the other case.
The new plans are for Chemical Spill 10 and Storm Drain 5 groundwater plumes at Joint Base Cape Cod.
For the Chemical Spill 10 plume, the change is an expansion to the groundwater extraction system with the addition of two new extraction wells to speed up aquifer restoration.
The new estimate for restoration is the year 2060, more than 30 years earlier compared to the 2094 restoration estimate originally given for the clean up.
For the Storm Drain 5 plume, the change is due to an increase in the estimated aquifer restoration time frame from 2008 to 2022.
This increase in the amount of time needed to clean up the plume is due to residual trichloroethylene (TCE) contamination lingering in three monitoring wells.
Both plumes continue to be monitored.
Land use controls, including the identification and evaluation of active private wells is ongoing to be protective of public health, according to Doug Karson, Air Force Civil Engineer Center Community Involvement Lead.