See the press release below from EPA on
Will building a sand and gravel-armored
substrate on top of PCB-contaminated sediments make fish safe to eat some day?
Can we assume it will actually work?? Those watching the Kalamazoo River Superfund
situation may learn from what is happening on the
Water Sentinels Project, Sierra Club
From: U.S. EPA
CHICAGO (June 28, 2007) - U.S. Environmental Protection Agency Region 5 and Wisconsin Department of Natural Resources today announced a modification to the cleanup plan for PCB-contaminated sediment in Wisconsin's Lower Fox River.
modification, called a Record of Decision Amendment, builds on the original
2003 plan for Operable Units 2 - 5, incorporating new data and taking advantage
of the benefits of both dredging and engineered capping to minimize further
PCB-contamination impacts on the river system. Though the modification includes
more capping than originally planned, the
The new plan will result in lower PCB concentrations after cleanup, and will be completed sooner than the original plan. The plan also allows for more customized cleanup activities to meet the specific conditions of much smaller areas. The agencies believe the amended plan will also be more cost-effective while maintaining protection of human health and the environment.
The engineered caps will range from 13 to 33 inches thick, combining layers of sand and large stones. The caps are extremely durable as well, designed to remain stable though major floods, winter ice and boat propeller wash.
A comment period on the proposed cleanup plan revisions closed in January. EPA received approximately 600 comments. A public meeting attended by nearly 300 people was held in December.
information on the
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