The agency required a more thorough plan, and a solution that would prevent the polluted soil from contaminate another site after it was dumped.
The coalition's cause is to fight for the cleanup of polluted soil from a lead smelter that closed in 1984 after operating for 55 years.
But with a large, sprawling industrial plant and possibly polluted soil from years of car-making, the site is unattractive.
Cleanup can require digging up the polluted soil and burying it at a hazardous waste dump.
The polluted soil is covered with electrodes, which will heat the surface dielectric.
The most recent, Keith Middle School, required a cleanup of the polluted soil on the site.
Fruit bodies can bioaccumulate heavy metals, including toxic ones, from polluted soil.
His Westinghouse competition project involves unleashing bacteria to clean up polluted soil.
Once the polluted soil is protectively contained, additional park infrastructure is planned.
Several other studies had also shown polluted soil and groundwater in the area.