The EPA said in a statement that it "continues to evaluate data and hopes to announce a cleanup plan for public comment in late summer or early fall."

The soil has high levels of arsenic, lead, cadmium, and zinc. EPA estimates the cleanup will cost more than $26 million.

The standards require new cars and light trucks build after 2025 to get about 50 miles to the gallon.

The agency will update residents on residential soil sampling and cleanup work in areas of Hammond and Whiting near Federated Metals' abandoned smelter.

The EPA put the Spencer site on its priority list last week, but the Indiana Department of Environmental Management says the chemical in the water is at safe levels.

The EPA said Tuesday that adding the city of Spencer's Franklin Street Groundwater Contamination site to the federal agency's priority list signals its commitment to cleaning up that contamination.

Indianapolis, Jeffersonville and Richmond are each getting $300,000 to either assess and clean up contamination or redevelop cleaned-up sites.

The proposed revisions include allowing individual states to set their own standards for coal ash disposal.

The site on Indianapolis' southwest side was the location of a retail battery sales store from about 1962 until 2008.

Officials from the EPA and other federal agencies will join the city of East Chicago and its housing authority at the event.