Maryland environmental officials filed a petition Wednesday asking the EPA to crack down on 19 coal plants in Indiana, Kentucky, Ohio, Pennsylvania and West Virginia.

The EPA will begin removing lead contaminated soil from 13 yards this fall.

A lawsuit could add Indiana to the Ozone Transport Region, a group of 11 states required by the EPA to reduce smog-causing pollutants.

They want a federal judge to force the EPA to add nine more states, including Indiana, to the group required by law to act together to reduce smog in the Northeast.

Lead contamination is the most serious in young children. Because they're still growing, lead is more easily absorbed into their bodies which can delay neurological functions and cause learning and behavioral problems.

Five coal plants in Indiana ranked in the top 100 for both toxic and greenhouse gas pollution - more than any other state.

Hundreds of families living in the West Calumet neighborhood have been told to find new homes by November.

The new standards include a 25 percent cut to tractor-trailer emissions and fuel use in the next decade.

Some, like Indianapolis Power and Light's plant in Indianapolis, are converting to run on natural gas.

More than 100 of Indiana's sewage systems need improvements to comply with federal standards, and the Environmental Protection Agency has sued many cities and towns over sewage overflow problems. Some cities are building new sewage overflow tunnels to fix the problem.