The agency wants to lower the federal ozone clean air standard from 75 parts per billion to between 65-70 parts per billion.
Director of the Hoosier Environmental Council says Pence should focus on the opportunities Indiana has for clean energy.
The U.S. Environmental Protection Agency will set national standards for the regulation of coal ash.
The EPA is considering adding a site in Kokomo to the federal list of Superfund sites, which are deemed a threat to public health.
Indianapolis Power and Light plans to replace its current coal-fired power plant near Martinsville with a new natural gas plant.
Pence says the state is determined to use every option to prevent the EPA from what he calls a proposal that disregards the rule of law by bypassing Congress.
Gov. Mike Pence says new restrictions on power plants will raise energy prices in Indiana.
New Indiana laws are in effect, job discrimination legislation for veterans and how Indiana coal industry communities are preparing for new EPA regulations.
Residents in Southwest Indiana worry new EPA regulations could cause major job loss in the area, although economists say it's too soon to tell.
The Supreme Court ruled Monday that the EPA could change emission thresholds for certain industries.