The DNR attributes the 92 percent increase to a law passed in 2016 that allows hunters to use high-powered rifles on private property.
House Bill 1344 designates East Chicago as "an area of special concern," and allocates resources for water and soil testing in the city.
Citizens Energy Group said escaping gas had prompted the evacuation of seven nearby homes and the closure of a state highway.
The NAACP and East Chicago residents are calling on the EPA for more resources as Administrator Scott Pruitt visits the lead-contaminated neighborhood.
The EPA sampling results showed no significant trace of the chemical in the lake or Burns Waterway after the Tuesday spill at U.S. Steel's Portage plant.
Tuesday's U.S. Steel spill, caused by a pipe failure, allowed wastewater containing hexavalent chromium to enter a tributary 100 yards from Lake Michigan.
The U.S. Steel plant in Portage, Indiana reported wastewater containing hexavalent chromium had spilled into a waterway within 100 yards of Lake Michigan.
Solar power advocates say they'll ask Gov. Eric Holcomb to veto the bill.
Fifty-six families still live in the lead-tainted public housing complex, with 19 waiting to appeal their temporary relocation assignments.
There are now five bald eagle nests in Bartholomew County. Their numbers are increasing across the state while moving closer to urban areas.