The fine is for violations at the Clairton Coke Works for the second quarter of 2022. That is in addition to more than $458,000 in fines for the first quarter.
U.S. Steel will begin closing three of its 10 remaining coke batteries at its Clairton plant later this month. It is expected to cut emissions by 15 to 20 percent.
EPA listed a total of five chemicals that were released when a Norfolk Southern train derailed and told the company it may be liable for cleanup. Residents are back home.
Officials warn that a drastic temperature change in a rail car could result in a catastrophic explosion, with the potential of shrapnel traveling up to a mile.