The U.S. Environmental Protection Agency finalized a rule that adds natural gas processing facilities to the list of industrial sectors required to report chemical releases and pollution.

The rule would add 482 natural gas facilities nationwide to the Toxics Release Inventory, requiring them to report the emission of at least one of 21 chemicals covered by the TRI.

Depending on the composition of the gas they are processing, facilities can emit hydrogen sulfide, methane, benzene, toluene, ethyl benzene, mixed xylenes and n-hexane.

The natural gas processing facilities will begin tracking their releases and other waste management quantities in January 2022 and will submit TRI data beginning in 2023.

As of March 2021, Indiana did not have any natural gas processing facilities, but had about 30 natural gas storage facilities. According to the U.S. Department of Energy, 36 of the state’s 179 power plants are powered by natural gas.