A group of Texas environmental groups say the federal Environmental Protection Agency looked the other way when Texas didn’t require tough enough rules on air pollution for several refineries, gas plants and chemical plants.

The Environmental Integrity Project, along with other Texas environmental groups, filed a lawsuit against EPA Administrator Andrew Wheeler on Monday after he did not respond to a petition by the groups to correct what they say is a violation of federal law in Texas.

Read more from Erin Douglas with The Texas Tribune here.