Some of the releases occurred in South Texas counties, including McMullen, Live Oak and DeWitt, which are significant sites of oil and gas exploration.
The company has filed for a permit to eject up to 200,000 gallons of treated waste and sewage water into a bay that was designated Texas' first coastal preserve.
Thousands of 'emissions events' from chemical plants each year exceed permitted limits, but only a small fraction result in penalties from the state’s environmental agency.
Despite the high levels of smog, state officials are pushing back on ozone pollution controls proposed by the EPA, arguing such rules would compromise the electric grid.