Port Arthur saw two large air releases in four days from major companies experiencing issues with equipment at their sites.
The first occurred midmorning on Sept. 19 when crews at the Total Port Arthur Refinery discovered a leak at a storage tank in its tank farm that was leaking material.
In a self-reported notice to the Texas Commission on Environmental Quality, Total estimated that almost 700 pounds of unspecified volatile organic compounds had been released during the nine-hour event.
VOCs are compounds usually found in burning fuels and are considered dangerous to human health.
The company reported that the leak was repaired and the site was cleaned by 7 p.m.
In an email, representatives from Total said the company had no further comment about the incident.
Four days later on Sept. 22, Motiva experienced an issue with one of its units at its chemical plant that caused it to flare