H-E-B on list of South Texas’ top pollution events

The one-time release of ammonia from an H-E-B LP warehouse was one of South Texas’ most polluting events in 2019, according to a recent report by an environmentalist group.

A computer glitch at 4710 N. PanAm Expressway shut down a system in the H-E-B warehouse for 45 minutes in July 2019, according to the company. The malfunction caused 1,665 pounds of anhydrous ammonia to be released from a pressure relief valve on a dairy cooler, making it one of the worst air pollution incidents of 2019, according…