Under Texas’ “enforcement discretion” policy, companies were allowed to vent or burn off pollutants, as long as they are reported. Recent weatherization requirements for power plants did not apply to gas processing plants.By Dylan Baddour, Peter AldhousAs freezing temperatures swept over West Texas last week, leaky pipeline systems in the Permian Basin of West Texas began to suck in air, spoiling their products, risking an explosion and leading operators to release or burn off vast volumes of gas.