TX HB4028

Defines "preproduction plastic" as plastic resin pellets, flakes, fibers, powders, and powdered coloring used in manufacturing, and designates it as Class II nonhazardous industrial waste

Requires facilities operating under multi-sector general permits to monitor receiving waters for preproduction plastics at least monthly and within 8 hours after each rainfall event

Mandates monthly audits of major preproduction plastic spills, including identifying spill causes, researching solutions, implementing fixes, and measuring effectiveness

Requires facility operators to notify TCEQ within 24 hours of visible preproduction plastic discharges, including photos, GPS coordinates, estimated amounts, and cleanup efforts

Adds preproduction plastic pollution as a factor TCEQ must consider in water quality monitoring, assessments, and standards development for state watersheds