Texas Health and Safety Code - HEALTH & SAFETY § 361.611. Permit Not Required

(a) A state or local permit is not required for removal or remedial action conducted on a site as part of a voluntary cleanup under this subchapter. A person shall coordinate a voluntary cleanup with ongoing federal and state hazardous waste programs.

(b) The commission by rule shall require that the person conducting the voluntary cleanup comply with any federal or state standard, requirement, criterion, or limitation to which the remedial action would otherwise be subject if a permit were required.