Texas Water Code - WATER § 26.356. Inspections, Monitoring, and Testing

(a) For the purposes of developing or assisting in the development of a regulation, conducting a study, or enforcing this subchapter, an owner or operator of an underground or aboveground storage tank, on the request of the commission, shall:

(b) For the purposes of developing or assisting in the development of a regulation, conducting a study, or enforcing this subchapter, the commission, its designated agent, or employee may:

(c) The commission may order an owner or an operator of an underground or aboveground storage tank to conduct monitoring and testing if the commission finds that there is reasonable cause to believe that a release has occurred in the area in which the underground or aboveground storage tank is located.

(d) Each inspection made under this section must be begun and completed with reasonable promptness.  Before a designated agent or employee of the commission enters private property to carry out a function authorized under this section, the agent or employee must give reasonable notice and exhibit proper identification to the manager or owner of the property or to another appropriate person, as provided by commission rule.  The commission's designated agent or employee must observe the regulations of the establishment being inspected, including regulations regarding safety, internal security, and fire protection.