(a) If the attorney general brings an action against a person under Section 142.013 or 142.014 or to enforce an administrative penalty assessed under Section 142.0173 and an injunction is granted against the person or the person is found liable for a civil or administrative penalty, the attorney general may recover, on behalf of the attorney general and the department, reasonable expenses and costs.
(b) For purposes of this section, reasonable expenses and costs include expenses incurred by the department and the attorney general in the investigation, initiation, and prosecution of an action, including reasonable investigative costs, attorney's fees, witness fees, and deposition expenses.