This subchapter applies to owners and operators of brine evaporation pits required to provide evidence of financial assurance under Chapter 218 of this title (relating to Brine Evaporation Pits). This subchapter does not apply to state or federal governmental entities whose debts and liabilities are the debts and liabilities of a state or the United States. This subchapter establishes requirements and mechanisms for demonstrating financial assurance for closure and third party pollution liability.