UST financial responsibility requirements apply to which of the following?

The requirement for financial responsibility concerning underground storage tanks (USTs) is essential for ensuring that operators can address potential environmental damage or cleanup costs that may arise from leaks or spills. This responsibility typically extends to all petroleum dispensing and UST facilities, which covers a broad range of operators and not just specific types.

Financial responsibility is designed to ensure that funds are available for the remediation of contamination and other liabilities associated with UST operations, thus promoting safety and environmental protection across the board. This includes facilities that hold various volumes of petroleum and are involved in dispensing to consumers or businesses, reflecting a comprehensive approach to managing the risks associated with USTs.

In contrast, limiting financial responsibility to only residential systems, government-operated facilities, or systems based solely on their capacity overlooks important aspects of storage tank safety and environmental stewardship applicable across all operational scales. Therefore, the correct answer reflects the inclusive nature of the financial responsibility requirements for all petroleum dispensing and UST facilities.