California UST System Operator Practice Test

The correct choice is the requirement for owners and operators to provide a signed and witnessed certificate of financial responsibility when using insurance to demonstrate financial responsibility. This certificate serves as a formal declaration that the owner or operator has the necessary insurance coverage in place to meet the financial obligations related to the operation of underground storage tanks (USTs).

The certificate typically includes important details such as the insurer's information, the coverage limits, and the specific USTs covered under the policy. It is a vital document that provides assurance to regulatory agencies that the owner or operator can respond financially in the event of a release of hazardous substances from the USTs, fulfilling legal obligations under environmental regulations.

Other documentation mentioned is not sufficient to meet the specific regulatory requirements for showing financial responsibility tied to UST operations. General liability insurance policies may not explicitly cover environmental liabilities related to USTs, and annual financial audit reports or proof of property ownership, while important for other regulatory or operational purposes, do not specifically pertain to demonstrating financial responsibility for potential environmental damages associated with UST operations.