W. Va. Code § 22-30-7

The secretary shall promulgate rules requiring owners and operators of regulated aboveground storage tanks to provide evidence of adequate financial resources to undertake reasonable corrective action for releases from regulated aboveground storage tanks based on factors including the location, contents and size of the tanks. The means of demonstrating adequate financial responsibility may include, but not be limited to, providing evidence of current insurance, guarantee, surety bond, letter of credit, proof of assets, trust fund or qualification as a self insurer. The secretary may determine which bonds and other guarantees of performance provided to the secretary pursuant to other articles of this chapter shall satisfy the requirements of this section.