An owner or operator may satisfy the requirements for financial assurance for both closure and post-closure care for more than one facility by using a trust fund, surety bond, letter of credit, or insurance, or a combination thereof, which meets the specifications set forth in 310 CMR 30.904 and 30.906. The amount of funds available through the mechanism(s) shall be no less than the sum of funds that would be available if a separate mechanism(s) were to be established and required to be maintained for financial assurance of closure and post-closure care.
310 CMR, § 30.907