TERMS AND CONDITIONS OF AGREEMENTS; COSTS.

(a) If the commission enters into a contract or cooperative agreement under Section 104(c)(3) of the environmental response law, the commission shall include in the contract or agreement terms and conditions to:

(1) assure future maintenance of the removal and remedial actions provided for the expected life of those actions as determined by the federal government;

(2) assure the availability of a hazardous waste disposal facility acceptable to the federal government that complies with Subchapter III of the federal Solid Waste Disposal Act (42 U.S.C. Section 6921 et seq.) for any necessary off-site storage, destruction, treatment, or secure disposition of the hazardous substances, pollutants, or contaminants; and

(3) assure payment by the state of:

(A) 10 percent of the costs of the remedial actions, including future maintenance; or

(B) at least 50 percent or more of the costs as determined appropriate by the federal government, taking into account the degree of responsibility of the state for any amount spent in response to a release at a disposal facility that was owned by the state at the time of disposal of hazardous substances at the disposal facility.

(b) A contract entered into with the federal government under Section 104(d)(1) of the environmental response law is subject to the same cost-sharing requirements provided for contracts in Subsection (a)(3).

(c) The state's share of reasonable response costs shall be paid from the fund.