(a) Those substances designated as hazardous as of June 1, 1980, by the Administrator of the United States Environmental Protection Agency under 33 U.S.C. § 1321(b)(2)(A) are designated as hazardous substances for purposes of this Article.

(b) Such quantities of hazardous substances as may be harmful as determined as of June 1, 1980, by the Administrator of the United States Environmental Protection Agency under 33 U.S.C. § 1321(b)(4) are quantities which may be harmful for purposes of this Article.

(c) Changes by Administrator of the United States Environmental Protection Agency in the designation of hazardous substances and the determination of quantities which may be harmful shall be deemed to be made to the designation of hazardous substances and the determination of quantities for purposes of this Article, unless the Commission objects within 120 days of publication of the action in the Federal Register. The Commission may object to a change by the Administrator on the basis that the change is not consistent with the standards for determining hazardous substances or harmful quantities. Upon objection by the Commission to a change, the Commission shall initiate rule-making proceedings on the change. The change will not be made pending the hearing and a final determination by the Commission. After the hearing, the Commission may reject the change upon a finding that the change is not consistent with the standards for determining hazardous substances or harmful quantities. (1979, 2nd Sess., c. 1209, s. 3; 1987, c. 827, s. 190.)