(a) Remedial action for sites on the inventory that is proceeding in accordance with the provisions of state or federal programs shall continue in accordance with such programs.

(b) The commissioner shall provide for remedial action for all assessed sites by (1) referring the site to the United States Environmental Protection Agency pursuant to the provisions of CERCLA; (2) issuing administrative orders to responsible parties pursuant to § 22a-6, 22a-428, 22a-432, 22a-433 or 22a-449, or (3) any action deemed necessary by said commissioner.

(c) If the commissioner determines that (1) the remedial action schedule for a site proposed by the United States Environmental Protection Agency pursuant to CERCLA is not consistent with the schedule developed in the assessment for such site list, or (2) the site, based on the site assessment score, is ineligible for CERCLA funding, he may pursue remedial action for the site from any account established for such purpose and seek reimbursement for such remedial action.