Conn. Gen. Stat. § 22a-449m

Any remediation of contaminated soil or groundwater the cost of which is to be paid out of the program established under subsection (a) of section 22a-449c shall be performed by or under the direct onsite supervision of a registered contractor, as defined in sections 22a-449 l and 22a-449n , and shall be performed in accordance with regulations adopted by the commissioner pursuant to section 22a-133k that establish direct exposure criteria for soil, pollutant mobility criteria for soil and groundwater protection criteria for GA and GAA areas. If the replacement of any such residential underground heating oil storage tank system performed pursuant to the provisions of this section involves installation of an underground petroleum storage tank, such tank shall conform to any standards which apply to new underground petroleum storage tanks.