No person shall remove or replace or subcontract for the removal or replacement of a residential underground heating oil storage tank system if the person finds such removal or replacement will involve remediation of contaminated soil or groundwater, unless the person is a registered contractor. To become a registered contractor, a person shall provide to the commissioner on forms prescribed by said commissioner, (1) evidence of financial assurance in the form of liability insurance coverage or liquid company assets in an amount not less than one million dollars, and (2) a written statement certifying that such person has had any training required by law for such business and that such person has (A) performed no fewer than three residential underground petroleum storage tank system removals, or (B) has contracted for at least three removals of residential underground petroleum storage tank systems. Such person shall pay a registration fee of nine hundred forty dollars to the commissioner. Each contractor holding a valid registration on July first shall, not later than August first of that year, pay a renewal fee to the commissioner of four hundred seventy dollars in order to maintain such registration. Any money collected for registration pursuant to this section shall be deposited in the General Fund. The commissioner may revoke a registration for cause and, on and after the date the requirements for financial assurance, training and performance standards are established pursuant to subsection (b) of § 22a-449d, may reject any application for registration that does not meet such requirements.