New Jersey Statutes Title 58. Waters and Water Supply 58 § 10A-24.2

a. A business firm shall not engage in the business of performing services on underground storage tanks at underground storage tank sites for purposes of complying with the requirements of P.L.1986, c. 102 (C.58:10A-21 et seq.), or tank testing, tank installation, tank removal, tank closure, or subsurface evaluations for corrective action, closure or corrosivity on an unregulated heating oil tank, unless the business firm has been certified in accordance with section 3 of P.L.1991, c. 123 (C.58:10A-24.3), by certification of the owner, or, in the case of partnership, a partner in the firm, or, in the case of a corporation, an executive officer of the corporation.

b. Except as provided pursuant to subsection b. of section 1 of P.L.1991, c. 123 (C.58:10A-24.1), any service performed on an underground storage tank at an underground storage tank site for the purpose of complying with the provisions of P.L.1986, c. 102 (C.58:10A-21 et seq.), or tank testing, tank installation, tank removal, tank closure, or subsurface evaluations for corrective action, closure or corrosivity on an unregulated heating oil tank, shall be performed by, or under the immediate on-site supervision of, a person certified by the department in accordance with section 3 of P.L .1991, c. 123 (C.58:10A-24.3).

c. A business firm or other person performing well drilling or pump installation services at the site of an underground storage tank or an unregulated heating oil tank who is licensed to perform such services pursuant to section 7 of P.L.1947, c. 377 (C.58:4A-11), shall not be required to be certified pursuant to section 3 of P.L.1991, c. 123 (C.58:10A-24.3), or to perform those services under the supervision of a person certified thereunder.

d. Professional engineers licensed pursuant to P.L.1938, c. 342 (C.45:8-27 et seq.) shall be exempt from the certification requirements of section 3 of P.L.1991, c. 123 (C.58:10A-24.3) and from the payment of a recertification or renewal fee required pursuant to section 4 of that act (C.58:10A-24.4), but shall be required to obtain a certification card issued by the department at no charge and to make the card available for inspection by a State or local official when performing tank services on an underground storage tank at an underground storage tank site or on an unregulated heating oil tank . Professional engineers exempt pursuant to this subsection shall be required to attend a department approved training course on the department's rules and regulations concerning underground storage tanks within one year of certification or recertification.

e. A plumbing contractor, as defined pursuant to section 2 of P.L.1968, c . 362 (C.45:14C-2), engaged in the installation, repair, testing, or closure of a waste oil underground storage tank shall be exempt from the certification requirements of section 3 of P.L.1991, c. 123 (C.58:10A-24.3) and from payment of a recertification or renewal fee required pursuant to section 4 of that act (C.58:10A-24.4), but shall be required to obtain a certification card issued by the department at no charge and to make the card available for inspection by a State or local official when performing tank services on an underground storage tank. Plumbing contractors exempt pursuant to this subsection shall be required to attend a department approved training course on the department's rules and regulations concerning underground storage tanks within one year of certification or recertification. A plumbing contractor engaged in the installation, repair, testing, or closure of an unregulated heating oil tank or an underground storage tank that is not a waste oil tank shall be required to comply with section 3 of P.L.1991, c. 123 (C.58:10A-24.3).