Ohio Rev. Code Ann. § 3737.881
(A) The fire marshal shall certify underground storage tank systems installers who meet the standards for certification established in rules adopted under division (D)(1) of this section, pass the certification examination required by this division, and pay the certificate fee established in rules adopted under division (D)(5) of this section. Any individual who wishes to obtain certification as an installer shall apply to the fire marshal on a form prescribed by the fire marshal. The application shall be accompanied by the application and examination fees established in rules adopted under division (D)(5) of this section. The fire marshal shall prescribe an examination designed to test the knowledge of applicants for certification as underground storage tank system installers in the installation, repair, abandonment, and removal of those systems. The examination shall also test the applicants' knowledge and understanding of the requirements and standards established in rules adopted under sections 3737.88 and 3737.882 of the Revised Code pertaining to the installation, repair, abandonment, and removal of those systems. Installer certifications issued under this division shall be renewed annually, upon submission of a certification renewal form prescribed by the fire marshal, provision of proof of successful completion of continuing education requirements, and payment of the certification renewal fee established in rules adopted under division (D)(5) of this section. In addition, the fire marshal may from time to time prescribe an examination for certification renewal and may require applicants to pass the examination and pay the fee established for it in rules adopted under division (D)(5) of this section. The fire marshal may, in accordance with Chapter 119. of the Revised Code, deny, suspend, revoke, or refuse to renew an installer's certification or renewal thereof after finding that any of the following applies:
(D) The fire marshal shall adopt, and may amend and rescind, rules doing all of the following:
(F) On and after January 7, 1990, no person shall do any of the following: