The director may provide for certification without examination of any operator recommended by a governing body or owner as having been in charge of the operation or supervising the operation of a wastewater treatment facility on August 30, 1987, and whose competence has been demonstrated. Certificates issued under this section shall be valid for a period of four years from August 30, 1987. After such four-year period, certificates granted under this section shall no longer be valid, and such operators shall become fully certified under the Wastewater Treatment Operator Certification Act.
Neb. Rev. Stat. §§ 81-15,132