Any individual who, after the effective date of this act,¹ is employed or appointed as operator of a waterworks or wastewater works for the operation of which he does not hold a certificate, or the operation of which would be contrary to the terms and conditions of any certificate held by such individual, shall be issued a temporary certificate for the operation of such works by the Department upon satisfactory application made therefor within ten (10) days after initial employment or appointment of such individual as the operator of such works, accompanied by a fee as set by the Board. Such application shall be made under oath, and shall provide in addition any information required by the Department. Said temporary certificate shall expire one (1) calendar year after the date of the applicant's initial employment as the operator of such works, and shall not be renewable. If such application is not made within said ten (10) days, then the continuation of such individual as the operator of such works after said ten (10) days shall be unlawful and shall constitute a violation of this act by both said individual and the person owning or maintaining such works. If the issuance of such temporary certificate is refused for any lawful reason, then the continuation of such individual as the operator of such works after thirty (30) days after the Department has mailed notice of such refusal to the person owning or maintaining such works, and to such applicant, shall be unlawful and shall constitute a violation of this act by both said individual and the person owning or maintaining such works. Not more than one temporary certificate shall be issued to the same individual during any five-year period. This section shall not be applicable to or authorize the issuance of a temporary certificate to any individual who has had a certificate revoked or whose certificate is under suspension, or to whom the issuance or renewal or reactivation of a certificate has been refused, under Section 1113 of this title, except where such individual has thereafter been reinstated or issued a certificate as provided in the Waterworks and Wastewater Works Operator Certification Act.