A. These regulations are promulgated under the authority provided by Miss. Code Ann. Section 21-27-207.B. Miss. Code Ann. Section 21-27-211 requires that beginning on July 1, 1987, all municipal and domestic wastewater treatment plants be operated by persons who are certified as qualified to operate such facilities.C. Certificates shall be valid for three (3) years, unless revoked or invalidated for cause. D. In the event of temporary loss of an operator, notice shall be immediately given to the Department and the continued operation of such facility without a certified operator may proceed on an interim basis for a period not to exceed one hundred eighty (180) days, except for good cause shown upon petition to the Department.E. These regulations do not pertain to a wastewater treatment facility treating wastewater generated solely by an industry and owned and operated by said industry. Miss. Code Ann. §§ 21-27-201, et seq., 49-2-1, et seq. and 49-17-1, et seq.