Within 90 days after the adoption date hereof, existing operations shall comply with the provisions set forth in §§ 151.24 and 151.25 of this code, and within one year after the adoption date hereof, existing operations shall comply with the provisions set forth in § 151.26 of this code. However, in no case shall requirements be imposed which are economically or engineeringly unreasonable in respect to conditions resulting from operations prior to enactment of this subchapter.
(Prior Code, § 7-1-9) (Ord. 50, passed 7-6-1970)