All industrial users subject to this chapter shall retain and preserve for no less than three years, any records, books, documents (including documentation associated with best management practices), memoranda, reports, correspondence and summaries relating to monitoring, sampling and chemical analyses made by or on behalf of an industrial user in connection with its discharge. All such records shall be made available for inspection and copying by the City Manager, DEQ, or EPA. The period of records retention shall be extended when requested by the City Manager, DEQ, or EPA. All records subject to administrative adjustment or any other enforcement or litigation activities shall be retained by the industrial user until all enforcement activities have concluded and all appeals have expired. (Ord. 2-2023 § 1 (Att. A), 2023; Ord. 3-2009, 2009.)