All dischargers subject to this chapter shall retain and preserve for no less than three years any records, books, documents, memoranda, reports, correspondence and any and all summaries thereof, relating to monitoring, cleaning, maintenance, sampling and chemical analysis made by or in behalf of a discharger in connection with its discharge. All records which pertain to matters which are the subject of administrative adjustment or any other enforcement or litigation involving the discharger must be retained until all enforcement activities have concluded and all periods of limitation with respect to any and all appeals have expired. These records shall be available for inspection and copying by the director or representative at any time. (Ord. 3220 § 2, 2016; Ord. 2742 § 2, 2008; Ord. 1705, 1989)