An owner, an operator, and a person in charge of an AST system with a field-erected AST shall: Maintain the records required under this chapter at the oil storage facility or oil handling facility, or another a readily accessible location; Provide the records to the Department upon request; Retain the following records for a minimum of 5 years: Records of periodic visual inspections conducted in accordance with Regulation .11B of this chapter; Records of annual normal and emergency vent inspections and cleaning conducted in accordance with Regulation .11D of this chapter; Inventory control records; Overfill prevention equipment testing records; Release detection records; Secondary containment dike drainage logs; Storage tank gauging device calibration records; and Testing records for aboveground and underground piping; and Retain the following AST system records for the operational life of an AST system and for at least 5 years after an AST system has been permanently closed in accordance with Regulation .12 of this chapter: Construction records, including records of: The AST name plate information; The original as-built specifications and drawings and any modifications made to the AST system during the operational life of the AST system; Applicable manufacturer’s documentation for ancillary equipment; Tests conducted upon completing an installation or repair of an AST system component, including hydrostatic testing and pressure tightness testing; Material tests and analyses, including secondary containment dike permeability tests; Tank strapping record; and The names of the companies performing construction activities and a description of the work performed; Cathodic protection system inspections records for impressed current and galvanic systems, including records of: Cathodic protection system design description; Inspection findings and conclusions; Recommendations; and Testing and repair records; A complete copy of each final formal inspection report; A complete copy of each ultrasonic thickness inspection report; Records of AST system repairs and alteration history, including names of companies completing repair work; Records of secondary containment dike testing and evaluation; Records of spills, releases, and discharges and written reports of the occurrences required by COMAR 26.10.01.05E; and A closure report for an AST system permanently closed in accordance with Regulation .12 of this chapter.