# COMAR Title 26 — Department of the Environment

## Subtitle 10 — Oil Pollution Control and Storage Tank Management

### Chapter 18 — Field-Erected Aboveground Storage Tanks

#### Regulation .13 Recordkeeping.

*COMAR 26.10.18.13*

An owner, an operator, and a person in charge of an AST system with a field-erected AST shall:

A. Maintain the records required under this chapter at the oil storage facility or oil handling facility, or another a readily accessible location;

B. Provide the records to the Department upon request;

C. Retain the following records for a minimum of 5 years:

  (1) Records of periodic visual inspections conducted in accordance with Regulation .11B of this chapter;

  (2) Records of annual normal and emergency vent inspections and cleaning conducted in accordance with Regulation .11D of this chapter;

  (3) Inventory control records;

  (4) Overfill prevention equipment testing records;

  (5) Release detection records;

  (6) Secondary containment dike drainage logs;

  (7) Storage tank gauging device calibration records; and

  (8) Testing records for aboveground and underground piping; and

D. 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:

  (1) Construction records, including records of:

    (a) The AST name plate information;

    (b) The original as-built specifications and drawings and any modifications made to the AST system during the operational life of the AST system;

    (c) Applicable manufacturer’s documentation for ancillary equipment;

    (d) Tests conducted upon completing an installation or repair of an AST system component, including hydrostatic testing and pressure tightness testing;

    (e) Material tests and analyses, including secondary containment dike permeability tests;

    (f) Tank strapping record; and

    (g) The names of the companies performing construction activities and a description of the work performed;

  (2) Cathodic protection system inspections records for impressed current and galvanic systems, including records of:

    (a) Cathodic protection system design description;

    (b) Inspection findings and conclusions;

    (c) Recommendations; and

    (d) Testing and repair records;

  (3) A complete copy of each final formal inspection report;

  (4) A complete copy of each ultrasonic thickness inspection report;

  (5) Records of AST system repairs and alteration history, including names of companies completing repair work;

  (6) Records of secondary containment dike testing and evaluation;

  (7) Records of spills, releases, and discharges and written reports of the occurrences required by COMAR 26.10.01.05E; and

  (8) A closure report for an AST system permanently closed in accordance with Regulation .12 of this chapter.