# COMAR Title 26 — Department of the Environment

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

### Chapter 05 — UST Systems: Release Detection

#### Regulation .06 Release Detection Recordkeeping.

*COMAR 26.10.05.06*

A. An owner and an operator of a UST system shall maintain records demonstrating compliance with the applicable requirements of this chapter:

  (1) In accordance with COMAR 26.10.04.05;

  (2) For at least 1 year at the regulated substance storage facility;

  (3) For at least 5 years at a location designated by the owner of the UST system; and

  (4) That include the following information:

    (a) Written performance claims pertaining to any release detection system used, and the manner in which these claims have been justified or tested by the equipment manufacturer or installer;

    (b) The results of any sampling, testing, or monitoring including:

      (i) The results of annual operability tests required in Regulation .01C of this chapter; and

      (ii) The results of precision tightness testing conducted in accordance with Regulation .05D of this chapter; and

    (c) Written documentation for all calibration, maintenance, and repair of release detection equipment permanently located on-site, and any schedules of required calibration and maintenance provided by the release detection equipment manufacturer.

B. An owner and an operator of a UST system shall maintain records of site assessments required under Regulation .05F of this chapter for as long as the groundwater monitoring method is used.