- (a) The owner or operator of an UST system may temporarily take an UST system out of service. For purposes of this section, an UST system shall be considered temporarily out of service only when all regulated substances have been removed from an UST system, including from the piping, so that no more than 2.5 centimeters (i.e., one inch) of such substances, or residue from such substances, remain in the UST.
(b) The owner or operator of an UST system temporarily taken out of service shall comply with the UST regulations, except that:
- (1) Release detection shall not be required other than monthly measurement, recording, and recordkeeping of any regulated substance, residue and water level in the UST system; and(2) Monthly and annual inspections shall not be required other than the monthly inspection of all of the items specified in the “UST Monthly Inspection Report For USTs Temporarily Out-of-Service” posted on the department’s internet website.
- (c) In addition to any other requirements of this section, beginning 90 days after an UST is taken temporarily out of service, the owner or operator shall leave vent lines open and functioning and shall cap and secure all other lines, pumps, manways, and ancillary equipment.
- (d) The owner or operator of an UST system temporarily taken out of service may maintain any records required under the UST regulations in a location in the state of Connecticut, other than where the UST system is located, provided such records shall be made available to the commissioner upon request within the time frame specified in any such request. If no time frame is specified in the request, the requested records shall be submitted to the commissioner not later than 30 days after receipt of a request.
(Effective July 28, 1994; Amended May 7, 2025)