# COMAR Title 26 — Department of the Environment

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

### Chapter 12 — UST Systems with Field-Constructed Tanks and Airport Hydrant Fuel Distribution Systems

#### Regulation .06 Applicability of Closure Requirements to Previously Closed UST Systems.

*COMAR 26.10.12.06*

When directed by the Department, an owner and an operator of a UST system with a field-constructed tank or an airport hydrant system that was permanently closed before June 13, 2022 shall assess the excavation zone and permanently close the UST system in accordance with COMAR 26.10.10 if a spill, release, or discharge from the UST system may, in the judgment of the Department, pose a current or potential threat to human health and the environment.