Oregon Administrative Rules
Chapter 340 - DEPARTMENT OF ENVIRONMENTAL QUALITY
Division 150 - UNDERGROUND STORAGE TANK RULES
Section 340-150-0500 - Reporting Suspected Releases
Universal Citation: OR Admin Rules 340-150-0500
Current through Register Vol. 63, No. 3, March 1, 2024
(1) An owner and permittee of an UST system must notify DEQ within 24 hours, or another reasonable period allowed by DEQ, and follow the procedures in OAR 340-150-0510 for any of the following conditions:
(a) The discovery by any means of
a regulated substance at the UST facility or in the surrounding off-site area
such as, but not limited to, the presence of free product or vapors in soils,
basements, sewer or utility lines or nearby surface water or release into a
secondary containment area. Additionally, an owner and permittee must identify
and mitigate any fire, explosion or vapor hazards at the UST facility in
accordance with OAR 340-122-0220(3); or
(b) Unusual operating conditions (such as,
but not limited to, the erratic behavior of product dispensing equipment, the
sudden loss of product from the UST system, differences or widely fluctuating
water levels or an unexplained presence of water in the tank, or liquid in the
interstitial space of secondarily contained systems, unless the system
equipment or component is immediately tested and found to be defective, but not
leaking, and is immediately repaired; or
(c) For secondarily contained systems, except
as provided for in OAR 340-150-0465(2)(b)(D), any liquid in an interstitial
space not used as part of the interstitial monitoring method (for example,
brine filled) unless the liquid is immediately removed; or
(d) Monitoring results or alarms from any
release detection method that indicates a release may have occurred as set
forth in OAR 340-150-430 through OAR 340-150-0470, unless
(A) The monitoring device is found to be
defective and is immediately repaired or recalibrated and subsequent monitoring
events as required by the specific release detection method do not confirm the
initial result; or
(B) The leak is
contained in the secondary containment and, except as provided for in OAR
340-150-0465(2)(b)(D), any liquid in an interstitial space not used as part of
the interstitial monitoring method (for example, brine filled) is immediately
removed, or any defective system equipment or component is immediately
repaired; or
(C) The alarm was
determined to be a non-release event (for example, from a power surge or caused
by filling the tank or dispensing during release detection testing).
(2) Upon receipt of a notice of a suspected release, DEQ will provide a confirmation number to the owner. An owner and permittee should reference this confirmation number when reporting the results of a suspected release investigation and confirmation under OAR 340-150-0510.
Statutory/Other Authority: ORS 466.706 - 466.835, 466.994 & 466.995
Statutes/Other Implemented: ORS 466.746 & 466.765
Disclaimer: These regulations may not be the most recent version. Oregon may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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