OAR 340-150-0500
Reporting Suspected Releases

(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 (Suspected Release Investigation and Confirmation Steps) 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 (Cleanup Rules for Leaking Petroleum UST Systems: Initial Response)(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 (Interstitial Monitoring Release Detection Method)(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 (Other Methods of Release Detection), 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 (Interstitial Monitoring Release Detection Method)(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 (Suspected Release Investigation and Confirmation Steps).

Source: Rule 340-150-0500 — Reporting Suspected Releases, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=340-150-0500.

340‑150‑0001
Purpose and Scope 340‑150‑0006
Applicability and General Requirements 340‑150‑0008
Exemptions and Deferrals 340‑150‑0010
Definitions 340‑150‑0020
UST General Permit Registration Certificate Required 340‑150‑0021
Termination of Temporary Permits 340‑150‑0052
Modification of Registration Certificates For Changes in Ownership and Permittee 340‑150‑0080
Denial, Suspension or Revocation of General Permit Registration Certificates 340‑150‑0102
Termination of General Permit Registration Certificates for Installation, Operation and Temporary Closure 340‑150‑0110
UST General Permit Registration, Annual Compliance and Other Fees 340‑150‑0135
General Requirements for Owners and Permittees 340‑150‑0137
UST Systems with Field-Constructed Tanks and Airport Hydrant Fuel Distribution Systems 340‑150‑0140
Requirements for Sellers of USTs 340‑150‑0150
Depositing Regulated Substances in USTs 340‑150‑0152
Requirements for Distributors of Regulated Substances for Deposit into USTs 340‑150‑0156
Performance of UST Services by Owners or Permittees 340‑150‑0160
General Permit Requirements for Installing an UST System 340‑150‑0163
General Permit Requirements for Operating an UST System 340‑150‑0167
General Permit Requirements for Temporary Closure of an UST System 340‑150‑0168
General Permit Requirements for Decommissioning an UST System by Permanent Closure or Change-in-Service 340‑150‑0180
Site Assessment Requirements 340‑150‑0200
Training Requirements for UST System Operators and Emergency Response Information 340‑150‑0210
Training Requirements for UST Operators 340‑150‑0250
Expedited Enforcement Process 340‑150‑0302
Installation of Used USTs 340‑150‑0310
Spill and Overfill Prevention Equipment and Testing Requirements 340‑150‑0315
Periodic operation and maintenance walkthrough inspections 340‑150‑0320
Corrosion Protection Performance Standards for USTs and Piping 340‑150‑0325
Operation and Maintenance of Corrosion Protection 340‑150‑0350
UST System Repairs 340‑150‑0352
UST System Modifications and Additions 340‑150‑0354
UST System Replacements 340‑150‑0360
Requirements for Internally Lined USTs 340‑150‑0400
General Release Detection Requirements for Petroleum UST Systems 340‑150‑0410
Release Detection Requirements and Methods for Underground Piping 340‑150‑0420
Release Detection Requirements for Hazardous Substance UST Systems 340‑150‑0430
Inventory Control Method of Release Detection 340‑150‑0435
Statistical Inventory Reconciliation Method of Release Detection 340‑150‑0440
Manual Tank Gauging Release Detection Method 340‑150‑0445
Tank Tightness Testing for Release Detection and Investigation 340‑150‑0450
Automatic Tank Gauging Release Detection Method 340‑150‑0465
Interstitial Monitoring Release Detection Method 340‑150‑0470
Other Methods of Release Detection 340‑150‑0500
Reporting Suspected Releases 340‑150‑0510
Suspected Release Investigation and Confirmation Steps 340‑150‑0520
Investigation Due to Off Site Impacts 340‑150‑0540
Applicability to Previously Closed UST Systems 340‑150‑0550
Definitions for OAR 340-150-0555 and 340-150-0560 340‑150‑0555
Compliance Dates for USTs and Piping 340‑150‑0560
Upgrading Requirements for Existing UST Systems 340‑150‑0600
Delegation of Program Administration 340‑150‑0620
Approval of More Stringent Performance Standards
Last Updated

Jun. 8, 2021

Rule 340-150-0500’s source at or​.us