OAR 340-150-0168
General Permit Requirements for Decommissioning an UST System by Permanent Closure or Change-in-Service

(1)

At least 30 days before beginning decommissioning by permanent closure or change-in- service, the owner and permittee, or the licensed service provider on behalf of the owner and permittee, must submit to DEQ a general permit registration form and notice of intent to decommission the UST or to complete a change-in-service. DEQ may allow a shorter notice period on a case-by-case basis.

(2)

DEQ will not issue a general permit registration certificate to the permittee.

(3)

The owner and permittee, or the licensed service provider on behalf of the owner, must submit to DEQ for approval a written site assessment plan that meets the requirements of OAR 340-150-0180 (Site Assessment Requirements)(4) if the owner or permittee is proposing to:

(a)

Permanently close the UST in-place and fill it with an inert material;

(b)

Use the UST to store an unregulated substance (i.e. change-in-service);

(c)

Permanently close an UST that contains a hazardous substance other than petroleum.

(4)

If the UST system will be used to store an unregulated substance without removing the tank, the owner and permittee must provide information to DEQ on the proposed use of the UST system with the notice required under section (1) of this rule. Under no circumstance may an UST or any underground piping that has held a regulated substance be used to store water for consumption by humans or livestock or for the watering of feed crops.

(5)

At least three working days before beginning the decommissioning, the owner and permittee, or the licensed service provider on behalf of the owner and permittee, must notify DEQ of the confirmed date and time decommissioning will begin to allow observation by DEQ.

(6)

The permittee must empty the UST system and clean it by removing all liquids and accumulated sludge. The permittee must recycle or dispose of the USTs and removed materials in accordance with all federal, state and local requirements. If any equipment (i.e., tanks or piping) are to be disposed of instead of recycled, the disposal location must be approved in advance in writing by DEQ.
One or more of the following cleaning and closure procedures may be used:

(a)

American Petroleum Institute RP 1604, “Closure of Underground Petroleum Storage Tanks”;

(b)

American Petroleum Institute Publication 2015, “Safe Entry and Cleaning of Petroleum Storage Tanks, Planning and Managing Tank Entry From Decommissioning Through Recommissioning”;

(c)

American Petroleum Institute RP 1631, “Interior Lining and Periodic Inspection of Underground Storage Tanks” (contains guidance information); or

(d)

The National Institute for Occupational Safety and Health (NIOSH) “Criteria for a Recommended Standard: Working in Confined Space” (Publication No. 80-106) (guidance for conducting safe closure procedures at some hazardous substance USTs).

(7)

The permittee must perform a site assessment that meets the requirements of OAR 340-150-0180 (Site Assessment Requirements) after the UST system and all ancillary equipment have been removed from the tank pit. If approval of a site assessment plan was required under section (3) of this rule, the site assessment must be conducted in accordance with DEQ’s approval.

(8)

Within 30 days after completing the field work or other period approved by DEQ, the permittee must complete and submit to DEQ an underground storage tank decommissioning checklist and site assessment report (OAR 340-150-0180 (Site Assessment Requirements)) signed by the owner, permittee and service provider.

(9)

Except as provided by OAR 340-150-0156 (Performance of UST Services by Owners or Permittees), all UST services must be performed under the supervision of a person licensed as a DEQ UST services supervisor who is working for a company licensed as a DEQ UST services service provider in accordance with OAR chapter 340, division 160.

(10)

The UST system decommissioning will be considered complete when DEQ approves the completed decommissioning checklist and site assessment report. DEQ will provide a letter to the permittee indicating that the decommissioning is complete.

(11)

Until DEQ approves the reports under section (10), the permittee must pay all annual compliance fees when due and any applicable late fees.

(12)

The permittee must maintain records of permanent closure, including the site assessment report and associated documents, for three years after the decommissioning checklist and report have been approved. If the UST facility is sold within this time period, the permittee must provide these records to the new property owner (OAR 340-150-0140 (Requirements for Sellers of USTs)).
[Note: Publications referenced are available from DEQ or from the publisher.]

Source: Rule 340-150-0168 — General Permit Requirements for Decommissioning an UST System by Permanent Closure or Change-in-Service, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=340-150-0168.

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 340-150-0168’s source at or​.us