# NORTHWEST NATURAL GAS CO — Notice of Amendment

- **operation:** document
- **citation:** CPF 12024041NOA
- **title:** NORTHWEST NATURAL GAS CO — Notice of Amendment
- **source type:** enforcement
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** historical
- **official:** true
- **published on:** 2024-05-07
- **effective on:** Not available
- **summary:** CLOSED notice of amendment citing 192.12(b)(1).
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-enforcement-12024041noa.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-enforcement-12024041noa.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-enforcement-12024041noa
- **source url:** https://primis.phmsa.dot.gov/enforcement-data/case/12024041NOA
**body:**

Notice of Amendment involving NORTHWEST NATURAL GAS CO. PHMSA's enforcement data identifies the cited regulation as 192.12(b)(1). The case was opened on 2024-05-07 and is reported as closed as of 2024-08-20. Open the official case record for notices, responses, orders, and the latest status.

Official case documents:

12024041NOA_Closure Letter_08202024_(23-264007).pdf: https://primis.phmsa.dot.gov/enforcement-documents/12024041NOA/12024041NOA_Closure%20Letter_08202024_(23-264007).pdf

12024041NOA_Closure Letter_08202024_(23-264007)_text.pdf: https://primis.phmsa.dot.gov/enforcement-documents/12024041NOA/12024041NOA_Closure%20Letter_08202024_(23-264007)_text.pdf

12024041NOA_Notice of Amendment (Amended)_06272024_(23-264007).pdf: https://primis.phmsa.dot.gov/enforcement-documents/12024041NOA/12024041NOA_Notice%20of%20Amendment%20(Amended)_06272024_(23-264007).pdf

12024041NOA_Notice of Amendment (Amended)_06272024_(23-264007)_text.pdf: https://primis.phmsa.dot.gov/enforcement-documents/12024041NOA/12024041NOA_Notice%20of%20Amendment%20(Amended)_06272024_(23-264007)_text.pdf

12024041NOA_Notice of Amendment_05072024_(23-264007).pdf: https://primis.phmsa.dot.gov/enforcement-documents/12024041NOA/12024041NOA_Notice%20of%20Amendment_05072024_(23-264007).pdf

12024041NOA_Notice of Amendment_05072024_(23-264007)_text.pdf: https://primis.phmsa.dot.gov/enforcement-documents/12024041NOA/12024041NOA_Notice%20of%20Amendment_05072024_(23-264007)_text.pdf

12024041NOA_Operator Response to Notice (Supplemental)_07272024_(23-264007).pdf: https://primis.phmsa.dot.gov/enforcement-documents/12024041NOA/12024041NOA_Operator%20Response%20to%20Notice%20(Supplemental)_07272024_(23-264007).pdf

12024041NOA_Operator Response to Notice_05162024_(23-264007).pdf: https://primis.phmsa.dot.gov/enforcement-documents/12024041NOA/12024041NOA_Operator%20Response%20to%20Notice_05162024_(23-264007).pdf

12024041NOA_Notice of Amendment_05072024_(23-264007)_text.pdf

NOTICE OF AMENDMENT
OVERNIGHT EXPRESS DELIVERY
May 7, 2024
Mr. Joseph Karney
Vice President, Engineering & Utility Operations
Northwest Natural Gas Company
250 SW Taylor Street
Portland, Oregon 97204
CPF 1-2024-041-NOA
Dear Mr. Karney:
From August 7 to August 11, 2023 of the onsite inspection, a representative of the Pipeline and
Hazardous Materials Safety Administration (PHMSA) pursuant to Chapter 601 of 49 United States
Code (U.S.C.) inspected Northwest Natural Gas Co.’s (Northwest) Mist Underground Natural Gas
Storage in Columbia County, Oregon.
As a result of the inspection, PHMSA has identified an apparent inadequacy found within
Northwest’s plans or procedures. The item inspected and the inadequacy is described below:
1. § 192.12 Underground natural gas storage facilities.
(a) ….
(b) Depleted hydrocarbon and aquifer reservoir UNGSFs.
(1) Each UNGSF that uses a depleted hydrocarbon reservoir or an
aquifer reservoir for natural gas storage and was constructed after July
18, 2017, must meet all provisions of API RP 1171 (incorporated by
reference, see § 192.7), and paragraphs (c) and (d) of this section, prior
to commencing operations.
Northwest’s written construction procedures for underground natural gas storage were inadequate
to assure safe operation of a pipeline facility. Specifically, Northwest failed to develop and follow
a construction procedure for the reuse of tubing during reworking of tubing and packer wells
pursuant to American Petroleum Institute Recommended Practice 1171 (2015) (API RP 1171),
Sections 6.3.6 and 11.2.11
.



API RP 1171, Section 6.3.6 - Handling requires that “[c]asing shall be stored, transported, lifted
and installed as specified by the manufacturer and in accordance with API 5C1.” Section 7 of API
RP 5C1 includes guidance related to the inspection of used tubing.
API RP 1171, Section 11.2.1 - Construction, Operation, and Maintenance Procedures requires in
part that operators “… develop and follow procedures for the construction, operation, and
maintenance of natural gas storage wells and reservoirs to establish and maintain functional
integrity.”
During the inspection, PHMSAs determined that well 13b-23-65 had been reworked. PHMSA
reviewed records and procedures regarding the removal and reinstallation of tubing on the well
and found that the procedures did not require the inspection or replacement of the original tubing
during reworking tubing and packer wells.
Therefore, Northwest’s written procedures required by § 192.12(b)(1) pursuant to meeting the
provisions of API RP Sections 6.3.6 and 11.2.1 were inadequate. Northwest must revise its
procedures to address the deficiency outlined above.
Response to this Notice
This Notice is provided pursuant to 49 U.S.C. § 60108(a) and 49 C.F.R. § 190.206. Enclosed as
part of this Notice is a document entitled Response Options for Pipeline Operators in Enforcement
Proceedings.
Please refer to this document and note the response options. Be advised that all material you
submit in response to this enforcement action is subject to being made publicly available. If you
believe that any portion of your responsive material qualifies for confidential treatment under 5
U.S.C. § 552(b), along with the complete original document you must provide a second copy of
the document with the portions you believe qualify for confidential treatment redacted and an
explanation of why you believe the redacted information qualifies for confidential treatment under
5 U.S.C. § 552(b).
Following the receipt of this Notice, you have 30 days to submit written comments, revised
procedures, or a request for a hearing under § 190.211. If you do not respond within 30 days of
receipt of this Notice, this constitutes a waiver of your right to contest the allegations in this Notice
and authorizes the Associate Administrator for Pipeline Safety to find facts as alleged in this Notice
without further notice to you and to issue an Order Directing Amendment. If your plans or
procedures are found inadequate as alleged in this Notice, you may be ordered to amend your plans
or procedures to correct the inadequacies (49 C.F.R. § 190.206). If you are not contesting this
Notice, we propose that you submit your amended procedures to my office within 30 days of
receipt of this Notice. This period may be extended by written request for good cause. Once the
inadequacies identified herein have been addressed in your amended procedures, this enforcement
action will be closed.
It is requested (not mandated) that Northwest Natural Gas maintain documentation of the safety
improvement costs associated with fulfilling this Notice of Amendment (preparation/revision of
plans, procedures) and submit the total to Robert Burrough, Director, Eastern Region, Pipeline and



Hazardous Materials Safety Administration. In correspondence concerning this matter, please refer
to CPF 1-2024-041-NOA and, for each document you submit, please provide a copy in electronic
format whenever possible.
Sincerely,
Robert Burrough
Director, Eastern Region
Pipeline and Hazardous Materials Safety Administration
Enclosure: Response Options for Pipeline Operators in Enforcement Proceedings
1 API RP 1171 Section 11.2.1 - Construction, Operation, and Maintenance Procedures
The operator shall develop and follow procedures for the construction, operation, and maintenance of natural gas
storage wells and reservoirs to establish and maintain functional integrity. When practicable, the operator’s procedures
should incorporate applicable industry recommended practices that promote personal and process safety, resource
conservation, environmental stewardship, mechanical integrity, and reliable performance.
Procedures shall be in place prior to the development of a new storage facility. The procedures should address the
minimum requirements for construction including drilling and other well entry work, reservoir integrity monitoring
and management, O&M, emergency response, control room communications and responses, personnel safety, safety
management systems, and site-specific procedures determined to be necessary by the operator.
Programs should integrate storage well and reservoir elements so that procedures and programs work together to
promote the functional integrity of the storage facility.
The operator should integrate natural gas storage procedures with regulatory-required procedures covering pipeline
facilities where possible rather than creating storage-specific documents. The operator might already have in place
procedures for operation and maintenance, emergency response, integrity management, control room
communications, qualification of personnel, management of change (MOC), and other procedures covering pipeline
facilities. Specific operations related to natural gas storage wells and reservoirs requiring procedures include but are
not limited to drilling, well workover, and reservoir integrity monitoring and management programs.
A procedure should be written in clear language with enough detail to allow a person with appropriate training and
experience to follow the procedure and achieve the desired objectives on a consistent basis.

12024041NOA_Notice of Amendment (Amended)_06272024_(23-264007)_text.pdf

AMENDED NOTICE OF AMENDMENT
OVERNIGHT EXPRESS DELIVERY
June 27, 2024
Mr. Joseph Karney
Vice President, Engineering & Utility Operations
Northwest Natural Gas Company
250 SW Taylor Street
Portland, Oregon 97204
CPF 1-2024-041-NOA
Dear Mr. Karney:
From August 7 to August 11, 2023 of the onsite inspection, a representative of the Pipeline and
Hazardous Materials Safety Administration (PHMSA) pursuant to Chapter 601 of 49 United States
Code (U.S.C.) inspected Northwest Natural Gas Co.’s (Northwest) Mist Underground Natural Gas
Storage in Columbia County, Oregon.
As a result of the inspection, PHMSA has identified an apparent inadequacy found within
Northwest’s plans or procedures. This Amended Notice replaces the Notice that was previously
issued on May 7, 2024. The item inspected and the inadequacy is described below:
1. § 192.12 Underground natural gas storage facilities.
(a) ….
(b) Depleted hydrocarbon and aquifer reservoir UNGSFs.
(1) Each UNGSF that uses a depleted hydrocarbon reservoir or an
aquifer reservoir for natural gas storage and was constructed after July
18, 2017, must meet all provisions of API RP 1171 (incorporated by
reference, see § 192.7), and paragraphs (c) and (d) of this section, prior
to commencing operations.
Northwest’s written construction procedures for underground natural gas storage were inadequate
to assure safe operation of a pipeline facility. Specifically, Northwest failed to develop and follow
a construction procedure for the reuse of tubing during reworking of tubing and packer wells
pursuant to American Petroleum Institute Recommended Practice 1171 (2015) (API RP 1171),



Sections 6.3.6 and 11.2.1.
1
API RP 1171, Section 6.3.6 - Handling requires that “[c]asing shall be stored, transported, lifted
and installed as specified by the manufacturer and in accordance with API 5C1.” Section 7 of API
RP 5C1 includes guidance related to the inspection of used tubing.
API RP 1171, Section 11.2.1 - Construction, Operation, and Maintenance Procedures requires in
part that operators “… develop and follow procedures for the construction, operation, and
maintenance of natural gas storage wells and reservoirs to establish and maintain functional
integrity.”
During the inspection, PHMSA determined that well 13bc-34-75 had been reworked. In
Northwest's October 3, 2023 response to PHMSA’s verbal exit briefing report, Northwest stated:
NW Natural would like to provide clarification on its previous response.
Regarding well 13bc-34-75, the 2023 workover operations did not include
installation of new tubing. The existing 7” 23# K-55 SMAX was ran back into
the hole at which each connection was made up in accordance with the
manufacturer recommended optimal make up torque.
PHMSA reviewed records and procedures regarding the removal and reinstallation of tubing on
the well and found that the procedures did not require the inspection or replacement of the original
tubing during reworking tubing and packer wells.
Therefore, Northwest’s written procedures required by § 192.12(b)(1) pursuant to meeting the
provisions of API RP Sections 6.3.6 and 11.2.1 were inadequate. Northwest must revise its
procedures to address the deficiency outlined above.
Response to this Notice
This amended Notice is issued in accordance with 49 U.S.C. § 60108(a) and 49 C.F.R. §
190.206. Any response you may have submitted to the original Notice is no longer applicable.
You must respond as set forth below.
Enclosed as part of this Notice is a document entitled Response Options for Pipeline Operators in
Enforcement Proceedings.
Enclosed as part of this Notice is a document entitled Response Options for Pipeline Operators in
Enforcement Proceedings. Please refer to this document and note the response options. Be advised
that all material you submit in response to this enforcement action is subject to being made publicly
available. If you believe that any portion of your responsive material qualifies for confidential
treatment under 5 U.S.C. § 552(b), along with the complete original document you must provide
a second copy of the document with the portions you believe qualify for confidential treatment
redacted and an explanation of why you believe the redacted information qualifies for confidential
treatment under 5 U.S.C. § 552(b).
Following the receipt of this Notice, you have 30 days to submit written comments, revised



procedures, or a request for a hearing under § 190.211. If you do not respond within 30 days of
receipt of this Notice, this constitutes a waiver of your right to contest the allegations in this Notice
and authorizes the Associate Administrator for Pipeline Safety to find facts as alleged in this Notice
without further notice to you and to issue an Order Directing Amendment. If your plans or
procedures are found inadequate as alleged in this Notice, you may be ordered to amend your plans
or procedures to correct the inadequacies (49 C.F.R. § 190.206). If you are not contesting this
Notice, we propose that you submit your amended procedures to my office within 30 days of
receipt of this Notice. This period may be extended by written request for good cause. Once the
inadequacies identified herein have been addressed in your amended procedures, this enforcement
action will be closed.
It is requested (not mandated) that Northwest Natural Gas maintain documentation of the safety
improvement costs associated with fulfilling this Notice of Amendment (preparation/revision of
plans, procedures) and submit the total to Robert Burrough, Director, Eastern Region, Pipeline and
Hazardous Materials Safety Administration. In correspondence concerning this matter, please refer
to CPF 1-2024-041-NOA and, for each document you submit, please provide a copy in electronic
format whenever possible.
Sincerely,
Robert Burrough
Director, Eastern Region
Pipeline and Hazardous Materials Safety Administration
Enclosure: Response Options for Pipeline Operators in Enforcement Proceedings
1 API RP 1171 Section 11.2.1 - Construction, Operation, and Maintenance Procedures
The operator shall develop and follow procedures for the construction, operation, and maintenance of natural gas
storage wells and reservoirs to establish and maintain functional integrity. When practicable, the operator’s procedures
should incorporate applicable industry recommended practices that promote personal and process safety, resource
conservation, environmental stewardship, mechanical integrity, and reliable performance.
Procedures shall be in place prior to the development of a new storage facility. The procedures should address the
minimum requirements for construction including drilling and other well entry work, reservoir integrity monitoring
and management, O&M, emergency response, control room communications and responses, personnel safety, safety
management systems, and site-specific procedures determined to be necessary by the operator.
Programs should integrate storage well and reservoir elements so that procedures and programs work together to
promote the functional integrity of the storage facility.
The operator should integrate natural gas storage procedures with regulatory-required procedures covering pipeline
facilities where possible rather than creating storage-specific documents. The operator might already have in place
procedures for operation and maintenance, emergency response, integrity management, control room
communications, qualification of personnel, management of change (MOC), and other procedures covering pipeline



facilities. Specific operations related to natural gas storage wells and reservoirs requiring procedures include but are
not limited to drilling, well workover, and reservoir integrity monitoring and management programs.
A procedure should be written in clear language with enough detail to allow a person with appropriate training and
experience to follow the procedure and achieve the desired objectives on a consistent basis.

12024041NOA_Closure Letter_08202024_(23-264007)_text.pdf

Via Email Only: Joseph.Karney@nwnatural.com
August 20, 2024
Mr. Joseph Karney
Vice President, Engineering & Utility Operations
Northwest Natural Gas Company
250 SW Taylor Street
Portland, Oregon 97204
CPF 1-2024-041-NOA
Dear Mr. Karney:
On August 7 to August 11, 2023, a representative from the Pipeline and Hazardous Materials
Safety Administration (PHMSA), pursuant to chapter 601 of 49 United States Code, conducted an
on-site pipeline safety inspection of Northwest Natural Gas Co.’s (Northwest) procedures in
Columbia County, Oregon. As a result of the inspection, Northwest was issued a Notice of
Amendment on May 7, 2024, and an Amended Notice on June 27, 2024, which proposed
amendment of your procedures.
Northwest submitted its amended procedures on July 24, 2024. My staff reviewed the amended
procedures, and it appears that the inadequacies outlined in this Notice of Amendment have been
corrected.
This letter is to inform you no further action is necessary and this case is now closed. Thank you
for your cooperation.
Sincerely,
Robert Burrough
Director, Eastern Region
Pipeline and Hazardous Materials Safety Administration
Cc: Ryan Truair ryan.truair@nwnatural.com
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