# GAS TRANSMISSION NORTHWEST LLC — Warning Letter

- **operation:** document
- **citation:** CPF 520070018W
- **title:** GAS TRANSMISSION NORTHWEST LLC — Warning Letter
- **source type:** enforcement
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** historical
- **official:** true
- **published on:** 2007-04-26
- **effective on:** Not available
- **summary:** CLOSED warning letter citing 192.463(a).
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/phmsa-enforcement-520070018w.json
- **markdown:** https://regulus.evalyn.ai/document/phmsa-enforcement-520070018w.md
- **app url:** https://regulus.evalyn.ai/document/phmsa-enforcement-520070018w
- **source url:** https://primis.phmsa.dot.gov/enforcement-data/case/520070018W
**body:**

Warning Letter involving GAS TRANSMISSION NORTHWEST LLC. PHMSA's enforcement data identifies the cited regulation as 192.463(a). The case was opened on 2007-04-26 and is reported as closed as of 2007-04-26. Open the official case record for notices, responses, orders, and the latest status.

Official case documents:

520070018W_Warning Letter_04262007.pdf: https://primis.phmsa.dot.gov/enforcement-documents/520070018W/520070018W_Warning%20Letter_04262007.pdf

520070018w_warning letter_04262007_text.pdf: https://primis.phmsa.dot.gov/enforcement-documents/520070018W/520070018w_warning%20letter_04262007_text.pdf

520070018w_warning letter_04262007_text.pdf

U. s. ftepattmettt
of Transportation
Pipeline ond
Hazardous Materials Sofet//
Adntinlstrotlon
t23QO Vl. Dekote Ave, Sate 110
Lekewood, CO BD228
WARNING LETTER
CERTIFIED MAIL - RETURN RECEIPT RE UESTED
April 26, 2007
Mr. Ross T. Parker
Regional Director
Gas Transmission-Northwest
Suite 900
1400 SW 5' Avenue
Portland, OR 97201
SgÃr To CBMPt. tANtT. REGtsTRY
Hardcopy ElectromcsllyW
tt of Copica~i Date ~4 jO'7
CPF 5-2007-0018W
Dear Mr. Parker:
On January 30 through August 28 2006, a representative of the Pipeline and Hazardous Materials
Safety Administration (PHMSA), pursuant to Chapter 601 of 49 United States Code, inspected
your pipeline facilities and supporting records in the State of Oregon.
As a result of the inspection, it appears that you have committed probable violations of the
Pipeline Safety Regulations, Title 49, Code of Federal Regulations. The item inspected and dte
probable violation is:
f1192. 463 Kxternal corrosion control: Cathodic protection,
(a) Each cathodic protection system required hy this subpart must provide a level
of cathodic protection that complies with one or more of the applicable criteria
contained in Appendix D of this part. If none of these criteria is applicable, the
cathodic protection system must provide a level of cathodic protection at least equal
to that provided by compliance with one or more of these criteria.
For the period inspected (2004 to 2006), Gas Transmission-Northwest's (GTN) annual
cathodic protection survey records failed to evidence adequate pipe-to-soil potential
readings (P/S) for two consecutive years as fol]ows:



Location or MP
Station 10 ¹16
st q l0ll30
Station 12 ¹17
Station 12 ¹18
Coyote Springs. Meter
Station ¹6
MP 538. 5
MP 540. 4
MP 548. 9
CY 2005 P/S (V)
On/Off/De olarized'
0. 815/0. 737/none
0. 689/0. 684/none
0. 764/0. 762/none
0. 776/0. 774/none
0. 700/0. 617/0. 606
C Y 2006 P/S (V)
On/Off/De olarized"
0. 653/0. 570/none
0. 653/0. 570/none
0. 808/0. 675/none
0. 730/0. 650/0. 606
0. 738/0. 689/none
0. 75770. 705/none
0. 742/0. 727/none
0. 642/0. 460/none
0. 674/0. 472/none
0. 692/0. 521/none
* "none Entries mean no depolarized test performed.
Under 49 United States Code, ( 60122, you are subject to a civil penalty not to exceed $100, 000
for each violation for each day the violation persists up to a maximum of $1, 000, 000 for any
related series of violations. We have reviewed the circumstances and supporting documents
involved in this case, and have decided not to conduct additional enforcement action or penal'
assessment proceedings at this time. We advise you to correct the item(s) identified in this letter.
Failure to do so will result in OTN being subject to additional enforccntent action.
No reply to this letter is required. If you Moose to reply, in yrjur correspondence please refer to
5-2007-0018W, 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).
Sincerely,
Chris oidal
Director, Western Region
Pipeline and Hazardous Materials Safety Administration
cc: PFIP-60 Compliance Registry
PHP-500 C. Allen (¹117351 P. 116792)
- **truncated:** false
- **body characters:** 4190