I202002 LOC

Idaho Public Utilities Commission Brad Little,Govemor
PO Box 83720,Boise,ID 83720-0074 Paul Kjepander,Commissioner
Kristine Raper,Commissioner
Eric Anderson,Commissioner
Letter of Concern
June 19, 2020 Report# 1202002
Pat Darras
Intermountain Gas Company
400 N 41h St.
Bismarck, ND 58501
Dear Mr. Darras:
On June 8-10, 2020, representatives of the Idaho Public Utilities Commission, Pipeline Safety,
pursuant to Chapter 601 of Title 49, United States Code, conducted an onsite specialized field
inspection in your Nampa District.
As a result of the inspection, it appears there are area(s) of concern that do not fully meet the
intent of the pipeline safety regulations Title 49, Code of Federal Regulations, Part 192 for
calendar year 2020.
The item(s) listed below are of concern:
1. § 192.481 (a)(b)(c) Atmospheric corrosion control: monitoring. (a) Each operator must
inspect each pipeline or portion of pipeline that is exposed to the atmosphere for
evidence of atmospheric corrosion. (b) During inspections the operator must give
particular attention to pipe at soil-to-air interfaces, under thermal insulation,
under disbanded coatings, at pipe supports, in splash zones, at deck
penetrations, and in spans over water. (c) If atmospheric corrosion is found
during an inspection, the operator must provide protection against the corrosion
as required by § 192.479.
2. Cascade Natural Gas Corporation-OPS 610 (Sec 2.1, 2.2 and 2.2.5), 2.1-reads:
Transmission and distribution pipelines shall be patrolled, as necessary, to
observe factors affecting safe operation and to enable correction to potentially
hazardous conditions. In addition to visual evidence of leakage, patrol
considerations should include observation and reporting of potential hazards.
2.2-reads: Factors affecting safe operation include: 2.2.5-reads: Exposed pipe
conditions including atmospheric corrosion, physical deterioration of exposed
11331 W.Chinden Blvd.,Building 8,Suite 201-A,Boise ID 83714
Telephone:[phone] Facsimile:[phone]

piping, pipeline spans, and structural pipeline supports such as bridges, pilings,
headwalls, casings, and foundations.
Pipeline patrol ACP317006 appeared to have no hangars, possible contact with bridge and
coating/wrap deteriorated at the interface with the bridge.
The above mentioned items were brought to the attention of your representatives during the
onsite inspections. We would request that you review these matters and respond in writing
within 30 days regarding the above issue including any planned corrective actions.
If you have any questions concerning this notice, please contact me at [phone]. All
written responses should be addressed to me at: 11311 W Chinden Blvd, Ste 201-A, Boise,
Idaho 83714 or you can fax your response to [phone].
Because of the good faith that you have exhibited up to this time, we expect that you will take
action to bring your program into compliance with pipeline safety regulations.
jWe a preciate your attention to this matter and your effort to promote pipeline safety.
Sin el ,
9r in M Imer
Pipeline Safety, Program Manager
Idaho Public Utility Commission
(GC NAMPA FIELD AUDIT LETTER OF CONCERN-PAGE 2