Intermountain Gas 260602 IPUC Form 1 - Nampa Field Audit

IPUC Pipeline Safety Inspection
Inspector(s): Perkins, Green, Brooks Date(s): 260526, 260527, 260528, 260601, 260602
Company/Owner: Intermountain Gas Company Unit/OPID: 08160
(IGC)
Standard: ® Training: ❑ TIMP/DIMP: ❑ OQ: ❑
Incident: ❑ Damage Prevention: ❑ Drug & Alcohol: ❑ Inspection Days: 10
Insuection Summary
Audit consisted of IPUC inspectors Brooks, Perkins, and Green inspecting field installed equipment for the
Nampa, Idaho inspection unit. The PHMSA IA question set and IGC equipment listing were used as a
guide throughout the audit to ensure all areas were completed.
May 26- 27, 2026:
(2.0 Standard AG) (1.0 Standard BP) (2.0 Standard JB)
Met with IGC company representatives in the Nampa district office for in briefing to begin field audit and
reviewed OQ records for all personnel taking part in the inspection.
Regulator Stations: 18 regulator stations were inspected for proper operation, regulator lock-up, relief
device operation, cathodic protection pipe-to-soil readings, pipe-to soil interface wrap protection, station
warning signs and right-of-way clearances.
25 casing-to-carrier isolation checks, 4 cathodic protection rectifiers, 8 pipeline patrols, 19
emergency/isolation valves and 37 HPSSs were inspected for proper operation.
An exit briefing was performed following the district inspection with field personnel.
Discrepancies
Regulator Station 48371-RS-59980, the primary regulator failed to achieve lock-up due to internal oil
accumulation on the regulator diaphragm. Regulator station 48283-RS-59707, the primary regulator failed
to achieve lock-up due to debris found on the regulator seat. Regulator Station 48367-RS-60282 had a
damaged fence with contact and potential short to the piping.
May 28,June 1-2, 2026: (2.5 Compliance JB) (2.5 Compliance AG)
Initiated audit documentation and requested records for discrepancies. Completed audit forms: PHMSA IA
question set with OQ protocol 9, IPUC Form 1, Post-Inspection Preliminary Written Findings, wrote
NOPV, initiated complaint. MDU Compliance Manager Colby Lundstrom was provided written exit
briefing.
Corrective Action Required: ® Yes ❑ No Compliance Letter#: NOPV I202608
Lead Inspector: Brooks Date: Reviewer: N/A Date:
260602
Signature: Signature:
IPUC Form 1 Rev. 12/08/2025