-
2024
-
8799 Standard - Annual Review, Headquarters
8800 Standard Comprehensive - Gas Distribution, Clark
8801 Gas Transmission Integrity Management, Transmission
-
2023
-
8605 Mobile LNG Inspection
8606 Operator Qualification (OQ) Program Inspection, Headquarters
8607 Natural Gas Drug and Alcohol Program Inspection, Headquarters
8608 Distribution Integrity Management Program
8609 Natural Gas Annual Review, Headquarters
8610 Specialized Inspection, Transmission
8611 Standard Comprehensive - Gas Distribution, Columbia Gorge
8666 Pipe Replacement Plan
-
2022
-
8440 Natural Gas Annual Review, Headquarters
8520 Section 114, Headquarters
-
2021
-
8280 Standard Comprehensive - Gas Distribution, Clark
8281 Operations & Maintenance, Plans & Procedures Review, Headquarters
8282 Public Awareness, Headquarters
8283 Gas Transmission Integrity Management, Transmission
8284 Control Room Management, Headquarters
8285 Pipe Replacement Plan, Headquarters
8286 Standard - Annual Review, Headquarters
LNG, Mobile LNG, (Insp. No. 8287)
-
2020
-
8058 Distribution Integrity Management Program
- Inspection Document: PHMSA Inspection Assistant (IA) Inspection Output Document (IOR)
- Inspection Document: PHMSA Inspection Assistant (IA) Inspection Results (IRR)
- Results of Inspection Letter
8059 Standard Annual Review
8057 Transmission Inspection
- Inspection Document: PHMSA Inspection Assistant (IA) Inspection Output Document (IOR)
- Inspection Document: PHMSA Inspection Assistant (IA) Inspection Results (IRR)
- Inspection Document: Form D
- Results of Inspection Letter
8056 Records Review Field Verification
-
2019
-
7815 Natural Gas Drug and Alcohol Program Inspection, Headquarters
7814 Operator Qualification (OQ) Program Inspection, Headquarters
- Inspection Document: PHMSA Inspection Assistant (IA) Inspection Output Document (IOR)
- Results of Inspection Letter
7805 Mobile LNG Trailer Standard Inspection
- Inspection Document: PHMSA Inspection Assistant (IA) Inspection Output Document (IOR)
- Results of Inspection Letter
7817 Standard - Annual Review
-
2018
-
7580 Records Review - Field Verification (Standard) Gas Distribution Inspection, Clark County
- Result of Inspection Letter
- Inspection Document: PHMSA Form 13 Drug and Alcohol Inspection Form
- Inspection Document: PHMSA Form 15 OQ Field Inspection Protocol
- Inspection Document: PHMSA Inspection Assistant (IA) Inspection Output (IOR)
7568 Gas Transmission Integrity Management (TIMP) Inspection, Headquarters
-
2017
-
7239 Operations and Maintenance (O&M) Manual Review, Headquarters
- Result of Inspection Letter
- Inspection Document: Form V - Intrastate Gas – Procedures and Plan Review
7240 Specialized Inspection, Transmission
- Result of Inspection Letter and Report
- Inspection Document: Form D Intrastate Gas Transmission – Records and Field Inspection
- Inspection Document: PHMSA Form 15 GT OQ Field Inspection (IA Equivalent)
- Inspection Document: PHMSA Form 16 Gas Integrity Management Implementation (IA Equivalent)
- Inspection Document: PHMSA Form 17 Supplemental SCC Questionnaire
- NWN's Response Letter
- UTC Closure Letter
7241 Specialized Inspection, Columbia Gorge
- Result of Inspection Letter and Report
- Inspection Document: PHMSA Form 13 Drug and Alcohol Inspection Form
- Inspection Document: PHMSA Inspection Assistant (IA) Results and Notes Review
- NWN's Response Letter
- UTC Closure Letter
7248 Distribution Integrity Management (DIMP) Inspection, Headquarters
- Result of Inspection Letter
- Inspection Document: PHMSA Inspection Assistant (IA) Results and Notes Review
- Inspection Document: PHMSA Inspection Assistant (IA) Inspection Output (IOR)
7268 Public Awareness (PA) Inspection, Headquarters
-
2016
-
Standard Inspection, Mobile LNG
Control Room Management (CRM), Headquarters
-
2015
-
Standard Inspection, Clark
-
2014
-
Standard Inspection, Columbia Gorge
- Cover letter and report
- Inspection Document: Form C Intrastate Gas Distribution - Records and Field Inspection
- Inspection Document: PHMSA Form 15 OQ Field Inspection Protocol
- NWN response letter
- NWN response letter (amended)
- UTC closure letter
Standard Inspection, Transmission
- Cover letter and report
- Inspection Document: Form D Intrastate Gas Transmission - Records and Field Inspection
- Inspection Document: PHMSA Form 13 Drug and Alcohol Inspection Form
- Inspection Document: PHMSA Form 15 OQ Question Set (IA Equivalent)
- Inspection Document: PHMSA Form 16 Gas Integrity Management Question Set (IA Equivalent)
- NWN response letter
- NWN response letter (amended)
- UTC closure letter
Operator Qualification (OQ) Inspection, Headquarters
Integrity Management (IMP) Inspection, Headquarters
Control Room Management (CRM) Inspection, Headquarters
-
2013
-
Standard Inspection, Mobile LNG
-
2012
-
Standard Inspection, Clark
- Cover letter
- Inspection Document: Form C Intrastate Gas Distribution-Records and Field Inspection
- Inspection Document: PHMSA Form 13 Drug & Alcohol Inspection Form
- Inspection Document: PHMSA Form 15 OQ Field Inspection Form
- Inspection Document: PHMSA Form 16 Gas IMP Field Verification Form
Operations & Maintenance Manual Inspection, Headquarters
- Cover letter and report
- Inspection Document: Form V Intra Gas Procedures and Plan Review
- UTC email to NWN granting extension to respond by 8-6-12
- NWN response letter
- UTC closure letter
Distribution Integrity Management Program (DIMP) Inspection, Headquarters
-
2011
-
- Standard Inspection Columbia Gorge, Docket 110016
-
2010
-
- Standard Inspection Clark county, Docket 100051
-
2008
-
- Standard Inspection Columbia Gorge, Docket 080034
- Follow-up element of commission order and settlement agreement under Docket 060208 (Docket 080328)
- Petition for Exemption, Docket 080292