-
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