# GAS TRANSMISSION NORTHWEST LLC — Jefferson County, OR

**Citation:** NPMS FIPS 41031 / OPID 15014  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

66.545104 active Natural Gas pipeline miles in Jefferson County, OR; public NPMS snapshot 2026-07-16.

## Document text

GAS TRANSMISSION NORTHWEST LLC (PHMSA OPID 15014) reported 66.545104 active Natural Gas pipeline miles in Jefferson County, OR (county FIPS 41031) in the public NPMS summary snapshot dated 2026-07-16. The snapshot includes active assets only and excludes permanently abandoned assets. Exact pipeline locations and restricted NPMS GIS data are not included.

## Provenance

- Official: Yes
- Source: <https://www.npms.phmsa.dot.gov/Documents/NPMS_Active_Pipe_County_Mileage.xlsx>
- Source ID: `npms-public-summaries`
- SHA-256: `243c6fe4f3bbaddfabaf631fe89de378e8556738689a464a1bc818b66fd1e879`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-26T02:27:41.195Z
- Document slug: `npms-mileage-a04951d2bf0aefdc410de1f4`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "41031",
  "stateFips": "41",
  "state": "OR",
  "county": "Jefferson County",
  "region": "Jefferson County, OR",
  "operator": {
    "id": "15014",
    "name": "GAS TRANSMISSION NORTHWEST LLC"
  },
  "commodity": "Natural Gas",
  "mileage": 66.54510417,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 9878,
    "rowSha256": "66b28996f90b14a84f3c37bbf39dd218a3896d9369821c95a239cc8cf0f3396a"
  },
  "citedSections": [
    "191.29"
  ],
  "caveat": "Public aggregate snapshot only. It is not a complete representation of exact pipeline locations, may be updated, and is not an agency finding about facility condition.",
  "jurisdiction": "US",
  "operatorName": "GAS TRANSMISSION NORTHWEST LLC"
}
```