# NORTHWEST PIPELINE LLC — Columbia County, OR

**Citation:** NPMS FIPS 41009 / OPID 13845  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

1.540657 active Natural Gas pipeline miles in Columbia County, OR; public NPMS snapshot 2026-07-16.

## Document text

NORTHWEST PIPELINE LLC (PHMSA OPID 13845) reported 1.540657 active Natural Gas pipeline miles in Columbia County, OR (county FIPS 41009) 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: `d8f0297886a0257580153e9446c80c3bea1db6542ff7ea7f8d6da1d81213a1ff`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-26T12:01:15.156Z
- Document slug: `npms-mileage-4e222e649e97cb5c008979fb`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "41009",
  "stateFips": "41",
  "state": "OR",
  "county": "Columbia County",
  "region": "Columbia County, OR",
  "operator": {
    "id": "13845",
    "name": "NORTHWEST PIPELINE LLC"
  },
  "commodity": "Natural Gas",
  "mileage": 1.5406572,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 9864,
    "rowSha256": "6419584ab98befdaf74d6509b4f619e65b1b9d75281823cdff75dfb710ef197d"
  },
  "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": "NORTHWEST PIPELINE LLC"
}
```