# ALYESKA PIPELINE SERVICE CO — North Slope Borough, AK

**Citation:** NPMS FIPS 02185 / OPID 26149  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

139.468081 active Natural Gas pipeline miles in North Slope Borough, AK; public NPMS snapshot 2026-07-16.

## Document text

ALYESKA PIPELINE SERVICE CO (PHMSA OPID 26149) reported 139.468081 active Natural Gas pipeline miles in North Slope Borough, AK (county FIPS 02185) 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: `ef071385a18ef853be8cf544380ebf283f38ba05b8021f05fffacbd429b7aa41`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-27T07:43:59.865Z
- Document slug: `npms-mileage-d490b6d7825c34ac89fc0ddc`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "02185",
  "stateFips": "02",
  "state": "AK",
  "county": "North Slope Borough",
  "region": "North Slope Borough, AK",
  "operator": {
    "id": "26149",
    "name": "ALYESKA PIPELINE SERVICE CO"
  },
  "commodity": "Natural Gas",
  "mileage": 139.46808145,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 249,
    "rowSha256": "a8a15f7c5f44d07c8ddd3f8daa67ca9811e78df4adb83bfda0c77030176414f3"
  },
  "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": "ALYESKA PIPELINE SERVICE CO"
}
```