# COLUMBIA GAS TRANSMISSION, LLC — Allegany County, MD

**Citation:** NPMS FIPS 24001 / OPID 2616  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

36.354021 active Natural Gas pipeline miles in Allegany County, MD; public NPMS snapshot 2026-07-16.

## Document text

COLUMBIA GAS TRANSMISSION, LLC (PHMSA OPID 2616) reported 36.354021 active Natural Gas pipeline miles in Allegany County, MD (county FIPS 24001) 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: `a645e8ab4525fdf55772d14d96c083e104c3daabd63568157098e77c776b1b75`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-27T06:42:57.124Z
- Document slug: `npms-mileage-7d69f663be04bfb15cf2c1f1`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "24001",
  "stateFips": "24",
  "state": "MD",
  "county": "Allegany County",
  "region": "Allegany County, MD",
  "operator": {
    "id": "2616",
    "name": "COLUMBIA GAS TRANSMISSION, LLC"
  },
  "commodity": "Natural Gas",
  "mileage": 36.35402081,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 5471,
    "rowSha256": "1390cc11a99778acc01023def55bba3a7640eebe203d874b871efcf1d1f9c501"
  },
  "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": "COLUMBIA GAS TRANSMISSION, LLC"
}
```