# COLUMBIA GAS TRANSMISSION, LLC — Baltimore County, MD

**Citation:** NPMS FIPS 24005 / OPID 2616  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

52.046934 active Natural Gas pipeline miles in Baltimore County, MD; public NPMS snapshot 2026-07-16.

## Document text

COLUMBIA GAS TRANSMISSION, LLC (PHMSA OPID 2616) reported 52.046934 active Natural Gas pipeline miles in Baltimore County, MD (county FIPS 24005) 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: `0dff677d4f72e42fb41914e209cc715ab49536dbe60a9dd7b532e08b36c3e591`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-25T16:58:24.961Z
- Document slug: `npms-mileage-26db1368d4d4864b7bd1ac04`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "24005",
  "stateFips": "24",
  "state": "MD",
  "county": "Baltimore County",
  "region": "Baltimore County, MD",
  "operator": {
    "id": "2616",
    "name": "COLUMBIA GAS TRANSMISSION, LLC"
  },
  "commodity": "Natural Gas",
  "mileage": 52.04693367,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 5478,
    "rowSha256": "35b70042baa18be4a9630085b9b3c2684e84546d9731bbb27e27fe7be93679c1"
  },
  "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"
}
```