# COLONIAL PIPELINE CO — Montgomery County, MD

**Citation:** NPMS FIPS 24031 / OPID 2552  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

42.634735 active Non-HVL Petroleum Product pipeline miles in Montgomery County, MD; public NPMS snapshot 2026-07-16.

## Document text

COLONIAL PIPELINE CO (PHMSA OPID 2552) reported 42.634735 active Non-HVL Petroleum Product pipeline miles in Montgomery County, MD (county FIPS 24031) 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: `5f46d3ea053df844653cd27b4fe81148a9a54a84c584844f0d0048209a1fb83d`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-26T16:23:20.549Z
- Document slug: `npms-mileage-a71378bc01a62572882380b4`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "24031",
  "stateFips": "24",
  "state": "MD",
  "county": "Montgomery County",
  "region": "Montgomery County, MD",
  "operator": {
    "id": "2552",
    "name": "COLONIAL PIPELINE CO"
  },
  "commodity": "Non-HVL Petroleum Product",
  "mileage": 42.63473485,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 5507,
    "rowSha256": "ed63e2f96d240c02fd9dd674bf5430c3cf254e8dc93b641cfcb03edc591e705a"
  },
  "citedSections": [
    "195.61"
  ],
  "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": "COLONIAL PIPELINE CO"
}
```