# TRANSMONTAIGNE OPERATING COMPANY L.P. — Contra Costa County, CA

**Citation:** NPMS FIPS 06013 / OPID 30909  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

1.810612 active Crude Oil pipeline miles in Contra Costa County, CA; public NPMS snapshot 2026-07-16.

## Document text

TRANSMONTAIGNE OPERATING COMPANY L.P. (PHMSA OPID 30909) reported 1.810612 active Crude Oil pipeline miles in Contra Costa County, CA (county FIPS 06013) 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: `b0b08b9062c2c7d5232bd39199142e59ddb8e677e58aea634639a02417c4339c`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-25T23:38:33.264Z
- Document slug: `npms-mileage-dd75e988a3a7ab8b9de61aa2`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "06013",
  "stateFips": "06",
  "state": "CA",
  "county": "Contra Costa County",
  "region": "Contra Costa County, CA",
  "operator": {
    "id": "30909",
    "name": "TRANSMONTAIGNE OPERATING COMPANY L.P."
  },
  "commodity": "Crude Oil",
  "mileage": 1.81061175,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 638,
    "rowSha256": "a6d586f4db0999d692e1a673ccdb21f1fe4a62659a0cda7a2a9bb5cef2429aa7"
  },
  "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": "TRANSMONTAIGNE OPERATING COMPANY L.P."
}
```