# 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

6.263972 active Non-HVL Petroleum Product pipeline miles in Contra Costa County, CA; public NPMS snapshot 2026-07-16.

## Document text

TRANSMONTAIGNE OPERATING COMPANY L.P. (PHMSA OPID 30909) reported 6.263972 active Non-HVL Petroleum Product 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: `8aa7377cebafbb3bc38172737f9ac2febfed2f479fde15ba23996a310ae11810`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-24T03:40:18.707Z
- Document slug: `npms-mileage-01436acc1bda2c8cbc12ce5d`

### 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": "Non-HVL Petroleum Product",
  "mileage": 6.26397159,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 639,
    "rowSha256": "b997e631af8b0294bf3d854863da15af13699aa021f1a7c0525b00c0abbdb7f1"
  },
  "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."
}
```