# WESTLAKE PETROCHEMICALS LLC — Calcasieu Parish, LA

**Citation:** NPMS FIPS 22019 / OPID 30683  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

16.42061 active Other HVLs pipeline miles in Calcasieu Parish, LA; public NPMS snapshot 2026-07-16.

## Document text

WESTLAKE PETROCHEMICALS LLC (PHMSA OPID 30683) reported 16.42061 active Other HVLs pipeline miles in Calcasieu Parish, LA (county FIPS 22019) 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: `0fcc3ac8f7742f23550d1ebd5882ab9a1b475cf9a7d98639b1c2573c517953e5`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-25T20:53:12.337Z
- Document slug: `npms-mileage-9e4d041d809754ad2ae8c381`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "22019",
  "stateFips": "22",
  "state": "LA",
  "county": "Calcasieu Parish",
  "region": "Calcasieu Parish, LA",
  "operator": {
    "id": "30683",
    "name": "WESTLAKE PETROCHEMICALS LLC"
  },
  "commodity": "Other HVLs",
  "mileage": 16.42060985,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 4458,
    "rowSha256": "052a2a14c61344a1c28a879a277a36542d1e8d5aa2a0c2a30b432fc3678aad3f"
  },
  "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": "WESTLAKE PETROCHEMICALS LLC"
}
```