# SENTINEL MIDSTREAM OPERATING LLC — Harris County, TX

- **operation:** document
- **citation:** NPMS FIPS 48201 / OPID 40275
- **title:** SENTINEL MIDSTREAM OPERATING LLC — Harris County, TX
- **source type:** inspection
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** 2026-07-16
- **effective on:** Not available
- **summary:** 29.89504 active Crude Oil pipeline miles in Harris County, TX; public NPMS snapshot 2026-07-16.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/npms-mileage-269ac43295e109b673a0a924.json
- **markdown:** https://regulus.evalyn.ai/document/npms-mileage-269ac43295e109b673a0a924.md
- **app url:** https://regulus.evalyn.ai/document/npms-mileage-269ac43295e109b673a0a924
- **source url:** https://www.npms.phmsa.dot.gov/Documents/NPMS_Active_Pipe_County_Mileage.xlsx
**body:**

SENTINEL MIDSTREAM OPERATING LLC (PHMSA OPID 40275) reported 29.89504 active Crude Oil pipeline miles in Harris County, TX (county FIPS 48201) 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.
- **truncated:** false
- **body characters:** 352