# GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP — St. Clair County, MI

- **operation:** document
- **citation:** NPMS FIPS 26147 / OPID 6660
- **title:** GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP — St. Clair County, MI
- **source type:** inspection
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** 2026-07-16
- **effective on:** Not available
- **summary:** 48.03446 active Natural Gas pipeline miles in St. Clair County, MI; public NPMS snapshot 2026-07-16.
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/npms-mileage-62bda23059b6192273ebb770.json
- **markdown:** https://regulus.evalyn.ai/document/npms-mileage-62bda23059b6192273ebb770.md
- **app url:** https://regulus.evalyn.ai/document/npms-mileage-62bda23059b6192273ebb770
- **source url:** https://www.npms.phmsa.dot.gov/Documents/NPMS_Active_Pipe_County_Mileage.xlsx
**body:**

GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP (PHMSA OPID 6660) reported 48.03446 active Natural Gas pipeline miles in St. Clair County, MI (county FIPS 26147) 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.
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- **body characters:** 372