# GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP — Macomb County, MI

**Citation:** NPMS FIPS 26099 / OPID 6660  
**Type / status:** inspection / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** Not stated  
**Published:** 2026-07-16

8.787163 active Natural Gas pipeline miles in Macomb County, MI; public NPMS snapshot 2026-07-16.

## Document text

GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP (PHMSA OPID 6660) reported 8.787163 active Natural Gas pipeline miles in Macomb County, MI (county FIPS 26099) 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: `3c841b6910bb8009e27ab3d786f16d637c732c0793a226d708a98d2857966106`
- Retrieved: 2026-08-20T04:38:11.081Z
- Exported: 2026-08-26T01:39:34.088Z
- Document slug: `npms-mileage-1976af06e89d9e8d0b645105`

### Source metadata

```json
{
  "materialSubtype": "pipeline_mileage",
  "dataAsOf": "2026-07-16",
  "dateBasis": "data_as_of_not_publication_date",
  "fips": "26099",
  "stateFips": "26",
  "state": "MI",
  "county": "Macomb County",
  "region": "Macomb County, MI",
  "operator": {
    "id": "6660",
    "name": "GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP"
  },
  "commodity": "Natural Gas",
  "mileage": 8.78716288,
  "plantCount": null,
  "snapshotScope": "active_assets_only",
  "personalContactDataExcluded": true,
  "restrictedGisExcluded": true,
  "provenance": {
    "workbook": "pipeline_mileage",
    "sheet": "Summary - Cnty, Oper, Commodity",
    "rowNumber": 5773,
    "rowSha256": "c551b6b73f858cc9c9386788d177d7c8c4338155932871a2ccfcc5f287643338"
  },
  "citedSections": [
    "191.29"
  ],
  "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": "GREAT LAKES GAS TRANSMISSION LIMITED PARTNERSHIP"
}
```