Guardian 3 Expansion Project
From the ProvenHand pipeline wiki
Sources disagree on some of this page's facts. Each value is shown with its sources; see Sources disagree.
Guardian 3 Expansion Project is a natural gas pipeline expansion in Illinois and Wisconsin, operated by Guardian Pipeline, L.L.C..
| Guardian 3 Expansion Project | |
|---|---|
| Also called | Guardian Pipeline Project[1] |
| General information | |
| Kind | Pipeline project[1] |
| Project type | Expansion[1][2] |
| Status | Proposed[2][3] |
| Commodity | Natural gas[2][3] |
| Owner and operator | |
| Operator | |
| Facility projects | |
| States | Illinois, Wisconsin[2][3] |
| Counties | Illinois: DeKalb, Kendall, McHenry, Will Wisconsin: Dodge, Fond du Lac[3] |
| FERC docket | CP26-548[1] |
| Contractors | |
| Technical information | |
| Length | 68 mi[2] or 68.3 mi[3][sources disagree] |
| Pipe size | 36"[2][3] |
| Capacity | 537 MMcf/d additional capacity (EIA)[2] |
| Capacity added | about 536,903 Dth/day of long-term firm transportation capacity[3][5] |
| Cost | $897,347,093 total estimated project costs (Exhibit K); application text says approximately $890,000,000[4] |
| On ProvenHand | |
| Hands listed | 0 |
Guardian 3 Expansion Project is a natural gas pipeline expansion in Illinois and Wisconsin, operated by Guardian Pipeline, L.L.C..
Contractorsedit
| Contractor | Work | Hired by | Scope |
|---|---|---|---|
| MI Tech Services, Inc.[4] | HDD design engineer | DT Midstream | HDD design report (June 2026) for the 36-inch Highway 34 and railroad crossing near Sandwich, IL, prepared for DT Midstream; Highway 34 and railroad near Sandwich, IL (Joliet Loop Segment J2) |
| Civil & Environmental Consultants, Inc.[4] | Geotechnical investigation for HDD design | Geotechnical borings (March and May 2026) at the Highway 34 and railroad HDD crossing; Highway 34 and railroad near Sandwich, IL (Joliet Loop Segment J2) | |
| Merjent, Inc.[4] | Environmental consultant (wetland and waterbody surveys) | Desktop and field wetland and waterbody delineation surveys for Guardian (Oct-Nov 2025, Apr-May 2026) |
Crossings
| Feature | Method |
|---|---|
| Highway 34 and railroad near Sandwich, IL (Joliet Loop Segment J2)[4] | HDD |
| Little Rock Creek (Joliet Loop Segment J2)[4] | HDD |
| West Aux Sable Creek (Joliet Loop Segment J1)[4] | HDD |
Sources disagree
These sources give different values for the same fact. Each value is listed with the sources that give it.
Crew on ProvenHand
No one on ProvenHand has listed this job yet.
Did you work on Guardian 3 Expansion Project? Add it to your work history on ProvenHand and get it confirmed by someone who was there. Sign in or join.
Referencesedit
- “FERC eLibrary docket CP26-548”. Federal Energy Regulatory Commission. 1 July 2026. Retrieved 3 October 2026.
- “U.S. natural gas pipeline projects (Natural Gas Pipeline Projects)”. U.S. Energy Information Administration. Retrieved 3 October 2026.
- “Notice of Scoping Period Requesting Comments on Environmental Issues for the Proposed Guardian 3 Expansion Project (CP26-548)”. Federal Energy Regulatory Commission. 29 July 2026. Retrieved 3 October 2026.
- “Abbreviated Application for a Certificate of Public Convenience and Necessity, Guardian 3 Expansion Project (CP26-548): Volume I, Resource Report 2 with Appendix 2D HDD design report, and Resource Report 9”. Guardian Pipeline, L.L.C. (filed with FERC). 1 July 2026. Retrieved 3 October 2026.
- “DT Midstream awards capacity on Guardian Pipeline expansion”. Oil & Gas Journal. 3 October 2025. Retrieved 3 October 2026.
This pipeline article is a stub. You can help ProvenHand by expanding it.