Michigan's Governor Snyder entered into agreements with Enbridge and passed a law allowing the construction of a utility tunnel through the Straits of Mackinac.
The law and agreements are included here.
Act No. 359 (HTML version) - 12/12/2018
Law Authorizing Creation of Mackinac Straits Corridor Authority and Tunnel Oversight
The Tunnel Agreement- 12/19/2018
Third Agreement - 12/19/2018
Agreement to fulfill the parties' obligations under the Second Agreement
- Continued Operation of Dual Pipelines Pending Completion of Tunnel and Activation of Line 5 Replacement Segment
- Compliance with 1953 Easement
- Financial Assurance
- Pipeline Coatings
- Maximum Span of Unsupported Pipe
- Construction and Operation of Straits Line 5 Replacement Segment
- Permanent Deactivation of Dual Pipelines
- Delay Events
- Dispute Resolution
- Termination
Second Agreement - 10/3/2018
Agreement to pursue a further agreement to address Line 5’s crossing of the Straits of Mackinac
- Continued Coordination Between the State and Enbridge
- Replacement of Line 5 St. Clair River Crossing
- Discontinuation of Line 5 Operations in the Straits During Sustained Adverse Weather Conditions
- Underwater Technologies to Enhance Leak Detection and Technologies to Assess Coating Condition of the Dual Pipelines
- Implementation of Measures to Mitigate Potential Vessel Anchor Strike
- Replacement of Dual Pipelines in a Straits Tunnel
- Further Agreements for a Straits Tunnel
- Permanent Deactivation of the Dual Pipelines
- Line 5 Water Crossings Other Than the Straits
- Financial Assurance
- Continuation of Additional Measures to Enhance the Safety of Line 5 in Michigan
First Agreement - 11/27/2017
Agreement to improve coordination between Enbridge and the State of Michigan for operation and maintenance of Line 5 pipeline
- Increases coordination between Enbridge and the State of Michigan
- Replacement of Line 5 St. Clair River Crossing
- Discontinuation of Line 5 Operations in the Straits during sustained adverse weather conditions
- Evaluation of underwater technologies to enhance leak detection
- Evaluation and implementation of measures to mitigate potential vessel anchor strike
- Evaluation of alternatives to replace dual pipelines
- Evaluation of Line 5 water crossings other than the Straits
- Potential further agreement concerning pipelines across the Straits
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