Tag: 400

Latest Enbridge Reports Underscore Line 5’s Vulnerability to 400 Michigan Waterways


FOR IMMEDIATE RELEASE                                                                           June 29, 2018
Contact:  Liz Kirkwood                                                                      Email: Liz@FLOWforWater.org
Executive Director                                                                                           Office: (231) 944-1568
FLOW (For Love of Water)                                                                               Cell: (570) 872-4956


Latest Enbridge Reports Underscore Line 5’s Vulnerability to 400 Michigan Waterways and Ongoing Unacceptable Risk to the Straits


TRAVERSE CITY, MI – Enbridge today released three reports required as part of the November 2017 agreement with the Governor concerning Line 5. The reports examine possible methodologies to mitigate potential leaks from Line 5 in the Straits of Mackinac and at nearly 400 water crossings throughout Michigan.

“These reports from Enbridge provide a stack of evidence supporting the public’s call for Gov. Snyder and Attorney General Schuette to shut down Line 5 right now before there is a catastrophic oil spill in the Mackinac Straits,” said For Love of Water (FLOW) Executive Director Liz Kirkwood, an environmental attorney and a co-leader of the Oil & Water Don’t Mix campaign. “Enbridge acknowledges that Line 5 lacks the latest safety technology, remains at risk of more anchor strikes, and threatens not only the Mackinac Straits but also many Great Lakes tributaries, wetlands, and other aquatic resources along its 554-mile-long route in Michigan.

“The governor and attorney general need to stop promoting their long-term dream of a Canadian oil pipeline tunnel under the Straits and across nearly 400 waterbodies in Michigan alone, and finally confront this danger to the Great Lakes, our drinking water, and our jobs tied to the Pure Michigan economy.”

Of particular concern, information in the three reports released Friday by Line 5-owner Enbridge reveals that:

  • Water Crossings Report: This report reveals that Line 5 crosses nearly 400 Michigan waterways, almost double the number of lakes, rivers, streams and wetlands Line 5 was thought to cross. This should shine a light on the fact that not only are the Straits of Mackinac at risk to a potential catastrophic oil spill, but so are 400 waterbodies in our state. According to NWF’s FOIA review, since 1968, Enbridge’s Line 5 has ruptured at least 29 times on land, rupturing over 1.1 million gallons of oil into Michigan’s environment.
  • Technology Reports: (1) Underwater Leak Detection Report: This report examined three external leak detection technologies and concluded that not one of them could provide continuous real-time monitoring that was practical, cost-effective, or operationally proven. With costs ranging between $4 and $40 million, the report used a net present cost assuming a 20-year operating and maintenance period. Both of the optical camera options would require 1,800 cameras on the dual pipelines. (2) Coating Technologies Report: As a part of the leak detection report, the coating technology report ignored the fact that Enbridge’s screw-anchor engineering efforts caused coating pipeline loss in over 80 locations, and does not address how Enbridge will attempt to remedy this major design defect as they work this summer to install another 22 anchors and then possibly 48 more. These anchor permits are currently being challenged at the administrative level by a citizens’ group (Straits of Mackinac Alliance) and the tribes (Grand Traverse Band of Chippewa and Odawa Indians).
  • Anchor Strike Mitigation Report: This report noted that the probability of a failure of an anchor strike to the existing dual pipeline is two to three times higher than the values provided in the November 2017 Dynamic Risk alternative analysis report. Enbridge’s report concludes that the most effective option to mitigate anchor strikes to the dual Line 5 pipelines in the Straits is to cover both lines with a protective barrier consisting of approximately 360,000 cubic yards of gravel and rock. However, this protective barrier would not allow for visual inspection of the pipeline and would impede any external maintenance to Line 5 within the Straits. The protective barrier option also poses environmental risks including disturbance to fish habitat, disturbance to lake vegetation, impacts to water clarity, and potential exposure to toxins during its estimated 2-3 year construction timeline. Notably, this report omitted any mention or analysis of the recent anchor strike that caused an estimated 600 gallons of dielectric fluid to enter the waters of Lake Michigan and dented Line 5 underwater pipelines in three locations.

Fundamentally, the question remains: Why didn’t the State of Michigan require a comprehensive engineering study evaluating the anchor hooking risks as well as the currents, gravitational and thermal stresses of the new elevated pipeline with its 128 screw anchors as compared to the original lakebed support design?

The three reports released today but dated June 30 can be found at: https://mipetroleumpipelines.com/document/enbridge-reports-november-2017-agreement

Public comments will be accepted before July 15 regarding the action the state should take to address the future of Line 5.

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