I have zero complaints.
Thank you kindly.
Thank you
Tunnel Engineer Brian O’Mara points out that the conditions under the Straits of Mackinac are not fit for a tunnel.
In regard to Enbridge’s initial engineering report that supported the oil tunnel, O’Mara called out the following, “They (Enbridge) assumed very good rock conditions, they assumed minimal groundwater inflow, they assumed no toxic gases or methane. Most importantly they assumed that the tunnel annulus, which is the space between the pipeline and tunnel wall, be completely filled or backfilled with concrete … none of those conditions came true.”
In regard to Enbridge’s lack of adequate sampling of the bedrock, O’Mara remarked, “They didn’t do nearly enough borings, they didn’t go nearly deep enough, and they didn’t take the samples where they should have. And despite all of those deficiencies in their study they came back—and the report is open to the public—the rock quality is extremely poor to very poor quality. They grade rocks from 0-100%. 25% of the rock was a zero …This is the worst rock I’ve ever seen anyone think about putting a tunnel in… because the rock is so bad it doesn’t behave like rock, it behaves more like gravel.”
The Army Corps of Engineers is responsible to the public and to clean, safe waterways, not to the Trump administration and corporate interests. Please do the right thing and vote your conscience. An oil spill, if this goes through, will weigh on your conscience.
