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Sewage plant failure: design error coupled with electrical configuration problems

Degremont's computer system did not respond as it should have.

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Friday, at 4:30pm, Halifax Water finally released the forensic audit of the January 14, 2009 failure of the Halifax sewage plant.

The forensic audit confirms almost everything I wrote in my August, 2009 investigation of the plant failure, “How the sewage plant broke.”

Here’s what I wrote two years ago, with minor adjustments, corrections and new information learned from the forensic audit added in italics where necessary:

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