I mentioned earlier in answer to a previous question that prior to the National Energy Board taking over the Canada Oil and Gas Operations Act responsibilities, there was a review done by the Environmental Impact Review Board pursuant to the Inuvialuit Final Agreement, whereby they found that the drilling program was insufficient. There were still concerns. That advice was turned over to the regulator, and the drilling program was not approved.
On June 15th, 2010. See this statement in context.