I'm also going to let Keith answer this.
If the environmental impacts when it originally had been assessed haven't changed, if spawning habits or whatever haven't changed, if the repairs are sort of exactly in the same areas--it's still in kind of serviceable areas--it probably would not require a major difference. But if any of those factors have changed, yes, we'd be thrown into a lot of detail, and we're still obligated under the law to do the full environmental assessment.
Keith is more knowledgeable about doing the screenings.