In some cases they are based on a failed EA. In that particular case--a failed EA--by law we cannot issue an approval, even though our navigational assessment might be positive. In other situations it could be because of a failure to find a way to accommodate the work in a safe manner, even with modification. This particular number also shows in the denials shown as “closed without approval”. These files are closed because we've asked for the applicant to provide us with more information, and they've never come back.
As you can see, there's very little we deny or refuse. I think that's the main thing: if somebody has a need to put something in the water, over the water, under the water, or through the water, and has a valid need to do it, we'll try our utmost to get it done in a safe manner.