I just read the blog post at Edmonds Undressed about the Unocal pier being torn down.  This was news to me, and after reading the Enterprise article about it, I understand why.

The $2 million project is necessary, said Joy Goldenburg, with Washington State Ferries. The agency is paying for the work as part of early environmental mitigation for future improvements to Edmonds' ferry terminal.
The pier's creosote-treated timber pilings are rotting, and the pier is starting to fall apart.
That poses both environmental and safety hazards.
As work progresses, the pilings are broken down and transported to a landfill in Oregon, said Shawn Devine, a spokesman with WSF.  Full Article

Sort of a bummer to be losing a good dive site, and it won't look the same down there, but it makes sense that they need to pull it down.  As I commented over on the Edmonds Undressed blog, I hope someone takes up the cause of adding in a replacement reef or other underwater structure out there. 

If you know of anyone that is going to do something like that or have a comment on the removal of the Unocal Oil dock in Edmonds, post it and let the world know what you think and please, if you think other people should know about this post, share it on Digg, Stumble and so on!