here is a take for ya..

I managed a contract where I was on-site at a local "new" navy base. We managed all Haz/Waste generated at this base.
I tell ya they were very anal on ensuring that all (ALL) aplicable local, state and federal mandates were followed. I would even sample sludge at all of the outfalls going into the bay. If there was any detect of contamination. We had the entire sump pumped and shipped out.

I could go on and on about over kill we would do in managaing envirionmental wastes they produced..
On the other hand I do not know what took place out on the high seas, but I always know when the ships returned they always had waste to off-load to us. So they were not dumping it all over board..

That same anti-fowling paint is on every other freighter, tug, barge etc. out there..

I say bring the dome! it wont ruin any views of the folks up on the bluff. If they didnt want a industrial harbor view they shouldnt have moved there, thats the way that place has always been, an active industrial harbor. They didnt snibble and moan when that Russian (ugly) freighter was stuck in the harbor out there for months.. That thing was probally dumping all sorts of crap in the bay and all these folks were delivering their warm and fuzzies because they felt sorry for them..