Overall, the extent and severity of effects of pressure-treated wood in an estuary depends on the amount and age of the wood and the degree of dilution by water movements.
Canepole, I can appreciate your caution, and I think the last sentence says it all. Amount, age, and dilution.(400,000gal., 1 million gal.) People use this wood to border their gardens, it is handled every day by people; if it is that dangerous, I wonder why it is not banned. The fact that barnacles dont grow as rapidly while attached to it as to non treated wood, is haardly enough to scare most people. If the same tests were run on the various metals, plastics,concrete mentioned; could not the same conclusions possibly be drawn? Just a thought. I think I will still put in 2 4x6 posts for a pier and not be concerned. But,again, I see your concern.
