Canepole and Burger, CCA lumber is a thing of the past. I'm pretty sure this has been brought up before. See
New Rules for Pressure Treated Wood . The CCA treated lumber Burger is describing is hardly available at your local lumber yards. It may be of more concern to make sure proper fastener materials are utilized so that people don't fall through the pier 3 years after it is built due to corrosion failure of the fasteners. I'd be more interested in tests showing the hazards of lumber that is actually being sold to the public. You should be able to pick up the MSDS sheets at you local yard. By law these are to be readily available/posted.
