I have never seen a specification for this purpose. Are you thinking of a short term or long term type of specification. On thing that we have had to do in Florida is wrap the piles in plastic to avoid leakage of the CCA treatment into the surrounding waters. This appears to have been a fairly...
I design these for a living down in Florida and there are several US technical standards such as:
Marinas and Small Craft Harbors
http://www.amazon.com/Marinas-Small-Craft-Harbors-Tobiasson/dp/0442002335
Another decent standard is the California Berthing Guidlines standards...