I think that is the nature of the exemption I was referring to. I can look it up if needed. I don't think it is pruning-specific - more global than that...Also, remember, ANSI standards are just that...standards, not regulations. So unless a municipality adopts specific legislation making the standard a regulation, there isn't much they can do. There is nothing in ANSI A300 that makes organizations/municipalities/big companies/50-year old companies with a one-man show, etc... exempt from any "SHALL" statement.