The disposal strategies and regulatory issues related to chromated copper arsenate (CCA) treated wood, are discussed. The presence of CCA-treated wood as 5% of the wood mix causes the ash to be characterized as hazardous. It is observed that Mulch must contain <0.2% CCA-treated wood in order to pass GWCTL standards. The short-term solution is to develop strategies by which to better manage CCA-treated wood, and the long-term solution is to use wood treated with non-arsenical preservatives.
