On August 1, 2011 the EPA Science Advisory Board (SAB) posted a notice on its website soliciting comment on a list of candidates for the SAB panel that will review the draft noncancer assessment for PCBs, with a deadline for comments on August 22, 2011. As there are 55 candidates, the associations listed in the attached letter request a 21-day extension of the public comment period to September 12, 2011 to ensure sufficient time to adequately review the list of candidates.