Are there other restrictions on public access to sites with biosolids?
In general, Class A, or Exceptional Quality (EQ), biosolids used in small quantities by the general public have no requirements regarding buffer zones, crop type, crop harvesting or site access. EQ biosolids is the designation given to treated residuals that contain low levels of metals and do not attract vectors (disease-carrying animals and insects). When used in bulk, Class A biosolids are subject to buffer requirements but not to crop harvesting restrictions. In general, Class B biosolids are subject to buffer requirements, public access and crop harvesting restrictions.
