The Photographic Processing Facility Sector Control Policy (PDF) establishes City requirements for any Photographic Processing Facility (PPF or facility) that has the potential to discharge silver and associated pollutants related to the photographic processing sector into the sanitary sewer system. Such wastes can contribute to wastewater treatment plant process interference, pass-through of pollutants into the environment, contaminate biosolids, and impact sewer worker health and safety.
Silver Recovery System
Any facility that has the potential to discharge silver and associated pollutants related to the photographic processing sector into the wastewater system is required to install a City-approved silver recovery system to remove silver from process wastewaters and to use the BMPs described in the Photographic Processing Sector Control Policy. Silver recovery units must be approved by the City prior to installation.