PRIMARY TREATMENT: floating grease is skimmed off and sinking solids are removed using original sedimentation tank and digester.
SECONDARY TREATMENT: Natural bacteria consume organic solids using new fixed film reactors on top on new secondary tanks.
TERTIARY TREATMENT: Sand filters were built in 1993 to add tertiary treatment to the plants process.
DISINFECTION: Chlorine disinfection and then dichlorination to protect Bay life using new chloring contact tanks.
SOLIDS HANDLING: using improved facilities and new thickener tank and digester.
CONTROL AND STORAGE: New chemical storage and computer control facilities.