BEI is responsible for the contract operation and maintenance of the Prunetree Shopping Center wastewater treatment system and collection system including one lift station. This shopping center in Prunedale, CA has a single basin SBR (Sequencing Batch Reactor), no septic tanks are needed. Wastewater is pumped from the shopping center to the SBR and the treated effluent is then pumped to one of the two leachfields. The solid sludge byproduct from the SBR treatment process is bagged onsite and transported to a landfill as needed. The treatment plant also has to be operated for nitrogen removal. The effluent quality from the sequencing batch reactor is critical to continued performance of the leachfield disposal system. BEI operates this 20,000 gpd system under contract to the shopping center ownership and is responsible for all monitoring reports to the Regional Water Quality Control Board and preparation and updating of O&M manuals and ESRP. The plant has met all discharge requirements on a consistent basis.