Sunnyvale Cleanwater Program Digester No. 5 - 833350 - City of Sunnyvale

This project entails constructing a new anaerobic digester, Digester No. 5. Digesters are part of the solids treatment process in the Water Pollution Control Plant (WPCP). The sludge produced by the secondary treatment process in the WPCP is anaerobically treated by digesters to make the sludge safe for disposal in landfills after it is thickened and dewatered. The major project elements include the following: (1) one anaerobic digester equivalent in size to Digester No. 4 (about one mega gallon); (2) approximately 50 linear feet of utilidor to connect the digester to the utilidor system; (3) digester mixing system with a digester mixing pump; (4) digester heating system with a heat exchanger, digester sludge circulating pump, digester hot water circulating pump, and a raw sludge hot water pump; (5) digester sludge pumping system with a digester supernatant pump; and (6) influent sludge grinder. Digester No. 5 is Project 4.4 in the Sunnyvale Cleanwater Program SCWP) Master Plan adopted by City Council in 2016. The Engineering Design phase of the project starts in FY 2024/25 and ends in FY 2025/26, while the Construction phase of the project starts in FY 2025/26 and ends in FY 2027/28. As September 22, 2022, this project is currently in the FY 2022 - 2023 CIP. Funding for this project is allotted in the city's capital improvement plan for construction FY 2024 - 25. A firm timeline has not been established; however, construction is scheduled for Fiscal Year 2024 - 25. *Project information has been obtained through a public capital improvement plan (CIP). A CIP is a financial schedule for short- and long-range projects which is updated regularly. Information listed in the CIP often evolves based on funding availability and the project details, including timeline and value, are subject to change. The content management team will continue to pursue additional details as they become available.

Division 02 -	Existing Conditions, Subsurface Investigation.
Division 03 -	Concrete, Precast Concrete.
Division 04 -	Masonry, Unit Masonry.
Division 05 -	Metals, Structural Metal Framing, Metal Fabrications.
Division 06 -	Wood, Plastics, and Composites, Rough Carpentry.
Division 07 -	Thermal and Moisture Protection, Dampproofing and Waterproofing, Thermal Protection.
Division 08 -	Openings, Doors and Frames, Windows, Hardware.
Division 09 -	Finishes, Painting and Coating.
Division 10 -	Specialties, Signage, Compartments and Cubicles, Emergency Aid Specialties, Fire Protection Specialties, Storage Assemblies.
Division 11 -	Equipment, Laboratory Equipment.
Division 14 -	Conveying Equipment.
Division 21 -	Fire Suppression, Fire-Extinguishing Systems.
Division 22 -	Plumbing, Instrumentation and Control for Plumbing, Plumbing Piping, Plumbing Equipment, Plumbing Fixtures.
Division 23 -	Heating, Ventilating, and Air Conditioning (HVAC), Instrumentation and Control for HVAC, HVAC Air Distribution.
Division 26 -	Electrical, Instrumentation and Control for Electrical Systems, Interior Lighting, Emergency Lighting, Exit Signs, Exterior Lighting.
Division 27 -	Communications, Structured Cabling, Data Communications, Voice Communications, Distributed Audio-Video Communications Systems.
Division 28 -	Electronic Safety and Security, Electronic Access Control and Intrusion Detection, Access Control, Intrusion Detection, Electronic Surveillance, Electronic Detection and Alarm.
Division 31 -	Earthwork, Earthwork Methods.
Division 32 -	Exterior Improvements, Flexible Paving, Rigid Paving, Curbs, Gutters, Sidewalks, and Driveways, Fences and Gates, Turf and Grasses.
Division 33 -	Utilities, Water Utilities, Storm Drainage Utilities, Electrical Utilities, Communications Utilities.
Division 44 -	Pollution and Waste Control Equipment, Common Work Results for Pollution and Waste Control Equipment, Air Pollution Control, Noise Pollution Control, Odor Control, Water Pollution Control Equipment, Solid Waste Control and Reuse, Waste Thermal Processing Equipment, Fluidized Bed Combustion Equipment, Rotary Kiln Incinerators, Pyrolysis Equipment, Hazardous Waste and Medical Waste Incinerators, Heat Recovery Equipment for Waste Thermal Processing, Synthesis Gas Cleanup and Handling Equipment.