The Sunnyvale Cleanwater Program is underway and moving forward with several critical projects to upgrade the Sunnyvale Water Pollution Control Plant (Plant). This page is a resource for learning more information about the projects and accessing related documents.
Status: In DesignTop
Through this project, access to the San Francisco Bay Trail will be relocated in order to accommodate the proposed improvements to the Plant, maintain public safety and ensure site security. As part of this process, Carl Road will be closed to public access west of Borregas Avenue and recreationists would instead access the Bay Trail and other neighboring trails using an enhanced access point along Caribbean Drive at the West Channel.
For more information on this project, please click here.
Status: Conducting Condition AssessmentTop
The City recently completed the Master Plan for the Plant, which encompasses more than 30 capital improvement projects, including the Existing Plant Rehabilitation Project. Before this rehabilitation project is advertised for design, the City wants to further assess the existing condition of the facilities at the Plant.
Due to the age of overall facilities at the Plant, the project will further assess key elements of the existing treatment processes that need to be rehabilitated or replaced to maintain permit compliance, including the following:
- Pond effluent piping
- Secondary treatment process
- Tertiary treatment process
- Oxidation pond area
This project is anticipated to last approximately six months and will include onsite assessment of the facility’s conditions, repair recommendations, and a condition assessment report to guide future facilities rehabilitation projects at the Plant.
Status: Complete (Substantial Completion Achieved 10/25/17)Top
Construction work has been completed on Package 1 – Site Preparation for the Primary Treatment Facility, the first major project to upgrade the Plant. This project prepared the site location for a new primary treatment facility, which is the first treatment step for the wastewater entering the Plant. The buildings and equipment that replace existing, aging primary treatment facilities will be constructed under Package 2.
Crews have demolished the existing sludge dewatering tile beds and several small structures at the Plant. Concrete and asphalt from demolition was hauled offsite for reuse or disposal. The contractor has placed approximately 100,000 cubic yards of soil across the site to compact the existing ground and enable it to support the buildings that will be constructed during Package 2. The contractor is currently working on removing excess soil from the site in order to clean up the site for Package 2 construction activities. This excess soil can be reused at the Plant and on other construction projects in the Bay Area. and on other construction projects in the Bay Area.
Work for Package 1 reached substantial completion in October 2017 and construction for Package 2 began in December 2017.
Status: Under ConstructionTop
The Headworks and Primary Treatment Facility–Package 2 includes the construction of the new headworks and the primary treatment facilities including a new switchgear building and standby generator, ancillary facilities and Lighting at the Sunnyvale Water Pollution Control Plant (Plant). Package 2 construction will also include the construction of the first phase of a flood wall that will ultimately surround and protect the Plant from future flood events along with Habitat Mitigation to the north of the Plant.
Primary treatment facilities will be constructed as part of this project to replace existing and aging facilities. The Invitation to Bid for Package 2 for the Headworks and Primary Treatment Facility was released in December 2016. The bidding period closed on March 1, 2017.
The Package 2 contractor recently completed planting approved plants in the Habitat Mitigation area to the north of the Plant as part of the Project. Next steps include installing a new portion of the existing primary effluent pipeline along the northern edge of the Project site.
As of December 2017, the Package 2 contractor has received a notice to proceed with construction on the main Project site and will commence with site work.
Status: In DesignTop
The purpose of the Secondary Treatment and Dewatering Project is to improve various components of this treatment process to meet future requirements. The current secondary treatment process at the Plant cannot meet expected future, stringent nitrogen limits. This project will build conventional activated sludge facilities, which will be the main method to provide secondary treatment. The existing ponds, air flotation tanks, and fixed growth reactors will remain in service to augment the new facilities during periods of high flow.
Once new secondary treatment facilities are constructed, a thickening and dewatering facility will be needed to handle the additional biosolids generated. Solids-handling equipment will be housed in a new building and the ventilated air will be treated by an odor control system prior to discharge to the atmosphere.
This project will also involve new support facilities, including demolishing the existing Administration Building, constructing a new Maintenance Building with shops and storage on the same site and then demolishing the old Maintenance Building.
An RFP was released by the City of Sunnyvale for the design of these facilities in February 2017. The bidding period closed on April 12, 2017 and design of the Project began in September 2017. . Please see below for links to additional reference documents about the project.
Secondary Treatment and Dewatering documents
City standard specifications and details
Program design standards and master planning documents
- Basis of Design Report
- Strategic Infrastructure Plan
- ACS Plan TM
- Geotechnical Study for the Master Plan
- Existing Utilities TM
- Land Survey and Monumentation Documents
- Site Investigation Analysis (Hazardous Materials Analysis) TM
- Building Programming TM
- ECHP Plan TM
- Site Layout Considerations TM
- Flows and Loads TM
- Architectural Design Standards
- Civil Design Standards
- Corrosion Design Standards
- Electrical Design Standards
- Instrumentation and Control Design Standards
- Landscape Design Standards
- Mechanical Design Standards
- Odor Control Design Standards
- Structural and Seismic Design Standards
RFPs for concurrent professional services
- RFP F16-098: Provide and Install an Enterprise Asset Management System
- RFP F17-048: Professional Design Services Associated with the Sunnyvale Clean Water Program Facility Condition Assessment Project, Published November 2016
- New administration building
Plans, specifications, and reports for current construction projects
- Headworks and Primary Treatment Design Information Memoranda
- DIM 1-Site Layout.pdf
- DIM 2-Hydraulic Profile.pdf
- DIM 3-Influent Monitoring and Sampling.pdf
- DIM 4-Screenings and Screenings Handling.pdf
- DIM 5-Influent Pumping.pdf
- DIM 6-Grit Removal and Grit Handling.pdf
- DIM 7-Primary Sedimentation Tanks .pdf
- DIM 8-CEPT.pdf
- DIM 9-Odor Control and HVAC.pdf
- DIM 10-Power Supply and Standby Power.pdf
- DIM 11-HMI and Facility Automation.pdf
- DIM 12-Construction Cost Estimate.pdf
- DIM 13-Westerly Stormwater Channel.pdf
- DIM 14-Floodwall Basis of Design.pdf
- Headworks and Primary Treatment Package 1 plans, specifications, and addenda
- Headworks and Primary Treatment Package 2 plans and specifications
- City of Sunnyvale Water Pollution Control Plant Air Flotation Tank Improvements, Dated 2010, Construction Drawings, Prepared by RMC Water & Environment
- City of Sunnyvale Water Pollution Control Plant Rehabilitation of Anaerobic Digesters No. 1 and No. 2 and Improvements to No.
3 Dated 2013, Construction Drawings, Prepared by Kennedy/Jenks Consultants
- Rehabilitation of Anaerobic Digesters No. 1 and No. 2 and Improvements to No. 3 Drawings
- PW13-22-Addendum 1 Rehabilitation of Anaerobic Digesters 1,2, & Improvements to No. 3.pdf
- PW13-22 Addendum 2 Rehab of Anaerobic Digesters No. 1,2 & Improvements to No. 3.pdf
- PW13-22 Addendum 3 Rehabiliation of Anaerobic Digesters 1,2 & Improvements to No 3.pdf
- City of Sunnyvale Water Pollution Control Plant Emergency Flow Management Improvements, Dated 2015, Construction Drawings,
Prepared by CDM Smith
- City of Sunnyvale Water Pollution Control Plant Hypochlorite Conversion and Continuous Recycled Water Production Facilities,
Dated 2015, Construction Drawings, Prepared by HDR Engineering
- Bid Set Plans - Hypochlorite Conversion and Continuous Recycled Water Production Facilities.pdf
- Addendum #1 - Hypochlorite Conversion and Continuous Recycled Water Production Facilities.pdf
- Addendum #2 - Hypochlorite Conversion and Continuous Recycled Water Production Facilities.pdf
- Specifications Vol 1 of 2 - Hypochlorite Conversion and Continuous Recycled Water Production Facilities.pdf
- Specifications Vol 2 of 2 - Hypochlorite Conversion and Continuous Recycled Water Production Facilities.pdf
- PR-62-14: Sludge Circulating Piping Changes, October 1962
- PR-65-1: Sewage Treatment Works Oxidation Pond, August 1965
- PR-66-5: 1967 STP Modifications, February 1967
- PR-69-5: Sewage Treatment Works 1969 Enlargements and Modifications, June 1969
- PR-73-2: Water Pollution Control Plant Drawings for Tertiary Facilities, July 1975
- PR-79-3: Primary Effluent Pipeline, June 1979
- PR-80-16: Addition of Dual Media Filter No. 4, December 1980
- PR-82-4: Tertiary Facilities, April 1982
- PR-82-6: Primary Facilities, June 1982
- PR-82-8: Administration Building, April 1982
- PR-84-5: Sunnyvale WPCP Contract C-5 Landscaping Improvements, August 1984
- PR-84-6: Sunnyvale WPCP Lab Building Addition, June 1985
- PR-85-8: HVAC Modifications, February 1985
- PR-89-10: Lab/Tertiary Control Building Modifications and Administration Building Expansion, Phase 1, Locker Room Addition, April 1989
- PR-90-7: Process Gas Piping System, June 1990
- PR-90-9: Barscreen Replacement Project, August 1990
- PR-91-12: Office Modular Unit, December 1991
- PR-92-1: Renovation Plan Lakewood Park, January 1991
- PR-93-10: Sludge Dewatering Improvements, July 1993
- PR-93-11: Surface Aerator Installation, September 1993
- PR-94-15: Toxic Gas Storage and Handling Facilities, November 1994
- PR-95-2: Power Generation Facility, January 1996
- PR-95-2(G): Power Generation Facility Improvements Digester Gas Flare, January 2001
- PR-95-2(1): Power Generation Facility Waste Heat Exchanger No. 1 & 2 3” Drain Reroute, January 2002
- PR-95-7: Sunnyvale Landfill Monofill Area, June 1996
- PR-95-12: Landfill Erosion Repair, March 1996.
- PR-98/10-99: Upgrade of Electrical System, May 1999
- PR-98/16-99: Administration Building Improvements, 1999
- PR-98/17-00: City of Sunnyvale Pollution Control Plant Re-Roofing, 2000
- SS-17: Temporary Sewer Bypass for Disposal Plant, July 1955
- STP-1955: City of Sunnyvale Sewage Treatment Works, March 1953
- STP-1961: City of Sunnyvale Sewage Treatment Plant Enlargement, July 1961
- PR-65: Oxidation Pond Additions, August 1965
- UW-93-01: Water Recycling Program Interim Pump Station, April 1993
- UW-95-02: Polymer Feed System Improvements, June 1996
- UW-96-01: Tertiary Plant Improvements, July 1997
- UW-98-02: Recycled Water Pump Station Capacity Expansion, March 2000
- UY-88-02: Fire Line, Project 79646, October 1988
- UY-95-01: Guadalupe Slough Levee Repair, September 1995
- UY-96-01: Oxidation Pond Levee Improvements, September 1996
- UY-00-05-01: Energy Recovery Facilities, January 2007
- UY-00-06-01: Air Flotation Tank Gate Actuators, October 2002
- UY-00-02-01 and UY-02-02-03: Chemical System Improvements, April 2004
- UY-02-07-03: Oxidation Pond Levee Improvements Phase 4, April 2006
- UY-03-01-05: Digester Lid and Drain Line Rehabilitation Digester No. 3, November 2005
- UY-04-01-05: Laboratory Building, August 2005
- UY-05-04-06: Tertiary Plant Tank Drainage System Modifications, April 2010
- UY-08-01-09: Rehabilitation of WPCP Digester No. 4: March 2009
- UY-08-02-09: Air Flotation Tank Improvements, November 2010.
- UY-09/01-10: Sodium Bisulfite System, November 2009
- UY-11-03-11: DSMBI – Sunnyvale, June 2011
- Primary Control Building Remodeling, February 1993
WPCP manuals and data
Other plans, studies, and reports
- Digester Rehab TM
- Asset Condition Assessment
- Strategic Infrastructure Plan and Peer Review
- 1 Final TM Business Case Evaluation of Alternatives.pdf
- 1 Final TM Nitrification Improvements.pdf
- 2 Final TM Business Case Evaluation Based Decision Making Methodology.pdf
- 2 Final TM Evaluation of Dewatering Alternatives .pdf
- 3 Final TM Flotation Upgrade Alternatives.pdf
- 3 Final TM LOS Measures.pdf
- 4 Final TM Anaerobic Digestion of Algae.pdf
- 5 Final TM Recycled Water Treatment Alternatives.pdf
- 12-14-11 SIP Meeting Notes Final.pdf
- CH2M Hill NLH4494_FullDocument.pdf
- Final TM Condition Assessment and Unit Process Performance Review.pdf
- Final TM EarlyExecutionProjects.pdf
- Final TM Electrical Power Level of Service.pdf
- Final TM Headworks and Primaries Upgrade Alternatives.pdf
- Final TM Influent Flows and Loads.pdf
- Final TM Plant Replacement Goals and Technology Screening Review.pdf
- Final TM PlantRehabAlternativesSummary.pdf
- Final TM PlantReplacementAlternativesSummary.pdf
- Final TM Regulatory Framework.pdf
- Final TM Seismic Performance Goals.pdf
- Final TM Solids Loads.pdf
- FinalTM ConsultantsCommentsOnPeerReview.pdf
- SIP TMs Guide_Rev1.pdf
- Collection System Master Plan
Project 8.3 – Administration and Laboratory Building
Status: In DesignTop
The new Administration and Laboratory Building, to be located at the southwestern edge of the WPCP between Carl Road and Recycle Hill, will replace the functionality of the existing Administration Building, Laboratory/Control Building, and Compliance Inspection Building. It will house administration, outreach, operations, and laboratory and compliance inspection functions.
The major project elements include site preparation (including the removal of landfill material at the building site along with design of the subsurface gas barrier, collection and venting system), an approximately 22,000 square foot, two-story building, permanent and temporary utility relocations, landscaping, vehicle access, and parking stalls. The Administration building will be designed to meet U.S. Green Building Council LEED Gold rating requirements.