Technical Documents

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Existing Plant Rehabilitation

Status: Requesting Proposals

The City of Sunnyvale has made several assessments of the Plant and has determined that due to the age of the facilities many of them need to be rehabilitated or replaced to maintain permit compliance and Plant reliability. Rehabilitation of the Plant facilities is needed now so that they remain functional until Stage 2 of the secondary treatment facilities are complete or through 2035. Improvements are recommended for the following key Plant facilities:

• Oxidation Pond System

• Chlorination System

• Fixed Growth Reactor – Air Flotation Tank Systems

• Tertiary Dual Media Filters

• Chlorine Contact Area

This project will also involve optimization of the pond system and the construction of the new western portion of the perimeter Plant wall.

Now that the assessments are complete, in early 2019 the City will be requesting proposals from design consultants for the rehabilitation or replacement of the facilities identified in the Facility Condition Assessment Report.

Technical Information and Key Reference Documents

• Standard Details for Public Works Construction (sunnyvale.ca.gov)

• LVL2-1 Program Schedule

• Program Design Standards and Master Planning Documents

  • Basis of Design Report

  • Strategic Infrastructure Plan

  • ACS Plan TM (94.1 MB)

  • Geotechnical Study for the Master Plan (31.8 MB)

  • Existing Utilities TM

  • Land Survey and Monumentation Documents

  • Flows and Loads TM

  • Civil Design Standards

  • Corrosion Design Standards

  • Electrical Design Standards

  • Instrumentation and Control Design Standards

  • Mechanical Design Standards

  • Structural and Seismic Design Standards

  • Primary Treatment Design – Design Information Memorandum No. 14 – Basis of Design – Flood/Retaining Wall and Flood Gate

• Project Environmental Impact Report (PEIR)

• Plant Schematics

  • Electrical Schematic

  • Liquids Process Schematic

  • Solids Process Schematic

  • Sunnyvale WPCP – Basemap (Addendum No. 3)

    • Basemap CAD Drawings (zip, 147 MB)

    • Basemap Aerial - Part 1 (tif, 188 MB)

    • Basemap Aerial - Part 2 (tif, 200 MB)

    • Basemap Aerial - Part 3 (tif, 168 MB)

• Plans, Specifications, and Reports for Current Construction Projects

  • Headworks and Primary Treatment Design Information Memoranda

  • Headworks and Primary Treatment Package 2 plans and specifications - Vols 1-3 (zip, 22 MB)

  • Headworks and Primary Treatment Package 2 plans and specifications - Vols 4-5 (zip, 233 MB)

  • Headworks and Primary Treatment Package 2 plans and specifications - Vols 6-7 (zip, 156 MB)

  • City of Sunnyvale Secondary Treatment and Dewatering Technical Memorandum D1 (zip, 10 MB)

  • Appendix to Technical Memorandum D1 - PMC Recommendations Regarding Rehabilitation of Pond System Treatment Components

• Record Drawings. The City does not guarantee the accuracy or completeness of record drawings. Consultant shall verify all information to their professional satisfaction.

  • PR-62-14: Sludge Circulating Piping Changes, October 1962

  • PR-65-1: Sewage Treatment Works Oxidation Pond, August 1965 (25.6 MB)

  • PR-65: Oxidation Pond Additions, August 1965

  • PR-66-5: 1967 STP Modifications, February 1967

  • PR-69-5: Sewage Treatment Works 1969 Enlargements and Modifications, June 1969 (20.8 MB)

  • PF-73-2: Water Pollution Control Plant Drawings for Tertiary Facilities, July 1975 (21.9 MB)

  • 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-89-10: Lab/Tertiary Control Building Modifications and Administration Building Expansion, Phase 1, Locker Room Addition, April 1989

  • PR-90-9: Barscreen Replacement Project, August 1990

  • PR-93-10: Sludge Dewatering Improvements, July 1993

  • PR-93-11: Surface Aerator Installation, September 1993

  • PR-98/10-99: Upgrade of Electrical System, May 1999

  • STP-1955: City of Sunnyvale Sewage Treatment Works, March 1953

  • STP-1961: City of Sunnyvale Sewage Treatment Plant Enlargement, July 1961

  • 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-96-01: Oxidation Pond Levee Improvements, September 1996

  • UY-00-02-01 and UY-02-02-03: Chemical System Improvements, April 2004

  • UY-00-06-01: Air Flotation Tank Gate Actuators, October 2002

  • UY-02-07-03: Oxidation Pond Levee Improvements Phase 4, April 2006

  • UY-04-01-05: Laboratory Building, August 2005

  • UY-05-04-06: Tertiary Plant Tank Drainage System Modifications, April 2010

  • 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

  • UY-11-01-12 Digester 1,2,3 Rehab, February 2018 (34.1 MB)

  • UY-12-09-15 Hypochlorite Conversion and Continuous Recycled Water Production Facilities, August 2018 (131 MB)

  • UY-14-01-15 Emergency Flow Management Improvements, July 2018

  • UY-15-01-19 Primary Treatment Package 1, June 2016 (71.9 MB)

  • Primary Control Building Remodeling, February 1993

• WPCP Manuals and Data

  • Sunnyvale WPCP O&M Manual

  • Influent Hourly Flow Data (xlsx)

• Other plans, studies, and reports

  • Asset Condition Assessment, 2006

  • Strategic Infrastructure Plan and Peer Review (zip, 17 MB)

  • Collection System Master Plan

  • City of Sunnyvale Primary Effluent Pipeline Evaluation, 2014

  • Sunnyvale Cleanwater Program Facility Condition Assessment Report, 2018 (28.0 MB)

  • Sanitary Sewer Influent Pipeline Inspection (MH 652-214 to MH 652-212), 2019

  • DMF Condition Assessment, 2016

  • FGR TM - Results of the Mode 1 Operational Trial, 2012 (Addendum No. 3)

  • Hazardous Materials Business Plan – Sunnyvale WPCP, 2016 (Addendum No. 3)

  • WIFIA Letter of Interest – Sunnyvale CA, 2018 (Addendum No. 3)

• Permits

  • NPDES

  • Title V

  • Fire Prevention and Environmental Programs Consolidated Permit