Sunnyvale Cleanwater
Program:
Master Plan Update/Cogeneration
Upgrade Design
CITY COUNCIL MEETING
April 4, 2023
2City of Sunnyvale Cleanwater Program - Master Plan Update – April 2023 Water Pollution Control Plant (WPCP)
Caribbean Drive
16.5± Acre Site
440± Acre Ponds
LandfillLandfill
Approx. Scale: 1” = 7000’
Pond Facilities
3City of Sunnyvale Cleanwater Program - Master Plan Update – April 2023 2006 2008 2010 2012 2014 2016
2008-10
2010-112006 2013-16
Condition Assessment
Strategic
Infrastructure Plan
Peer Review
Strategic
Planning Workshop
Master Plan
2012
Sunnyvale Cleanwater Program: Planning to Date
2018 2020 2022
Projects
Phases 1 and 2
4City of Sunnyvale Cleanwater Program - Master Plan Update – April 2023 • Identified key projects
• Estimated costs
• Recommended
implementation approach:
5 phases
Phase 1 and 2 clearly
defined
Some uncertainty with
Phase 3, 4, and 5
The 2016 Master Plan…
5City of Sunnyvale Cleanwater Program - Master Plan Update – April 2023 Sunnyvale Cleanwater Program: Projects
CAS-1 (Ph 2)
Plant Rehab (Ph 1)
Cogen (Ph 3)
CAS-2 (Ph 4)
Future Tertiary (Ph 3-5)
Future Solids (Ph 3-5)CWC (Ph 2)
Unfunded ProjectsRecycled Water (Ph 2)
6City of Sunnyvale Cleanwater Program - Master Plan Update – April 2023 • The Master Plan is a “living” document
City aims to update every 5-10 years
• Changing conditions
Regulatory changes (e.g. nutrients)
Policy changes (e.g. recycled water)
Aging infrastructure
Increased growth (e.g. from new
service areas)
Changing water quality
New technologies
Why Update the Master Plan?
Corroded Pipe
7City of Sunnyvale Cleanwater Program - Master Plan Update – April 2023 Master Plan Update Drivers
8City of Sunnyvale Cleanwater Program - Master Plan Update – April 2023 Master Plan Update Scope
Evaluate
strategic
issues
Recommend
process
improvements
Plan for
support
systems and
site use
Lay out
updated
scope,
schedule, and
cost
9City of Sunnyvale Cleanwater Program - Master Plan Update – April 2023 Cogeneration Design Need
Single
Project
Cogen
Design
Master Plan
Update
• Existing cogeneration engines are not reliable. This has led to:
Frequent failures at high repair costs
Not meeting emission requirements
Less renewable electricity production and increased flaring of gas to the atmosphere
• Fast-tracking this project by combining with the Master Plan Update
10City of Sunnyvale Cleanwater Program - Master Plan Update – April 2023 Cogeneration Goals
Increase reliability of on-site
renewable electric power generation
from biogas
Decrease consumption of utility-
supplied natural gas
Increase capacity to handle greater
biogas production from the import
and treatment of food waste
Key
Objectives
11City of Sunnyvale Cleanwater Program - Master Plan Update – April 2023 • New cogeneration
engines and facility
• Best available control
technology (BACT)
emissions control
• Biogas safety, handling,
and treatment
improvements
• Hot water loop
improvements
Cogeneration Design Scope
12City of Sunnyvale Cleanwater Program - Master Plan Update – April 2023 Selection and Fiscal Impact
0.3 Master Plan
Update
(Project 834400)
5.1 Cogeneration
Upgrade
(Project 833370)
Total
Total Contract Amount $2,987,072 $4,414,525 $7,401,597
10% Contingency $298,707 $441,453 $740,160
Total Cost $3,285,779 $4,855,978 $8,141,757
• Selected consultant is Hazen and Sawyer, teamed with HDR • Fiscal Impact (Contract Dollars)
13City of Sunnyvale Cleanwater Program - Master Plan Update – April 2023 • Staff Recommendation
Award the Master Plan Update and Cogen Design contract to Hazen and Sawyer Approve a 10% design contingency for the consultant services Closing