Services of the San Francisco Public
Utilities Commission
San Francisco
Groundwater Supply Project
CAC Water Subcommittee
November 19, 2012
Jeff Gilman
Groundwater Project Manager
N orth Westside
Basin
South Westside Basin
2
Overview
• WSIP Level of Service Goals
 Water Supply Reliability – diversifies water supply options
 Delivery Reliability – provides operational flexibility
 Seismic Reliability – emergency drinking water supply
• Project Scope
 Up to 4 mgd average annual groundwater supply in SF
 6 groundwater well facilities
 5 miles of new groundwater pipelines to deliver water to
Sunset Reservoir for blending
Project Facilities
• Phase I – 4 new wells
• Phase II – convert 2
existing irrigation wells
• Blend groundwater with
imported HHRWS water
at Sunset and Sutro
Reservoirs
• Resulting blend will
contain about 3% - 13%
groundwater
Project Benefits
• Expands and diversifies SFPUC’s water supply
portfolio to increase system reliability
• Increases the use of local (San Francisco) water supply
sources
• Reduces dependence on imported surface water
• Provides emergency potable supply in event of
earthquake or other major catastrophe
Environmental Issues
• Goal – operate project sustainably to avoid adverse
environmental effects
• Potential effects – seawater intrusion, Lake Merced,
well interference
• Significance – potential effects will be evaluated in
Draft Environmental Impact Report (January 2013)
• Operating strategy – step-wise increase in gw
production with concurrent monitoring
Schedule and Status Update
Schedule
• Environmental: Notice of Preparation released December
2009. Draft EIR expected early 2013. Certification in late 2013.
• Design: 2009 - 2013
• Bid and Award: 2013
• Construction: 2014 - 2016
Status
• Extensive monitoring well network in place and monitored
(WQ, groundwater levels) since 2004
• Test wells constructed at 4 new sites (2007 – 2011) provide
confirmation of WQ and well yield
• Completed modification and permitting of SF Zoo well for
emergency use in 2007
Public Outreach – Water Tasting
• SFPUC held 7 taste-test events
in September and October
2012
• Demonstrates our
commitment to provide highquality water
• Over 700 participants in blind
tasting
• In process of tabulating results
and comments
8
Thank you!
Jeff Gilman
Groundwater Project Manager
415-551-2952
[email protected]
Operated by the San Francisco Public Utilities
Commission
Regional Groundwater Storage
and Recovery Project
Water CAC Subcommittee
November 19
Greg Bartow
Groundwater Program Manager
Services of the San Francisco Public Utilities Commission
Overview
• WSIP Water Supply Level of Service
• Essential to meet dry year water supply needs
• Scope Summary:
• Develop a Regional In-Lieu Conjunctive Use Project with City
of Daly City, City of San Bruno, and Cal Water in the South
Westside Basin
• Design Capacity is 7.2 MGD over a 7.5 year drought
• Full SFPUC Storage Account of 60,500 acre-feet
2
Project Description
• 60,500 acre feet water
savings account - enough
to serve 24,000
households
• 16 new wells, extraction
of 7.2 mgd
• Protects against multiyear drought, up to 7.5
years of continuous dry
conditions
Water Savings Account is Created by Storing
Water in Wet Years, and Pumping in Dry Years
2. Groundwater
fills storage
space
1. I nitial
groundwater level
3. Groundwater is
pumped from storage
Project Benefits
• Serves 2.6 Million People & Businesses
• Builds a water savings account for dry years and/or
emergencies
• Provides for local aquifer storage:
• Provides drinking water benefits
• No evaporative losses
• Reduces pumping (lift) costs during most years
•
GSR Schedule Update
Schedule
• Environmental: Notice of Preparation released June 2009.
Draft EIR expected early 2013. Certification in late 2013.
• Design: 2010-2013
• Bid and Award: 2013
• Construction: 2014-2016
Status
• Monitoring wells constructed near all 16 sites for initial
characterization (WQ, water levels, geology)
• Test wells constructed at 6 sites (2012) provided confirmation
of WQ and well yield. Remaining 10 to be constructed in
2014.
Thank you
Greg Bartow
Groundwater Program Manager
415-934-5724
[email protected]