CC 2015-11-10 Desal Council PresentationCONSIDERATION OF APPROVAL OF A FORMAL ENDORSEMENT OF INTEREST LETTER TO SLO COUNTY FOR THE ZONE 3 EMERGENCY WATER SUPPLY PROJECT – EXCESS SUPPLY FROM THE PG&E SEAWATER DESALINATION FACILITY
November 10, 2015
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Staff Recommendation
Approve a formal Endorsement of Interest letter to SLO County Board of Supervisors for the Zone 3 Emergency Water Supply Project- Excess Supply from the PG&E Seawater Desalination Facility
and direct staff to engage in discussions with the County.
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DROUGHT TIMELINE
May 2011 City Council Establishes Permanent Water Use Restrictions
January 2014 Governor Declares Drought Emergency
October 2014 City Council approves the Lopez Low Reservoir Response plan
May 2015 Council Adopts Stage 1 Emergency Water Use Restrictions
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DROUGHT TIMELINE (cont.)
May 19, 2015- SLO County (BOS) receives report of potential desalination projects in the County
August 6, 2015- SLO County Public Works Department presented a report to the Zone 3 Technical Advisory Committee (TAC) requesting support for the exploration of potential opportunities
for excess PG&E desal water
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DROUGHT TIMELINE (cont.)
September 17, 2015- Zone 3 Advisory Board submitted a letter to the SLO County Board of Supervisors (BOS) requesting that the County initiate a study session to further evaluate emergency
water supply options for San Luis Obispo County including excess PG&E desal water
October 15, 2015- County of San Luis Obispo Public Works Department requested that the City of Arroyo Grande, as well as the other contracted Zone 3 agencies confirm interest in a potential
Zone 3 Emergency Water Supply project.
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NCMA AGENCIES
WATER SUPPLY PORTFOLIO’S
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Drought Continues
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Diminishing Lopez Reservoir Supplies
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Lopez Storage Projections
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Declining NCMA Groundwater Levels
Source: Q4 2014 Monitoring Report, 2015
Mean Sea Level
Trigger Level
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Preliminary Emergency Supply Options
Cloud Seeding
State Water Project
Unsubscribed Nacimiento Water
Water Market Purchases
Morro Bay Desalination Plant Exchanges
Land Fallowing
Lopez Reservoir Minimum Pool
Enhanced Conservation
Diablo Power Plant Desalination
Nacimiento/California Men's Colony Intertie
Emergency Indirect Potable Reuse Groundwater Recharge
Emergency Seawater/Brackish Water Desalination Facility
Price Canyon Produced Water Recovery
Upper Lopez Wells
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Supply Options Evaluation Criteria
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Preliminary Evaluation
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1The scoring and ranking is not intended to be a comprehensive evaluation, but was designed to provide an initial evaluation of potential supply options for further discussion.
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PG&E Desal- Potential routing
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POTENTIAL CHALLENGES
Lack of an existing pipeline to the nearby water purveyors and communities. Cost.
Lopez Distribution system modifications. Cost.
Location of the existing facility on high-level security private property
Permitting issues and environmental concerns
Additional information needed!
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ADVANTAGES OF RECOMMENTION
Staff Entering discussions only. No commitments at this time.
Zone 3 Distribution system already in place for portion of water delivery. Uniquely located.
Zone 3 Financing mechanism already in place. Lopez Contract accommodates for system improvements
Explored in addition to a recycled water project
Desal Plant already constructed and permitted.
Potential One-time opportunity for a drought resistant water supply
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Staff Recommendation
Approve a formal Endorsement of Interest letter to SLO County Board of Supervisors for the Zone 3 Emergency Water Supply Project- Excess Supply from the PG&E Seawater Desalination Facility
and direct staff to engage in discussions with the County.
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