doing more with less “integrated water reuse and planning ... · pdf...
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Doing More With Less…“Integrated Water Reuse and Planning Strategies”
Ken Ortega, Public Works DirectorRocky Mountain Land Use Institute - 06MAR09
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City of Oxnard“More than just another pretty name…”
• Incorporated 1903• Area ≈ 24 Sq. Miles• 16th largest City in State• 62 miles NW of Los
Angeles• 35 miles south of Santa
Barbara• Mediterranean climate• Strawberry capital of the
world• Growing community• Limited Water resources!
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• Water system built for small agricultural town
• No elevated storage, dynamic production
• Multiple water sources Aquifers Imported Water Surface Water
City of OxnardWATER RESOURCES HISTORY
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WATER SUPPLY VS. DEMAND
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WATER SUPPLIES(Blending = Quality, Quantity, And Cost Control)
Imported Water(State Water Project)
Pumped/Groundwater(Regional/Local)
+
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IMPORTED (Calleguas)WATER SUPPLIES
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REGIONAL (United Water Conservation District)WATER SUPPLIES
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SUPPLY COST COMPARISON
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MUNICIPAL & INDUSTRIALSupplemental Water Program
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DEMAND MANAGEMENT PROGRAM
• Implement All Feasible Best Management Practices of California Urban Water Conservation Council
• Implement All Feasible Programs of Metropolitan Water District
• Water Savings Goal - Match Water Losses
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Best Management PracticesWhat we are doing vs. What we are not
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Sustainability ChallengesWater Supply Outlook
Precipitation and climateEndangered speciesConveyance weaknessesInadequate storageWater CutbacksLand-Use restrictions
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Sustainability ChallengesPrecipitation and Climate
Statewide Precipitation- Continues to be Below Average- Trend of Lower Snowpack
Colorado Basin Precipitation- Average Precipitation- Competing Demands
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Sustainability ChallengesEndangered Species Act Compliance
Bay-Delta- Blue Ribbon Task Force
Santa Clara River- Diversion cutbacks and yield loss
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Endangered Species – Bay DeltaDelta Endangered Species Restrictions
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Sustainability ChallengesConveyance Weaknesses – State Water Project
Bay-Delta Levees- Bond $$$- Economic Stimulus $$$
Delta Bypass Conveyance- Blue Ribbon Task Force- Competing interests
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Sustainability ChallengesSurface Storage – State Water Project
Reservoirs Low- Multiple dry years- New storage very unlikely
State of Emergency- Drought declaration
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Sustainability ChallengesWater Cutbacks – Federal, State, and Local Regulations
State Water Project- Reduced Bay-Delta exports- Mandatory Conservation Ordinance- Limit MWDSC Annexations
Santa Clara River- Freeman Diversion cutbacks- Potential Yield-loss
Fox Canyon GMA- 10% scheduled cutbacks- Further cuts necessary- Basin-by-basin management- Focus on Local Groundwater Supplies
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Sustainability ChallengesLand-Use Restrictions vs. Water Supply
General Plan Land-Use boundary restrictions- Sphere of influence and City Urban Restriction Boundary- SOAR Initiative’s unintended consequences
Urban Water Management Planning- General Plan/UWMP/Master Plan(s)
California Urban Water Conservation Council- Best management practice implication(s)
CEQA Implications- SB 221/610: Water Supply Availability/Verification- Vineyard Case
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Water Supply Outlook“City response: IMPROVED LOCAL RELIABILITY”
Step-Up Conservation ProgramEnforce Water Waste ProhibitionRaise Tiered Conservation RateRegional TransfersGREAT Program
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“Necessity is the mother of invention…”
roundwater
ecovery
nhancement
nd
reatment
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GREAT Program Desalter Facility
• Maintains Blended WaterQuality Objectives Phase I - 7.5 mgd Ultimate - 15.0 mgd
• LEED Certification Elements Low flow toilets and urinals Low e glass Window operators w/timers for
ventilation Heat Pump HVAC system 60KW solar electricity system Stormwater detention and
treatment Sample water reuse for
irrigation Permeable paving Wetlands Restoration
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BLENDING STATION NO. 1 DESALTER
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GREAT Program Desalter Facility
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GREAT Program Desalter Facility
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DESALTER MILESTONES
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Advanced Water Purification Facility
• Produces High-QualityRecycled Water Phase I - 6.25 mgd Ultimate - 25.0 mgd
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Advanced Water Purification Facility(Process Flow Schematic)
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Advanced Water Purification FacilityWest Elevation
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Advanced Water Purification FacilitySouth Elevation
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AWPF MILESTONES
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Recycled Water Backbone System
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Recycled Water Distribution Timeline
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• Multiple water sources Phase I - 3,081 AF/Year to
Ag. Users and Seawater Intrusion Barrier Pilot Injection Well
Phase II - 23,141 AF/Year to PTP and PV Systems
RECYCLED WATER DISTRIBUTION
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Oxnard Water Source vs. Energy(Energy Breakdown)
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Carbon Footprint of Water Resources(Carbon Footprint)
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GREAT Program Benefits• Meets growing water demands and reduces
reliance on imported water
• Reduces energy demand and carbon footprint that contribute to climate change
• GREAT Desalter Lower energy demand than the State Water Project LEED Certified Facility Public Education /Outreach opportunities
• Recycled Water (RW) Benefits RW injection provides seawater intrusion barrier Offsets groundwater extraction restrictions Reduces overall potable water demand Requires less energy than other available water sources
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City of Oxnard Water Portfolio