Orange County Water District. SCAP May 4, 2015

Transcription

1 Orange County Water District SCAP May 4, 2015

2 Orange County Water District Created in 1933 Manage and protect the groundwater basin Serve approximately 2.4 million residents 19 Groundwater Producers 10 member board - three appointed (Anaheim, Fullerton, Santa Ana) Total water demands (groundwater and imported water) ~ 450,000 afy

3 Orange County Water District Powers Charge assessments for groundwater production Store water in the OCWD Basin

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5 Santa Ana River (SAR) Watershed Big Bear Lake IEUA Prado Dam More than 10 major wastewater dischargers into the SAR Approximately 140 MGD of tertiary discharges

6 1969 Santa Ana River Judgment Adjudication of the SAR Resolved years of litigation Generally guarantees OCWD 42,000 afy of SAR base flows OCWD guaranteed all water reaching Prado Dam Established five member water master Established SAWPA

7 FY14-15 Operating Budget $136.6 million

8 Replenishment Assessment and Additional Replenishment Assessment $294/af FY

9 Replenishment Assessment History Groundwater Replenishment System

10 OCWD Service Territory Water Supply Sources to meet Total Water Demands of Approximately 450,000 afy

11 Historical Basin Production Percentage (BPP)

12 AFY OCWD Basin Management Tools Typical Water Utility with 20,000 afy of Total Water Demands 25,000 20,000 15,000 10,000 BPP 72% Pay RA & BEA Pay RA Basin Production Percentage (BPP) Set Annually - Assume 72% Replenishment Assessment (RA) Paid for groundwater pumping below BPP - $294/af 5,000 0 Basin Equity Assessment (BEA) Paid for groundwater pumping above the BPP in addition to the 12 RA - $597/af

13 Groundwater Production History

14 OCWD Groundwater Basin Accumulated Overdraft Target Overdraft Basin Operating Range

15 1,100 acres of recharge facilities (44km 2 ) ~ 250,000 afy of recharge into groundwater basin (308 million m 3 /year)

16 Desired Seawater Holding Point Seawater Intrusion Injection Wells Production Wells Pacific Ocean Talbert Aquifer Current Extent of Seawater Intrusion

17 Water Conservation at Prado Dam Elevation 505 ft (19,800 af) Non-flood Season Elevation 498 ft (9,300af) Flood Season Prado Dam Santa Ana River Pacific Ocean

18 Proposed Huntington Beach Desalination Facility

19 Poseidon Resources Huntington Beach Ocean Desalination Plant Proposed 50 mgd 56,000 afy $670 million ~ $1,925/af unit price (2014) Would reduce need for MWD imported water Poseidon working to obtain - Coastal Commission permit OCWD may partner with Poseidon

20 The Groundwater Replenishment System A joint project of the: Orange County Water District and the Orange County Sanitation District

21 What Is The Groundwater Replenishment System (GWRS)? New 70-MGD advanced water purification facility Takes treated sewer water that otherwise would be wasted to the ocean, purifies it to near distilled quality and then recharges it into the groundwater basin Provides a new 72,000 acre-feet per year source of water, which is enough water for over 500,000 people Operational since January 2008

22 Agency Responsibilities Sewage Orange County Water District provides local water retailers with a reliable, adequate, high-quality groundwater supply at the lowest reasonable cost in an environmentally responsible manner Orange County Sanitation District protects public health and the environment by providing effective wastewater collection, treatment, and recycling Source Control OCSD OCWD Primary Treatment Secondary Treatment Advanced Water Purification Reuse

23 OCWD & OCSD Partnership Anaheim Recharge Basins Talbert Seawater Barrier Facilities OCWD GWRS OCSD #1 OCSD #2 Discharge to Ocean

24 GWRS Advanced Water Purification Process OCSD Secondary Effluent Normally Goes to Ocean Microfiltration (MF) Backwash Sent to OCSD Reverse Osmosis (RO) Brine Treated in OCSD Outfall Ultraviolet Light (UV) with Hydrogen Peroxide Seawater Barrier Recharge Basins in Anaheim

25 Why Do We Need The GWRS? Extended drought Imported water shortages Colorado River losses State Water Project losses Environmental restrictions Potential levee failures San Luis Reservoir before and now. Gov. Schwarzenegger declares emergency Local Projects lessen dependency on outside sources

26 GWRS Project Funding $481 Million Capital Cost OCSD Contribution, $196,000,000 OCWD, $196,000,000 State Grants, $69,000,000 Federal, Grant, $20,000,000

27 FY Operating Cost Item Annual Cost Cost/AF Electricity $8,737,384 $132 Chemicals $3,508,049 $53 Labor $8,526,945 $129 R&R Fund Contribution $5,898,996 $89 Plant Maintenance $3,346,337 $51 Debt Service $11,500,000 $174 $41,517,707 $627 Operating Subsidies ($7,573,552) ($115) Total Net Cost $33,944,156 $513/af

28 Strong Community Support Proactive face-to-face outreach with more than 1,200 presentations, 700 tours and many news stories that resulted in: No active opposition and support from: 100% support from cities in OCWD service area 100% support from OC state and federal elected officials 100% support from Chambers of Commerce & OCBC Many business including Edison and Semper Energy All major environmental groups Several health experts, medical doctors, hospitals, pharmacists and scientists Several key minority leaders Educational, religious, police and fire leaders More than 200 community groups like Kiwanis, Rotary, etc. OC Tax, AARP, OC Farm Bureau and others

29 GWRS Expansion Project $142 million Create additional 30 mgd of treatment capacity 31,000 afy of new local water Project construction complete Commissioning expansion Complete work this spring

30 GWRS Aerial View