Item 4.2 - PowerPoint presented by staff at meetingRegional Water Reuse Plan
and Secondary Equivalency
for a Smaller Capacity
Point Loma Wastewater Treatment Plant
City Council
July 15, 2014
Metro Wastewater Joint Powers Authority
Twelve Member Agencies
35% of Flow & Cost of SD Metro WW System ($348 m)
County of San Diego (18.95%)
Supervisor Diane Jacob
City of Chula Vista (28.31%)
Mayor Cheryl Cox (Chair)
City of Coronado (4.22%)
Councilmember Barbara Denny
City of Del Mar (0.42%)
Councilmember Sheryl Parks
City of El Cajon (13.68%)
Councilmember Tony Ambrose
City of Imperial Beach (3.84%)
Councilmember Ed Spriggs
City of La Mesa (7.63%)
Mayor Art Madrid
City of National City (7.78%)
Councilmember Luis Natividad
City of Poway (6.06%)
Councilmember John Mullin
Lemon Grove Sanitation District (3.77%)
Councilmember Jerry Jones
Otay Water District (0.67%)
Director Jose Lopez
Padre Dam Municipal Water District (4.67%)
Director Jim Peasley
San Diego Metropolitan Wastewater System
Point Loma: 240 MGD
North City Water Reclamation
Plant: 30 MGD
South Bay Water Reclamation
Plant: 15 MGD
Metro Biosolids Center
Point Loma Ocean Outfall
South Bay Ocean Outfall
Metro Wastewater Pump
Stations/Pipelines
240 mgd permitted capacity
180 mgd current average
278 mgd build out
Point Loma Wastewater Treatment Plant
Outfall:
4.5 miles
320 feet deep
Point Loma Permit
1972 Clean Water Act
San Diego was sued
◦45 mgd reclaimed water & additional studies required
Current Permit EXPIRES July 31, 2015: app due January 2015
◦Negotiations and work underway now
2012 Coastal Commission forewarning
Environmental community position
Status of other large treatment plants
Secondary upgrade $2.1 billion & 20 years of data
Wastewater Treatment Levels
Primary
o 65% Solids Removal
Advanced Primary (Point Loma)
o 88% Solids Removal
Secondary
o 90% Solids Removal
Tertiary (North City, South Bay)
o 99% Solids Removal
Problem #1:
· Permit expires 2015
· Science says no
environmental harm
· Therefore Modified
Permit granted
· Modified permit allows
Advanced Primary
= $2.1 Billion
Problem #2:
· San Diego at end of
water supply pipeline
· Imported water at risk
as competition for the
resource rises
· Imported water expensive
and prices continue to rise
· New, local, diversified water
supply is the best solution
SOLUTION
Use Problem #1 To Fix Problem #2
•Secondary Equivalency 240 mgd treated to secondary level
•Potable Reuse Offloads Point Loma AND
increases local water supply & control
Solution
Divert substantial wastewater flows
through implementation of a Regional Water
Reuse Program focused on potable reuse
Permit SMALLER secondary equivalent Point Loma that
reduces wastewater flows to the ocean
= NO MORE WAIVERS/LESS RATEPAYER RISK
= 83 mgd new, locally controlled water
= $300,000,000 in avoided cost
Local Sewer CIP &
Op Costs
Future Needs?
PL Upgrade: $2.0B Capital
(not including debt)
+ $40 m/yr Operating
IPR: $1.8B Capital
(not including debt)
$100 m/yr
Operating
Regional Sewer
Capital: $90.1M
Annual Op: $216.3M
Future Needs?
State Regulatory
Enhancement
Local Water CIP &
Op Costs
Future Needs?
Impact of Local Supply
Projects on MWD and
SDCWA Rates
Desal Cap & Op
Carlsbad: $1.0B Capital
? Operating
Pendleton: $1.9B Capital
? Operating
Rosarita Beach: $500M Capital
? Operating
Regional Water
Capital: $3.6B
Annual Op: $1.4B
Future Needs?
State Water
Delta Fix Bonds: $50B-$60B
Construction: +?
Operating: +?
Cost estimates are currently wide-ranging and
subject to change Areas not currently included in rates
Regional Water Demand Projections
(From San Diego County Water Authority 2010 UWMP )
San Diego Recycled Water Study
Outlines Alternatives
Includes 83 MGD of Indirect Potable Reuse
Places water in San Vicente and Otay
Water Reservoirs
Significantly reduces planned wastewater
flows to Point Loma
Potable Reuse (IPR and DPR)
San Diego Water Reuse Demonstration Project
Proved ability to re-purify wastewater at
operational flow rates
Quality of water similar to distilled water—
Far Superior to Current Raw Water Sources
Negotiating Points
Secondary Equivalency
Facilities Plan
◦At least 83 mgd by 2035
◦First 15 mgd by 2025
Legislation
Cost and Benefit Sharing
Next Steps
Conclude Phase 1 Negotiations
Return to Poway City Council in September
Metro Commission vote (10/2)
Submit permit application (1/2015)
Questions/Discussion