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Encina Wastewater Authority’s Recycling Program
SAN DIEGO WATER BOARD MEETINGJUNE 12, 2019
2018• 6,251 Dry Metric Tons (dmt) produced
• 5,172 dmt Class A to Yuma
• 518 dmt Class B to Yuma
• 560 PureGreen to Nurseries, Fertilizer wholesaler’s, FAA
2019 Imperial Country measure X repealed. 2019 650 dmt to IC.
Class A product has tendency to reheat.
Digester cleaning and rehabilitation project.
Biosolids
Co-Generation2018• 14,993 Mwh 236,067,000 standard cubic feet
2017
• 13,482 Mwh 210,640,000 scf
2016
• 12,963 Mwh 203,226,000 scf
December 2017 digester gas annual limit was increased to 280 million scf from 224 million scf.
Alternative fuel receiving facility currently accepts brewery waste and FOG from grease traps.
WATER REUSE FEASIBILITY STUDY, Scott McClelland
EWPCF Projected Flows from Recent Process Master Plan
DEPARTMENT NAME ALL CAPS, Presenter Name
15
20
25
30
35
40
45
1985 1990 1995 2000 2005 2010 2015 2020 2025 2030 2035 2040
Flow
(mgd
)
Historical Flow Project Flow by Population Growth Projected Flow by Linear Regression
Projected flow by 2040
Phase V Design Capacity
Maximize Non-Potable Reuse of EWPCF Effluent(2040 Summer Flows)
18.5 mgd
10 mgd
2.5 mgd
Maximize use of EWPCF with Potable Reuse(2040 Summer Flows)
15.7 mgd
2.0 mgd20.5 mgd
2.8 mgd
Potable Reuse Receptor(s)
10 mgd
2.5 mgd
(to outfall)
Context:Water in San Diego
EWA Service Area
WATER AGENCIES WASTEWATER AGENCIES
Carlsbad MWD (City) City of Carlsbad
Olivenhain MWD Leucadia WWD
San Dieguito WD (Encinitas)
Encinitas SD (City)
Vallecitos WD Vallecitos WD
Vista ID City of VistaBuena SD (City of Vista)
EWPCF
EWA Service Area
SDCWA MAs:
EWA Member Agencies
SDCWA Agencies in EWA service area
NEXT STEPS TO ADVANCE THE REUSE PROJECT• Develop partnerships with water agencies
• Identify institutional arrangements needed (e.g., MOUs)
• Explore funding opportunities:• Federal (USBR, USACE)
• State (IRWM, DWR, SRF)
• SDCWA/ MWDSC (LRP, LWSD, LWSIP)
• Private investment (Poseidon, P3s)