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Home My WebLink AboutRegional Water Reuse Plan Power PointRegional Water Reuse Plan and Secondary Equivalency for a Smaller Point Loma Wastewater Treatment Plant July 2013 METRO - METRO WASTEWATER 3 PA Metro Wastewater Joint Powers Authority Twelve Member Agencies 35% of Flow & Cost of SD Metro WW System County of San Diego City of Chula Vista City of Coronado City of Del Mar City of El Cajon City of Imperial Beach City of La Mesa City of National City City of Poway Lemon Grove Sanitation District Otay Water District Padre Dam Municipal Water District METRO WASTEWATER PA Challenges Create a New, Local, Diversified Water Supply Avoid Upgrade of Point Loma Wastewater Treatment Plant (PLWTP) to Secondary Saving Billions of Dollars METRO WASTEWATER J p Solution Divert Substantial Wastewater Flows from PLWTP through Implementation of a Regional Water Reuse Program Focused on Potable Reuse Permit SMALLER Secondary Equivalent PLWTP that Reduces Wastewater Flows to the Ocean METRO WASTEWATER J p Regional Water. Capital: $3.6B Annual Op: $1.4B Future Needs? Desal Cap & Op Carlsbad: $1.0E1 Capital ? Operating Pendleton: $1.9B Capital ? Operating Rosarita Beach: $500M Capital ? Operating State Water Delta Fix Bonds: $508-$60B Construction: +? Operating: +? IV/ Impact of Local Supply Projects on MWD and SDCWA Rates Areas not currently included in rates Local Water CIP & Op Costs Future Needs? use: Cost estimates are currently wide-ranging and subject to change Comparing the Cost of Water S 4,500 $4,000 $3,500 p $ 3,000 Unit Costs ($ per $2,500 52,000 $1,500 S 1 ,000 $$00 5- 2005 2010 San Diego County 'Water Authority pro{acts imported untreated water rote to increase 5.,8`s;i annually, through the year 2020 2015 020 2025 Year 2030 r r • 2035 Beyond 2020; Range of im pc+rled untreated water rote projections based on 3-to-6% annual increases 2040 2045 Projected cost of purified water (solid line) of a full-scale reservoir augmentation project at San Vicente Reservoir compared to actual and projected costs of untreated imported water (dashed lines). Regional Water Demand Projections (From San Diego County Water Authority 2010 UWMP ) TABLE 2-5- NORMAL YEAR REGIONAL WATER DEMAND FOREC. ADJUSTED FOR WATER CONSERVATION IAF) Total Regional Baseline Demand Additional Conservation 90Q000 850,000 800,000 Z.: 750,000 4, 700,000 550,000 600,000 150,000 500,000 450,000 654,022 722,040 790,229 850,899 903,21_3 -6,737 -46,951 -72,234 -97,280 -117,528 Figure 2-2 illustrates the forecasted trend in projected water demands over the 2015 to 2035 time period. This figure combines historic water use and forecasted normal year demands reduced by future additional conserva- tion savings. FIGURE 2-2: REGIONAL HISTORIC AND PROJECTED NOR WATER DEMANDS (AF) 144a0=-2410 41tateric Dennund ,y. San Diego Metropolitan Wastewater System PLWTP: 240 MGD North City Water Reclamation Plant (NCWRP): 30 MGD South Bay Water Reclamation Plant (SBWRP): 15 MGD Metro Biosolids Center (MBC) Point Loma Ocean Outfall (PLOO) South Bay Ocean Outfall (SBOO) Metro Wastewater Pump Stations/Pipelines trAstru rrrrAn Del Faint I or* tiaa;solcr :r, lfY gttP sR;w4nR PUMn 4rn'�a=r rrrraorrai Strict" Orry Pryor FV)ratlf•w lark tde Arp- SD San Diego County una.r 11 PirNlnatyrapopri Pipet ne,vosndrwrr FtvrclorrImhan Ptl111t Sarre I MWn Wsstawaua Pselklpoting Agency Cory of SonOleo Id W W6 Syxre Wastewater Treatment Levels Primary o 65% Solids Removal Advanced Primary (PLWTP) 87/88% Solids Removal Secondary 90% Solids Removal Tertiary (NCWRP, SBWRP) 99% Solids Removal METRO WASTEWATER PA PLWTP Permit Background Clean Water Act (1972) Wastewater Treatment Plants Require Permits Secondary Treatment Required $ Act Amended to allow Modified Permits at Less Than Secondary METRO WASTE WATE R PA PLWTP Permit Background (cont'd) Wastewater Treatment Plants MUST get a Permit or Modified Permit every 5 years Environmental Protection Agency Regional Water Quality Control Board State Water Resources Control Board California Coastal Commission METRO WASTEWATER J P PLWTP Permit Background (cont'd) City of San Diego Submitted Modified Permit Application Later withdrew Modified Permit Application Timeframe for Modified Permits Closed • EPA sued the City METRO WAS IEWATER,RA PLWTP Permit Background (cont'd) Ocean Pollution Reduction Act (OPRA)(1994) Then -Congressman Filner Sponsored Allowed San Diego to apply for a Waiver San Diego agreed to build 45 MGD of Water Reclamation Capacity (NCWRP, SBWRP) METRO WASTEWATER J PA PLWTP Permit Background (cont'd) Since then: San Diego applies for a Modified Permit every 5 years Environmental Community Support for Modification Required: Refined estimate of cost to convert 240 MGD to Secondary In 2006, $1Billion capital w/o financing or operating costs Comprehensive external scientific review AND upgrade of Ocean Monitoring Program Water Reuse Study, Recycled Water Study and Water Reuse Demonstration Project METRO WASTEWAIERJP PLWTP Permit Background (cont'd) 44 Current Permit .= July 31, 2015 Permit application due January 2015 • Work begins METRO WASTEWATER PA 410 San Diego Recycled Water Study Outlines Alternatives to Divert Almost 100 MGD from PLWTP Includes 83 MGD of Indirect Potable Reuse Facilities near Harbor Drive, NCWRP and SBWRP Discharges water to San Vicente and Otay Water Reservoirs Reduces planned wastewater flows to PLWTP from 240 MGD to 143 MGD METRO WASTEWATER J pA San Diego Water Reuse Demonstration Project Proved ability to repurify wastewater at operational flow rates Quality of water similar to distilled water Far Superior to Current Raw Water Sources METRO WASTEWATER PA ET Treated :pp 'APR Projected Cost Comparisons Gross Cost 1.70 Does not in local wa in plann ant, ,ust ;ent for 1 2 -AF of`,;j;;; evelopment or 6St ;000 AF tate mandated-conser'�vati SDCWA Projection 03/15/2011 .2.012 Le$sAvoided CIP. Less Salinity SDCWA News Release 03/08/13 Less Pt Loma Upgrades. City of San Diego Recycled Water Study Presentation 05/03/12 Pozen ial Avoided/Dov insized Project: of San• Dlego: .LW Secondary Treat SDCWA: Camp Pendleton Desal SDCWA:`Colorado River Transmission,, SDCWA: Local Pipeline Conveyance Constraints State Bay,Delt'a .Conveyance 2020+ 2013 Cost Projection ID on $15.72 Billion lion YTBD i0 --:$60 Billion' 280 260 240 "c3 220 2 Historical Metro Sewer System Generated Flow Vs. Point Loma Wastewater Treatment Flow UIGO - 2050 PROJECTION 255 MGD - CURRENT SYSTEM CAPACITY 240 MGD - CURRENTS CAPACITY 0 200 100 -- System Genera led Flow PLW7P Treated Plow 991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 Z003 2009 2010 2011 2012 Prior to 2001 both indtdo Tejua u en ergencg nava, alto rl001 ddischaringto M+ttrosystern 130c0 9000 8000 7000 600 5000 -- 995 Actual T5S MER 2000 TSS MASS EMISSION RATE POINT COMA WASTEWATER TREATMENT PLANT 2005 2010 2015 2020 2025 Current Permit TSS MER Limit (13,598) T55MER at140MGD /CEPT( TSS MER at 240 MGD / secondary ( 9,942) 2 2035 2040 2045 2050 Recommendations Create Long Range NO year) Regional Water Reuse Program focused on potable water reuse that: Provides new, local, sustainable water supply (z83 mgd) Offloads PLWTP to =143 MGD Obtain Legislation to permit SMALLER SECONDARY EQUIVALENT PLWTP (443 MGD) that: Avoids billions of dollars in capital, financing, energy and operating costs Continues to protect the ocean environment METRO WASTEWATER a P 31 Current Metro Wastewater System C.M.T17,5.1 PL Metro Wastewater Master Plan T rou h 2050 P PLWTP (240 MGD) NORTH ------ ------------W--- SBWTP 21 MGD 1 28 MGD 1 49 MGD San Diego Recycled Water Study It ti ve PL PLWTP (143 MGD) BOO AWPF (52.8 MGD) NORTH San Vicente Reservoir -► RP (15 MGD) AWPF (15 MGD ------------- SBWTP 29 MGD 18 MGD 47 MGD