HomeMy WebLinkAbout06.a. Recycled Water Policy DiscussionItem 6.a. J uly 20, 2021 T O: R E A L E S TAT E, E NV I R O NME NTA L A ND P L A NNI NG C O MMI T T E E F RO M :ME L O D Y L A B E L L A , R E S O UR C E R E C O V E RY P R O G R A M MA NA G E R RE V IE WE D B Y:J E A N-MA R C P E T I T, D I R E C TO R O F E NG I NE E R I NG A ND T E C HNI C A L S E RV I C E S R O G E R S. B A I L E Y, G E NE R A L MA NA G E R S UB J E C T: R E C YC L E D WAT E R P O L I C Y D I S C US S I O N I n response to a request from the Real Estate, E nvironmental & Planning C ommittee (R E E P) Committee, staf f has prepared the attached presentation, which will be brought to the f ull Board on August 5, 2021. T he purpose of the presentation is to provide background to assist the Board in determining its direction to staf f on how to proceed with the development of f uture recycled water projects that use Central S an's wastewater supply. Staf f looks forward to reviewing this presentation and receiving the C ommittee's input at this meeting. Strategic Plan Tie-I n G O A L TW O: Environmental Stewardship Strategy 3 – Support regional development of local water supply AT TAC HM E NT S : D escription 1. P resentation July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 36 of 71 Page 1 of 24 1 CENTRAL SAN RECYCLED WATER POLICY DISCUSSION Melody LaBella, P.E. Resource Recovery Program Manager Real Estate, Environmental & Planning (REEP) Committee Meeting July 20, 2021 PRESENTATION OUTLINE 1.Overview of Central San’s Recycled Water Initiatives 2.Review of Central San’s Water Recycling Efforts 3.Central San’s Board Recycled Water Initiatives 4.Constraints Associated with Recycled Water 5.Summary of Current Commitments 6.Policy Questions 7.Questions/Discussion/Direction 2 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 37 of 71 Page 2 of 24 2 1. OVERVIEW OF CENTRAL SAN’S RECYCLED WATER INITIATIVES 3 Filter Plant &  Clearwell Plant  Utility  Water Zone 1  Recycled  Water  Temporary  Diversion by  DERWA Diversion by Golf  Courses: •Diablo Country Club •Moraga Country Club Martinez Refineries Suisun Bay Discharge Treatment  Plant RO ConcentrateAdvanced  Treatment  Facilities Concord  Reuse  Project  Refinery Recycled  Water Exchange  Project (Santa Clara  Valley Water  District) CURRENT CENTRAL SAN RECYCLED WATER INITIATIVES 4 Contra Costa  Water District  (CCWD) July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 38 of 71 Page 3 of 24 3 2. REVIEW OF CENTRAL SAN’S WATER RECYCLING EFFORTS 5 ORIGINAL REFINERY PROJECT FACILITIES •Forebays and Applied Water Pumps •Filter Plant •Clearwell •Conveyance Facilities •Distribution Storage Tanks Status: Project was constructed, but never moved forward. 6 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 39 of 71 Page 4 of 24 4 •Central San owns and operates a recycled water distribution system called “Zone 1.” •In 2020, Central San sold ~217 million gallons of recycled water. •Central San’s Wastewater Treatment Plant uses about 1 million gallons per day (MGD) of recycled water. CENTRAL SAN’S ZONE 1 RECYCLED WATER PROGRAM 7 ZONE 1 RECYCLED WATER DISTRIBUTION SYSTEM 8 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 40 of 71 Page 5 of 24 5 ZONE 1 PIPELINE CUSTOMERS •Contra Costa Country Club Golf Course •Buchanan Fields Golf Course •Diablo Valley College •Mt. Diablo Unified School District •Pleasant Hill Recreation and Park District •Contra Costa County •Business in the Diamond Blvd. area of Concord •Coco San Sustainable Farm 9 COMMERCIAL TRUCK FILL PROGRAM •Provides recycled water to licensed contractors for construction activities such as dust control, soil compaction, and plant establishment. •Contractors can access recycled water via purple fire hydrants or from Central San’s Commercial Fill Station. •Recycled water provided through this program is free of charge. One of Central San's three hydrants (left) and a portable meter (middle) that contractors can use to obtain Central San’s recycled water. Central San’s Fill Station (right). 10 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 41 of 71 Page 6 of 24 6 RESIDENTIAL FILL STATION The Residential Fill Station Program allows central Contra Costa County residents to pick up recycled water free of charge at our Household Hazardous Waste (HHW) facility in Martinez for hand-watering lawns, landscaping, and gardens. How to use this program: •Complete an Application/Use  Agreement and a brief training class on  the proper use of recycled water •Brings containers with watertight lids; 1  gallon minimum to 300 gallon maximum •Use appropriately‐sized containers and  vehicles for transport (water is heavy!) •Unlimited trips allowed 11 CURRENT INVESTMENT IN RECYCLED WATER FACILITY IMPROVEMENTS -PHASE 1A - $35.8 MILLION (M) •Replace Backwash Motors (480V) •Recycled Water Storage: o Replace East Clearwell with two new above ground storage tanks (steel or pre-stressed concrete) •Clearwell Overflow Structure Modifications •Rehabilitation one Filter (# 3) and Mechanical/ Instrumentations on others •Upgrade Chemical Feed •Applied Water Pump Station (AWPS) Upgrade/Replace Electrical Gear •New Recycled Pump Station Electrical Facility •Replace Substation 40 - 2400V •Replace Variable Frequency Drives for AWPS West  CW 12 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 42 of 71 Page 7 of 24 7 DUBLIN SAN RAMON SERVICES DISTRICT –EAST BAY MUNICIPAL UTILITY DISTRICT RECYCLED WATER AUTHORITY (DERWA) DIVERSION 13 GUIDING PRINCIPLES FOR CENTRAL SAN’S AGREEMENT WITH DERWA 1.No Adverse Financial Impact to Central San 2.No Adverse Financial Impact to Concord and Clayton 3.Consistency with Existing Bond Covenants 4.Consistency with Proposition 218 5.Community Acceptance 6.Temporary Nature 7.Mitigation of Technical and Operational Impacts 8.Benefits to Central San Customers 9.Facilitate a Sustainable Solution to the Region’s Water Supply Shortage 14 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 43 of 71 Page 8 of 24 8 3. CENTRAL SAN’S BOARD RECYCLED WATER INITIATIVES 15 CONCORD NAVAL WEAPONS STATION REDEVELOPMENT 2.1 MGD BY 2035 TO 6.3 MGD AT BUILDOUT 2040+ • Will serve letter to provide recycled water to the new development • Development to be located both within City of Concord and Central San services areas • Central San to produce the recycled water and wholesale it to CCWD • CCWD responsible for sale and distribution of recycled water Project Status: On Hold  pending selection of a new  master developer by City  of Concord 16 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 44 of 71 Page 9 of 24 9 RECYCLED WATER WHOLESALE OPPORTUNITIES STUDY •The study’s objective was to understand the water market and demand for Central San’s potential supply of recycled water. •In 2015, the REEP Committee provided the following guidance on the study: •Favor projects with year-round recycled water demand. •Favor a small number of large projects over many small projects. •The following slides are excerpts from a presentation provided to the Board in February 2016. RMC Water and Environment (now Woodard and Curran) was hired by Central San to complete the study. 17 Overview Map of Potential Opportunities LEGEND CCCSD WWTP EBMUD Aqueduct CCWD Canal DSRSD Facilities CVP/SWP  Facilities Los Vaqueros  Reservoir San Pablo  Reservoir Briones  Reservoir Upper San Leandro  Reservoir 18 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 45 of 71 Page 10 of 24 10 Market Assessment Recycled Water (ReW) Indirect Potable (IPR) Direct Potable (DPR) •CCWD Canal •Local Golf Courses •Local refineries •Export to Ag – Delta Mendota  Canal (DMC) •Export to DERWA •Export to Delta  Diablo •EBMUD Mokelumne Aqueduct #1 or #2 •EBMUD San Pablo  Reservoir •EBMUD Briones Res. •EBMUD Upper San  Leandro Res •Lafayette Reservoir •Los Vaqueros Reservoir •CCWD Clayton  groundwater recharge •DSRSD groundwater  recharge •EBMUD Mokelumne Aqueduct #1, 2, or 3 •CCWD Mallard Reservoir  Bollman WTP Wastewater •Send San Ramon  Pump Station to  DSRSD Alternatives  to be  investigated  Further 19 Alt #1 – Recycled Water to Refineries Suisun Bay Martinez Concord Benicia 1 mile •Utilizes existing infrastructure •20 mgd demand Shell Refinery Tesoro Refinery 20 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 46 of 71 Page 11 of 24 11 Alt #2 – Recycled Water to DMC •Approximately 40 miles to  CVP pump facility •Could potentially utilize all  CCCSD’s effluent 21 Alt #3 – Augment Regional Water Supplies •Bay Area Regional  Reliability Partners (BARR) CCWD EBMUD San Francisco PUC Alameda Co. WD Santa Clara Valley WD Zone 7 Marin Municipal WD Bay Area Water Suppliers  & Conservation Agencies  (BAWSCA) •DSRSD 22 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 47 of 71 Page 12 of 24 12 Recommended Next Steps from Wholesale Opportunities Study •Initiate Discussions to Continue Evaluation Refinery RW exchange with CCWD for raw water IPR/DPR augmentation through EBMUD San Luis Delta Mendota Water Authority & Reclamation (Agriculture) Regional Reliability Partners •IPR/DPR as a local reliable supply alternative CCWD •Would serve as a critical partner in all alternatives through exchanges 23 Transfer‐Bethany Pipeline (proposed) REFINERY RECYCLED WATER EXCHANGE PROJECT CONCEPT Martinez Refineries Contra Costa  Water District  (CCWD) South Bay  Aqueduct Los Vaqueros Reservoir (Santa Clara  Valley Water  District) 24 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 48 of 71 Page 13 of 24 13 MEMORANDUM OF UNDERSTANDING (MOU) •On April 30, 2018, a three-way MOU was executed between Central San, CCWD, and Valley Water to conduct a Preliminary Feasibility Evaluation of the Refinery Recycled Water Exchange Project. •On July 3, 2019, Amendment 1 was executed, extending the termination date to June 30, 2020. •On June 22, 2020, Amendment 2 was executed, extending the termination date to June 30, 2021. •The three partner agencies are currently working to extend the termination date to June 30, 2022. 25 WORK PLAN DEVELOPED JUNE 2018 •Central San, CCWD, and Valley Water staff collaborated to develop a Work Plan called for in the MOU •Tasks included: A.Review and update costs Central San previously developed to provide recycled water for refinery use B.Review refinery water quality requirements C.Evaluate/estimate the project’s yield D.Develop updated cost estimates E.Allocate costs, based on beneficiary pays F.Final report 26 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 49 of 71 Page 14 of 24 14 WATER EXCHANGE PROJECT –NEXT STEPS •Extend the termination date of the current MOU to June 30, 2022 •Presentation to Valley Water’s Recycled Water Committee on July 28, 2021 •Finalize the cost allocation •Complete the Preliminary Feasibility Evaluation Report •Meet with the US Bureau of Reclamation? •Determine if the project will proceed to a more-detailed Feasibility-level Evaluation SATELLITE WATER RECYCLING FACILITIES (SWRFS) •Diablo Country Club (DCC) •MOUs executed in 2012 and 2015 •Requesting Demonstration Project •Moraga Country Club •MOU executed in 2016 •Rossmoor •Recent request for an MOU •Others? (~Ten other golf courses in Central San’s service area) 28 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 50 of 71 Page 15 of 24 15 4. CONSTRAINTS ASSOCIATED WITH RECYCLED WATER 29 CONSTRAINTS ASSOCIATED WITH RECYCLED WATER A.Water Service Duplication Laws B.Cost and Cost Recovery C.Preference for Large Recycled Water Users D.Seasonal vs. Year-round Recycled Water Demand E.Finite Volume of Wastewater in Dry Months 30 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 51 of 71 Page 16 of 24 16 A. WATER SERVICE DUPLICATION LAWS The water agencies within Central San’s Service Area have purveying rights over the distribution of water: • East Bay Municipal Utility District (EBMUD) • Contra Costa Water District (CCWD) • City of Martinez • Dublin San Ramon Services District (DSRSD) 31 EXAMPLE WITH EBMUD – LAMORINDA PROJECT In 1994, Central San purchased an abandoned Shell fuel pipeline to distribute recycled water to the Lamorinda area for landscape irrigation. Status: Project halted by EBMUD due to opposition during the public environmental review process. 32 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 52 of 71 Page 17 of 24 17 EXAMPLE WITH CCWD – ZONE 1 •1996 Agreement with CCWD •14 miles of purple pipelines •~50 metered customer connections •Primarily landscape irrigation •Truck Fill Program •Residential Fill Station Status: Central San owns and operates Zone 1  33 B. COST AND COST RECOVERY •Production and distribution of recycled water is expensive. •Advanced tertiary treatment facilities are required. •Distributing recycled water to homes and parks requires underground piping. •New recycled water regulations are very stringent on monitoring requirements. •Beneficiary pays. •Central San’s Board has requested that future recycled water projects be cost-neutral to ratepayers. “Wastewater is the last new water supply in California.” 34 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 53 of 71 Page 18 of 24 18 C. PREFERENCE FOR LARGE RECYCLED WATER USERS •Central San’s Board previously indicated a preference for projects with large recycled water demands over projects with small recycled water demands. 35 D. SEASONAL VS. YEAR-ROUND RECYCLED WATER DEMAND •Projects with year-round demand maximize Central San’s potential opportunity to supply recycled water. •California Senator Hertzberg has attempted several pieces of legislation to ban wastewater discharges to the ocean/bays. •Zero discharge is very challenging because supply and demand are inverted. •There is no feasible means to store on-site (EBMUD or CCWD reservoirs would require a higher level (potable reuse) of treatment). •Central San’s Board has favored projects with year-round over seasonal recycled water demand (limited to dry season capacity). 36 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 54 of 71 Page 19 of 24 19 E. FINITE VOLUME OF WASTEWATER IN DRY MONTHS •Seasonal recycled water demand is highest when influent wastewater flows are at their lowest. •Commitment to recycled water projects is governed by dry-season capacity. •Other factors may further reduce dry-season wastewater supply in the future. •Governor can issue orders for water conservation during droughts. •Senate Bill 606 (Hertzberg) and Assembly Bill 1168 (Friedman) require reduction in indoor water consumption. •Current proposal by Department of Water Resources is 47 gallons per person per day (gpcd) by 2025 and 42 gpcd by 2030. •Use of home gray water recycling is increasing. Central San’s Board has favored projects with year- round demand over seasonal use of recycled water, limited to dry-season capacity. 37 5. SUMMARY OF CURRENT COMMITMENTS 38 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 55 of 71 Page 20 of 24 20 CURRENT COMMITMENTS •Plant Utility Water •Zone 1 •DERWA Diversion (Temporary) •Concord Community Reuse Project (Naval Weapons Station Redevelopment) – Will Serve Letter MOUs: •Refinery Recycled Water Exchange Project •Diablo Country Club SWRF •Moraga Country Club SWRF 39 6. POLICY QUESTIONS 40 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 56 of 71 Page 21 of 24 21 POLICY QUESTION #1 •Should staff continue in accordance with the previous Board direction given regarding the commitment to serve the Concord Naval Weapons Station Redevelopment? •This includes: •An additional Filter Plant infrastructure project (Phase 2 project to be financed by the others); •Central San is the producer and wholesaler. CCWD is the distributor and retailer; and •Committing approximately 2 MGD of dry-season recycled water supply to the first phase of the development by 2035 and up to 6.3 MGD of dry-season recycled water supply for the ultimate build-out of the development in 2040+. 41 POLICY QUESTION #2 •Should staff continue in accordance with the previous Board direction given regarding continuation of the Refinery Recycled Water Exchange project? •This project has an MOU until June 30, 2022, which includes: •Finalizing the cost allocation •Completing the Preliminary Feasibility Evaluation Report 42 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 57 of 71 Page 22 of 24 22 POLICY QUESTION #3 •Should staff continue in accordance with the previous Board direction given regarding the MOU for the Diablo Country Club SWRF? A. Does the Board want to continue the MOU for the Diablo Country Club Golf Course for a cost-neutral SWRF Project? B. Does the Board want to consider granting “Demonstration Project” status to Diablo Country Club SWRF Project? •Starting with a single demonstration project would allow Central San to gauge impacts from this approach of diverting wastewater from the collection system and returning the process solids (waste activated sludge) before committing to additional SWRF Projects. 43 POLICY QUESTION #4 •Should staff continue in accordance with the previous Board direction given regarding MOUs on Satellite Water Recycling Facilities for other golf courses? •Does the Board want to continue the MOU for the Moraga Country Club Golf Course? (Currently on hold – no communication since 2018.) 44 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 58 of 71 Page 23 of 24 23 POLICY QUESTION #5 •Should staff discuss or entertain new MOU requests for SWRFs for other golf courses? •Staff recently received a request from Rossmoor/Golden Rain Foundation to execute an MOU for a cost-neutral SWRF Project. •Other golf courses may express interest in similar MOUs. 45 7. QUESTIONS/DISCUSSION/DIRECTION 46 July 20, 2021 Special REEP Committee Meeting Agenda Packet - Page 59 of 71 Page 24 of 24