Loading...
HomeMy WebLinkAboutItem 1 PPP 09-18-19 Special Board Meeting - Strategic PlanStrategic Plan Development Tonight's Policy Discussions: •Constituents of Emerging Concern •Environmental Water Quality, Stormwater Management and Urban Runoff •Water Reuse •Biosolids Management •Food Waste Treatment Constituents/ Contaminants of Emerging Concern Policy Book page: 9 Presented by Roya Sohanaki Engineering Manager Policy Question Should OCSD take a lead role on Constituents of Emerging Concern in wastewater and develop detection and characterization methods in wastewater treatment? What are CECs? CECs or Contaminants of Emerging Concern (also called Constituents of Emerging Concern) Pollutants that may or may not be subject to regulatory requirements or statues, yet pose a risk to public health and/or the environment Federal & State Requirements Federal •Clean Water and Air Acts •Federal Pretreatment Regulations •Federal Biosolids Regulation •Other Federal Legislation and Regs Local •Approved Pretreatment Program •Wastewater Discharge Regulations (Pretreatment Ordinance approved by Board) •Enforcement Response Plan •Permits & Enforcement Actions State •State Legislation and Regulations •NPDES Permit (with USEPA) •Recycled Water Regulations •Ocean Plan •Air Quality Regulations CEC Study Requirements: Hormones (8) Industrial Endocrine Disrupting Compounds (7) Pharmaceuticals and Personal Care Products (13) Flame Retardants (9) Partnering with Others OCSD’s Laboratory Partnering with OCWD Levels of Service •1,4-dioxane: 10 µg/L •NDMA: 0.15 µg/L •Perchlorate: 15 µg/L OCSD/OCWDResponse Plan 12 Trunkline Sampling Locations 7 at Plant 1 5 at Plant 2 Monitoring CECs Potential sources of CECs Controlling CECs Residential Example: Safer Consumer Products •Public Outreach •Local, State, & Federal Legislation Commercial Example: Dry Cleaners use of Perchloroethylene •Public Outreach •Local, State, & Federal Legislation Industrial •OCSD’s Pretreatment Program •Permitting & Enforcement Controlling CECs •CECs are not new to OCSD •This framework has been implemented over decades Some Examples CECs Timeline Polychlorinated biphenyls (PCBs)1970s-1980s Dimethyldithiocarbamate (DTC) & N-Nitrosodimethylamine (NDMA)1990s-2000s 1,4-dioxane 2000s-2010s per-and poly-fluoroalkyl substances (PFAS)2010s- PFAS (per-and poly- fluoroalkyl substances) At a molecular level, the strong carbon (C) and fluoride (F)bonds on PFOA and PFOS substances do not break down easily and can stay in the environment PFAS Biomonitoring * geometric mean (CDC 2017) PFAS (per-and poly-fluoroalkyl substances) Source: Australian Department of Defense PFAS in Aqueous Film Forming Foams (AFFF) has entered watersheds when used at airports and military bases Gathering Data •OCSD expects to acquire data on PFAS concentrations in influent and effluent •Where do we look and how do we look for it? PFAS Industrial Survey •Canvasing Industries •Focus on locations with a higher probability of PFAS presence •Visit each facility and review processes, chemicals, and Safety Data Sheets (SDS) OCSD’s Plan •Monitoring method development & providing input •Monitor regulations, legislation, and media •Align resources/coordinate with OCWD & other agencies •Attending and participating in workshops Learn and Collaborate Plan and Prepare •Educate and engage regulators & legislators •Inform stakeholders on current requirements & future issues •Work with Board to establish policies, limits, and standards •Find & inspect potential CEC sources •Sample and analyze using approved method •Evaluate & compile data •Implement Board Policy & federal/state regulations (OCSD Pretreatment Program) Investigate and Act Policy Question Should OCSD take a lead role on Constituents of Emerging Concern in wastewater and develop detection and characterization methods in wastewater treatment? Initiatives to Support Policy Initiative: OCSD will continue to actively engage water and wastewater stakeholders on CECs to stay abreast of the scientific progress and provide timely briefings to OCSD’s management and the Board to facilitate informed decision making. Initiative: OCSD will continue to develop capacity to detect, quantify, and characterize CECs throughout the service area and treatment process to promote treatment effectiveness and the communication of credible risks. Questions? Environmental Water Quality, Stormwater Management and Urban Runoff Policy Book Page: 17 Presented by Lan Wiborg Director of Environmental Services Policy Question Should OCSD explore accepting controlled discharge of stormwater? Sanitary Sewer vs. MS4 Dry Weather Diversionsto OCSD OCSD •Treatment capacity •Cost containment •Asset protection •Regulatory compliance •Potable reuse/GWRS Source Control Program •Pollutant / Water quality management •Support capacity management Wastewater •Domestic •Industrial permittees •Non-industrial permittees •Dry weather runoff diversion agreements OCSD Urban Runoff Resolution •Address public health and/or environmental problems associated with certain pollutants •Limited system capacity (10 MGD total) •Waive fees and charges for authorized discharges •Prohibit wet weather urban runoff diversion to sewer OCSD Dry Weather Urban Runoff Diversion Program •Address beach closure due to bacteria •Selenium in upper Newport Bay Dry Weather UrbanRunoff Diversion Gate left open = uncontrolled discharge to sewer Pump must be activated = controlled discharge to sewer Stormwater Sewer Stormwater Sewer Acceptance Criteria •Sewer capacity (10 MGD total) •Must be pumped to prevent uncontrolled release •OCSD reserves right to reject flow Controlled Discharge to OCSD Current Status City of Huntington Beach City of Newport Beach County of Orange Public Works Irvine Ranch Water District LLC within the Pelican Point community OCSD maintains 21 active Dry Weather Urban Runoff Permits for diversions owned by: Last year OCSD received an average of 1.03 MGD from these facilities Well below the current 10 MGD policy cap and 9 MGD action threshold Since 2000, the program has treated 9.4 billion gallons of urban runoff Diversion Locations Discharge to Plant No. 1 Achievements Some OCSD-service area beaches made the report card ‘honor roll’ with a rating of 92%of beaches in Orange County received an ‘A’ rating during summer dry weather conditions A+ Area of Special Biological Significance Program at a Glance ~0.92 Million Gallons Per Day 9.8 Billion Gallons in… 19 Years Current Status OCSD •Treatment capacity •Cost containment •Asset protection •Regulatory compliance •Potable reuse/GWRS Source Control Program •Pollutant / Water quality management •Capacity management Wastewater •Domestic •Industrial permittees •Non-industrial permittees •Dry weather runoff diversion agreements Stormwater Infiltration/Inflow •Volume •Pollutants •Sand/Silt Wet Weather Runoff •Volume •Pollutants •Sand/Silt Policy Question Should OCSD explore accepting controlled discharge of stormwater? Average Monthly Flow vs. Peak High Flow Multi-benefit Model OCSD •Treatment capacity •Cost containment •Asset protection •Regulatory compliance •Potable reuse/GWRS Source Control Program •Pollutant / Water quality management •Capacity management Wastewater •Domestic •Industrial permittees •Non-industrial permittees •Dry weather runoff diversion agreements Stormwater Infiltration/Inflow •Volume •Pollutants/sand/silt Wet Weather Runoff •Volume •Pollutants •Sand/silt Treatment Storage Stormwater Reuse (no discharge to WRRF) •Site-specific •Flexible design •Cost containment •Community value •Habitat value Proposed Policy Partnership with Member Agencies No Charge $ for Member Agencies Improve Beach and Ocean Water Quality Protect OCSD Workers, Reuse, Sewers, Plants and Compliance Prevent Overflows During Storm Events Accept up to 10 MGD Dry Weather Runoff Initiatives to Support the Policy Initiative: Continue Urban Runoff Program under Resolution 13-09 Accept up to 10 MGD of pumped dry weather urban runoff from local agencies …where there is existing capacity and conveyance infrastructure …and constituents will not adversely affect OCSD Initiative: Continue working with local agencies to …determine feasibility of regional wet weather runoff capture, storage, and reuse …offer alternatives for runoff disposal through permits or written authorization …promote responsible stormwater utilization and sewer protection …ensure stormwater is held for evaluation prior to controlled discharge to sewer Initiatives to Support the Policy Water Reuse Book Page: 23 Presented by Kathy Millea Director of Engineering Policy Question Should OCSD study the feasibility of tapping non-wastewater sources for the purpose of generating more water recycling beyond the final expansion of GWRS? 2013 Strategic Plan On November 20, 2013, the Board approved the Five-year Strategic Plan which included the strategic goal for “Future Water Recycling”. Water Factory 21 Project (1970s)Green Acres Project (1991) Ground Water Replenishment System (2008/2015/2023) OCSD/OCWD30-Year Partnership •Seawater intrusion barrier •2008 –70 MGD potable water 2015 –100 MGD potable water 2023 –130 MGD potable water •Non-potable water for landscape irrigation (purple pipe) OCSD OCWD OCSD and OCWD Joint Campus OCSD Lease to OCWD Both agencies serve roughly the same service area (~2.5 million residents) OCSD and OCWDService Areas OCWD Service Area OCSD Service Area Orange County Boundary Largest water purification program of its kind in the world –100 MGD Takes treated sewer water that otherwise would be discharged to the ocean and purifies it to near-distilled quality Provides a new 100,000 acre-feet per year source of water, which is enough water for 850,000 people ½ the energy to pump imported water and 1/3 the energy to desalinate ocean water What Is the Groundwater Replenishment System (GWRS)? GWRS is a joint project with joint governance GWRS Steering Committee 3 Members Yoh, Green, Sarmiento + 3 Alternates Ta, Nguyen, Sheldon 3 Members Shawver, Ferryman, Shaw + 3 Alternates Silva, Hawkins, Peterson EffluentInfluent Preliminary Treatment Primary Treatment Secondary Treatment OCSD Wastewater Treatment Source Control OCWD -Advanced Water Treatment You Are Here Ultraviolet Light (UV) Reverse Osmosis (RO) Microfiltration (MF) Irvine Huntington Beach Ocean Outfall GWRS Anaheim SpreadingFacilities Santa Ana River N Pacific Ocean Santiago Creek OCSDTreatmentPlants SeawaterIntrusion Barrier OCWD -Distribution System GWRS Groundwater Basin Influent GWRS Program has many parts GWRS Program has many parts GWRS Program has many parts GWRS Program has many parts GWRS Production Capacity GWRS 2008 70 MGD Initial Expansion 2015 Final Expansion 2023 30 MGD 30 MGD 130 MGD 2013 Strategic Plan On November 20, 2013, the Board approved the Five-year Strategic Plan which included the strategic goal for “Future Water Recycling”. GWRS Final Expansion Projects OCSD Design/Construct/Operate (OCWD Fund) •P2-122 Headworks Modifications at Plant No. 2 •J-117 Plant No. 2 Plant Water Pump Station Relocation OCWD •New Flow Equalization Tanks at Plant No. 2 •New Effluent Pump Station at Plant No. 2 •66-inch Pipeline Rehabilitation •Advanced Water Treatment Facility Expansion to 130 mgd Advance Water Treatment Expansion Pump Station to take flow to Plant 1 Existing 66-inch Pipeline to be Rehabilitated Plant Water Pump Station Flow Equalization Tanks Headworks Modifications Plant No. 1 Plant No. 2 GWRS Final Expansion Schedule GWRS Final Expansion Construction Completion2023 Available Flow for GWRS Final Expansion GWRS Final Expansion Production Goal: 134,000 acre-foot/year, or 11,167 acre-foot/month (AF/month) OCSD Total Influent 185 mgd (Non-reclaimable flows)-34 mgd + Microfiltration Backwash +21 mgd Total influent to GWRS 172 mgd Total Product water 128 mgd Total Water Produced in Month 11,855 AF OCSD Contributions to GWRS Water ≈10 Acres Leased for $10 Land 292,000,000,000 Gallons Since 2008 at no charge OCSD Contributions to GWRS Additional & Improved Treatment •GWRS Microfiltration Backwash Water Treatment •GWRS Reject Brine Disposal •Additional Projects to support High Quality Water = GWRS 97% on-line factor •Plant No. 2 Low Flow Pump Station Flow Management •Diversions in the Collection System •Plant No. 1 Treats Higher Flows •Steve Anderson Lift Station •Continuous Operational Coordination with OCWD OCSD Direct Benefits •Reduced outfall flow = less pumping, less disinfection •No OCWD charge for first 1 MGD of non-potable water ($700k/year prior to 2009) •100 MGD emergency outfall flow capacity 100120140160180200220240260280300 19 9 4 19 9 5 19 9 6 19 9 7 19 9 8 19 9 9 20 0 0 20 0 1 20 0 2 20 0 3 20 0 4 20 0 5 20 0 6 20 0 7 20 0 8 20 0 9 20 1 0 20 1 1 20 1 2 20 1 3 20 1 4 20 1 5 Treated Wastewater to Ocean MGD Groundwater Replenishment System (GWRS) in operation since 2008 Wastewater Recycled Beyond GWRS •Potential to create additional water for recycling •Potential to reduce problematic shallow aquifers for member agencies •OCSD may lack legal authority •Understanding County’s need and other efforts •Investment need for infrastructure •Limited land availability based on 2017 Facility Master Plan Policy Question Should OCSD study the feasibility of tapping non-wastewater sources for the purpose of generating more water recycling beyond the final expansion of GWRS? Current Policy Statement The Sanitation District will seek to recycle 100% of all reclaimable wastewater flows. Initiatives to Support Policy Initiative: Support the completion of the final phase of the Groundwater Replenishment System and maximize water availability to the Orange County Water District. Initiative: Support Green Acres project water production to provide reclaimed water for industrial and irrigation uses. Questions? Biosolids Management Book Page: 5 Presented by Tom Meregillano Senior Regulatory Specialist Policy Question Should OCSD Explore Alternative Uses for Biosolids? Background Background SolidsTreatment Dewatering Centrifuge Land Application,& Compost Biogas to Electricity Generation Temperature Time Pathogens Organic Matter Metals (Source Control) Class B Biosolids OCSD (95F) Biosolids Class A Biosolids Others (131F) •22 Trucks Per Day = 550 Wet tons of Biosolids Per Day •Biosolids Management Budget 2019-2020: $13.4 Million •Start-up of Centrifuge Biosolids Management Savings: Approximately $200,000- $400,000/month (Reduction of Volume) How Much Biosolids? Biosolids Program Framework (Resiliency and Sustainability) OCSD 13-03 Biosolids Policy and 2017 Biosolids Master Plan – Management Roadmap Beneficial Reuse Diversification 100% Fail Safe Management Capacity Balance Financial, Environmental, and Societal ConsiderationsSource: https://tyboyd.com/ California Arizona Diversification –Biosolids Distribution –550 Wet Tons/Day Plant No. 1 and Plant No. 2 Kern San Bernardino Yuma 17% Compost Liberty Compost Kern 5% Compost IERCA 39% Compost Nursery Product 39% Land Application Tule Ranch Current Situation –Organic Waste Market Drivers Sept 14 CalRecycle AB 1826 (2014) CARBCARB/CEC SB 1383 (2016) SB 32 (2016)“Organics Market” Biosolids, Food Waste, Green Waste, etc. SB 100 (2018) Healthy Soils Initiative Statewide Organics Diversion (SB 1383) 75% 2025 (5.7 Million Tons) 50% 2020 (11.5 Million Tons) Baseline (22.9 Million Tons) Projected Organics in Disposal (If Status Quo) Maximum Allowable Tons of Organics Disposal to Meet 2020 (50%) and 2025 (75%) Mandates Historical Organics Disposal Enforcement Date Future Policy –Should OCSD Explore Alternative Uses for Biosolids? Class B Biosolids (95F) Emerging Markets (CA) RFI Fuel Electricity Biosolids Compost (CA,AZ) Horticulture and Gardening Agriculture Crops Biosolids Land Application (Arizona)Agriculture Future Policy -Opportunity to Partner with OC Waste & Recycling Olinda Landfill (Brea)Frank Bowerman (Irvine) Prima Deshecha (San Juan Capistrano) Aerial Rendering of New Digesters –Plant No.2 (2030) Class A Biosolids (131F) Future Policy -Biosolids Management (2030) Horticulture/Gardening Soil Blending Agriculture CropsLand Application- California Summary Policy Statement OCSD will continue to beneficially reuse biosolids and explore new markets identified in the 2017 Biosolids Master Plan. Initiatives to Support Policy Initiative: Educate and advocate for the used of biosolids as a soil amendment and monitor the development of constituents of emerging concerns that may impact biosolids. Initiative: Stay abreast of new technology options to convert organics to energy and other regional biosolids recycling and renewable energy partnerships. Initiative: Proceed with mesophilic and thermophilic biosolids facility at Plant No. 2 to enhance biosolids quality and marketability. Food WasteTreatment Book Page: 13 Presented by Rob ThompsonAssistant General Manager and Director of Operations and Maintenance Policy Questions How should OCSD structure the tipping fee for digestion of food waste? Should OCSD conduct a feasibility study for digestion of green waste? Why Accept Food Waste •Regulation diverting organics from landfills •Food waste slurry is compatible with existing systems •Existing capacity in digesters, gas treatment, engine-generators, dewatering and truck loading. •Operating for the benefit of the residents within our mission and legal authority Health and Safety Code 4700. OCSD Central Generation System Challenges Ahead •Steep learning curve to food waste. •Lessons learned in Los Angeles County and East Bay MUD. •Interim Project to learn (10 years) •Permanent facility with new digesters at Plant No. 2 •Risk to existing 600 tons per day of biosolids (this should not be underestimated). •Contamination •Process upsets (2 million gallon stomachache) Interim Food Waste •Biosolids Master Plan Recommendation •Interim Facility •Space & Sequencing Constraints •15-year life specification •Pre-processed waste only •5 to 6 trucks per day •15% more digester gas produced (1MW) OCSD Central Generation System Located at Plant No. 2 Main Entrance Interim Food Waste Facility Project Basis Costs •$6.2 million project budget •$2.4 million construction cost •$1 million/year higher O&M costs Tipping Fee Basis •Tipping fee to recover •All operating cost •Capital cost over first five years of operations •No credit given for the value of digester gas •No way to accurately separate sludge versus food waste fraction. •Gas clean up is costly –offsets value. •Savings pass through to residents, not Haulers •Service area preference, premium for outside Tipping Fee Comparison Other Agency Review •Los Angeles County Sanitation District •Temporary Receiving $20/ton •Future Permanent Facility $25-40/ton •East Bay Municipal Utility District $45/ton •Central Marin Sanitation District $20/ton •Encina Wastewater Authority $14/ton Schedule Project Viability Update to Board Jun 2020 Construction Award Oct 2020 Construction Complete Jun 2022 Exploring Green Waste •Potential for additional methane •Potential municipal organics diversion •Current solids facilities not capable to handling cellulose based plant materials. •No room onsite with master planned facilities •Legal requirements •Health and Safety Code •Air Regulations (Volatile Organics, Odor and Greenhouse) •Gas Pipeline regulation •CEQA •Orange County Waste and Recycling Plans •Markets for residual materials Initiatives to Support Policy Initiative:The Sanitation District will accept a preprocessed food waste slurry from contracted waste haulers that will be fed to existing anaerobic digesters. OCSD will charge a tipping fee to offset its costs for capital construction, operations, handling, maintenance, and biosolids disposal. Initiative: Design, build, and operate a food waste receiving station. Create a specification for food waste slurry and contract with solid waste haulers to receive and process food waste. Policy Questions How should OCSD structure the tipping fee for digestion of food waste? Should OCSD conduct a feasibility study for digestion of green waste? Questions?