Residential Backflow Program Update. Planning Committee June 12, 2018

Transcription

1 Residential Backflow Program Update Planning Committee June 12, 2018

2 Overview Background Review of County Records District Regulations Customer Survey Next Steps 2

3 Background Cross-connection incident in Alamo in February ,000 well records in Alameda and Contra Costa counties Regulations require backflow devices between potable water supplies and residences with wells 3

4 Types of Backflow Devices 3,834 double-check valves 230 reduced pressure devices Reduced Pressure Device Double-Check Valve 4

5 County Well Record Review Over 20,000 records not previously identified Electronic files and handwritten ledgers Duplicates and inconsistencies with District data 5

6 County Well Record Review Review reduced the number of potential records from 20,000 to 4,408 No unusual water quality complaints at these locations City Count City Count City Count Alameda 142 Emeryville 90 Pinole 24 Alamo 376 Hayward 136 Pleasant Hill 29 Albany 16 Hercules 10 Richmond 200 Berkeley 42 Kensington 3 Rodeo 13 Castro Valley 84 Lafayette 188 San Leandro 664 Crockett 4 Moraga 39 San Lorenzo 323 Danville 336 Oakland 1000 San Pablo 150 Diablo 13 Orinda 80 San Ramon 87 El Cerrito 26 Piedmont 15 Walnut Creek 291 El Sobrante 27 6

7 District Regulations Section 26 & Schedule C For single-family residential customers, District pays for installation, testing and maintenance of DC device If customer does not allow the District to inspect their property or fails to correct potential cross-connections RP device required Customer pays for installation, inspection, and maintenance 7

8 Single Family Residential Backflow Program Costs $61,000 per year to test backflow devices The District is the only local agency to cover the costs for backflow protection 8

9 Fiscal Impact 4,408 residential backflow devices 5.8 million for the backflow devices $66,000 increase in annual testing costs Costs are not included in the FY18/19 budget 9

10 Customer Survey Card East Bay Municipal Utility District Customer: The District is updating its residential well data records. County records indicate that there is a well on your property. Please check the appropriate box below and please return this pre-paid card. Is there a well on your property? Yes No Unsure Thank you for your cooperation. For questions or concerns please call If customer responds: Yes - Schedule an inspection Immediately No -Notify county and verify well abandonment Unsure - Add to survey schedule 10

11 Next Steps Send customer survey to 4,408 accounts Develop a plan and budget Make recommendations to changes to Section 26 and Schedule C 11

12 Microplastics in Wastewater Planning Committee June 12, 2018

13 Agenda Understanding microplastics as a pollutant Sources and pathways to SF Bay Wastewater treatment plant nexus SF Bay baseline study Pollution prevention: education and regulations District activities related to microplastics 2

14 Plastic pollution 3

15 What is microplastic? Plastic to microplastic Definition by size <5mm Unique characteristics of microplastics as a pollutant: PE, PP, PS, PVC Fragments, fibers, films, foam, pellets, microbeads Must be solid 4

16 Sources to the SF Bay Urban trash Abandoned vessels Industrial use Spills Domestic use Synthetic clothes and fabrics Microbeads in personal care products Packaging material, plastic forks, etc. 5

17 Microplastics pathways to the SF Bay Pathways to the Bay Storm water 2-15% of trash is plastic Water ways Aerial deposition (contested) Incinerators Ocean influence Wastewater discharges 6

18 Wastewater Treatment & Microplastics Wastewater treatment process removes 98-99% of microplastics from final effluent* Most removal with scum and biosolids Tertiary treatment is not the answer *Carr, Liu, and Tesoro, 2016, Transport and fate of microplastic particles in WWTP *Murphy, Ewins, Carbonnier, and Quinn, 2016, WW as a Source of Microplastics in Aquatic Environment 7

19 Health impacts Effect on aquatic organisms Physical Toxicity of leaching chemicals Hydrophobic pollutants selectively sorbed Acts as a vector for pollutants Potential for bioaccumulation Lack of environmentally relevant experimental data 8

20 State of microplastics science Number of published works expanding More than150 papers published in 2017* Lack of accepted definition for microplastic and standardized methods make comparison difficult Science in early stages leading to published data sometimes being retracted Highly time-consuming work; for wastewater hours per samples *Water Environment and Reuse Foundation, white paper,

21 Microplastics in SF Bay and Adjacent Marine Sanctuaries SFEI & 5 Gyres Institute lead the project Regional Monitoring Program grant (RMP) $75,000; District participation through BACWA Funding provided by Gordon and Betty Moore foundation $880,000 Baseline study of SF Bay water, ocean water, sediments, fish, storm water and wastewater Method development District staff participates in Technical Review Committee District provided wastewater effluent samples District expertise for method development in wastewater matrix and data quality 10

22 California Ocean Litter Prevention Strategy California Ocean Protection Council (OPC) developed final draft strategy in April 2018 BACWA, CASA and other professional organizations actively participated Three goals, one of which is to increase the understanding of the scale and impact of microplastics on marine environment Supporting Agencies: SWRCB, CalRecycle, DTSC, California Coastal Commission 11

23 Pollution prevention Reduce the production and use of macro plastics Storm water controls Single use plastic bag ban Styrofoam ban/take back Fibers from clothing: research, removal Alternatives to single use products: water bottles, straws, cups, plates, pens, etc. Biodegradable material (rice bran, soy protein) to make utensils Better trash collection 12

24 Microplastic bead ban Federal: Microbeads-Free Waters Act of 2015 Manufacturing ban started July 1, 2017 Sales ban starts July 1, 2018 Non-prescription drugs - one year lag California: AB 888: Plastic microbeads nuisance prevention law Effective January 1,

25 District Efforts Pollution prevention efforts: Wipes Clog Pipes campaign Sample contribution to RMP studies $5,000 grant to SFEI to develop educational material EPA advisory panel Method development for wastewater matrix and data quality 14

26 Near future SFEI/5 Gyres Institute study report will be available in September 2018 Apparel manufacturer Patagonia is pursuing ways to reduce microfiber pollution OPC will finalize California Ocean Litter Prevention Strategy District will continue to work through RMP, CASA, SFEI/Aquatic Science Center toward understanding the science of microplastics Support pollution prevention campaigns through CASA and BACWA 15

27 Questions? 16

28 North Interceptor Relief Sewer (Pump Station Q Force Main) Project Update Planning Committee June 12, 2018

29 Presentation Overview Project Scope Project Overview Project Coordination Issues/Berkeley Next Steps 2

30 Project Goal Reduce use of Point Isabel Wet Weather Facility during moderate wet weather events Provide additional flow capacity through Berkeley parallel to the North Interceptor Hydraulic modeling indicates reduction of discharge frequency by 50 percent and discharge volume by 68 percent Project is required to be completed under the Consent Decree by September

31 Project Scope (1 of 2) Buchanan Street Intertie Structure Connects North Interceptor and Pump Station Q Force Main Page Street Intertie Structure Connects existing Pump Station Q Force Main and new Eastshore Highway Interceptor Eastshore Highway Interceptor 1,950 ft of 36-in dia. PVC from Page Street to Virginia Street 4

32 Project Scope (2 of 2) Virginia Street Relief Structure Relieve existing North Interceptor bottleneck Existing Berkeley storm drain/ebmud interceptor are structurally integrated Existing Virginia Street Transition Structure 5

33 Project Overview Project Elements and Construction Timing May 2018 April 2019 Buchanan Street and Page Street Intertie Structures ( ) Eastshore Highway Interceptor April 2019 September 2019 Virginia Street Relief Structure ( ) Page Street Virginia Street Gilman Street Pump Station Q (Existing) Virginia Street Relief Structure (Berkeley) North Interceptor (Existing) Second Street Buchanan Street Intertie (Albany) Pump Station Q Force Main (Existing) Page Street Intertie (Berkeley) Eastshore Interceptor (Berkeley)

34 City of Berkeley Outreach and Collaboration Pathways Transitional Housing Facility Provide transitional housing to 50 persons Facility occupies Second Street from Cedar Street to Virginia Street Facility opens June 26, 2018 Significant homeless tent encampments throughout area 7

35 Virginia Street Relief Structure 8-inch EBMUD (to be relocated) 4-inch PG&E City of Berkeley Storm Drain Virginia Street Transition Structure Eastshore Interceptor Virginia Street Relief Structure 8

36 Protection of City of Berkeley Storm Drain Construction in dry season only (April 15 September 30) Installation of bulkhead and dry weather diversion Structural modeling of Integrated Storm Drain/Interceptor Open excavation beneath storm drain limited to 6-ft and 5-day duration Deflection monitoring Post-construction lining of storm drain North Interceptor Emergency Bypass Plan Investigating structural lining of North Interceptor and/or storm drain 9

37 Project Schedule Milestone Buchanan, Page and Eastshore (3 sites) Virginia Street Relief Structure (1 site) Award February 2018 August 2018 Mobilization May 2018 April 2019 Construction Complete April 2019 October

38 Next Steps Continue collaboration with the City of Berkeley Award Virginia Street Relief Structure project in August Complete the North Interceptor Relief Sewer by Consent Decree deadline 11

39 Thank You! 12

40 Renewal of Routine Maintenance Agreements Planning Committee June 12, 2018

41 Presentation Outline Scope and purpose of Routine Maintenance Agreements (RMAs) Renewal process and timeline Next Steps

42 Scope and Purpose of RMAs Streamline CA Department of Fish & Wildlife(CDFW) permitting by pre-approving certain maintenance activities. Coverage for routine debris and sediment removal, vegetation control, minor fill and riprap placement, and culvert replacement. No coverage for construction, project work, or work outside of prescribed seasons. Renewed every 5 years. CDFW now requires greater CEQA review. Without a RMA, EBMUD could face civil penalties and other regulatory actions.

43 Three Existing District RMAs

44 Renewal Schedule Maintenance Region CDFW Region Required Board CEQA Adoption RMA Expiration Date Mokelumne Aqueducts - East 2 November 28, 2018 March 14, 2019 Mokelumne Aqueducts - West 3 September 10, 2019 Dec. 31, 2019 Mokelumne Watershed Area 2 January 14, 2020 April 22, 2020 Expiration dates differ but environmental work may need to be concurrent. Environmental review for Watershed RMA will be completed early to support other permitting efforts.

45 Next Steps Complete consultant contract for CEQA support (calendared for June 26 Board meeting). Staff (WNR) to begin biological work, including site surveys, document review, help developing BMPs, and agency meetings. Staff (RCO) to begin drafting permit application. Future renewals to be completed with District forces.

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