C. D. D. - San Bernardino Valley Municipal Water District
Transcription
C. D. D. - San Bernardino Valley Municipal Water District
all 5.4.:-· SERJ'.".R.DI:-.'.O Ml,;:--JICIPI T \\'ATER DIS'TR.JCT SAN BERNARDINO VALLEY MUNJCIPAL WATER DISTIUCT 380 E. Vanderbilt Way, San Bernardino, CA 92408 MEETING OF THE ADVISORY COMMISSION ON WATER POLICY NOTICE AND AGENDA 6:30 p.m. Thursday, June 11, 2015 CALL TO ORDER/FLAG SALUTE 1. PUBLIC COMMENT Any person may address the Commission on matters within its jurisdiction. 2. APPROVAL OF MINUTES A. 3. March 12, 2015, Advisory Conunission Meeting (Page 3) PRESENTATIONS A. City of Redlands B. Santa Ana River Conservation and Conjunctive Use Program (Page 9) C. 2015 Drought Update (Page 39) D. California WaterFix and State Water Project Allocation (Page 40) 4. ANNOUNCMENTS BY COMMISSIONERS 5. FUTURE BUSINESS A. B. C. D. Suggestions by Commissioners on Items for Policy Review Enhanced InfrastructUl'e Financing DistTicts Hydro-electric Projects Riverside Highland Water Company Presentation 1/5 3 Meeting of the Advisory Commission on Water Policy June 11, 2015 Page2 6. NEXT MEETING DATE A. 7. Confirm next regular meeting date of September 10, 2015 ADJOURNMENT Mission Statement "It shall be the function of the Commission to study and make recommendations to the Board on matters of water policy for the District. The Commission shall study such matters of water policy as are submitted to it by the Board for Consideration and may study such other matters of water policy as the Commission deems appropriate." SBVMWD Ordinance No. 61, July 6, 1987. 2/53 351 MINUTES OF REGULAR MEETING OF THE ADVISORY COMMISSION ON WATER POLICY SAN BERNARDINO VALLEY MUNICIPAL WATER DISTRICT March 12, 2015 Chairperson Corneille called the regular meeting of the Commissioners of the San Bernardino Valley Municipal Water District Advisory Commission on Water Policy to order at 6:30 p.m. Commissioners and Alternates Present: Darcy McNaboe, City of Grand Terrace John James, City of Redlands Nick Ferguson, City of Riverside Ronald Coats, East Valley Water District Frank LoGuidice, Fontana Union Water Company Karen McHugh, Riverside-Highland Water Company Denis Kidd, Riverside-Highland Water Company Richard Corneille, San Bernardino Valley Water Conservation District David Raley, San Bernardino Valley Water Conservation District Alan Dyer, West Valley Water District Benjamin Kelly, Western Heights Water Company San Bernardino Valley Directors and Staff Present: Steve Copelan, S.S. Valley Municipal Water District Ed Killgore, S.S. Valley Municipal Water District Gil Navarro, S.S. Valley Municipal Water District Susan Longville, S.S. Valley Municipal Water District Bob Tincher, S. B. Valley Municipal Water District Wen Huang, S. B. Valley Municipal Water District Lillian Hernandez, S. B. Valley Municipal Water District Agencies and Consultants Present: George Saunders, Riverside Highland Water Company Carol James John Mura, East Valley Water District Kelly Malloy, East Valley Water District Jean Cihigoyenetche, East Valley Water District Daniel Cozad, San Bernardino Valley Water Conservation District Chris Diggs, City of Redlands Cecelia Griego, City of Redlands Chairperson Corneille led the pledge of allegiance. Chairperson Corneille announced that there was a quorum so official business could take place. The meeting proceeded with the following agenda items. Agenda Item 1. Public Comment. Members of the public may address the Commission on matters within its jurisdiction. 3/53 352 Chairperson Corneille invited any person who so desired to address the Commission. Hearing none, the meeting proceeded with the published agenda items. Agenda Item 2. Approval of Minutes of the December 11, 2014, meeting. It was moved by Alan Dyer to approve the minutes of the December 11, 2014, meeting. It was seconded by Karen McHugh. The motion was unanimously adopted with Benjamin Kelly abstaining. Agenda Item 3. Presentations. A. East Valley Water District's Recycled Water Project. John Mura, General Manager East Valley Water District (EVWD), gave a presentation on their Recycled Water Project. Two years ago EVWD undertook the effort to update their water and sewer master plans. Unfortunately, that had not done that for 12 years. They are facing a development boom and did not know what their infrastructure needs were. They found out they had over $300 million of infrastructure needs that have been deferred that need to be taken care of over the next 20 years. About $100 million was on the water side and $200 million on the sewer side. They are currently a conveyance agency and through a service agreement with the City of San Bernardino Municipal Water Department (SBMWD), EVWD conveys all their wastewater flows to the City plant and the City provides treatment on EVWD's behalf. EVWD collects the fees for collection and treatment from their rate payers and submits the treatment based revenue to the City on a monthly basis. The results of that sewer master plan revealed that the capacity in some of their pipelines was almost completely utilized. Their current capacity usage is 26,530 EDU's and they have only 220 dwelling units left. They serve the entire City of Highland, a portion of the City of San Bernardino, and unincorporated pockets in the County of San Bernardino. Those land use entities have already approved over 6,000 new units in their service area that are intended to be built within 3 to 7 years. So they had a huge conflict in that they have no capacity, and a lot of new development scheduled. They had to consider how they were going to serve their customers today and into the future. Staff went to their Board to make policy decisions and they hired RMC to complete a feasibility analysis of their wastewater treatment needs. The feasibility study looked at how EVWD wanted to plan for the future and how were they going to spend their money and developers' money to better serve the community for the next 50 years. It came down to should they keep doing what they were currently doing, just being a conveyance agency, improve their conveyance system and upsize the pipes and continue to use San Bernardino as their sewer treatment provider, or should EVWD embark on constructing their own recycled water facility. If they embark on their own recycled water system they would have a new source of water supply, improved local control, and reduced capital improvement project pipeline costs in the future. They evaluated three options; (1) make system improvements and all flow continues to San Bernardino, (2) construct a new facility that could handle all the new demands and flows in their service area and continue to send some flows to San Bernardino, or (3) design a program that would capture the entire flows of their District, treat, and then recharge that water. 4/53 353 When they did the analysis, it became obvious to them they needed to construct a new facility. They found they could lower the cost for the development community as well. They considered various locations within their District and decided on the Del Rosa Avenue location because they would have more gravity flow. They then considered how much gravity flow they could use and what would they do with the water once it was treated. The answer was recharging the treated wastewater into the Bunker Hill Basin. The Del Rosa location put the water closer to the recharge basins in Redlands just east of Alabama or for a habitat restoration project, which would reduce their pipeline cost to get it to the basins. The Del Rosa property is just under 19 acres of land. The concept is to build the treatment facility on the east side of Del Rosa Avenue and use the west side to construct a learning center, active recharge ponds, and make it into a community resource for the local schools and colleges. They could have classrooms for environmental learning. In considering recycled water, they evaluated having dual pipes, selling it for commercial industrial use, and groundwater recharge. Based on the cost for infrastructure, it made most sense to sell it for commercial industrial use or for recharge. They are considering constructing a membrane bioreactor (MBR) plant which is the newest technology in wastewater treatment recycled water development. If designed correctly it is odorless, you can't hear it, and you can wrap it architecturally so people would not know what the business inside is. Mr. Mura and his Board toured a couple MBR plants in the State of Washington and a small one in Anaheim next to their City Hall. Mr. Mura pointed out that this project will help the Habitat Conservation Plan (HCP) as well. The flows initially will go to the City of Redlands recharge basins while the HCP is continuing to move forward with their approval process and as soon as it is approved, a portion of the flow out of the plant will then go into that HCP project where they are going to be constructing new habitat, both aquatic and riparian, and those flows will be used to support that new habitat as well as also recharged into the basin once that use is completed, so it provides multiple benefits. Mr. Mura pointed out the potential economic impact it could have on the local economy by providing jobs among other benefits. EVWD has been involved in a community outreach campaign. There have been public meetings, print ads, bill inserts, newspaper articles, website content, neighborhood meetings, and tours. They have completed their feasibility study and amended it changing the location from Sterling to Del Rosa. They also will partner in the HCP project and water will be made available for regional benefit. Their water recycling implementation team has been established. They have a project manager, an environmental firm, and legal counsel. They are working toward scoping the project as it is still at a concept level. The next step is go to the Local Agency Formation Commission (LAFCO) so they can ask for their latent authority to perform sewer treatment be activated under the Section 31000 of the Water Code. They have a special Board meeting on March 18th to submit a recommendation by way of a resolution from their Board to send to LAFCO which is the first step of the LAFCO process. LAFCO will take 6 to 8 months to process the application but in the interim they are moving forward to scope the project. Mr. Mura stated that each day that the project is delayed, 6 million gallons a day (mgd) of their rate payers flows is going to 5/53 354 waste and not beneficial use. The soonest the plant could be in operation is the 4th quarter of 2017. Cactus Basin Recharge Project. Wen Huang, Manager of Engineering, San Bernardino Valley Municipal Water District (SBVMWD) provided a PowerPoint presentation and brief background regarding SBVMWD's plan to facilitate recharge in the Cactus Basins There are three off-basin project components required to accommodate conveying water from the Devil Canyon Azusa Pipeline, in which SBVMWD owns capacity, to the Cactus Basins. These components include modifications to the existing Lytle Creek Turnout, a new hydroelectric power plant at WVWD's Roemer Water Treatment Plant, and a new pipeline connecting to the City of Rialto's storm drain, which eventually connects other drainage facilities to the Cactus Basins. In addition, there are also three major project components required for improvements in the Cactus Basins, including a dual-purpose pipeline, water conservation dams in Basins 3 and 3A, and basin berms in Basins 1 & 2. SBVMWD has been working cooperatively with WVWD, City of Rialto, and San Bernardino County Flood Control District (SBCFCD) to carry out the project components. Upon completion of the required facilities, up to 7,000 acre-feet of recharge can be accommodated annually in Basins 1, 2, 3 and 3A initially. There are two Environmental Protection Agency (EPA) approved models that demonstrated the proposed recharge would not adversely impact the design remedy for groundwater contamination. The conclusion is anticipated to be further confirmed by a joint basin model, once developed, which is led by SBVMWD in partnership with WVWD, the Cities of Rialto and Colton, and UTC. Environmental documentation tiered off the Environmental Impact Report (EIR) work prepared by the San Bernardino County Flood Control District (SBCFCD) is under way. It is anticipated that the facilities will be ready for recharge in 2016. B. Sustainable Groundwater Management Act of 2014. Daniel Cozad, General Manager of the San Bernardino Valley Water Conservation District gave an introduction and overview presentation of the Act, showing why the legislation was passed, what are its major components, what does it mean for the San Bernardino Valley, and the concept of a Groundwater Sustainability Council. The legislation was passed due to various reasons such as the drought and over pumping of unregulated groundwater basins. The major components of the Act include; local regional control by a Groundwater Sustainability Agency (GSA), preparation of a Groundwater Sustainability Plan (GSP), monitoring and mitigation, and funding authority for the GSA The Act exempts some requirements for adjudicated basins, and allows for the State to step in if no entity is managing the groundwater sustainably. Any group can elect to become a GSA. GSPs cannot determine water rights. The Department of Water Resources (DWR) will review the Plans to see if they conform to the substantive requirements, but does not approve the Plans. The legislation allows charging fees to develop and administer the GSP. The state can intervene if there is no GSA or alternative plan by June 30, 2017, or no GSP by January 31, 2020 or January 31, 2022, depending on the groundwater basin type. The State can also intervene if the GSP is inadequate or not being implemented in a way to achieve the sustainability goal by January 31, 2022, or there is a long-term overdraft and a failure to implement a Plan in an adequate manner, or after January 31, 2025, if there are significant depletions of interconnected surface waters and there is a failure to implement a Plan 6/53 355 in an adequate manner. He reviewed the concept of a Groundwater Sustainability Council as the GSA for the San Bernardino Valley, which would be groundwater producer focused, it would be integrated with the Basin Technical Advisory Committee (BTAC) and other groups, it would be Memorandum of Understanding based and voluntary. It would allow the basin a mechanism to purchase additional entitlement water that is available in wet years. The discussion is at the beginning stages of the concept of how it may work and what people may think about the concept. The concept outline was presented to LAFCO and they appear to be supportive of the idea. Chairperson Corneille recommended that the Advisory Commission support the development and implementation of a Groundwater Sustainability Council for the equitable, sustainable groundwater management in the San Bernardino Valley, which complies with the Sustainable Groundwater Management Act of 2014. It was moved by Alan Dyer to support the development and implementation of a Groundwater Sustainability Council for the equitable, sustainable groundwater management in the San Bernardino Valley, which complies with the Sustainable Groundwater Management Act of 2014. It was seconded by Ron Coats. The motion was unanimously adopted. C. State Water Project Supplies/Water Management Plan. Bob Tincher reported that the State Water Project Table A allocation was increased to 20 percent. He reviewed the reservoir conditions and showed nine model runs that the DWR performs to determine various scenarios and that the Table A allocation would be based on the different scenarios. Given the best conditions the Table A allocation could go as high as 66 percent and assuming the worst conditions that allocation could be as low as 21 percent. Mr. Tincher reviewed the 2015 Regional Water Management Plan statement. The statement showed artificial recharge to date at 1,763 acre-feet and the imported water supply portfolio balance at 38, 176 acre-feet. The Water Supply Contingency Workgroup has begun to meet to discuss how to share in the shortage this year. Mr. Tincher reviewed the 2015 Imported Water Delivery Schedule which showed the water orders based on various Table A allocation amounts. The group is discussing how to divide the imported resources for the year based on various allocation levels. They have begun planning and once the delivery schedule is finalized, it will be brought back to the Commission. Agenda Item 4. Announcements by Commissioners. Chairman Corneille announced there would be a Sustainability Festival at the University of Redlands on March 14 from 11 :00 a.m. to 3:00 p.m. There will be booths and information on sustainability overall and the admission is free. San Bernardino Valley Water Conservation District will have a table at the event. Alan Dyer would like ideas on how to encourage more participation in the Commission. Karen McHugh indicated that Riverside-Highland Water Company would like to make a presentation. Chairman Corneille indicated they could present at the September meeting. Agenda Item 5. Future Business A. Identify Items for Future Agendas 7/53 356 The next meeting date for the Advisory Commission on Water Policy was set for June 11, 2015, at 6:30 p.m. Potential topics may include Watershed Conjunctive Use Project/Habitat Restoration/Water Conservation, Hydro-electric Project, and a presentation from the City of Redlands. Agenda Item 6. Adjournment There being no further business, Chairperson Corneille adjourned the meeting at 7:57 p.m. Respectfully submitted, Lillian Hernandez Board Secretary 8/53 alle BERNARDINO MUNIC IPALY WATER DISTRlCT DATE: June 11 , 2015 TO: Advisory Commission FROM: Douglas Headrick SUBJECT: Santa Ana River Conservation and Conjunctive Use Program Background Proposition 84, The Safe Drinking Water, Water Quality and Supply, Flood Control, River and Coastal Protection Bond Act of 2006, authorized over $1.5 billion for water supply and water quality projects (Chapter 2) throughout the State of California. The funding was allocated by region with the Santa Ana [watershed] region being allocated $114 million under Chapter 2. So far, the State has released funding under Prop 84 three times. The first round provided $13 million and the second round provided $16 million and $12 million (drought round) leaving a balance of approximately $60 million after taking into account the administrative costs for the Department of Water Resources. The five regional water agencies that cover the watershed, Eastern Municipal Water District (EMWD), .Inland Empire Utilities Agency (IEUA), Orange County W ater District (OCWD), San Bernardino Valley Municipal Water District (SBVMWD), and Western Municipal Water District (WMWD) decided to explore the possibility of developing one, or more, watershed-scale projects that would provide benefits to the entire watershed and might only be fea sible given a large grant or other funding. Realizing that this type of project could be interpreted to violate certain terms of the 1969 Orange County Judgment such as, 9/53 "OCWD is enjoined and restrained from pumping, producing and exporting or directly or indirectly causing water to flow from Upper to Lower Area, except as to salvage of evapo-transporation losses ... " the agencies took their desire to the Santa Ana River Watermaster Committee (Watermaster) which is given the responsibility for administering the terms of the Orange County Judgment. The Watermaster Committee, composed of representatives from each of the regional water agencies except EMWD, supported the concept and added EMWD to the group. The collective group of agencies was then named the "Santa Ana River Watermaster Action Team" (Action Team). The Action Team solicited proposals from a select group of consulting firms and chose Dudek after a formal evaluation process. They also asked Valley District to be the contracting agency and to provide project administration. The costs have been divided equally amongst the five agencies. This project was presented to the Advisory Commission in July 2013. Since that time, the Action Team has worked collaboratively to develop a proposed, watershedscale project that generally consists of the following project elements: 1. Arundo removal and habitat creation/restoration projects for Santa Ana Sucker ($7.5 million grant request); savings 2,000 acre-feet per year (AFY): remove the remaining 500 acres of arundo in the watershed which will save about 2,000 acre-feet per year and construct about 3.5 miles of habitat for Santa Ana Sucker in order to obtain permits for various water supply projects such as the Enhanced Recharge in Santa Ana River Basins Project. 2. Water use efficiency ($2 million grant request); savings 7,439 AFY: expansion of the existing water use efficiency program that received grant funding during Proposition 84, Round 2 to provide 1$/SF to remove 1.5 million square feet of turf and provide funds to help up to five (5) agencies switch to a water budget based rate structure. 3. Create water banks in the watershed ($49 million grant request); dry year yield 60,000 AFY: create a diversified, upstream water bank that can be used to store wet year water and then pump that water during droughts, providing dry year yield. Recommendation Receive and File 10/53 Attachment SARCCUP Presentation 11/53 SARCCUP Santa Ana River Conservation & Conjunctive Use Program A~~y Co~mission on Water Po~ ~ N 'w en 1 · ~~:..- J~ne-tl,20 1 5 WATERSHED-SCALE COLLABORATION -.. hL<.,d E."piqr.WAn.RK.EEPE.~. _ · -~ · · _... .-.. .. Inland Empire Urilir.es A9tncy A. MUNIClr.U WATtll OISftlCf lAJt Ct ~ w 'w U'1 C OU~TY COASTKEEPER. -··· * Provides watershed-wide regiOOa-1e-ollabcii:~atie·A * Creates new water supply 0 0 10,439 AFY from Arundo and Turf remova l 60,000 AFY dry-year yield capacity * Increases resiliency of water supply * Improves natural environment * Implements OWOW IRWMP 3 -::---....: . * Habitat Improvement: Arundo ~em-oval Ana Sucker fish habitat restoration ~~ g.an-ta * Water Use Efficiency: Turf Replacement, support for conservation-based rates, outreach * Groundwater Bank: Put & Take Facilities 4 * Boo acres of Arundo removal * 1 acre uses 4+ acre-feet of water per year more water than native habitat * 3,000 afy of water conserved . * Removal to be completed within 5 years 5 N W L\o;slOll et1d • lOOIK'S<PIO Dump CJ PAR Pr~ QPARE•=•~ 11coE2$0A1:1~P•oi"" Prado Basin and Upstream wv ~~ e i--t::J ~_L_""_.s_,~_•_·1Atu ~""~D-u_P_Dn_1'IM ~·~_C:_-~'-o_cv_ro~s_11_w_11_~_n_a_""~~'lll»n ~-1-llll ~~"'-•d_•_a. ~~·~~~~~~~~~~~~~~~~~~~~~~~~~~~~A-ru ~n-d_o~R-e~rn-o_v~a-l_P_r_o_j_e_c_t_A_r_e_a~s W S ---, L,$S1cn~~•1>11o 0 S.000 i!i.000 .........l:::::======fFffi * Santa Ana Sucker Habitat Restorati01=1 * Restore 41 acres and create 18,250 linear feet of habitat -. - ___- --........... ,_ ...... ..-....,., ... ... . ·' ~e Crree le -J";",.; ::" ~ 11''\.c"i;l......... EXISTING CONDITIONS I I 11 I ___ Pfflt7L>ndllll £UnclwlgN) ..., POSTPROJECT CONDITIONS . bist!n9 V~gttltion 11aw Upbnd .. Vtgttlllon __ _,... Ptdlty t..>ndfill (UOIN119tdl * * * Builds on existing programs & Prop 84 drought grant 1,500,000 ft 2 turf removal Adds $1.oo/ft2 to MWD turf replacement program * 7,439 afy estimated water savings * Outreach program 10 * Provide support for five agencies to implement conservation-based rates * Includes experts on rate setting methodologies 11 * AF potential storage capacity in SAR GW Basins 1,000,000 * Phase 1 of SAR CUP Water Bank: 180,000 af * Build recharge and extraction infrastructure to take advantage of wet year extraordinary supply * Storage on use-side of major earthquake faults * All 5 agencies share equally in dry year yield 12 . Wa1cr T.U.lr ~Jt 1.2 1 t 1 I o.8 o.6 I Dry Year Yield I o Imported Water D Recycled Wat er Groundwater • Surface Water 0.2 0 I Wet Year I Average Year I Dry Year Agency GWR Basin SBVMWD Bunker Hill 60,000 20, 000 Chino 96,000 32,000 EMWD San Jacinto 19,500 6,500 WMWD Elsinore 4,500 1,500 OCWD Orange County 0 0 180,000 60,000 IEUA Storage (AF) DYY{AFY) (larger storage volume than Pyramid Lake) ~ Water Bank Storage Volumes - Phase F~atut~· · -* 96,000 AF Storage ·capacity~ --- * 32,000 AFY New Dry-Year Yield Production and exchanges Construct * 48-in. Baseline Feeder Extension * Turnout & lnterties at San Sevaine Crk * Devil Canyon-Azusa PL dual use turnout near San Antonio Crk * Extraction wells - into South Pressure Zone of RW system (for OCWD take) 16 * - Chino Basin exchanges can be paper-SW-E e~h~nges, wet ~ water put and takes, or exchanges through CDA. * Institutional agreements will be required for puts & takes. WET WATER EXCHANGE BASELINE fEEOER EXTENSION IEU,l\·SBVMWO ... "<z ...u><c: DEVIL CANYON · Al\JSA Pl"EUNE SGVMIVO % RlAITOfEUlER (MWO) GWR PUT ...~ GWR PUT ;.! CHINO GROUNDWATER BASIN DIRECT TAKE IEUARW EXCHANGE TAKE t; ....=> ~ c.. ~ "~ ~ CHINO OESALTER EXCHANGE PUT OR TAKt Features * * AF Storage Capacity 20,000 AFY New Dry-Year Yield 60,000 Construct * 5 Extraction Wells * Transmission pipeline * Expand Redlands PS (add 20 cfs pump) Features * 19,500 AF Storage Capacity * 6,500 AFY New Dry-Year Yield· Construct * Mountain Ave. West Recharge Basin * 3 Extraction Wells Mounta.nAve. Nonn Proposed RKllAr~ F'1C.11ty .,..,·· '·,.., . .... M1>1Snt:1 nAve E~s: Proposed Recharge Facluy " ' EJJWD u ·~ . ... Rl\NHJ:t4 ,, . Proposed Storm Water Relum Pipeline ·Option 2 I Features * 4,500 AF Storage * 1,500 AFY New Dry-Year Yield Construct * 2 Dual Use Wells (Injection and Extraction) Banks are Physically Connected & Provide Yield to Lower Watershed Chino Basin (96,000 af) I - -- - -Ir. ~ · * SARRCUP Phase 1 Dry-Year Yielct: $~4e>f~ * 2015 Spot Market: $1,500/af * MWD with allocation surcharge: $2,500/af 24 ~- '' ~[:' '_ ;,- / ' -~ D D D I D D D c...:> "°' c.n c...:> * Takes regional cooperation to the next level * Improves environment * Reduces water demands * Creates additional new water supply * Approved by 5 agencies Questions alle BERNARDINO MUNI CIPALY WATER DISTRICT DATE: June 11 , 2015 TO: Advisory Commission FROM: Douglas Headrick SUBJECT: 2015 Drought Update On June 1, 2015 the first Statewide mandatory water use restrictions were enacted in California. The Valley District Board conducted a press conference on that day to inform the public about the drought and what they need to do. The presentation from that event will be provided to the Advisory Commission. Recommendation Receive and File 39/53 c /\ l I i:: 0 R N I A WATER J=IX AlTCRtlAllVC 4A APRIL 2015 nr I lh(\l r Cl (Ml 'NATrU PROPOSED PROJECT CHAN GES Reducing environmental impacts and improving operations I Ci> 0 ' \ ENVIRONMENTAL BENEFITS ' Eliminate the pumping plants, permanent power lines, and sediment basins at the northern Intakes to reduce visual and air quality impacts and energy needs. SACRAMENTO COUNTY 0 Reduce visual Impacts near the town of Hood. 0 Remove permanent tre1nsmlsslon lines near Stone Lakes Wildlife Refuge to reduce environmental Impacts. • Reduce Impacts on Staten Island wildlife habitat by removing the proposed tunnel launch facilities, large reusable tunnel material storage areas, a barge landing site, and high voltage transmission lines. This change also reduces the overall construction time on Staten Island. • 0 \ \ r ,. ,,. ' ,. \ ') Eliminate large access pads at vent structures to reduce the need for earth work 0 I I \ I Eliminate environmental impactson ltallan Slough by removing an underground siphon. \ • • Gravity-fed operation improves tunnel operation and maintenance, reduces power requirements at the northern Intakes, and Improves long-term tunnel rellabllity by reducing Internal pressure. 1 ""·~· Consolldate pumping plants previously proposed at the three northern intakes to one combined pumping facility located on existing state-owned property at Clifton Court to reduce environmental and construction impacts. o Intake Main Construction Shart "' Vent Structure - North Tunnels Main Tunnels • Forebays • Reus~ble Tvnnel Material Area Plan Area - CAI lf:ORNIA NATURAL !~!:SOURCES AGENCY I CAI II ORNIAWATERICIXCOM c AL I F 0 RN I A All[llllATIVE 4A WATER !=IX - -- - APRIL '.2015 PlllAMr ctr/\U WAHrl REFINED TUNNEL O PTION A ND INTAKE DESIGN MAPPING A BETTER ROUTE l=ORWARD In 2013, significant changes to the proposed water facilities and operations reduced the overall project footprint by one-half of its original size to minimize community impacts. In 2014, the water facilities were further refined to address engineering improvements and feedback received during the public comment period. Since then, additional changes have been made to the proposed facilities. Changes to the project: Reduce construction impacts on Delta communities and the environment Reduce power requirements Increase use of stateowned property 0 Allow for gravity now at certain river conditions These changes, along with others, will be available for formal review and comment in the Partially Recirculated Draft Environmental Impact Report (EIR)/Supplemental Environmental Impact Statement (EIS) expected for release in June 2015. ENGINEERING CHANGES TO INTAKE l=ACILITIES - - - - - - 2014 PROPOSED DESIGN In 2014, the three intakes were modified to eliminate pumping plants and permanent power lines from each intake site, which reduced overall power needs. 2015 PROPOSED DESIGN The three intakes have been further refined to convert previously-proposed concrete sedimentation basins into two earthen bays. This change eliminates the need to drive hundreds of piles (concrete pillars) into the ground, reduces equipment noise and truck trips, and significantly reduces the volume of concrete needed to build the Intakes. This modification isexpected to reduce the number of piles at each intake site by about 75 percent. v CAI IFORNIA NA I UllAL l~FSOUflClS AGENCY J CAL 11-0flNIAWATERFIX COM :. -., c A L I F 0 R N I A r'' _,I WATER FIX ----,' ALTERN~TIVE •IA APRIL 2015 R[LIAEIL[ CLEAN WATEn A STATE-O F-THE-ART SOLUTIO N SCIENCE, TECHNOLOGY, AND INNOVATION This prudent. realistic, science-driven, and achievable approach will fix California's aging water delivery system and protect our economy and public safety. This approach responds to an unprecedented level of public review and comment. The project covers five main areas: ® WATER SECURITY 6Af:.i \!.:!f) CLIMATE CHANGE ADAPTATION r:J::::.. \JJ ENVIRONMENTAL PROTECTION f.:W SEISMIC ~ SAl=ETY @) Al=f:ORDABILITY Upgrading our water delivery system would improve the natural direction of river flows, help native fish species migrate to and from the ocean, guard against water supply disruptions, and ensure that local water projects like recycling and groundwater recharge work better. Protect our state'swater sL1pplles from climate change through water system upgrades -0' Improve river nows for threatened lisl1 species Ecosystem restoration and protection I ' , I ' 2 t 150' cvlcv 2 tunnelsup to 150' below ground designed to protect California's water supplies 3 new Intakes, each with 3,000 cubic-feet per second (cfs) capacity. Average annual yield of 4.9 million acre-feet. Protection against water supply disruptfon from failure of aging levees due to sea-level rise, earthquakes and flood events Reinstate a more natural direction of river flows in the South Delta by 46-160 percent New criteria to protect spring outflow to San Francisco Bay Crlterici to protect Sacramento River Oows and fish v CALIFORNIA NATURAL RESOURCES AGENCY I CALlr:ORNIAWATERFIX.COM California Water Fix will include ~2. 100• acres of habitat restoration to mitigate for the construction and operation of the new water facilities. These costs will be paid for exclusively by water agencies benefiting from the project. Over the next 5 years, California will pursue more than 30,000 acres of critical D~lta restoration under the California EcoRestore program, and pursuant to pre-existing regulatory requirements and various enhancements to improve the overall health of the Delta. Proposition 1 funds and other state public dollars w ill be directed exclusively for public benefits unassociated with any regulatory compliance responsibilit ies. Improve habitat conditions along live miles of important juvenile salmon migration roul es UP TO Restore Udal and non-tidal wetland habitat to sustain habitat functions for native wildlife, such as the giant garter snake and salmon Restore native riparian forest and scrub to support habitat for riverside species and improve linkages for terrestrial and other native species 1,000 ACRES Improve connectivity among existing patches of grassland and other natural habitats UP TO GRASSLANDS 100 ACRES RIPA RIAN H ABITAT PROTECTION ,..,2,100· UP TO TOTA L ACRES 01= ECOSYSTEM RESTORATION & PROTECTION 800 ACRES OV ER 200 ACRES RIPARIAN HABITAT RESTORATION TIDAL & NON-TIDAL WETLA NDS 'Preliminary, subject to cha nae based on envlt'Onmr:ntal review For more details on the full scope of environmental enhancements and government agency responsibilities. please visit: http://resources.ca.gov/caIlfornla_water_actlon_pla n Thecost to fix California's primary water delivery system ls estimated at $14.9 billion - or about $5 a month for urban water users - and will be paid for by public water agencies that rely on the supplies. An Adaptive Management and Monitoring Programwill guide real-time operations of the system. Our communities - farms, businesses. homes and economy depend upon reliable. affordable. high·quality water supplies. The time to act is row. Californians cannot afford a broken and unreliable waler delivery system. For more information please visit callfornlawaterfix.com. - - CALlr0RNIA NAI Ul~/\L RESOUl~CES AGENCY I CALlrORNl/IWATERl-IX COM ( (· -). c A L I F 0 RN I A ~ WATER FIX \ ./ AllCONATl'E 4A APRIL 2015 RC LIABLE Cl f AN WAHR PROTECTIN G FI SH \ J _( r A new water conveyance system can \_\ ~ improve environmenta l flows over and above current conditions in four major ways. No other project fixes the problems caused by the existing, inefficient system. ; PROTECT FISH W ITH STATE-OF-THE-ART l=ISH SCREENS tJr:.( _,\ :Jrl<sbu r-1 Courtla .-----©- - - - G' L a di It. .~ . ~ .------CD- - -NEw CRITERIA TO PROTECT SPRING OUTl=LOW TO SAN l=RANCISCO BAY SACRAMENTO RIVER l=LOWS PROTECTED $1\CllAMENro lllY'R Fl.OWS (CFS) l"A~IMUM DMA510NS i\l.LOW£D (CFS) • ~~--~~-f.2 ~~ IMPROVE FLEXIBILITY TO AVOID WATER DIVERSIONS AT LOCATIONS THAT HARM l=ISH ~ ~ fu~l!l ~"Ti@ ~ ~--- ® --- MORE NATURAL DIRECTION OF SOUTH DELTA F=LOWS . ~ 'f•C•U'f-4~\.'i(..] 4 ' Depending on woter yco1type and fish presence . -., CAL I FORNIA All<At<ATIVE4A ('..:./ WATER l=IX APRIL 2015 •• / RELIAl\U CL[AU \'h\TCR PROTECTING WATER SUPPLIES Water flows from the Sierra Nevada mountains through the Sacramento·San Joaquin Delta (Delta), a critical link in California's water supply network. The existine system is outdated, inefficient and in need of repair. Hundreds of miles of dirt and rock levees are all that protect our state's water supplies from saltwater intrusion and disruption. Without fixes to our water supply infrastructure, the Delta and the state's economy face threats: ~----- (1) ....---- @ --~ ~-- @ --~ - Cl Whll CllANG ENVIRONMENTAL DECLINE SEISMIC RISI< <~ KY <~ • Sea levels continue to rise. putting pressure on aging levees, some protectins islands more than 20 feet below sea level. • With warmer average temperatures expected, more intense storms and floods are likely, Increasing pressure on dirt levees. • Five active fault lines and many more inactive faul t lines pose a threat to our existing water delivery system. • A major earthquake or stormcould cause flooding on as many as 20 islands at once and jeopardize statewide water supplies. A SMALLER PROJECT COSTS MORE AND WASTES WATER IN WET YEARS • Existing operations cause reverse river flows, trap and kill migrating salmon, and have contributed to a severe decline in delta smelt. A 9,000 cr:s r:ACILITV WOULD PROVIDE AN AVERAGE ANNUAL YIELD or: 4 .9 MILLION ACRE-r:EET WET VEAR The charts on the right depict the effectiveness of a 9,000 cubic feet per second (cfs) facility, which captures maximum water supplies when all environmental flow improvements are met. A 9,000 (cfs) fadlity is 40 percent smaller than the existing system and provides the greatest complement to local water supply projects by allowing the safe capture of water in wet and above· normal years so that it can be stored and used in dry years. A smaller facility would provide much less water. The proposed 9,000 cfs facility is the best option for: • Reducing reverse flows and minimizing the trapping of migrating fish • Enhancing the ability to store surplus oulflows and reduce diversions during cri tical fish migration periods • Improving drinking water quality to meet public health standards • Expanding groundwater recharge and recycling at the local level • Protecting against water outages due to climate change, flooding, and earthquakes The cost of building the tunnels as a result of an emergency outage would range anywhere from $3.6- $18.2 billion more than it would cost to build them now. ABOVE-NORMAL YEAR The yields depicted account for climatechonse. which Is expected to cause more intense storms oncl flood events. C/\LlrnRNI/\ NAT URAL RESOURCES AGENCY I C/\LlrORNIAWATERl·IX COM RESTOR ING THE SACRAMENTOSAN J OAQU IN DELTA ECOSYSTEM California EcoRestore (EcoRestore) will accelerate and implement a comprehensive suite of habitat restoration actions to support the long-term health of the Sacramento-San Joaquin Delta's (Delta) nat ive fish and wildlife species. 3,500 ACRES 9,000 MANAGED W ETLANDS CREATED for subsidence reversal ond carbon management ACRES TIDAL & SUB·TIDAI. HABITAT RESTORATION MORE THAN 30,000 17,500+ ACRES 01= DELTA HABITAT RESTORATION & PROTECTION ACRES l'LOODPLAIN RESTORATION 1000+ Aquatic, riparian and upland habitat projects: multl·benefit ()ood management projects 500+ ocres restored: planning, permitting and financing secured (or on additional 17,000 acres Implement multiple ~sh passage Improvement projects in the Yolo Bypass and other key localfons ACRES PROPOSITION 1 & l E l=UNOED RESTORATION PROJECTS Coordinate witli existing local Habitat Conservation Plans and Natural Community Conservation Plans (HCP/ NCCP) Engagement of the Delta's local governments to determine community supported restoration practices • Solicit and receive support from federal agencies and other partners • Support and engage in inter-agency and stakeholder joint venture effortsaimed to recover Central Valley salmon and steelhead populations • Coordinate with non-governmental organizations. academia, and other stakeholders throughout California to address various stressors In the Delta, such as Invasive species and methylmercury Through the Delta Stewardship Council's Delta Science Plan, leveragecollaboraLive Delta science efforts sudi asU1e lnleragency Ecological Program and InterimScienceAction Agenda, and undertake Investigationsthat support adaptive management and long· term understanding of Delta svstems. • Floodplain and tidal/sub-tidal habitat restoration required by existing regulatory frameworks will be funded by state and federal water contractors • Wetlands restored for subsidence reversal and carbon management will be supported by the A B 32 Greenhouse Gas Reduction Fund and other sources • Various aquatic, riparian, and upland restoration and multi·benetit flood management projects will be supported by Proposition 1 & lE • Additional projects will be supported by various local and federal partners v CALIFORNIA NATURAL RESOURCES AGENCY I RESOURCES.CA.GOV 2015 Dutch SIOUgh Krl!lhls Land~'O <Mfol Golo'J 2018 HUlough Gool l•lond ot Rush Ranth '? ? -~,~- r 2017 _,_,_] l'rolptcl Island Wclloce Wtlt and 'TV• c~ 119 Crosstngs LOWOI' Putoh Cfff1( Re<rllgrrnont -----l --------- ~ ( lnlol<• 0 Tr ocy '·•• - - 'll>"n<ll DGllo l«Jbllot Ao>lorollon O Roodflldn Raslorallon 0 0 0 SW>ldonc• - Tidol l~Jlorollon C<Jtbon Slor<>ol. and 1-tig'olOIY lll'd Hollitol llan1ors lo Fish Po•soge For more information please visit: http://resources.ca.gov/callfornla_water_actlon. plan CALIFORNIA NAl URAL RESOURCES AGENCY I l<ESOURCES.CA GOV Frequently Aslced Questions 1. What is California WaterFix? Califo rni a WaterFix is a proposal backed by t he administrations of Govern or Edm und G. Brown Jr. and President Barack Obama to change how we divert water from t he Sacramento-San Joaquin Delta. The Delta is a source of water for two-thirds of California's population and one-third of its irrigated farm land. The plan seeks to accomplish three primary goals that have long bedeviled state and federal policymakers: 1. Allow for more natural flows in the Delta to benefit sa lmon, smelt, and other species 2. Increase water supply reliability by giving the water projects that divert from the Delta more flexibility to move water without harming fish 3. Guard the Delta water diversion point from natural disaster disruption, such as earthquake or flood. The proposa l involves construction of three new Intakes, each with a maximum diversion capacity of 3,000 cubic feet per second, on the east bank of the Sacrament o River between Clarksburg and Courtland in the north Delta. Each intake site would employ state-of-the-art on-bank fish screens and, although the diversions would be located outside of t he main range for delta and longfin smelt, the fish screens would be designed to meet delta smelt criteria. Two 40foot-wide underground pipelines would carry the diverted water by gravity flow approximately 30 miles to the expanded Clifton Court forebay where two pumping plants wou ld be constructed to maintain optimal water levels in the forebay for the existing State Water Project (SWP) and Centra l Va lley Project (CVP) pumping facilities. Those existing pumps would lift t he water into the canals t hat flow hundreds of mfles to supply San Joaquin Valley farms and cities as far away as San Diego. The North Delta intakes would be operated with the existing south Delta pumping facilities as a "dual conveyance system" which would be a significant upgrade from the existing system. The existing south Delta pumps pull water from nearby channels in an unnatural direction, called "reverse fl ows," which can draw fish off t heir migratory path into predator-rich channels. Besides the environmental imperative to restore more natural flows to the Delta, there are infrastructure security reasons to modernize the Delta water conveyance system. The Delta's peat soil, composed of thousands of years' worth of rotted tules and other wetland plants, oxidizes when dried and t illed. 48/53 Now many of the approximately 60 islands that make up the Delta - most are farmed - are sunken as much as 20 feet below sea level in their centers. Should an earthquake, flood, or some other force knock down those levees, the sunken islands would fill up with water, drawing saltwater from San Francisco Bay eastward toward the SWP and CVP south Delta water intakes. Water supplies could be disrupted for weeks, months, or years, depending upon the extent of the damage. 2. What is California EcoRestore? The Delta hardly resembles the vibrant estuary of 200 years ago. Starting with the Gold Rush, people drained the Delta's marshes. They also dredged and straightened its meandering channels so that they could farm its rich, peat soil. People built levees -- mounds of earth -- along the channels to hold back water, and in many places, lined those channels with big rocks to protect the levees from being scoured by water. In this way, the Delta lost not just its wetlands but also the riverside forest that shaded and harbored native fish. California EcoRestore is an initiative by state and federal water and wildlife agencies to restore 30,000 acres of Delta wildlife habitat over the next four years. The types of habitat targeted include tidal wetland, floodplain, and channel margin. 3. How do California WaterFix and California EcoRestore relate to the Bay Delta Conservation Plan? Federal and state water and wildlife agencies, in cooperation with the public water districts that depend upon water delivered from the Delta, launched the Bay Delta Conservation Plan (BDCP} in 2007. The effort aimed to find a way to accomplish dual goals: • Enhance, protect and restore the Delta ecosystem and; • Improve the reliability of water supplies for California. After hundreds of public meetings and extensive analysis, a draft BDCP and corresponding environmental analysis was released in December 2013 for public review. The plan was a habitat conservation plan under Section 10 of the U.S. Endangered Species Act and a natural community conservation plan (NCCP) under the state Natural Community Conservation Planning Act. Regional habitat conservation plans and NCCPs cover a wide range of species over a large landscape, and include commitments and assurances for a specific permit term (the BDCP requested a 50-year term). The draft BDCP included a preferred alternative with the same basic water conveyance changes that are now embodied in California WaterFix. The draft plan also included 145,000 acres of protected or restored habitat related to meeting the requirements of the federal and state laws for contributions to the recovery of the covered species in conjunction with the assurances requested for the 50-year permit. 49/53 Review of thousands of public comments received on the draft BDCP and its draft environmental impact documents raised considerable doubts as to whether a Section 10/NCCP approach -- with a SO-year term -- is realistic, given the uncertainty about future ecological conditions under climate change, as well as a lack of scientific data about how the Delta's estuary might respond to habitat restoration. In April 2015, the principal backers of the BDCP -- the California Department of Water Resources and the U.S. Bureau of Reclamation -- announced a pivot in their approach to accomplishing the dual goals of ecosystem restoration and water supply reliability. They have chosen to study additional alternatives to modernize the Delta's water conveyance system and achieve the dual goals through implementation of the North Delta intakes and associated conveyance facilities, including the tunnels. These "sub-alternatives" would achieve compliance with the U.S. Endangered Species Act through the Section 7 consultation process and California Endangered Species Act through obtaining a 2081b incidental take permit and would not include long-term assurances for water project operators. The California Department of Water Resources has identified one of these sub-alternatives, Alternative 4A (California WaterFix), as its proposed project. At the same time, the state and federal governments, through California EcoRestore, will pursue a more aggressive short-term schedule for habitat restoration in the Delta - 30,000 acres launched over the next four years - so that scientists may learn from the effort and ideally help native species begin to recover. The draft BDCP and associated Draft EIR/EIS are still "live" documents; they will be referenced in several of the sub-alternatives evaluated in the Partially Recirculated Draft Environmental Impact Report (EIR)/Supplemental Draft Environmental Impact Statement (EIS). Those documents are scheduled for public review in June 2015. The BDCP website is still available, and all the documents are available there for continued public reference. There is a new website [CaliforniaWaterFix.com] for information about specifically Alternative 4A, the new proposed project under the California Environmental Quality Act (CEQA). 4. What caused federal and state agencies to shift from a habitat conservation plan? The U.S. Fish and Wildlife Agency, National Marine Fisheries Service, and California Department of Fish and Wildlife face great uncertainty about how climate change will affect the recovery of native fish in the Delta. (The average early spring snowpack in the Sierra Nevada has decreased by about 10 percent during the last century, a loss of 1.5 million acre-feet of snowpack storage, and 50/53 there has been an observed rise in sea level of seven inches at the Golden Gate over the past century.) Through the extensive analysis of the draft BDCP, it became increasingly clear that it would not be feasible for the state and federal governments and public water agencies to put in place enough funding and water (in terms of water available for Delta outflow to San Francisco Bay) to deal with all contingencies that could affect species recovery over the next 50 years. In other words, the terms of a SO-year permit would be too high, given uncertainty, for the state and federal government and Delta water users to bear. However, California's water supply for 25 million people remains vulnerable, as do the existing risks to sensitive aquatic species without this upgrade. We cannot in good conscience set aside these risks, so we are seeking to implement a proposed project with a reduced long-term objective with more limited authorizations under the federal and state endangered species acts to get this project started. We are also going to immediately move forward with a goal of starting 30,000 acres of fish and wildlife habitat restoration over the next four years. Separating the habitat conservation from water conveyance allows for the evaluation of the new intakes and pipelines on their merits, while habitat restoration can immediately proceed with the objective of restoring the Delta ecosystem. 5. Will the changed permitting process require new environmental analysis? What is the process and time line going forward? The Partially Recirculated Draft EIR/Supplemental EIS that analyzes this change is expected in late June 2015. A new Notice of Intent will be published by the U.S. Bureau of Reclamation in the Federal Register to announce the availability of the Recirculated Draft EIR/Supplemental Draft EIS. The alternatives in the original Draft EIR/EIS remain the same, and they are still part of the required range of alternatives to be considered in the Recirculated draft. Additional alternatives will also be presented in the Partially Recirculated Draft EIR/Supplemental Draft EIS, including Alternative 4A, also known as California WaterFix, which is the new CEQA proposed project. There will be a 45-day comment period associated with the Partially Recirculated Draft EIR/Supplemental Draft EIS. 6. What habitat restoration efforts will be included as part of the mitigation for California WaterFix? California Water Fix will include approximately 2,100 acres of habitat restoration to mitigate for the potential adverse impacts of the construction and operation of the new water facilities. These costs will be paid for exclusively by water agencies benefiting from the project. 51/53 7. How will California EcoRestore be funded? California EcoRestore aims to break ground on - and in some cases complete - at least 30,000 acres of habitat restoration in the next four years. Over this time period, we expect costs to reach at least $300 million. Much of that will be borne by the public water agencies that buy water from the SWP, operated by the California Department of Water Resources, and the CVP, operated by the U.S. Bureau of Reclamation. The public agencies that take delivery of water from those two Delta-based projects are responsible for creation of 25,000 acres of various kinds of habitat deemed beneficial to threatened and endangered native fish. Roughly $130 million from the state and federal water project contractors will be needed to get moving on restoration in the next three or four years. It's likely that the completion of all of these projects will add significantly to that estimated cost. Their total obligation will be based on what's needed to finish these projects and be in compliance with their regulatory obligations. California Eco Restore must be realistic to succeed. Habitat restoration is complicated and difficult. It involves negotiation, acquisition, permitting, design, construction, engineering, collaboration with landowners and local interests, mitigation, and financing. The Brown Administration committed to turning back the clock on 30,000 acres of altered Delta landscape. The state has a big involvement and firm commitment to making this happen for the sake of our natural heritage, regardless of who funds individual projects. Currently, the state plans to administer at least $75 million through Proposition 1 public funding over the next four years, including Delta restoration funds directed to the Delta Conservancy and the Department of Fish and Wildlife, as well as multi-benefit flood protection funds through the Department of Water Resources. AB 32 Greenhouse Gas Reduction Fund investments will likely provide between $20 and $30 million, though the final amount will be determined through the state budget process. 8. How will this change affect the overall cost of the preferred water conveyance project? The estimated $15 billion cost of the new intakes, pipelines, operation, maintenance and mitigation will not change. All of those costs will be borne by the public water agencies that depend upon the SWP and CVP. 9. Why can't California just reduce the amount of water it diverts from the Delta? California must continue its substantial investments in local and regional projects that involve conservation, recycling, stormwater capture, new connections 52/53 among suppliers, and other ways to improve the efficiency with which we use water and build drought resilience. All of these actions have gained us at least two million acre-feet in additional supply in the last 20 years, and that effort will cont inue under the Governor's comprehensive California Water Action Plan: http://resou rces. ca.gov/docs/ california water action plan/Final California Wa ter Action Plan.pdf. l<eeping pace w ith rising demand and creating a buffer of supply to cope with the vagaries of climate change will require steady progress on using water more efficiently, shoring up the reliability of existing supplies, and using new techniques to expand supplies. To also replace water supply lost as Delta deliveries decline wou ld significantly increase costs and leave local water districts vu lnerabl e to shortages. Desalination and water recycling projects, for exa mple, are more expensive per acre-foot than Ca lifornia WaterFi x and t ake considerable time for planning, permitting, and implementation. 10. How w as t he capacity of California Water Fix chosen? A facil ity capable of diverting up to 9,000 cubic feet per second of water from the Sacramento River provides the greatest complement to local water supply projects because it is the only project t hat ca n take fu ll advantage of water that is available in w et and above-normal years. A smaller project costs more and captures less supply. A 9,000-cfs facility includes the following benefits: • Reduce south Delta reverse river flows and minimize entrainment of fish that spawn In or migrate through the Delta • Enhance ability to store surplus outflows and redu ce diversions during periods when fish are vulnerable • Improve drinking water quality and ability of local water districts to meet public health standards • Support efforts to expand groundwater recharge and recycling to help meet California's new mandate to bring groundwater basins into sustainable patterns of pumping and recharge • Enhance seismic protection with ability to provide a base supply while Delta levees are repaired Furthermore, operational redundancy t hrough two pipelines is important during outage scenarios, such as periodic maintenance or a catastrophic event like an earthqu ake. In addition, a single bore tunnel would require a tunnel size of 60 feet or more. A tunnel this large wou ld set an engineering precedent. It wou ld also increase overall project risk due to increased equipment needs (more tunnel boring machines, etc.), potential lea ks, added ground pressu re, and engineering uncertainties t hat would need t o be t ested. 53/ 53