Loading...
HomeMy WebLinkAboutMinutes - February 7, 2006 SSCITY OF LODI INFORMAL INFORMATIONAL MEETING "SHIRTSLEEVE" SESSION CARNEGIE FORUM, 305 WEST PINE STREET TUESDAY, FEBRUARY 7, 2006 An Informal Informational Meeting ("Shirtsleeve" Session) of the Lodi City Council was held Tuesday, February 7 2006, commencing at 7:05 a.m. A. ROLL CALL Present: Council Members — Beckman, Hansen, Johnson, Mounce, and Mayor Hitchcock Absent: Council Members — None Also Present: City Manager King, City Attorney Schwabauer, and City Clerk Blackston B. TOPIC(S) B-1 "Presentation on 2005 Urban Water Management Plan, update on surface water treatment plant, and proposed Recycled Water Master Plan" Public Works Director Prima explained that the Urban Water Management Plan is required by the State every five years. It will be bought to Council for approval in March. He mentioned that on February 9 the Woodbridge Irrigation District (WID) Board will vote on whether to approve the City's request to extend by four years the period of time Lodi can bank water under its agreement. Mr. Prima recommended that the City proceed with a surface water treatment plant. With the aid of an overhead presentation (filed), Glenn Hermanson, Project Manager for RMC Water and Environment, stated that there would be a two-week public review period for the Water Management Plan. A 1.5% growth rate was used in its preparation. In 2005, Lodi used 17,300 acre feet of water. The groundwater levels in Lodi are decreasing at a rate of five inches per year. The City has a contract with WID for 6,000 acre feet of surface water from the Mokelumne River for a 40 -year period. Some of the City's treated effluent is recycled and used to irrigate farmland near the treatment plant. Based on recent calculations, it was determined that Lodi's sustainable yield from the groundwater is 15,000 acre feet per year. Available recycled water will grow from 7,200 acre feet per year in 2005 to approximately 10,380 acre feet in 2030. Without water meters, the City will exceed its groundwater and surface water supplies in 2018 and with water meters this is delayed to 2029. In reply to Council Member Mounce, Mr. Prima reported that staff is working with Stockton on studies for its use of Lodi's recycled water. City staff will be submitting a grant application to the State. He noted, however, that if this project were to occur it would take away the recycled water supply that could otherwise be counted in Lodi's Urban Water Management Plan. Wally Sandelin, City Engineer, recalled that in November 2005 staff gave a presentation to Council on alternatives for the WID surface water action plan and has now developed a conceptual schedule for implementation of the "treat and drink" option, in which a water treatment facility would be built with transmission facilities throughout the community. In March, staff will ask Council for authorization to begin soliciting consultant services to begin the initial studies. The project is estimated at up to $25 million, which would be paid entirely by new development. The plant could be online within four years and would involve chlorination of all the City's water. Mayor Hitchcock asked that staff provide Council with more information on groundwater recharge options. Continued February 7, 2006 Mr. Prima explained that he is recommending the surface water treatment plant, due to considerations related to wastewater discharge salinity requirements and the long-term sustainability of agriculture and urban life in the valley. He believed that salt build up in the Central Valley would be a significant issue in the future. The standard water quality goal for the Delta is 450 total dissolved solids (TDS) and the City's discharge is now 440 TDS. The proposed treatment plant would lower the salinity of the wastewater, making it more suitable for reuse. He acknowledged that, due to the size of the Westside project, it is feasible that development could help finance the plant; however, development fees would have to be increased substantially to accomplish it. Council Member Beckman commented that if the City does not have facilities in place to do groundwater recharge there will be no opportunities to partner with other water entities on such a project. Mr. Beckman stated that he was very much in favor of groundwater recharge. City Attorney Schwabauer stated that, according to the information provided by the water consultants, the projected growth in the City's water demand would make it appropriate to place the entire cost of the treatment plant on new development. Mayor Hitchcock pointed out that it appears the treatment plant option is being recommended based upon the proposed Westside development. She recalled staff had previously supported the groundwater recharge option. Council Member Mounce felt that a decision should be made expediently with consideration to the future, long-term value of water. C. COMMENTS BY THE PUBLIC ON NON -AGENDA ITEMS None. D. ADJOURNMENT No action was taken by the City Council. The meeting was adjourned at 8:12 a.m. ATTEST: Susan J. Blackston City Clerk 2 AGENDA ITEM CITY OF LODI COUNCIL COMMUNICATION TM AGENDA TITLE: Presentation on 2005 Urban Water Management Plan, Update on Surface Water Treatment Plant and Proposed Recycled Water Master Plan MEETING DATE: February 7, 2006 (Shirtsleeve Session) PREPARED BY: Public Works Director RECOMMENDED ACTION: Information only. BACKGROUND INFORMATION: Urban Water Management Plan Background On July 6, 2005, Council authorized Public Works staff to solicit Statements of {qualifications from engineering firms for preparing the 2005 Urban Water Management Plan Update, integrated Water Management Plan, Reclaimed Water Master Plan and a Water Master Plan for the General Plan Update. Three firms were chosen to assist the City in preparing the above referenced documents. On September 7, 2005, Council authorized RMC Water and Environment to prepare the City's 2005 Urban Water Management Plan (UWMP). At this meeting, Council also authorized West Yost & Associates to explore the potential for selling all or a portion of the Woodbridge Irrigation District (WID) surface water supply of 6,000 acre-feet per year until a plan for utilizing the surface supply is implemented. Purpose of the Urban Water Management Plan Urban water suppliers providing water for municipal purposes to more than 3,000 customers or supplying more than 3,000 acre-feet annually (afa) are required by the Urban Water Management Planning Act (Act) to update their UWMP every five years. The plans are submitted to the Department of Water Resources (DWR) for approval. The 2005 UWMP Update is the fourth update prepared and submitted by the City of Lodi. The State of California's strategic objective for requiring urban water management plans is to assist and encourage integrated regional water planning. The UWMP can be used as a source document for an Integrated Regional Water Management Plan (IRWMP) and is a condition for eligibility for Proposition 50 Chapter 8 grant funds and drought assistance. The City has recently applied for a Proposition 50 Grant to assist in the PCE cleanup and having a current UWMP is a condition of receiving the grant. The City of Lodi recognizes its water supply is limited and maintaining a reliable water supply is vital to the health of our citizens and local economy. The UWMP is being used as a planning tool to assure long term and reliable water availability for the City of Lodi. APPROVED: Blair King, City Manager J:1Water= UWMP SurfaceWater.doc 2/3/2008 Presentation on 2005 Urban Water Management Plan, Update on Surface Water Treatment Plant and Proposed Recycled Water Master Plan February 7, 2006 (Shirtsleeve Session) Page 2 Components of the UWMP The UWMP contains water planning and management information covering the time period between 2005 and 2030, The UWMP, in accordance with the Act, includes chapters that discuss the water service area, water supply, water demand, demand management measures, water supply reliability, water quality impacts on reliability, wastewater and recycled water, supply and demand comparisons, implementation of the plan and water shortage contingencies. Summary of UWMP Findings 1. Water Supply The City of Lodi overlies a portion of the Eastern San Joaquin Groundwater Basin that has been declared "Overdrafted". Currently, the City of Lodi relies solely on groundwater wells to provide its municipal supply of potable water. As part of the UWMP, a revised safe yield value of 15,000 afa is used to determine the sustainable ground water supply. In addition to ground water, the City has purchased 6,000 afa from the Woodbridge Irrigation District (WID). A graphic representation of Lodi's supply and demand condition is presented in Exhibit A. The 2005 UWMP also includes 7,200 afa of recycled water as a firm supply of water available for future use by the City. While this component reflects a significant portion of the City's overall supply portfolio, the infrastructure and demand has not yet been realized. Finding: The City's overall firm water supply is expected to increase to 21,000 afa by the year 2030, excluding recycled water sources. The City plans to negotiate with WID to purchase additional surface water in the future. 2. Water Demand The total water production for the City of Lodi in 2005 is 17,300 acre-feet. The demand projections include a 1.5% annual population growth coupled with an estimated reduction in per capital use of 15% due to conservation encouraged by installing residential water meters. Finding: Lodi's annual water demand is projected to slightly exceed 21,000 afa by the year 2030. Additional surface and/or recycled water supplies will be needed to meet the projected demand. Exhibit A reflects the supply vs. demand but does not include any recycled water. 3. Demand Management Measures Demand Management Measures (DMMs) are requirements in the UWMP Act and are intended to identify ways that communities can reduce water consumption. DMMs are measures taken to reduce the overall water demand within a service area and include such items as water surveys, residential plumbing retrofit programs, water system audits/leak detection, etc. Finding: The City is currently in compliance with or in the process of complying with the UWMP Act on 9 of 13 applicable DMMs. 4. Water Supply Reliability This section evaluates the reliability associated with the City's surface, ground and recycled water supplies. The analysis takes into account climatic changes that may occur up to the UWMP planning horizon of 2030. Finding: Even with surface water curtailments during multiple dry years, the City's water supply is relatively consistent and would not be significantly impacted from environmental, legal and/or climatic factors. 5. Water Quality Impacts on Water Supply This section assesses the potential for impacts to the City's water supply due to water quality and notes that current groundwater treatment is being performed on DBCP. The section also briefly discusses pending measures to mitigate the City's PCE/TCE groundwater contamination. J:\WaterACC._UWMP_SurfaceWater-doe 21312006 Presentation on 2005 Urban Water Management Plan, Update on Surface Water Treatment Plant and Proposed Recycled Water Master Plan February i, 2006 (Shirtsleeve Session) Page 3 Finding: The assessment reflects that the City is well equipped to handle those constituents present in its supply sources. 6. Wastewater and Recycled Water Califomia Water Code requires the UWMP to provide information on recycled water and its potential for use as a water source. This section identifies this potential by discussing the City's wastewater treatment plant processes, other agency coordination and projected wastewater disposal volumes. Finding: The report identifies that by 2025, the City may need to rely on a portion of the available recycled water to supplement future groundwater and surface water supplies. Staff proposes to initiate a Recycled Water Master Plan Study in the near future and fully anticipates that recycled water will be utilized prior to 2025. T. Supply and Demand Comparison California Water Code requires the UWMP to address projected water supply during normal, single dry and multiple dry years and compare that supply with project demands. Finding: The assessment indicates the City will have sufficient water supply to meet all existing and projected water demands during normal, single dry and multiple dry years. 8. Water Shortage Contingency Plan The California Water Code requires a water shortage contingency plan to identify the stages of action needed to address a water supply shortage of varying degrees of severity, as well as discussion regarding the financial impacts that may be realized by the City during a water shortage. Finding: The City has the required Water Shortage Contingency Plan in place. 9. Adoption and Implementation of the UWMP The UWMP will be made available to the public as of February 15, 2006. At that time, the public review period will be opened and Council will be requested to set the Public Hearing date for March 1, 2006. Council will also be requested to approve the 2005 UWMP Update during the March 1, 2006, meeting. During the review period, copies of the UWMP will be made available to the public via the City's website, as well as the Lodi Public Library. Copies will also be sent to the Lodi News Sentinel and other agencies as requested. Surface Water Program On November 1, 2005, staff met with the City Council at a Shirtsleeve Session: to present the recommended Surface Water Action Plan. Alternatives presented to the Council included "Treat and Drink" or "groundwater recharge. On an interim basis, the alternatives presented included "selling the water" and "partnering with other agencies on a joint groundwater recharge program". At the time, staff was requested to return to Council with additional cost and implementation information. 'I. "Treat and Drink" Staff recommends the "Treat and Drink" option based upon the following: a. A conjunctive use water program that includes treating and distributing Mokelumne River water will reduce salt concentrations in the City's wastewater discharge. Allowable salt levels in the discharges to the Delta are expected to be lowered in the future by the Regional Board. J:%Water\CC UWMP SurfaceWater.doc 2/3/2006 Presentation on 2005 Urban Water Management Plan, Update on Surface Water Treatment Plant and Proposed Recycled Water Master Plan February 7, 2006 (Shirtsleeve Session) Page 4 b. Treating and distributing surface water will provide the highest percentage of in lieu recharge to the groundwater resource that underlies the City. c. Capital costs for the facilities will be paid by new development. Capital costs for the construction of a water treatment, storage, and transmission facilities are now estimated to be in the range of $20 million to $25 million. Staff research has narrowed the mechanical treatment options to ultrafiltration through consultations with design professionals and visitations to three new ultrafiltration water plants. The water treatment facilities will be designed to fully implement the current annual allotment of WID surface water and include provisions for future expansion. The facilities will treat and distribute at least 6,000 acre-feet per year when brought on line. The City cost to deliver treated surface water to its customers would be greater than the current ground water system. Additional study is required to establish the rate impacts associated with the "Treat and Drink" option. Implementation Timeline A preliminary timeline for construction of the water treatment facilities has been prepared and it shows that, if the process begins July 1, the treatment and transmission facilities could be operational within four years. The timeline is presented in Exhibit B. Decision Tree Several decisions will be required by the City Council in the future to implement the final plan for using the WID surface water supply. A preliminary decision tree, based upon the "Treat and Drink" alternative, has been prepared that provides the City Council a summary of the key steps in the program. A copy is attached as Exhibit C. Woodbridge Irrigation District Agreement Amendment A letter has been presented to the WID General Manager requesting four additional years of "banking" be included in the Water Purchase Agreement. The details of this amendment are in discussion at the staff level and will be brought to the City Council in the future for discussion and approval. We believe we will be able to work out some arrangement that will prevent Lodi from losing the water. 2. "Groundwater Recharge" Staff recommends that interim groundwater recharge be considered in the near term to provide some beneficial use of the City's captured storm water to the Region during development of the final water facilities. Meetings have occurred with Stockton East Water District, North San Joaquin Water Conservation District and Woodbridge Irrigation District regarding the implementation of a pilot -scale recharge basin adjacent to Micke Grove Park. The project is partially funded by a Corps of Engineers Grant and is expected to begin in March 2006. Use of the WID water for recharge will have minimal cost at the Micke Grove location but the actual benefit to City of Lodi residents will also be minimal. It is staff's recommendation that we continue participating in recharge project discussions, and that Lodi receives some reimbursement for the water. 3. "Water Sale" On September 7, 2006, City Council authorized retaining the services of West Yost & Associates to investigate the possibility of short-term water sales to users within the region and State. Results of initial discussions with water purveyors have not been encouraging. We will be receiving a letter report from West Yost & Associates which will be provided to the Council. Staff does not recommend pursuing this alternative. JAWaterlCC UWMP SurfaceWater.doc 2/3/2006 Presentation on 2005 Urban Water Management Plan, Update on Surface Water Treatment Plant and Proposed Recycled Water Master Plan February 7, 2006 (Shirtsleeve Session) Page 5 Recycled Water Prouram The Urban Water Management Plan represents that recycled water will be a component of the Lodi Water Supply Master Plan. The UWMP forecasts the requirements for recycled water or another source between 2018 and 2029. This time frame would depend on actual growth and water conservation (metering) results. On February 1, 2006, the Council approved the application to the State for a Recycled Water Planning Grant. In the near future, the Council will be asked to approve the consultant's services agreement to prepare a Lodi Recycled Water Master Plan (RWMP). The key elements of that scope of services are provided below and the scoping document is attached as Exhibit D. 1. Market Assessment for recycled water demand 2. Alternates to using recycled water and evaluations thereof 3. Interim usage of W I D water supply 4. Community outreach 5. Preparation of the RWMP As part of the City of Lodi, City of Stockton Settlement Agreement for the White Slough Sphere of Influence, those parties agreed to evaluate a Proposed Water Reuse Project. This study will evaluate the feasibility of irrigating public and private landscaping in newly -constructed areas that lie between Lodi and Stockton. The process to select the consultant to perform this study has been initiated at the staff level. FISCAL IMPACT: Not applicable at this time. FUNDING AVAILABLE: Not applicable. Richard C. Prima, Jr. Public Works Director Prepared Charles Swimley, Senior Civil Engineer RCPICES/pmf Attachments ,i:IWaterlCC UWMP SurfaceWater.doc 2/3/2006