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HomeMy WebLinkAboutCity of Huntington Beach 2016 Water Master Plan Update 10/17/2016 City of Huntington 2016 WATER MASTER PLAN Importance of Water System F Wells yy, Reservoir Pump Pipes Hydrants Meters Stations rr".r. 3 Foods Health Economy r Recreation Aesthetic 1 Fire Future Vital Servic Protection COMMUNICATION Meeting Date: A? Agenda bm No: 10/17/2016 Cost To Replace Our Water Infrastru 4 Reservoirs/Tank 10 Wells (8 Acti 3 Zone 1 Boosters 50 ry, � . 2 Zone 2 Boosters 110M1 , 3 Import Connections 611 Miles of Large & 5 M Distribution Mains :.. 900 M 20 Mi ..........mum...NNNN.N...I'mm. Cost To Replace Our Water Infrastructure? (Con't) 53,091 � Yard, Trucks, Meter Connection Equipment, etc 220 M �. rAil 20 M 5,801 17 Public Hydrants Over $ 1 .4 Billion - . 29 M 2 10/17/2016 Water Master Plan Need and Purpos New Reservoirs & New i Main Replacemen Booster Stations Wells s and Extensions s ,q s Treatment and Corrosion Control Transmission Mai Improvements (Multi-Phases) Replacement and N Maintain a Reliable - Financi Water Infrastructure Examples of Aging Infrastructur Lost 2 of 10 Wells OC-44 Leak Repair Sunset Beach Main 405 Fwy Extensions & Replacements Widening Old AC & Cast Iron 72,01, Water Odor Pipe Replacement r Treatment WMP Addresses These In 3 10/17/2016 What Topics are Covered in the Water Mas...> 1 . City Characteristics 2. Water Demand 3. Supply & and Projected Growth Reliability 4. Facilities 5. Storage & 6. Hydraulic & Operation Emergency Supply Modeling 3 : What Topics are Covered in the Water Master Plan . 7. Capital Improvement 8. Asset Program Management yp^ ------------------------------- 4 10/17/2016 Highlight of Completed WMP Projects Si Corrosion Control 10 Miles Chlorine Tank Containm of Transmission Main -$6.7M VAt Well 6, 7, 9, 10 & 13 -$1 New 3.5 Miles of OC-9 V Downtown Cast Iron Main Transmission Main -$7.8M Replacement 7 Miles -$12.1M Overmyer Booster/ Reservoir V Water Well 12 -$2.5M Renovation 20 MG-$7.5M Cy► New Springdale V Southeast Reservoir Reservoir 9 MG-$7M Site Acquired 4.5 Acres-$0.4 Total Value of$63M WMP Project Categories & Costs (7 Existing from 2012 WMP + 37 New from 2016 WMP = 44 Project Production Main Distribution Replacement 14fi 10 7 - Corrosion Control Security , Studies 3 7 -f 3 44 Projects/Programs at a value of $ 128. 5 10/17/2016 Immediate Needs The 2016 Water Master Plan Update Identifies the Following Projects & Programs as Highest Production Main Distribution Replacement 5 5 2 Corrosion Control yzr Security R 14 Immediate Needs $6.6 Water Master Plan Fund Balance $21 .5 M Remaining Millions �P Pm $6.6 M - - - - - - - - - New $28.1 M _-O Projects (Cu Total Cost F 6 10/17/2016 Next Steps The Water Master Plan will be on the Agenda fo the November 7th council meeting with a staff recommendation for adoption Future Water Master P13n Fund Nee $154.4 M Projected Deficit Over 20 Years Millions syr $28.1 M ; (Current) 7 10/17/2016 If Water Master Plan is Adopte Staff will return in the future with a Financial Pla evaluate several funding scenarios for future projects identified in the Water Master Plan Questions? ........... i ,� �i IVY sf9i�f•,15'i 1 8 10/17/2016 o INTENTIONALLY LEFT BLANK o SLIDES AFTER THIS ARE FOR Q&A ONLY "MUM= III Regional Bill Comparison(3/4"Meter)-14 HCF(SUMMER MONTH) $100 -- m Cepital 5urcnarge $93.77 f'r ntr('fargP(i! 'rrwtPr)- .5F4.71 CommodiWchargefor141ICC S778s 5T5.4s $80 — —Average 555,77 $6973 570 .. .. .. ......... ......... .. ............ HB is 2"d Lowest s64�9 �'x3 560 W—Existing-Rate— — Ssa�s Seo.ca — — $5O $SO 15 $50 43 .���� $45 29 <46.25 $4 AS.._ __ .. $40 $.36 98 $399T 549 OS $42.Z5 $43.08 536,22 536 :� ...... "� .... Sao 35% -34% -3396 -28% -2S% -24% -23% -19% -17% 41% -10% -10% 5% 4W 15% U% 2S% 40% 43% 52°"5 ss% N pa ��, c�bc `ib� y�,t yaa ��.A' �# 'p.m" y:T two 'a 9 10/17/2016 Summary of Projects from 2012 �Mwel 1d wa Deferred Beach Blvd Southeast Reservoir/ Pipeline f Pipeline Booster Station Corrosion & & II Fire Protection Well 13 Permanent Improvements Wellhead Cast Iron Southeast Main Well Transmission Main Replacement Replacement & Staff Recommendation to Council Adopt the 2016 Water Master Plan Projects to be implemented by using Water Master Plan Funds. No Council action is requested at this time to re- instate or implement a funding mechanism to replenish the Water Master Plan Fund. 10 10/17/2016 016 WMP Projects — Production -12 Wetli3 Permanent Wellhead. S2;e00,000 13 SoutheastRes.&BoosterPS $19,245,000 NA Well Replacement $4,250,000 as Peck Booster Dual Drive and Well 7 Security $1, 00,00 24 Well#9 Hydrogen Sulfide Odor Treatment $a, 00,00 27 New Well#14 by McFadden Avenue and Gothard Street $ ,000,00' 29 New Well#15 in Ex-Navy Easement by Edwards Street $ ,000,000 o New Well#16 in Ex-Navy Easement by Goldenwest Street $ ,000,00 39 Water Well#6 Hydrogen Sulfide Odor and Color Treatment $ ,000,00 o Water Well#8 Hydrogen Sulfide Odor and Color'Treatment $ ,000,000 i Talbert Lake Irrigation Project $7 0,000 o Water Production System Improvements $2,200,000 6 Overmyer Booster Station Dual Drive $2,000,00 7 Peck Reservoir Roof Rel lacement $2,000,000 Tot $59,245,000 016 WMP Projects — Main Replacement OC-44 San Diego Creek Crossing Rehab via Pipeline'Sliplining-Phase I(City portion 21 only) $I,o ,00 OCWB OC-35'33"Pipe Replacement by Westminster Blvd and Springdale Street a (City portion only) $1,78 ,00 Aging Pipe Replacements-Primarily Asbestos Cement Pipe(25 miles,or approx.5%Of a total in the City) $ z, 00,00 33 Sunset Beach Water Main Replacement Phase III $2,000,00 34 8"Pipe Replacement in Admiralty Bride $100,00 35 8"Pipe Replacement in Humboldt Bride $ioo;oo 6 OC- aa"Pipe Replacement by I-4o5 and Newland(Expecting OCTA Pays) $ 12"Pipe in Replacement In.Bridge by Beach'.Blvd and Edinger Avenue.(Expecting 37 OCTA Pays) $ 8 8"Pipe in Replacement in Bridge by Sugar Avenue and McFadden Avenue $ 7 ,00 OC-44 San Diego Creek Crossing Rehab Pipeline Scour Protection-Phase II(City 55 portion only) $662, o Tot $ 8,6 7, oo 11 10/17/2016 016 WMP Projects — Distribution z Beach Blvd.Pipeline Im s. 5 00,000 14 Southeast Res, Trans.Main sy,858,000 i4A New Connection-Overmyer to SE TM .55,9 q, o0 16 Fire Protection Improvements 5300,000 23 Bolsa Chica 8"Water Main Extension $200,00 28 JEx-Navy Easement Well Collection Pipeline(i.3 miles a "to o"pipe) $ ,000,00 48 [Water Distribution Improvements $2,200,00 Tot $1 ,207, 00 016 WMP Projects — Corrosion Control 49 Water System Corrosion Control $1,100,00 53 8.6 Miles OC-44 Rehabilitation and Corrosion Control(City portion only) OCWB 5.3 Miles OC-9 and 6.o Miles OC-35 Rehabilitation and Corrosion Control 54 _J(City portion only) $ ,412, 00 Tot4 $8,6 12 10/17/2016 016 WMP Projects — Securities i Water Security Improvements at Peck and Well#1 $600,00 43 Water Security Improvements at Well# $i o,00 44 Water Security Improvements at Well#6 $i o,000 45 Water Security Improvements at Well#8 $i o,000 6 Water Security Improvements at Well# $i o,00 47 Water Security Improvements at Well#io $i o,00 8 Water Facilities Security Improvements $ oo,00 Total $1,8 0,000 016 WMP Projects — Engineering Study z Groundwater Master Plan $i o,000 i Water Master Plan and Financial Plan Update(Next 5 Year Cycle) $200,000 z Urban Water Management Plan(Next 5 Year Cycle) $200,000 Tot $ o,000 13 16 - r7 - '14 CityHuntingtonof Beach 2016 Water Master Plan Update f { x 6 3 s's 3.� r! r �V P M A s g, CITY OF HUNTINGTON BEACH Water Master Plan Update Executive Summary EXECUTIVE SUMMARY ES.1 Purpose This report updates the City's water master plan, which was last updated in December 2012. As various parts of the water system infrastructure age, they will need to be rehabilitated and/or replaced through a systematic Capital Improvement Program. The primary purpose of the master plan is to identify the capital improvement projects needed over the next 20 years, consistent with typical asset management practices to maintain a healthy water infrastructure. The Water Master Plan evaluates the water system performance and facilities for the planning period 2015 through 2035, consistent with the City's 2015 Urban Water Management Plan recently adopted by the City Council on June 20, 2016, subsequently submitted for review and approval by the State Department of Water Resources. The project includes the evaluation of City growth, water demands, water supply and reliability, water quality, water storage, emergency water supply, energy use and recovery, water system distribution, and most importantly capital improvement requirements over the next 20 years. Following the adoption of the Water Master Plan by City Council, staff will utilize existing Water Master Plan Funds on identified projects. The next step is to prepare the Water Financial Plan with a recommendation to replenish/re-instate the Water Master Plan Fund for on-going improvement efforts. The Water Financial Plan evaluates the total 20 year projected costs, scheduling and funding of projects remaining to be paid for in the City's Water Master Plan Capital Improvement Program (CIP). The Water Financial Plan will also evaluate the scenario whereby the potential desalination project is implemented and this source of supply becomes available to the City and other agencies in the area. ES.2 City Characteristics and Projected Growth Land use for buildout of the area within the City of Huntington Beach water service area boundaries, which includes the community of Sunset Beach, is consistent with the City's current General Plan. The City completed the 2014 Existing Land Use Technical Report, but it has not yet been adopted by the City Council. This report includes statistics on existing land use and can be found at http://www.hbthenextwave.org/wp- content/uploads/Revised-Land-Use-121814.pdf. The City's population is projected to increase 4.4% from 198,429 in 2015 to 207,182 in 2040. Historical and projected water service area population for the City's 2015 Urban Water Management Plan (UWMP) and this master plan was based on the Center for Demographic Research(CDR) at California State University Fullerton 2015 data adjusted for the Downtown and Beach and Edinger Areas. PSOMAS ES-1 October 2016 CITY OF HUNTINGTON BEACH Water Master Plan Update Executive Summary ES.3 Water Demand City water demand has decreased over the past decade even though development has occurred and the City's population has increased during this time. City potable water supply for the 10 water years 2005/06 through 2014/2015 averaged 30,520 acre-feet per year (AFY). Note that a water year is July through June, whereas the City's fiscal year runs October through September. Based on the City's 2005 Water Master Plan, unaccounted-for water, which is the difference between water supply and water consumption, averaged 6.4%. During the six year period from 2009/10 to 2014/15, unaccounted-for water has averaged 5.6%. In 1995/96 unaccounted-for water was 9.9% and has been reduced due to a leak detection survey and comprehensive program of water main replacements undertaken by the City. The current rate of unaccounted-for water is commendable for a system the size, age, and complexity of the City's. Existing Water Demand Per the 2015 UWMP, 2014/15 demand, including unaccounted-for water, was determined to represent average water demand at 27,996 AFY (25.0 million gallons per day (MGD)) or 17,360 gallons per minute (gpm). Projected Water Demand For projecting future average water use in the 2015 UWMP, development and population projections were from the 2015 data by the CDR. Using these projections, the 2040 water demand is projected to be 30,396 AFY or approximately 30.9 MGD, 8.6% higher than the assumed 2015 normal year demand of 27,996 AFY. This increased water demand equates to an annual water demand growth of approximately 0.33% per year, compounded annually. Maximum Day Demand (MDD) is the highest daily demand over the year and is important in water master planning in that an agency must have an adequate supply capacity to meet this MDD from supply sources. Demands above the MDD including peak hour demands and fire flows are met from storage facilities such as reservoirs. The City's MDD is generated using a factor of 1.8 times the average annual demand based on analysis of existing historical use patterns. ESA Water Supply and Reliability City water supply has historically come from groundwater production and from supplemental, treated, imported water purchased from Municipal Water District of Orange County (MWDOC), which is a member agency of the Metropolitan Water District of Southern California(MWD). As a member agency of Orange County Water District (OCWD), the City is entitled to produce groundwater from the Basin. The Basin, which is managed by OCWD, is unadjudicated. The City and other Basin producers pay a Replenishment Assessment (RA) to OCWD for all groundwater produced up to a percentage of the producer's total water supplies used to meet demands. This percentage is called the Basin Production PSOMAS ES-2 October 2016 CITY OF HUNTINGTON BEACH Water Master Plan Update Executive Summary Percentage (BPP), which is set uniformly for all producers annually by OCWD based on Basin conditions and long-term projections. For FY 2016/17, OCWD set the BPP at 75%, and also set the Replenishment Assessment (RA) at$402 per acre-foot. In addition to the RA, OCWD charges a Basin Equity Assessment (BEA) for pumping in excess of the BPP, which is basically a penalty to help maintain the Basin at projected levels. The BEA, which is set at a rate of$548 per acre-foot for FY 2016/17, essentially equates the cost of groundwater pumped over and above the BPP to the rate charged for imported water from MWDOC. The BEA rate will vary slightly between member agencies of OCWD, as the rate is adjusted based on each member agency's groundwater pumping costs. It benefits the City to use groundwater up to the maximum allowable BPP because groundwater is less expensive and more reliable than imported water. The City supplements groundwater with treated, imported water from MWDOC at the 2016/17 rate of$961/acre-foot exclusive of connection charges, readiness to serve charges, and other fixed fees, while the groundwater rate for 2016/17 is only $402/acre-foot. Both imported water and groundwater rates shown above are costs to purchase water, and does not including any operating expense such as energy, chemical, well maintenance and other costs to maintain production facilities (i.e. OCWD's FY 2016/17 estimate of energy cost to extract water from the ground is $76/acre-foot for Huntington Beach). The City's water supply has averaged 67% groundwater pumped and 33% imported water purchases over the recent six year period (2009/10 to 2014/15). It should be noted, however, that the City participates in the In-Lieu or Cyclic Storage Program offered by OCWD and MWD, when available. This is a groundwater program that refills the Basin by avoiding pumping from the Basin, and is usually offered in the wetter years and in the lower demand period of October through April. In addition, OCWD also periodically offers the City water through the Coastal Pumping Transfer Program (CPTP), similar to the In-Lieu program. The City has a current well supply capacity of approximately 25,300 gpm from eight existing wells. However, the normal operating capacity of these existing wells is approximately 16,600 gpm or 66% of total design capacity. The reason the normal operating capacity is less than total design capacity is that some of these wells are not operated at 100% of capacity in consideration of such factors as groundwater level, water quality, availability of in-lieu water, etc. Additionally, the life of the wells and associated supply equipment can be prolonged when operating at less than full capacity. However, current maximum operating capacity is nearing the desirable normal operating threshold, and therefore provides little redundancy for well failures. The City is fortunate to overly the Orange County Groundwater Basin (Basin), which has been able to sustain BPPs from the mid-60s to 70 percent throughout past years. During preparation of the City's 2015 UWMP, Orange County Water District who manages the Basin conservatively projected that a BPP of 75 percent could be maintained throughout the next twenty-plus years. This means that the City can reasonably count on at least 75 PSOMAS ES-3 October 2016 CITY OF HUNTINGTON BEACH Water Master Plan Update Executive Summary percent of its projected demands being met by local groundwater produced from City wells overlying the Basin. An analysis of the City's current wells' ability to meet a BPP of 75% in 2015 and 2035 (through the 20-year planning period) was conducted using normal operating capacities of the wells and historical demand patterns by month and the result is that without running the wells beyond the normal operating capacity for long periods of time in the summer months there could be reliability issues if one or more wells are down for any reason. If this occurred, the City could still meet these maximum monthly demands by utilizing additional quantities of imported water and could potentially still catch up to the BPP by pumping more in the winter months, but this will have a significant financial impact to the City. However, it is recommended that a well study be conducted to analyze this in more detail as well as evaluate the condition of all existing wells and their remaining useful life, potential water quality issues that could relate to high chloride levels in the vicinity of three of the City's wells near the Peck/Springdale Reservoir complex, and the potential need for replacement wells or new wells at new sites in the future. Illustrated on Figure ES-1 below, a total of 15 wells have been drilled since 1956, of which eight currently are still active, with seven being either inactive or destroyed. The average age of active wells compared to inactive wells is 36 years versus 30 years. Therefore, active wells have been operating, on average, 6 years beyond those that have failed. This is an important indicator that the City's operating water wells are nearing their useful lives and planning for future replacement is necessary and inevitable. Figure ES-1 Comparison of Active & Inactive Water Wells 70 - Age of Active Wells lillillillillAge of Non Active Wells 60 --Average Age of Active Wells —Average Age of Non Active Wells 50 - .� __._ _.- —. .__.....------ v 40 — - -- ——— -- ----------- >- 30 20 /y y 10 � DYKE Well Well Well Well Well Well Well Well Well Well Well € Well Well Well No.1 ' No.2 No.31 No.4 No.5 - No.6 No.7 No.8 No.9 No. No.11 No.3A No.13 j No.12 P S 0 M A S ES-4 October 2016 CITY OF HUNTINGTON BEACH Water Master Plan Update Executive Summary The above findings indicate a high risk of a multi-year financial impact resulting from being unable to meet the BPP, especially in a scenario of sudden loss of a water well. This is compounded by the fact that it would take between 3 to 4 years to design and construct a new replacement well (or longer if land for a new well site must first be acquired). The financial impact would be the result of having to purchase a much costly imported water supply, as that can add an unanticipated operating cost of around $2.4 million if prolonged for one year, or nearly $10 million over the 4 years it could take to design and construct a new well. In other words, failure to meet BPP for 4 years is equivalent to the design and construction cost of two new wells. For details on this analysis, see Section 3.3.9. It is recommended that a well study be conducted to analyze this in more detail as well as evaluate the condition of all existing wells and their remaining useful life, potential water quality issues that could relate to high chloride levels in the vicinity of three of the City's wells near the Peck/Springdale Reservoir complex, and the potential need for replacement wells or new wells at new sites in the future. With the potential addition of the proposed seawater desalination plant at the AES Huntington Beach Generating Station property and the ability of the City to draw supply from this source, the overall water supply reliability of the City would be enhanced. However, this will not increase City's ability to draw groundwater from the Basin, which appears to be a potential future need. However, based on the City's 2015 UWMP and this water master plan update, the City's existing water supply sources are deemed adequate and reliable into the future to at least 2035, even without considering the potential desalination project. Water Quality The City's water supply, made up of groundwater and imported treated surface water, consistently meets or exceeds all State and federal potable water quality standards. Recently adopted and proposed federal and State water quality regulations on the horizon including a new lower maximum contaminant level (MCL) for arsenic, an upgraded rule for groundwater disinfection, a MCL for radon, new monitoring requirements for disinfectant byproducts, and a MCL for hexavalent chromium are not expected to affect the City's ability to meet future water quality standards based on historic water quality parameters of the City's supply sources and the City's current disinfection procedures. However, the City will need to monitor proposed radon regulation with regard to which radon mitigation program the State opts to follow. ES.5 Facilities and Operation The City's existing potable water system facilities and pipelines are shown on Figure 4-1. The City's existing storage system consists of four reservoirs (Overmyer, Peck, Springdale and Edwards Hill), all located in the lower pressure zone (Zone 1), with a combined storage capacity of 55.0 million gallons (MG). The Peck and Springdale reservoirs are located at the same site. Booster stations are located at the three reservoir sites to pump water from the reservoirs into the distribution system. PSOMAS ES-5 October 2016 CITY OF HUNTINGTON BEACH Water Master Plan Update Executive Summary The City's service area is composed of two pressure zones: Zone 1 and Zone 2. Ground elevations in Zone I vary between 5 feet below and 80 feet above sea level. The Overmyer, Peck and Edwards Hill booster pump stations boost water from their respective reservoirs into the Zone 1 distribution system. Zone 2 is the 800 acre Reservoir Hill area that rises to an elevation of 109 feet. The Reservoir Hill Booster Pump Station, which is located at the Overmyer site, boosts water from Zone 1 into Zone 2. The Edwards Hill Booster Pump Station also has Zone 2 pumps. Neither of the Zone 2 booster pump stations have a direct connection to pump from a storage reservoir. In addition to the four booster pump stations, the City's existing potable water distribution system includes eight currently active well facilities that pump directly into the distribution system (with the exception that Well 4 pumps directly into Peck Reservoir); three imported water service connections; four emergency water connections with neighboring public water systems; and 631 miles of transmission and distribution piping ranging in size from 4 inches to 42 inches in diameter. ES.6 Storage and Emergency Supply The City currently has 55.0 MG of storage capacity located at the Overmyer, Peck, Springdale and Edwards Hill reservoirs. Booster Stations are located at the Overmyer, Peck/Springdale, and Edwards Hill sites to pump water from the reservoirs into the Zone 1 distribution system at appropriate pressures. The Reservoir Hill Booster Pump Station, which is located at the Overmyer site, boosts water from Zone 1 into Zone 2. Zone 2 does not have the capability to directly pump from a storage reservoir. In addition to pumping to Zone 1,the Edwards Hill Booster Pump Station also boosts water into Zone 2. As recommended in the City's last three water master plans, a 10 MG storage reservoir, the Southeast Reservoir, and an 11,000 gpm booster pump station are proposed in the southeast quadrant of the City at the AES property to ensure water supply reliability and storage for the area south of the Newport-Inglewood Fault and south of Bolsa Chica. Currently there are no storage reservoirs or supply sources located south of the fault and an earthquake on this fault could potentially sever water transmission and distribution pipelines crossing the fault leaving the southern portion of the City without potable water. With construction of this Southeast Reservoir and Booster Pump Station, the City will have 65.0 MG of storage capacity. Along with the potential construction of the desalination plant, this project will also include the construction of a reservoir and booster pumping station on the AES site, which could provide the needed reliability south of the fault and allay the requirement for the City to construct these facilities. The City's existing storage volume is more than adequate for all operational and the highest fire flow demand requirements in either of the two pressure zones. Emergency storage is calculated after required operational and fire flow volumes are depleted. Using this methodology, the City has 1.5 days of emergency storage volume at existing demands. With the addition of the 10.0 MG Southeast Reservoir, the City would have 1.9 days of existing demand in storage. These emergency storage volumes place the City approximately in the middle of 25 water agencies surveyed as shown on Table 5-3. PSOMAS ES-6 October 2016 CITY OF HUNTINGTON BEACH Water Master Plan Update Executive Summary Backup water supply can augment storage during certain specific emergency water supply scenarios. In this regard, several different emergency storage/supply scenarios were evaluated including a complete loss of the City's imported water supply coupled with a 7-day electrical power outage. Likely causes for an imported water outage or reduction in supply could be a break in an imported water transmission main or mains or an outage at a water treatment plant caused by an earthquake or other event. It was determined that the City has sufficient emergency storage, groundwater supply, and emergency power to withstand an imported water outage of 30 days or longer coupled with an electric power outage lasting the first 7 days of this emergency scenario. Another possible emergency scenario is a complete loss or reduction in the City's groundwater supply from the Orange County Groundwater Basin, conceivably as a result of Basin groundwater contamination. It was determined that the City has sufficient emergency storage and imported water supply capacity to withstand this emergency scenario as well. ES.7 Water Transmission and Distribution System Modeling In the 2012 Water Master Plan Update, the hydraulic model provided by the City staff was validated, and updated with analysis of projected future 2035 demand conditions. However, since the last master plan update, annual demands have actually decreased with population increase,primarily due to a steady trend of water reduction through aggressive water conservative efforts. Therefore, no updates were made to this Chapter 6 from the 2012 Water Master Plan. The projected future 2035 demand from the 2012 Water Master Plan was 34,657 AFY, while the 2015 UWMP is projecting future 2040 demand at 30,396 AFY. In addition, no major physical pipeline or supply improvements have been made since 2012, and any proposed improvements from "New Projects" listed in Table 7- 3 would certainly further enhance the water system hydraulically. In the future, as major improvements are constructed, the City's water engineering team will update the model accordingly. The City's existing hydraulic network model was originally created by the City in 1998 to analyze the City water transmission and distribution system performance. This model has been updated and refined over the years. In the 2012 Water Master Plan, the latest model was provided by City staff at the outset of the project. The model is in WaterCAD format and is compatible with Water GEMS modeling software by Bentley Systems. The model is used routinely by City staff and contains numerous scenarios. It contains all pipes in the existing water distribution system, and several demand allocations including those representing existing and estimated future demand conditions for average day, maximum day, and peak hour demands. Existing demands were first revised to correspond to the reduced demands experienced over the past few years, as consistent with the City's 2010 UWMP. Then a series of validation analyses were conducted to verify that the model adequately simulated observed operating conditions within the distribution system. PSOMAS ES-7 October 2016 CITY OF HUNTINGTON BEACH Water Master Plan Update Executive Summary Hydraulic analyses conducted for this project used the existing system model to create a series of extended period simulation (EPS) analyses using a representative typical week of diurnal curves from June 2007. These demand curves were then uniformly increased to reflect conditions that could be expected during a week of maximum demand. Hydraulic analyses were conducted under existing and future year 2035 demand conditions. These hydraulic analyses were then used to confirm or develop sizing on capital improvements and develop system optimization recommendations. ES.8 Capital Improvement Program A financing plan was adopted in 1995 to pay for water system project improvements identified in that master plan as well as projects remaining from the 1988 Water Master Plan. The water master plan capital improvement program was last updated through the 2012 Water Master Plan and this plan updates those capital projects based on current and projected system demands, more refined modeling techniques, potential alternative capital projects to the Southeast Reservoir and Booster Station project, the status of the original recommended capital improvement program, and updated cost information. Remaining Water Master Plan Projects Water master plan projects that remain to be constructed from the 2012 Water Master Plan are listed below in Table ES-1, identified by their project numbering from previous 1995, 2000, 2005, and 2012 water master plans. Projects for which money has been encumbered prior to May 30, 2012 are not included as a remaining master plan project and those encumbered funds are therefore not included as available. The estimated costs for the remaining seven (7) capital projects described above, in 2016 dollars, are summarized along with their year of anticipated design and construction on Table ES-1. Projects already complete or with funds encumbered prior to March 31, 2016 are not listed. New Water Master Plan Projects Thirty Seven (37) new Water Master Plan projects and annual programs have been identified below, numbered from No. 21 to No. 57. These new projects and remaining projects above will all be funded by available Water Master Plan funds, and will be prioritized and implemented in a reasonable manner in accordance with need and funding ability. The estimated costs for the new capital projects described below, in November 2015 dollars, are summarized along with their year of anticipated design and construction on Table ES-2. This preliminary design and construction phasing can be adjusted as needed following the financial plan analysis. PSOMAS ES-8 October 2016 CITY OF HUNTINGTON BEACH Water Master Plan Update Executive Summary Table ES-1 Estimated Costs for Remaining 2012 Master Plan Projects Beach Blvd. Pipeline ImprovementSd NA - 2016 $ 700,000 700,000 Distribution 12 Well 13 Permanent Wellhead 2022 $ 200,000 2023 $ 1,800,000 $2,000,000 Production 13 Southeast Res.& Booster Pump Sta. 2033 $1,597,000 2034-35 $ 17,648,000 $19,245,000 Production 14 Southeast Res.Trans. Main 2033 $ 503,000 2034-35 $ 5,355,000 $ 5,858,000 Distribution 14A New Connection-Overmyer to SE TM 2033 $ 540,900 2034-35 $ 5,409,000 $5,949,900 Distribution 1.75 mi.36"to 42"in Huntington St. $ 500,300 $ 5,003,000 Interconnects P Overmyer Reservoir $ 25,600 $ 256,000 PRVs @ SE Res. &AtIontolDwntn Lp $ 15,000 $ 150,000 16 Fire Protection [mprovernents d NA - 2018 -$ 300,000 $ 300,000 Distribution NA Well 1 Replacement NA - 2016-17 $ 4,250,000 $ 4,250,000 Replacement Total $2,840,900, $35,462,000 $38,302,900 a)2016 costs estimate.Escalation of design and construction costs will be accounted for in Financial Plan. b)Design Costs range from 5 to 15%of construction costs,depending on project size and complexity and include preliminary design,final design,potholing, geotechn[cal,survey,and bidding services. c)Construction Costs include construction management and City project management.Construction management costs range from 2.5 to 5%of construction costs for shop drawings,RFis,field visits,etc.,but do not include inspection services.City project management costs range from 5 to 9%of construction costs and may include inspection services depending on the project type. d)Design already complete or costs encumbered. P S O M A S ES-9 October 2016 CITY OF HUNTINGTON BEACH Water Master Plan Update Executive Summary Table ES-2 Estimated Costs for New Water Master Plan Projects 21. <: OC-44 Sliplining 30"at Creek Crossing' NA - 2017 $ 1,035,000 $ 1,035,000 Replacement 22 '.. Peck Reservoir Dual Drive&Well 7 Security° NA - 2017 $ 1,500,000 $ 1,500,000 Production 23 Bolsa Chica 8"Water Main Extension' NA - 2018 $ 200,000 $ 200,000 Distribution 24 Well 9 H2S Odor Treatment' NA - 2017-18 $ 2,300,000 $ 2,300,000 Production 25 WOCWB OC-35 Relocate 33"for 1-405 Widening 2017 $ 210,000 2019-19 $ 1,575,000 $ 1,785,000 Replacement r26 New Well 14 by McFadden/Gothard 2017 $ 750,000 2018-19 $ 4,250,000 $ 5,000,000 Production 27 1.3 Miles of 24"to 30"Well Collection Line 2020 $ 500,000 2021-22 $ 3,500,000 $ 4,000,000 Distribution ':.. 28 1< New Well 15 in Ex-Navy Easement by Edwards 2020 $ 750,000 2021-22 $ 4,250,000 $ 5,000,000 Production 29 New Well 16 in Ex-Navy Easement by Edwards 2022 $ 750,000 2023-24 $ 4,250,000 $ 5,000,000 Production 30 Security at Peck Reservoir&Well 13 2019 $ 100,000 2020 $ 500,000 $ 600,000 Security 31 Aging Pipe Replacement(Incl.5%of AC Pipe) Annual` $ 7,500,000 Annual e $25,000,000 $32,500,000 Replacement 32 Sunset Beach Water Main Replacement Ph III° NA - 2019 $ 2,000,000 $ 2,000,000 Replacement 33 ""` 8"Pipe Replacement Admiralty Bridge Rehab 2017 $ 25,000 2018 $ 75,000 $ 100,000 Replacement 34 8"Pipe Replacement Humboldt Bridge Rehab 2017 $ 25,000 2018 $ 75,000 $ 100,000 Replacement 35 OC-9 Replace 22"for I-405 Widen(OCTA Pays) 2017 2018 - - Replacement 36 12"Pipe Replace for 1-405 Widen(OCTA Pays) 2017 - 2018 - - Replacement 37 8"Pipe Replace for 1-405 Widen by Sugar 2017 $ 75,000 2019 $ 400,000 $ 475,000 Replacement ' 38 -:` Water Well 6 H,S Odor&Color Treatment 2019 $ 500,000 2020-21 $ 3,500,000 $ 4,000,000 Production 39 Water Well 8 H,S Odor&Color Treatment 2023 $ 500,000 2024-25 $ 3,500,000 $ 4,000,000 Production 40 Talbert Lake Irrigation Project 2018 $ 150,000 2020 $ 600,000 $ 750,000 Production 41 Groundwater Master Plan 2025 $ 150,000 NA - $ 150,000 Study 42 Security at Well 3A 2025 $ 50,000 2026 $ 100,000 $ 150,000 Security 43 Security at Well 6 2027 $ 50,000 2028 $ 100,000 $ 150,000 Security 44 Security at Well 8 2029 $ 50,000 2030 $ 100,000 $ 150,000 Security 45 `> Security at Well 9 2031 $ 50,000 2032 $ 500,000 $ 150,000 Security 46 Security at Well 10 2033 $ 50,000 2034 $ 100,000 $ 150,000 Security `.47__'r Water Distribution Improvements Annual` $ 200,000 Annual` $ 2,000,000 $ 2,200,000 Distribution 48 Water System Corrosion Control Annual` $ 100,000 Annual e $ 1,000,000 $ 1,100,000 Corrosion -s:49 - Water Production System Improvements Annual` $ 200,000 Annual` $ 2,000,000 $ 2,200,000 Production 50 WMP and Financial Plan Updates Every 5 Yrs $ 200,000 NA - $ 200,000 Study 51 Urban Water Management Plans Every 5 Yrs $ 200,000 NA - $ 200,000 Study 52 ` 8.6 Miles OC-44 Corrosion Control° NA 2028-29 $ 4,140,000 $ 4,140,000 Corrosion 53 WOCWB OC-35&OC-9 Corrosion Control 2032 $ 105,000 2033-34 $ 3,307,500 $ 3,412,500 Corrosion 54 <' OC-44 Scour Protection 30"at Creek Crossing 2024 $ 41,400 2025 $ 621,000 $ 662,400 Replacement 55 Overmyer Booster Station Dual Drive 2030 $ 300,000 2031-32 $ 1,700,000 $ 2,000,000 Production r 56 Peck Reservoir Roof Replacement 2032 $ 300,000 2033-34 $ 1,700,000 $ 2,000,000 Production 57 Water Facilities Security Improvements Annual` $ 100,000 Annual` $ 400,000 $ 500,000 Security Total $13,981,400 $75,878,500 $89,859,900 a)Cost estimates as of Nov 2015(LA ENR=10092).Escalation of design and construction costs will be accounted for in Financial Plan. b)Design Costs range from 5 to 15%of construction costs,depending on project size and complexity and include preliminary design,final design,potholing, geotechnical,survey,and bidding services. c)Construction Casts include construction management and City project management.Construction management costs range from 2.5 to 5%of construction costs for shop drawings,RFls,field visits,etc.,but do not include inspection services.City project management costs range from 5 to 9%ofconstruction costs and may include inspection services depending on the project type. d)Design already complete or costs encumbered. e)Amount shown is the sum of 20 years. PSOMAS ES-10 October 2016 CITY OF HUNTINGTON BEACH Water Master Plan Update Executive Summary Improvement Projects Categorized Into 6 Programs All 44 remaining and new improvement projects and programs identified and described above are divided into 6 Capital Improvement Water Programs with recommended phasing over the next 20 years and an estimated uninflated total cost of$128.2 million. They are as follows: • Water System Corrosion Control - 3 Projects/Programs- $8.7 Million • Water Distribution System Improvements - 7 Projects/Programs- $19.2 Million • Water Main Replacements - 10 Projects/Programs- $38.7 Million • Water Production System Improvements - 14 Projects/Programs - $59.2 Million • Water Facilities Security Improvements - 7 Projects/Programs- $1.9 Million • Water Engineering Studies -3 Studies/Programs- $550,000 Recommendations for Additional Studies Section 3.3.9 of this Water Master Plan recommends a future extensive well study, Groundwater Master Plan, to assess the condition of each of the City's existing wells, determine their remaining useful life, and develop a systematic approach to replacement of wells in their same general location and/or the addition of new wells at future locations. ES.9 Asset Management — Twenty Year and Immediate Needs An essential component of a Water Master Plan is an Asset Management approach to maintain a long-term, reliable water infrastructure system to service the City's customers. Water is a valuable resource and requires a complex water infrastructure system to supply, store, and distribute it at adequate pressure to meet daily water demands and fire protection requirements. As shown in Table 4-13, it would cost over $1.4 billion to construct the City's water system at today's cost. Since various components of the water infrastructure system will have a limited useful life, it is vital for the City to invest in on-going annual maintenance and capital improvement rehabilitation and replacement programs for long-term sustainability of a reliable water infrastructure system. Twenty Year Capital Improvement Needs A priority list that combines Tables 7-2 and 7-3 (Tables ES-1 and ES-2) identifies 44 capital improvement project needs/programs over the next 20 years. Total cost in today's dollars is estimated at $128.2 million. This equates to approximately 9% of the estimated replacement cost of the water system (in today's dollars) to be invested over the next 20 years, or around 0.5% annually. From the perspective of typical asset management, expending only 0.5% annually on a water system capital rehabilitation and replacement program is considered to be extremely efficient. City staff is separately preparing the 2016 Financial Plan Update, to evaluate various funding options to meet the long-term needs identified in this water master plan update. PSOMAS ES-11 October 2016 CITY OF HUNTINGTON BEACH Water Master Plan Update Executive Summary Immediate Capital Improvement Needs Table ES-3 below is a list of 14 high priority capital improvement projects and programs that have been identified for FY 2016/17. Upon adoption of the 2016 Water Master Plan by City Council, City staff would be able to utilize existing funds from the Water Master Plan Fund balance of approximately $28.1 million (as of October 1, 2016) toward these projects that total $6.6 million. A healthy fund balance of$21.5 million will still remain after allocating a portion of the Water Master Plan Fund to construct these 14 high priority projects. Although the current fund balance does not meet the financial needs over next 20 years, having this fund balance of$28.1 million will immediately sustain the design and construction of priority water infrastructure and provide staff with valuable time to complete the Financial Study. It will also provide City Council with the time to evaluate the financial options from the draft Financial Plan, once completed. Table ES-3 Estimated Costs for 14 Water Master Plan Projects (FY 2016/17) 1 Beach Blvd.Pipeline Imps. $ 700,000 Distribution NA Well 1 Replacement $ 1,250,000 Production 21 OC-44 Sliplining30"atCreekCrossing $ 1,035,000 Replacement 22 Peck Reservoir Dual Drive&Well 7 Security $ 1,500,000 Production 24 Well 9 1-12S Odor Treatment $ 1,000,000 Production 25 WOCWB OC-35 Relocate 33"for 1-405 Widening $ 210,000 Replacement 26 New Well 14 by McFadden/Gothard $ 500,000 Production 33 8" Pipe Replacement Admiralty Bridge Rehab $ 25,000 Replacement 34 8"Pipe Replacement Humboldt Bridge Rehab $ 25,000 Replacement 37 8"Pipe Replace for 1-405 Widen by Sugar $ 75,000 Replacement 47 Water Distribution Improvements $ 110,000 Distribution 48 Water System Corrosion Control $ 55,000 Corrosion 49 Water Production System Improvements $ 110,000 Production 57 Water Facilities Security Improvements $ 25,000 1 Security Total $ 6,620,000 PSOMAS ES-12 October 2016