2006 Water Comprehensive Plan - City of Bellevue

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9876543210Figure 7-1Planned Water System R&R Revenues and Expenditures2006-2075(2006 dollars)RevenuesExpenditures2000 2010 2020 2030 2040 2050 2060 2070 2080Year$ (millions)7-5
PIPELINE RENEWAL AND REPLACEMENTBellevue’s program for pipe replacement is based on a plan that balances the cost ofreplacement against corrective action after failure and anticipated preventative maintenance forthe residual life of the pipe. To accomplish the that objective, a predicted useful life for thevarious pipe materials is combined with actual field experience for all pipe in the system todetermine the likelihood of failure. The likelihood of failure is combined with an assessment ofthe consequence of failure to determine business risk. The renewal and replacement (R&R) planthen recommends pipe replacement in the most cost-effective manner, while minimizing thenumber of pipeline failures that would result in significant customer inconvenience andproblems.The City’s program recognizes that the entire piping system will be replaced over a time periodequivalent to the useful life of the pipe. This analysis refines replacement criteria and estimatesresulting projected expenditures over time so that appropriate water rate revenue adjustmentscan be made to provide the necessary funding for the R&R program.The City preliminary estimate for pipeline replacement costs and timing (to predict the cashflow requirements) is based on the age, diameter, pipe material, length of pipe in the system,projected time of pipe replacement, and estimated present value cost of the replacement. Thiswork is used during rate analyses to forecast required adjustments to water rates.Pipeline Replacement ProgramBellevue has a capital investment program to increase fire flow protection by replacing smalldiameter (4-inch and some 6-inch) AC pipe that restricts available fire flow to less than 1000gpm by the year 2020. This fire flow improvement program involves annual replacement ofapproximately 2.3 miles of pipe. This small diameter pipe is typically replaced with 8-inch DIpipe regardless of the size of the existing pipe. Coincidentally, the small diameter AC pipe isgenerally the oldest pipe in Bellevue’s system.Figure 7-1 includes anticipated pipeline R&R expenditures. These expenditures are based oneffective useful life estimates and incorporate the use of survival curves.Identifying Specific Replacement ProjectsThe development of the effective useful life data and projected expenditures does not identifyindividual pipelines is to be replaced at any particular time. The City must determine andprioritize the specific pipe replacement schedule. City staff develop the annual capitalimprovement schedule based on predicted life, maintenance and failure history, business riskexposure (criticality), and other considerations such as street resurfacing and related projects.Table 7-1 lists various criteria that the City could use to assist in prioritizing specific R&Rprojects as well as a suggested method for obtaining the information.7-6
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WaterComprehensivePlan
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ASSET MANAGEMENTR&R needs areregula
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CONTENTSExecutive SummaryPageiiiCha
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Chapter 12 - Financial Information
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10-1 Federal Drinking Water Quality
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CHAPTER 1IntroductionUtilities Depa
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Demand. The quantity of water obtai
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EKCEast King CountyEKC-CWSP East Ki
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CHAPTER 2Water Utility PoliciesThe
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owner agrees to reimburse the City
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Facility AbandonmentWhen the Utilit
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Discussion:The Utility should syste
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Discussion:It is Bellevue’s polic
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Discussion:In 1982, Bellevue, along
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Waterworks UtilityFinancial Policie
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B. Self-sufficient FundingEach Util
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B. Funding LevelsFunding for capita
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D. Capital Facilities Renewal & Rep
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overhead for developer extension pr
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equired to balance the expenses. A
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demonstrate that the hydrologic res
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adopted to recover those costs dire
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In 2004, the Financial Consulting S
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Discussion:Providing reserves for e
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individual Transportation Analysis
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Table 3-2Residential Population Pro
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2006CURRENT LAND USENE 8TH ST104TH
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SERVICE AREAThe current Bellevue ci
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Table 3-3Interties(Regional Supply
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Bellevue and Kirkland are currently
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Water District No. 22Water District
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Utility Service Review ProceduresTh
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CHAPTER 4Water RequirementsThe exis
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This type of demand is relatively c
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• Apparent Losses: Includes unaut
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Existing DemandExisting water deman
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The future build-out demand project
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Table 4-4cBuildout Demand Projectio
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Table 4-6Comparison of Eastside Com
Page 90 and 91: pressure throughout the rest of the
Page 92 and 93: Pressure ZonesPressure zones are de
Page 94 and 95: CHAPTER 5Water ConservationThe City
Page 96 and 97: identifies the main categories of a
Page 98 and 99: Table 5-2Historical Conservation Me
Page 100 and 101: Speakers BureauThis measure is defi
Page 102 and 103: Bill Showing Consumption HistoryThi
Page 104 and 105: schedules, and efficient irrigation
Page 106 and 107: Seasonal Demand ManagementThis meas
Page 108 and 109: RowTable 5-5Conservation Savings Ac
Page 110 and 111: Figure 5-1Single Family Water Use P
Page 112 and 113: Since the post-conservation era beg
Page 114 and 115: statement about each measure is inc
Page 116 and 117: CHAPTER 6Existing SystemThis chapte
Page 118 and 119: KIRKLANDREDMONDLakeWashingtonWest B
Page 123 and 124: City of BellevueWater Pressure Zone
Page 125 and 126: Supply ConnectionNE 40th InletCherr
Page 127 and 128: appropriate, PRV records also inclu
Page 129 and 130: Table 6-5Pump StationsPage 1 of 2Na
Page 131 and 132: Table 6-6Storage FacilitiesPage 1 o
Page 133 and 134: HYDRAULIC OPERATIONSTables 6-7 thro
Page 135 and 136: ZonePrimary SupplyConnectionsReserv
Page 137 and 138: ASSET MANAGEMENT PROGRAM DEVELOPMEN
Page 139: total business risk exposure.Determ
Page 143 and 144: In 1999 Montgomery Watson completed
Page 145 and 146: CHAPTER 8System AnalysisThe purpose
Page 147 and 148: from Seattle’s Eastgate and SE 28
Page 149 and 150: year. When these small-diameter pip
Page 151 and 152: Fire Flow VolumeDefinitionWAC 246-2
Page 153 and 154: increase in demand anticipated due
Page 155 and 156: Table 8-1bSummary of Storage Evalua
Page 157 and 158: Storage Conclusions and Recommendat
Page 159 and 160: To evaluate required capacity for t
Page 161: CHAPTER 9Operations and Maintenance
Page 166 and 167: Table 9-1Engineering and Environmen
Page 168 and 169: Table 9-3Water Department Vehicles
Page 170 and 171: RECORDS AND DATA MANAGEMENTSystem O
Page 172 and 173: Pump Stations. Each pump station is
Page 174 and 175: CHAPTER 10Water QualityThis Chapter
Page 176 and 177: Bellevue is responsible for monitor
Page 178 and 179: Table 10-2Annual Average of Total T
Page 180 and 181: esponsible for collecting any repea
Page 182 and 183: While the CCR provides an annual
Page 184 and 185: • Very Small System Waiver - Syst
Page 186 and 187: CCL, which is comprised of 51 (nine
Page 188 and 189: • Aging infrastructure and corros
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SUMMARY OF MONITORING REQUIREMENTST
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. At the time the backflow preventi
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Element 8: The purveyor shall inclu
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separation of common water inlets/o
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Fire Hydrant ImprovementsThis progr
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PRIORITIZATION OF IMPROVEMENTSCapit
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CHAPTER 12Financial InformationThis
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TABLE 12-2City of BellevueWater Uti
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during periods of high expenditures
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Bonds issued by the "Waterworks Uti
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TABLE 12-5City of BellevueWaterwork
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APPENDIX BService Area and Adjacent
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APPENDIX DAdjacent Purveyor Review
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CopyCenterFrom: Thompson, Randall L
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CopyCenterFrom:Scott Thomasson [STH
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CopyCenterFrom:Bob Trimble [bob.tri
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Consistency w/SPU forecast for wate
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Provision of SDWA water quality rep
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• Federally-approved habitat cons
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APPENDIX EConsistency Statement Let
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2006 Water Comprehensive Plan - City of Bellevue

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