65B - PROPOSED WATER AND SEWER RATE ADJ

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WATER RATE STUDY I City of Santa Ana, CA ProposedRates .............................................................................................................................. .............................53 RevenueSufficiency ..................................................................................................................... .............................57 TypicalBill Impacts ...................................................................................................................... .............................58 Summary............................................................................................................................................. ............................... 60 Appendix A: Refurbishment & Replacement Program ........................................... .............................62 Capital Asset Valuation and Refurbishment and Replacement Needs Evaluation Methodology.. 63 Methodology................................................................................................................................. ............................... 63 Development of Asset Class Library ..................................................................................... .............................63 Development of Refurbishment and Replacement Schedules and Costs ................... .............................65 Development of Valuation of Capital Assets ........................................................................... .............................66 Capital Asset Inventory, Asset Class Library and Replacement Schedule Database Development66 AssetInventory .............................................................................................................................. .............................66 InventoryData Sources .............................................................................................................. .............................66 Asset Class Library Contents .................................................................................................... .............................67 WaterInfrastructure System ................................................................................................... .............................67 Non - System- Specific Assets ..................................................................................................... .............................70 Refurbishment Intervals and Schedule ............................................................................... .............................71 Capital Asset Valuation and Schedule of R &R Needs and Estimated Costs ............... .............................72 Capital Asset Valuation Summary .......................................................................................... .............................72 Total System Capital Asset Schedule of R &R Needs ....................................................... .............................72 Appendix B: Water CIP Prioritization Process ........................................................... .............................76 Introduction....................................................................................................................................... ............................... 77 CIPfor Outside Plant Assets .......................................................................................................... .............................77 General Assumptions and Observations .................................................................................. .............................79 WaterCollection System CIP Analysis ...................................................................................... .............................80 WaterSystem Statistics ............................ ................. .......... ---- .... -- ............................................................. ..... 80 WaterMain Break Statistics ..................................................................................................... .............................89 Probability of Failure Analysis (PoF) .............................................................................. ............................... 107 Consequence of Failure Analysis (CoF) .......................................................................... ............................... 116 BusinessRisk Exposure ( BRE) ........................................................................................... ............................... 120 Appendix C: Replacement Cost Calculation - All Assets within City ServiceArea ........................................................................................... ............................... ............................123 Introduction........................................................................................................ ............................... ............................124 Water Distribution System R &R Prioritization ................................................................ ............................... 126 BRE Replacement Prioritization ............................................................................................. ............................... 127 R &R Strategy Groups and CIP Budgeting ................................................ ............................... ............................130 GIS Improvement Opportunities ....................................................................................... ............................... 134 Planning Recommendations ............................................................................................... ............................... 134 ii NOVEMBER 2014 65B -7