65B - PROPOSED WATER AND SEWER RATE ADJ

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SO City of Santa Ana, CA It should be noted that Black & Veatch conducted two analyses with respect to the City's assets: one including all assets found in the GIS system (Appendix C) and a second analysis looking at only City - owned assets (Appendix D. The results from Appendix D are reflected in the main body of this Report. WATER COLLECTION SYSTEM CIP ANALYSIS Water System Statistics For the purpose of this condition assessment / rate study, only the water mains were evaluated. Service lines, hydrants, valves, etc. were not evaluated. However, except for service lines, their costs were included in future replacement forecasting as part of the combined pipe replacement cost as applicable. Source data was primarily provided from Santa Ana's GIS system. Additional data was provided in spreadsheets, text files, and /or from communications with City staff. According to the City's GIS database, the water distribution system contains about 508 miles of water mains and has 13,591 pipe segments. The oldest pipe listed dates back to 1906. This condition analysis study does not include data from the Service Lines or Abandoned Mains tables. Water main break data was available only since 1990. Breaks with no break data (19 records) were also not included in the analysis. Pipe Material By far, the most predominant pipe materials in the water distribution system are Cast Iron (CI) and Asbestos Concrete (AC) Pipe; making up 39 and 36 percent of the system respectively. Material percentages (by length) are shown in Figure B - 2 below. Figure B- 3 provides a map of water mains color coded by pipe material. Figure B - 2: Water Mains Material by Miles and Percentages ■ Asbestos Concrete (AC) ■ Cast Iron (CI) ■ Cement Mortar Lined & Coated steel (CMLC) 0 Cylindrical (CYL) ■ Ductile Iron (DI) 0 Polyvinyl Chloride (PVC) 0 Steel (STL) W Unknown 65B -92 NOVEMBER 2014