EBMUD Operations and Maintenance Report MULTI-AGENCY Benchmarking Study December 1999 MULTI-AGENCY BENCHMARKING STUDY Operations and Maintenance Report Participating Agencies Central Contra Costa Sanitation District City of Los Angeles Bureau of Sanitation City of Portland Bureau of Environmental Services East Bay Municipal Utility District King County Department of Natural Resources Orange County Sanitation District Sacramento Regional County Sanitation District In Consultation with Damon S. Williams Associates, L.L.C. December 1999 Data and information used to develop this report are from Fiscal Year 1997 (FY1997). Table of Contents Introduction....................................................................................................................................................................1 O&M Work Group ......................................................................................................................................1 Performance Tracking System.....................................................................................................................1 Definition of Costs.......................................................................................................................................2 Cost Collection Template ............................................................................................................................2 Identification of Potential Areas of Improvement .......................................................................................2 Agency Overview........................................................................................................................................2 Methodology..................................................................................................................................................................7 Data Collection ............................................................................................................................................7 Performance Benchmarking................................................................................................................7 Process Benchmarking........................................................................................................................7 Database Development ................................................................................................................................8 Data Analysis...............................................................................................................................................8 Data Presentation.........................................................................................................................................8 Constraints...................................................................................................................................................9 General O&M Benchmarking Results .........................................................................................................................11 Costs and Labor .........................................................................................................................................14 Costs and Labor for Constituent Removal ........................................................................................16 Supervision ................................................................................................................................................19 Unit Processes Benchmarking Results.........................................................................................................................21 Influent Pumping and Preliminary Treatment............................................................................................21 Performance Benchmarking..............................................................................................................22 Process Benchmarking......................................................................................................................25 Benchmarking Analysis ....................................................................................................................25 Primary Treatment .....................................................................................................................................27 Performance Benchmarking..............................................................................................................29 Process Benchmarking......................................................................................................................31 Benchmarking Analysis ....................................................................................................................32 Secondary Treatment .................................................................................................................................33 Overall Secondary Process Data .......................................................................................................36 Air-activated Sludge Systems ...........................................................................................................41 Pure Oxygen-activated Sludge Systems............................................................................................44 Secondary Clarifiers..........................................................................................................................50 Fixed Film Reactors..........................................................................................................................53 Residuals Processing and Handling ...........................................................................................................54 Grit, Screenings, and Scum...............................................................................................................56 Sludge Thickening ............................................................................................................................56 Digestion...........................................................................................................................................60 Dewatering........................................................................................................................................65 Biosolids Disposal/Reuse..................................................................................................................69 Odor Control..............................................................................................................................................74 Disinfection and Dechlorination................................................................................................................77 Process Benchmarking......................................................................................................................81 Effluent Pumping/Outfall ..........................................................................................................................83 Process Benchmarking......................................................................................................................85 Computer Systems and Automation ..........................................................................................................85 Process Benchmarking......................................................................................................................85 Power Generation/Energy Systems............................................................................................................88 Performance Benchmarking..............................................................................................................88 Process Benchmarking......................................................................................................................89 Benchmarking Analysis ....................................................................................................................90 i Table of Contents (continued) Unit Processes Benchmarking Results (continued) Other Maintenance.....................................................................................................................................91 Fleet Services....................................................................................................................................91 Maintenance Planning.......................................................................................................................94 Predictive Maintenance.....................................................................................................................95 Off-Shift Staffing..............................................................................................................................98 Combined Operations and Maintenance .........................................................................................100 Workforce Flexibility/Skill-based Pay............................................................................................101 Labor Management Relations .........................................................................................................102 Managed Maintenance Programs.............................................................................................................103 Asset Management..........................................................................................................................103