Cornerstone Engineering Group The Foundation for Your Civil Engineering Needs Camanche Reservoir Water Treatment Plant Project Cecilia Zamora Evangelina Reyes Kathryn Garcia Michael Bockrath 03/10/04 Camanche Reservoir South Shore (CASS) Camanche Reservoir North Shore (CANS) Progress Update

Overview Project Review Alternatives Problems Regulations Systems Costs Schedule Update Summary

Project Review Objectives – Single Water Treatment Plant Serving both South Shore and North Shore Supply pipeline through Camanche reservoir to existing North Shore storage tanks – Minimum Capacity 0.5 Million Gallons Per Day 100% redundancy – Expandable to up to 2 Million Gallons Per Day – Water quality regulations Current and Future – Reduce O&M cost

Project Review (continued) Existing Proposed

Project Review (continued) Scope – Existing conditions – Regulations Small Systems – Analysis Sustainability Constructability Cost – Negative Declaration – EBMUD regulations – Calculations, specifications, and drawings

Overview Project Review Alternatives Problems Regulations Systems Costs Schedule Update Summary

Alternatives Discarded Options – No Build Option – Retrofit of Existing Plants – New Consolidated Plant North Shore Location –Raw water from Camanche reservoir –Raw water from Mokelumne Aqueduct –Groundwater

Alternatives (continued) Remaining Alternatives – South Shore Location Groundwater Raw water from Camanche reservoir Raw water from Mokelumne Aqueduct

Overview Project Review Alternatives Problems Regulations Systems Costs Schedule Update Summary

Allocation of time – Environmental assessment Research and data collection – Exempt from county regulations No response from main office in Oakland – Difficulty in obtaining data for systems Specifications Costs Problems

Overview Project Review Alternatives Problems Regulations Systems Costs Schedule Update Summary

Regulations Surface Water Treatment Rule – Long Term 1 Enhanced Surface Water Treatment Rule Total Coliform Rule Contaminants – Stage 1 Disinfection By-Product Rule – Filter Backwash Rule – Chemical Monitoring Rule – Radionuclides Public Notification/ Consumer Confidence Reports

Overview Project Review Alternatives Problems Regulations Systems Costs Schedule Update Summary

Systems Conventional Treatment Bag and Cartridge Membrane Filtration – Micro Filtration – Ultra Filtration – Nano Filtration – Reverse Osmosis

Systems (continued) General Filtration Characteristics

Overview Project Review Alternatives Problems Regulations Systems Costs Schedule Update Summary

Costs Budgetary System Costs – Complete System Costs – Operation and Maintenance Costs Values provided by Montgomery Watson Trade-offs – Set of Trade-offs – Trade-off Analysis

Costs (continued) System Costs – Complete membrane systems Microfiltration: $1.5 Million +10% Ultrafiltration: $2.5 Million +10% Nanofiltration: $3 Million +10% Reverse Osmosis: $3 Million +25% * Prices do not include building facility or installation

Costs (continued) Estimated O&M costs for membrane systems COMPLETE SYSTEM OPERATION AND MAINTENANCE COSTS (membrane elements, piping and tubing, valves, pumps, and control equipment) Labor (backwash, filter cleaning, visits) PowerChemical costs Microfiltration$50,000 to $100,000$10k to $20k$60k to $90k Ultrafiltration$50,000 to $100,000$10k to $20k$60k to $90k Nanofiltration$50,000 to $100,000$30k to $60k$80k to $120k Reverse Osmosis$50,000 to $100,000$40k to $90k$90 to $140k

Costs (continued) Set of Trade-offs – Identifying Key Measures of Effectiveness – Evaluating the Alternatives – Perform trade-offs with cost as an independent variable Trade-off Analysis – One illustration of the Trade-off analysis

Acceptable

Overview Project Review Alternatives Problems Regulations Systems Costs Schedule Update Summary

Schedule Update

Overview Project Review Alternatives Problems Regulations Systems Costs Schedule Update Summary

Single Water Treatment Plant - South Shore Location - Mokelumne Aqueduct water source - Membrane filtration system

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