Date post: | 31-Oct-2014 |
Category: |
Business |
Upload: | kristinemassey |
View: | 597 times |
Download: | 0 times |
Tour of Water and Wastewater Systems
Graham Wadsworth
Town of Yountville
Public Works Department
Introduction
• Water System
• Wastewater System
• Expenses
• Revenue
Water System
• Source
• Treatment
• Transmission
• Distribution
Yountville
Veterans Home
Napa River
Highway 29
Silverado TrailWineries
Rector Watershed
Rector Watershed
Yountville
Lake Berryessa
Joint Treatment Plant
Recycled Water Users
Napa River
Napa River
Highway 29
Water Sources
• Rector Reservoir
• Lake Hennessey / Conn Dam
• Emergency Well
Rector Reservoir
Dam
Silverado T
rail
Rector Water Treatment Plant
Rector Dam and Treatment Plant
Water Distribution System
• Fire Hydrant Flushing Program
• Cross Connection Prevention Program
• Water Meter Reading
Water Distribution System
• Sampling, Testing and Reporting
• Water Conservation and Rebates
• Replace Water Lines and Meters
Water Pipelines
Fire Hydrant Flushing
Back Flow Prevention Device
Wastewater System
• Collection
• Treatment
• Disposal
• Recycled Water System
Wastewater Collection System
• Reduce Inflow of Rainwater and Infiltration of Groundwater
• Sewer System Management Plan
• Maintain and Improve Pump Station
• Replace Sewer Pipes
Smoke Testing
Sewer Manhole Coating
Sewer Line Cleaning
Wastewater Pump Station
Pipe Replacement
Levels of Treatment
• Primary
• Secondary
• Tertiary
Joint Treatment Plant
Joint Treatment Plant
Effluent Pond
Primary
SecondaryFinal
Chlorine Contact
Control Panel
Primary Sedimentation Tank
Sludge Digester
Primary Trickling Filter
Secondary Sedimentation Tank
Secondary Trickling Filter
Solids Contact Chamber
Final Sedimentation Tank
Fuzzy Filter
Chlorine Contact Chamber
Effluent Pond
Effluent Discharge
• Napa River during Wet Season
• Recycled Water Users during Dry Season
• Recycled 43% of Effluent in 2004
• Recycled 83% of Effluent in 2009
Yountville
Veterans Home
Napa River
Highway 29
Silverado TrailWineries
Rector Watershed Views Looking East
Vintner’s Golf Course
Joint TreatmentPlant
Effluent Pond
Sludge Drying Ponds
Highw
ay 29
Mondavi Recycled Water Pond
Operating Expenses
• Purchase of Water
• Salaries and Benefits
• Electricity and Gas
• Contract Services
• Chemicals
• Equipment Maintenance
Capital Improvement Expenses
• Recycled Water Project
• Improvements to Joint Treatment Plant
• Replace Water and Wastewater Pipes
• Replace Water Meters and Blow Offs
Revenues
• Water Enterprise Fund
• Wastewater Enterprise Fund
• Veterans Home for Joint Treatment Plant
• Recycled Water Sales
• Developer Impact Fees for Capital Improvements
Conclusion
• Provide Safe, Clean and Reliable Water
• Minimize Pollution to the Napa River
• Minimize Expenses
Questions and Answers