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A Fairfax County, VA, publication
Department of Public Works and Environmental ServicesWorking for You!
Wastewater Management Capital Improvement Program
Fairfax County Planning Commission CIP Workshop FY 2020 – FY 2024
March 13, 2019
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Wastewater Management Capital Improvement Program
Wastewater Management Program
CIP Priority Treatment Projects
• Regulatory Upgrades• Bio-Solids Program: The rehabilitation of the multiple hearth furnaces, additional air pollution control
equipment.
• Reinvestments – Infrastructure Improvements• Filter facilities rehabilitation• Disinfection facilities replacement• Raw Pump Station rehabilitation• Primary and Secondary facilities rehabilitation
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The Sanitary Sewers CIP program is on pages 180 – 186 of the FY 2020-FY 2024 Advertised CIP
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Wastewater Management Program
Wastewater Management Capital Improvement Program
Bio-Solids Program
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• Facility: Bio Solids Processing
Building• Upgrade facility to meet new Air
Quality Regulations
• Rehabilitate multiple hearth
furnaces in order to extend useful
life
• Last rehabilitation was in the
1990s
• Built in the 1970s
• TPE $157.8 million
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Wastewater Management Program
Wastewater Management Capital Improvement Program
Filter Facility
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• Facility: Filter Facility Building• Upgrade facility with improved, safer, and ease of operation technology
• Built in the 1970s
• TPE $130 million
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Wastewater Management Program
Wastewater Management Capital Improvement Program
Disinfection facility - example
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•Replacing existing chlorination/de-chlorination system with UV disinfection system
•TPE $100 million
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Wastewater Management Program
Wastewater Management Capital Improvement Program
Pump Station Rehabilitation (Treatment)
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• Facility: Raw Wastewater
Pumping Rehabilitation• Rehabilitation of the B and B2
raw wastewater pumping facility
• Replace, refurbish, and rehab the
2 pump stations and related
infrastructure.
• Built in the 1970s
• TPE $106 million
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Wastewater Management Program
Wastewater Management Capital Improvement Program
Primary and Secondary Process Facilities
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• Facility: Primary and Secondary Process Facilities• Rehabilitation of the primary clarifiers, secondary clarifiers, other related infrastructure
• Built in the 1970s and 1980s
• TPE $516 million
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Wastewater Management Program
Wastewater Management Capital Improvement Program
Sewer Line Replacement and Rehabilitation (Collection)
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• Replacement and Rehabilitation
of the County’s 3,200 miles of
sewer lines, built between 1940’s
• Focus on Large Diameter (>15”)
for Replacement
• Cured In Place Piping (CIPP) –
average of 25 miles per year
• Built as early as the 1940s
• TPE $30 million (annual)
Lake Thoreau floated sewer line FY 2016
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Wastewater Management Program
Wastewater Management Capital Improvement Program
Pump Station Rehabilitation (Collection)
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• Rehabilitation of the County’s pump stations to include the pumps, structures, piping, control
centers, HVAC systems, and various other associated components
• Continuous funding for rehabilitating 4-5 pump stations per year• Pump Stations in Providence and Dranesville Districts as examples. Daily capacity is .4 to .6 million gallons ($3.25M TPE)
• $148 M over 10 years
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Partners FY2020-FY 2024 ($000’s)
Alexandria Renew Enterprises (ARenew) 100,830
DC Water (Blue Plains) 58,663
Arlington Treatment Plant 7,503
Upper Occoquan Service Authority (UOSA) 49,269
Wastewater Management Capital Improvement Program
Treatment by Contract (TbC)
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Additional Information
For additional information, please contact
www.fairfaxcounty.gov/dpwes
Wastewater Management Capital Improvement Program
Wastewater Management Program 11
Shahram Mohsenin
703-324-5026