Lakevale Estates Discharge Realignment Project (WW-000032-008)

Project Update

In February 2021 Closed Circuit Television (CCTV) Inspections and an in-depth condition assessment of the downstream gravity sewer system will take place. Throughout February and March 2021, a hydraulic analysis study covering upstream and downstream of Lakevale Estates Pump Station will take place. These studies will assist in the data gathering process. Together with the drawdown test, survey data, utility locating and geotechnical analysis these data points should allow the county to begin design in April 2021.

Survey crews started working in the neighborhood in December 2020 to assist the county in gathering data for designing upgrades to the sewerage system. A drawdown test at Lakevale Estates Pump Station occurred on Jan 14, 2021. County employees with the Wastewater Collection Division and Dewberry consultants were present to gather flow data.

The sewerage system that conducts flow away from Lakevale Estates Pump Station has reached the end of its useful life and is due for upgrades. Dewberry was selected as the architect/engineer firm to create a design. A scope of work is being decided upon while investigations take place. The Lakevale Estates Pump Station was recently updated.

Project Background

2020 Analysis Memo:

Following the startup of the rehabilitated Lakevale Estates Pump Station with higher capacity pumps, occasional sewage backups were reported in a house on Newton Street located near the force main discharge manhole. Parts of the gravity sewer system and force main have been recommended to be replaced with larger pipes to increase the capacity and reduce sewer backups for residents.

2019 Lakevale Estates Pump Station rehabilitation:

The Lakevale Estates Pump Station had been identified for rehabilitation due to its age and was upgraded in 2019/2020.

Project Description

The project is in the planning phase. However, the overall project description will include the replacement of existing gravity sewer and expansion of the force main route. There is a plan to replace 2,458 linear feet of undersized 10-inch asbestos cement sewer pipe located along Newton Street and Vale Road. The existing Lakevale Estates pump station force main discharges into this sewer at a receiving manhole on Newton Street. The project will provide the planning, design and bid services to replace the downstream 10-inch gravity sewers with new larger diameter sewers with adequate capacity to convey flow from the Lakevale Estates pump station and gravity flow from contributing residential dwelling units. In addition, the 21 manholes connected to these undersized sewers will be replaced.

Project Location

The project is in Lakevale Estates along Newton Street, Lindel Lane and Vale Road in Fairfax County.

Project Phase

This is the data collection and planning phase. Due to COVID-19 a public walk is not scheduled at this time. However, a virtual meeting is planned for February 2021.

Timeline

What To Expect

This project will be awarded to a qualified contractor through a competitive bidding process once design efforts are completed. Potential staging areas and access points off-site will be studied. All work will be supervised by Fairfax County staff. Every effort will be made to minimize disturbances and impacts to public and private areas. Careful consideration will be given to schedule construction activities to minimize interference with recreational activities. There will be no interruption to existing sanitary sewer service.

Project Cost and Funding Source

The total project estimate is expected to be $2 million. As of January 25, 2019, funding in the amount of $9,631,000 is available in Fund 690C69300, Project Number WW-000032-008, to fund this project. The Lakevale Estates project is included in the FY 2021/2025 Adopted Capital Improvement Program (with Future Fiscal Years to 2030) identified as the Sanitary Sewer Replacement, Rehabilitation and Reinvestment Program.

Contact

For more information please email Elizabeth Merin, Engineer II, Wastewater Design and Construction Division, Department of Public Works and Environmental Services, or call 703-324-5111, TTY 711.