Project Background

The Lakevale Estates Pump Station was identified for rehabilitation due to its age and was upgraded in 2019. Due to power failures at the pump station the system was overwhelmed, and residents experienced backups. A study was begun in September 2020 to look for long term solutions. The County installed flow meters throughout the sewershed and gathered data from February 2021 to August 2021. In August 2021 enough data was gathered to begin producing a hydraulic model of the sewershed.

Project Description

This project website is for the long-term solution, Lakevale Estates Collection Improvements. We are still in the project study phase. A hydraulic model was built to identify alternative improvements to the Lakevale Estates sewershed to address sewer surcharging downstream of the existing pump station. A Technical Memo (TM) will evaluate the alternative solutions and recommend alternatives for further development into a basis of engineering design. A Preliminary Engineering Report (PER) will develop the basis of design. A fully developed project scope for design and construction will be defined based on the study phase results of the TM and PER.

Project Location

The project is located in the Providence and Hunter Mill Districts and the Difficult Run watershed near Vale Rd.

See Lakevale Study area in relation to rain gages and flow monitoring map.

Project Phase

We are currently in the project study phase. A fully developed project scope for the design and construction phases will be defined based on the findings and recommendations of the study.

Timeline

• Additional surveying to start in early February 2024

What to Expect

Geotechnical Drilling will take place between September 12-30, 2022. Design and Construction phases will follow. 35% design is eminent.

Presentations to the Community

Lakevale Estates Collection Improvements Community Meeting, Preliminary Engineering Report Results - September 7, 2022

Lakevale Estates Collection Improvements Community Meeting, Final Technical Memo - March 1, 2022

Past Community Meetings:

A community meeting took place on September 22, 2021 to present on the action plan and provide an overview of the short-term, mid-term and long-term solutions.

Short term solutions provide immediate relief to the community and consist of installing back flow devices and the County performing preventative maintenance prior to expected large storm events.

Midterm solutions consist of temporary modifications to the Lakevale Estates Pump Station.

Long term Solutions will be based on the study currently taking place. Jacobs Engineering is conducting a study using a holistic approach investigating upstream and downstream of the pump station.

Contact

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