Quander Road Outfall and Stream Restoration

1. A Fairfax County, VA, publication
Department of Public Works and Environmental Services
Working for You!
Quander Road Stream Restoration Project
June 3, 2017
Contract No. CN15125144
Project No. SD-000031-140
Mt Vernon District

2. Quander Road Stream Restoration Project
Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch

3. Project Details
Description:
The Quander Road Stream Restoration project was substantially completed on February 23, 2017. The overall project consisted of
restoration of approximately 775 linear feet of a highly eroded storm drainage channel (Reach 1) and 225 linear feet of the
associated tributary (Tributary 1). The stream drains a 16.9 acre watershed with an average impervious cover of 17 percent, but at
the upstream portion of Reach 1, the average impervious cover is as high as 39 percent.
Project Overview:
• Natural Channel Design techniques have been used to develop a new and stable channel geometry. Placement of in stream
structures, Boulder Pools, Step Pools, Reinforced Bed Mix, Boulder Riffles, Rock Sills and Habitat Logs prevent future erosion
• Restoration of the disturbed area with native seed mix, shrubs, and tree plantings will provide additional water quality
benefits
• Reconnected channel with the floodplain to increase phosphorus cycling and sediment retention along the reach
• Significantly lifted and improved the outfall infrastructure to mitigate safety concerns and improve public use
• Re-established natural flow dynamic
Quander Road Stream Restoration Project
Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch
Benefits:
• Total Nitrogen Reduction (TN) – 3,020.5 lb/yr
• Total Phosphorus Reduction (TP) – 1,354.25 lb/yr
• Total Suspended Solids Reduction (TSS) – 233.4 ton/yr
Project Team:
• Stormwater Planning Division – Charles Smith, Meghan Fellows
• Utilities Design and Construction Division (UDCD) – Alan Rashid, David Becker
• Project Inspector, UDCD – Jeff Bartlett, Joseph Adzovie
• Fairfax County Park Authority – Philip Hager, Trina Taylor
• Wetland Studies and Solution, Inc., Design Consultant- John Connelly, Garrett Menichino, Michael Marsala, Josh Clements

4. Quander Road Stream Restoration Project
Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch
Alexandria, VA, Tax Map No. 93-1 ((01)) 0072B
Mt Vernon District

5. Quander Road Stream Restoration Project
Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch
Pre-existing Condition - Stream
Very steep, highly eroded
stream banks

6. Quander Road Stream Restoration Project
Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch
Pre-existing Condition - Stream
Very steep, highly eroded
stream banks

7. Quander Road Stream Restoration Project
Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch
Stream Work

8. Quander Road Stream Restoration Project
Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch
Stream Grading

9. Flatlick Branch – Phase I Stream Restoration
Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch
18’’ RCP outfalls to Stream

10. Quander Road Stream Restoration Project
Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch
Rock Step Series – Stream

11. Quander Road Stream Restoration Project
Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch
Installed Step Pool - Stream

12. Quander Road Stream Restoration Project
Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch
Installed Boulder Riffle - Tributary

13. Quander Road Stream Restoration Project
Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch
Completed Stream

14. Before After
Quander Road Stream Restoration Project
Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch

15. Additional Information
For additional Information, please call
www.fairfaxcounty.gov/dpwes
Quander Road Stream Restoration Project
Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch
Matthew Kaiser, Public Information Officer
703-324-5034, TTY 711
Matthew.kaiser@fairfaxcounty.gov