Improve watershed conditions and reduce downstream impacts through…. Stabilize the channel Reduce erosion Protect vegetation Restore native vegetation & riparian buffer Connect and enhance wetlands within former lakebed Improve water quality

1. A Fairfax County, VA, publication
Department of Public Works and Environmental Services
Working for You!
Piney Run at Lake Werowance Stream Restoration Project
Pardon Our Dust Meeting
Neely L. Law, Project Manager
Watershed Projects Implementation Branch
October 21, 2021

2. Piney Run at Lake Werowance Stream Restoration
Stormwater Planning Division
Housekeeping and Logistics
PLEASE MUTE YOURSELF ASK QUESTIONS FOR US IN
THE CHAT
SLIDES WILL BE AVAILABLE
ON PROJECT WEBSITE
Q/A WILL BE AT THE END

3. Piney Run at Lake Werowance Stream Restoration
Stormwater Planning Division
AGENDA
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 Project Background
 Project Goals & Benefits
 Existing Conditions
 Example restoration features
 What to Expect During Construction
 Schedule
 Contact information
 Q&A

4. Piney Run at Lake Werowance Stream Restoration
Stormwater Planning Division
Project Timeline
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Design Fall 2018 - Spring 2021
Construction Fall 2021-Fall 2022
Inspection Spring 2023- >
Survey Spring 2018
Revegetation

5. Piney Run at Lake Werowance Stream Restoration
Vicinity Map
Stormwater Planning Division 5
Difficult Run
Watershed
3,376 linear feet of
stream and wetland restoration

6. Piney Run at Lake Werowance Stream Restoration
Pre- and Post Dam Breach
Stormwater Planning Division 6
2011 2019

7. Dead Run @ Georgetown Pike Stream Restoration
Stormwater Planning Division
Stormwater Program Drivers
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In response to The Clean Water Act of 1972…
• Municipal Separate Storm Sewer Permit (MS-4)
– Regulates amount of pollutants in waterways
• Chesapeake Bay Total Maximum Daily Loads (TMDL)
• Other Local TMDLs = Local Stream Health
• Protection of County infrastructure
• Citizen concerns

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Project Goals & Benefits
Improve watershed conditions and reduce
downstream impacts through….
Stabilize the channel
• Reduce erosion
• Protect vegetation
Restore native vegetation & riparian
buffer
Connect and enhance wetlands within
former lakebed
Improve water quality
Piney Run at Lake Werowance Stream Restoration
Stormwater Planning Division

9. Stormwater Planning Division
Piney Run at Lake Werowance Stream Restoration
Existing Stream Condition – Upper Reach
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10. Piney Run at Lake Werowance Stream Restoration
Existing Stream Condition – FORMER LAKE BED
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Stormwater Planning Division

11. Piney Run at Lake Werowance Stream Restoration
Existing Stream Condition – DAM BREACH
Stormwater Planning Division 11
2016
2020

12. Stormwater Planning Division
Piney Run at Lake Werowance Stream Restoration
Reference Site
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Reference reach: Jefferies Branch (Loudoun County, Virginia)

13. Stormwater Planning Division
Piney Run at Lake Werowance Stream Restoration
Example Stream Structures – Using Wood
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Log rollers
Floodplain log with Root Wad
Log Vane with Root Wad
Riffle with Log Roller

14. Stormwater Planning Division
Piney Run at Lake Werowance Stream Restoration
Stream - Wetland Restoration within former lakebed
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15. Piney Run at Lake Werowance Stream Restoration
Stormwater Planning Division
Design – Pedestrian Bridge Realignment
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Existing bridge will be removed and new 40’ bridge will be installed
approximately 60’ downstream

16. Piney Run at Lake Werowance Stream Restoration Project
Stormwater Planning Division
Mulch Trail
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17. Piney Run at Lake Werowance Stream Restoration
Stormwater Planning Division
Strategies for Successful Revegetation
• Stream Restoration Design Goals
– Structural and Biological
• Pre-Construction
– Invasive Plant Management
• Final Phase of Construction
– Seeding and planting
• Minimum 3-year Permit monitoring
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18. Piney Run at Lake Werowance Stream Restoration
Stormwater Planning Division
Stream Alignment and Reaches
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19. Stormwater Planning Division
Piney Run at Lake Werowance Stream Restoration
Construction Entrance
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Parcel
949 Walker Rd
CONSTRUCTION
ACCESS

20. Piney Run at Lake Werowance Stream Restoration
Stormwater Planning Division
Temporary Infrastructure to Restore the Stream
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Access road and tree protection area
Construction staging and stockpile

21. Piney Run at Lake Werowance Stream Restoration
Stormwater Planning Division
Large Construction Equipment is Required
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Track truck Excavator

22. Piney Run at Lake Werowance Stream Restoration
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Expectations During Construction
• Contractor is required to comply with Fairfax County’s Construction
Safety Resolution
– Contractor will maintain a safe, neat and clean work area
• Contractor is required to comply with the Fairfax County’s Noise
Ordinance
– Work hours Monday-Friday 7:00am to 9:00pm
– Work hours Saturday, Sunday and Federal Holidays 9:00am to 9:00pm
– CHAPTER 108.1. - Noise Ordinance. | Code of Ordinances | Fairfax County, VA | Municode Library
Stormwater Planning Division

23. Piney Run at Lake Werowance Stream Restoration
Stormwater Planning Division
Construction – Who Will Be Onsite
• HGS, LLC - Contractor
– Project Manager
– Superintendent
– Foreperson
– Crew
– Planting Crew
• Stantec – Design Firm
– Construction oversight
– Design Engineer
• Fairfax County
– Inspector
– Code Enforcer
– Construction Manager (Yousef)
– Project Manager (Neely)
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24. Piney Run at Lake Werowance Stream Restoration
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Safety and Expectations During Construction
Please stay outside the
construction limits at all times
Stormwater Planning Division

25. Piney Run at Lake Werowance Stream Restoration
Stormwater Planning Division
Example Construction Schedule
• ~ 14 months of mobilization and active construction
• Final schedule to be approved
– Restoration schedules can overlap with multiple crews
– Plantings occur in spring, fall and/or winter (live stakes) seasons
• Includes 1-year warranty on structures and vegetation
• Vegetation warranty starts when planting ends (may be delayed for season)
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Substantial
Completion

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Contact Information
Contact Information
Design
Neely Law – Project Manager
703-324-6527
Neely.Law@fairfaxcounty.gov
Stormwater Planning Division
12000 Government Center Parkway
Suite 449
Fairfax, Virginia 22035
www.fairfaxcounty.gov/publicworks/stormwater
Contact Information
Construction
Yousef Rayyan– Project Engineer
703-324- 5132
Yousef.Rayyan@fairfaxcounty.gov
Utilities Design and Construction Division
12000 Government Center Parkway
Suite 463
Fairfax, Virginia 22035
https://www.fairfaxcounty.gov/publicworks/capital-projects
To request this information in an alternate format call
703-324-5500, TTY 711
Project Website:
www.fairfaxcounty.gov/publicworks/pineyrun-lake-werowance