The Sully Basins Stormwater Pond Retrofits project was substantially completed on April 19, 2022. The project is located within the Cub Run watershed. The project consisted of repair and enhancement of multiple stormwater basins, 0326DP, 0964DP and 1484DP. The project also included construction of new stone cascades, stone weir basin structures and the construction of wetlands with high and low marsh areas. The project will facilitate improved sediment removal and improve downstream water quality using forebays and micro pools. Aquatic and natural habitat were also added within the three basins.

1. A Fairfax County, VA, publication
Department of Public Works and Environmental Services
Working for You!
SULLY BASINS STORMWATER POND RETROFITS
Project No. SD-000031-169
Sully District
Tax Map No. 54-3
May 2022

2. Sully Basins Stormwater Pond Retrofits
Sully District, Tax Map No. 54-3
PROJECT LOCATION
N
Capital Facilities/Utilities Design and Construction Division/Stormwater Construction Branch 2

3. Sully Basins Stormwater Pond Retrofits
Project Detail
Description:
The Sully Basins Stormwater Pond Retrofits project was substantially completed on April 19, 2022. The project is
located within the Cub Run watershed. The project consisted of repair and enhancement of multiple stormwater
basins, 0326DP, 0964DP and 1484DP. The project also included construction of new stone cascades, stone weir
basin structures and the construction of wetlands with high and low marsh areas. The project will facilitate
improved sediment removal and improve downstream water quality using forebays and micro pools. Aquatic and
natural habitat were also added within the three basins.
Benefits (removal rates in pounds per year):
• 46.3 lbs. of total Phosphorus
• 282 lbs. of total Nitrogen
• 40,451 lbs. of Total Suspended Solids (TSS)
Project Construction Cost: $1,957,525
Capital Facilities/Utilities Design and Construction Division/Stormwater Construction Branch 3

4. Sully Basins Stormwater Pond Retrofits
Project Team
Department of Public Works and Environmental Services
Utilities Design and Construction Division
• Jim Cooper, Construction Manager
• Arjun Dhungel, Construction Inspector
• Jean Swim, Engineering Technician
Stormwater Planning Division
• Kenneth Trinh, Project Manager
• Joni Calmbacher, Project Manager
Land Acquisition Division
• Mohammad Najeeb, Right of Way Agent
Construction Contractor
• Triangle Contracting, LLC
Design Consultant
• AMT Engineering
Capital Facilities/Utilities Design and Construction Division/Stormwater Construction Branch 4

5. Pre-Construction
Sully Basins Stormwater Pond Retrofits
1481DP 0326DP 0964DP
Capital Facilities/Utilities Design and Construction Division/Stormwater Construction Branch 5

6. Sully Basins Stormwater Pond Retrofits
During Construction
Capital Facilities/Utilities Design and Construction Division/Stormwater Construction Branch 6

7. Sully Basins Stormwater Pond Retrofits
Riser Installations
Capital Facilities/Utilities Design and Construction Division/Stormwater Construction Branch 7

8. Sully Basins Stormwater Pond Retrofits
Micro-Pool and Sediment Forebay
0964DP 0964DP
Capital Facilities/Utilities Design and Construction Division/Stormwater Construction Branch 8

9. Sully Basins Stormwater Pond Retrofits
Post Construction - 0964DP
Capital Facilities/Utilities Design and Construction Division/Stormwater Construction Branch 9

10. Sully Basins Stormwater Pond Retrofits
Post Construction - 1481DP
Capital Facilities/Utilities Design and Construction Division/Stormwater Construction Branch 10

11. Sully Basins Stormwater Pond Retrofits
Post Construction - 0326DP
Capital Facilities/Utilities Design and Construction Division/Stormwater Construction Branch 11

12. Additional Information
For additional information, please contact
www.fairfaxcounty.gov/publicworks
Sharon North in the
DPWES Public Information Office
703-324-5500, TTY 711
Sharon.North@fairfaxcounty.gov
Sully Basins Stormwater Pond Retrofits
Capital Facilities/Utilities Design and Construction Division/Stormwater Construction Branch 12