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Centreville Green Ponds Retrofits

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The Centreville Green Ponds 1 and 2 are located within the Centreville Green Subdivision; Pond 1 is located off Lee Highway and Pond 2 is located off Canada Goose Court within the Little Rocky Run Watershed. The project consisted of retrofitting the existing two ponds to improve water quality and storage volume. Improvement will increase the residence time of the ponds and provide enhanced water quality benefits. Retrofitting the Centreville Green Ponds allows for the facilities to provide a reduction of 10.7 pounds of total phosphorous, 82.3 pounds of total nitrogen, and 8,622.9 pounds of sediment per year.

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Centreville Green Ponds Retrofits

  1. 1. A Fairfax County, VA, publication Department of Public Works and Environmental Services Working for You! Contract No. CN17125172 Project No. SD-000031-153 District: Sully District Tax Map No. 055-3 April 20, 2019 Centreville Green Pond 1 (0738DP) & 2 (0739DP) Pond Retrofits
  2. 2. Project Details Centreville Green Pond 1 (0738DP) & 2 (0739DP) Pond Retrofits Capital Facilities/Utilities Design and Construction/Stormwater Construction Branch Description: • The Centreville Green Pond 1 (LR81-0001-0738DP) and Pond 2 (LR81-0002-0739DP) Retrofit Project has been substantially completed. The two ponds are located within the Centreville Green Subdivision; Pond 1 is located off Lee Highway and Pond 2 is located off Canada Goose Court within the Little Rocky Run Watershed. The project consisted of retrofitting the existing two ponds to improve water quality and storage volume. Improvement will increase the residence time of the ponds and provide enhanced water quality benefits. Retrofitting the Centreville Green Ponds allows for the facilities to provide a reduction of 10.7 pounds of total phosphorous, 82.3 pounds of total nitrogen, and 8,622.9 pounds of sediment per year. Project Overview: • Construction of forebays, high and low-marsh, vegetated wetland areas, micro-pools. • Modification of existing risers with orifice, bmp plates, trash racks. • Installed floatable trash collection devices at the inflow pipes as a Pilot Program. • Installation of Maintenance Access Grasscrete. • Upgrading the existing asphalt trail into 12’ Wide Maintenance Access Asphalt. • Installation of Standard Entrance Gutter CG-9 and installation of five removable locking bollards at pond 1. • Installation of Modified Entrance with three removable locking bollards at pond 2. • Restoring the site with selective seed mix, low marsh plugs, shrubs and trees. Project Team: • Project Manager - Suzy Harding / Dave Anglin, Stormwater Planning Division • Construction Manager - Yousef Rayyan, Utilities Design and Construction Division (UDCD) • Construction Inspector - Yagya Bhandari, UDCD • Right of Way Agent - Eric Lefcourt, Land Acquisition • Land Development Services - Anthony Wall
  3. 3. Centreville Green Pond 1 (0738DP) & 2 (0739DP) Pond Retrofits Capital Facilities/Utilities Design and Construction/Stormwater Construction Branch Tax Map 055-3, Sully District Pond No. 1 Pond No. 2
  4. 4. Centreville Green Pond 1 (0738DP) & 2 (0739DP) Pond Retrofits Capital Facilities/Utilities Design and Construction/Stormwater Construction Branch Pre-Existing Conditions Pond No. 1 Pond No. 2
  5. 5. Centreville Green Pond 1 (0738DP) & 2 (0739DP) Pond Retrofits Capital Facilities/Utilities Design and Construction/Stormwater Construction Branch Construction Activities – Pond 1
  6. 6. Capital Facilities/Utilities Design and Construction/Stormwater Construction Branch Centreville Green Pond 1 (0738DP) & 2 (0739DP) Pond Retrofits Construction Activities – Pond 2
  7. 7. Capital Facilities/Utilities Design and Construction/Stormwater Construction Branch Maintenance Access Centreville Green Pond 1 (0738DP) & 2 (0739DP) Pond Retrofits Pond No. 1 Post Construction Pond No. 1 Pre Construction
  8. 8. Capital Facilities/Utilities Design and Construction/Stormwater Construction Branch Centreville Green Pond 1 (0738DP) & 2 (0739DP) Pond Retrofits Maintenance Access Pond No. 2 Pre Construction Pond No. 2 Post Construction
  9. 9. Centreville Green Pond 1 (0738DP) & 2 (0739DP) Pond Retrofits Capital Facilities/Utilities Design and Construction/Stormwater Construction Branch Pond No. 1 Pond No. 2 Post Construction
  10. 10. Capital Facilities/Utilities Design and Construction/Stormwater Construction Branch Centreville Green Pond 1 (0738DP) & 2 (0739DP) Pond Retrofits Floatable Trash Collection System - Pilot Program
  11. 11. Additional Information For additional Information, please call www.fairfaxcounty.gov/dpwes Centreville Green Pond 1 (0738DP) & 2 (0739DP) Pond Retrofits Capital Facilities/Utilities Design and Construction/Stormwater Construction Branch Matthew Kaiser, Public Information Officer 703-324-8455, TTY 711 Matthew.Kaiser@fairfaxcounty.gov

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