A Fairfax County, VA, publication
Department of Public Works and Environmental Services
Working for You!
Sequoia Park Pond...
Sequoia Park Pond (0705DP) Retrofit Project
Stormwater Planning, Capital Facilities/Utilities Design and Construction Divi...
Project Details
Sequoia Park Pond (0705DP) Retrofit Project
Stormwater Planning, Capital Facilities/Utilities Design and C...
Sequoia Park Pond (0705DP) Retrofit Project
Stormwater Planning, Capital Facilities/Utilities Design and Construction Divi...
Stormwater Planning, Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater
Construction ...
Stormwater Planning, Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater
Construction ...
Stormwater Planning, Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater
Construction ...
Sequoia Park Pond (0705DP) Retrofit Project
Stormwater Planning, Capital Facilities/Utilities Design and Construction Divi...
Additional Information
For additional Information, please call
www.fairfaxcounty.gov/dpwes
Stormwater Planning, Capital Fa...
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Sequoia Park Pond Retrofit Project

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Sequoia Park Pond (0705DP) Retrofit Project

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Sequoia Park Pond Retrofit Project

  1. 1. A Fairfax County, VA, publication Department of Public Works and Environmental Services Working for You! Sequoia Park Pond (0705DP) Retrofit Project Contract Number CN13125095 Project Number SD-000031-123 A Task Order No. 21 Mason District August 2014
  2. 2. Sequoia Park Pond (0705DP) Retrofit Project Stormwater Planning, Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch
  3. 3. Project Details Sequoia Park Pond (0705DP) Retrofit Project Stormwater Planning, Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch Description: The Sequoia Park Pond (0705DP) Retrofit Project was substantially completed on June 23, 2014. Sequoia Park Pond is an existing stormwater management pond located on the north side of the intersection at Edsall Road and Dublin Avenue. The existing pond was retrofitted to provide improved down stream water quality benefits and detention. The proposed water quality benefits realized by this project will be the removal of 9 lbs/year of total phosphorus, 41 lbs/year of total nitrogen and 1750 lbs/year of total suspended solids. Project Overview: • Removed the existing trickle ditch. • Excavated and constructed four micro-pools at a maximum depth of 18” below the pond bottom. • Extended the existing 18” RCP and installed a new EW-1 along with 2’ depth of river jack bedding • Constructed two rock weir structures • Replaced the existing 4’ trail by 12’ wide asphalt access road. • Installed a proposed driveway CG-9D entrance for maintenance road (under construction) • Restored the site with selected seed mix, planting plugs (trees will be planted in end of Sept. 2014). • Project Team: • Stormwater and Planning Division – Joseph P. Riley-Ryan • Utilities Design and Construction Division - Yousef Rayyan • Utilities Design and Construction Division - Kenneth Atkins • Surveyor - Gregory Harper
  4. 4. Sequoia Park Pond (0705DP) Retrofit Project Stormwater Planning, Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch Springfield, VA Tax-Map 0714-((30))-B Project Site
  5. 5. Stormwater Planning, Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch Sequoia Park Pond (0705DP) Retrofit Project Pre-Existing/New Conditions of the Inflow Locations Concrete inflow trickle ditch Before After Inflow locations were stabilized with coir matt and reinforced bedding material
  6. 6. Stormwater Planning, Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch Sequoia Park Pond (0705DP) Retrofit Project Pre-Existing/New Condition of the Pond Site micro pool No. 4 micro pool No. 3 micro pool No. 2 micro pool No. 1 existing outlet structure Edsall Road 12’ wide asphalt access road rock weir 1 and 2
  7. 7. Stormwater Planning, Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch Sequoia Park Pond (0705DP) Retrofit Project 4’ wide pre-existing trail 12’ wide new access road Pre-Existing Condition and New Condition of the Asphalt Trail Before After
  8. 8. Sequoia Park Pond (0705DP) Retrofit Project Stormwater Planning, Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch Before After
  9. 9. Additional Information For additional Information, please call www.fairfaxcounty.gov/dpwes Stormwater Planning, Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch Sequoia Park Pond (0705DP) Retrofit Project Irene Haske, Public Information Officer 703-324-5821, TTY 711 SWPDmail@fairfaxcounty.gov

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