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A Fairfax County, VA, publication
Department of Public Works and Environmental ServicesWorking for You!
Armfield Farm Sec. 5 Detention Basin RetrofitContract No. CN14125101Project No. SD-000031-096Task Order No. 20Sully District
December 3, 2014
Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch
Armfield Farm Sec. 5 Detention Basin RetrofitPost Construction
Project DetailsArmfield Farm Sec. 5 Detention Basin Retrofit
Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch
Description:
The Armfield Farm Sec. 5 Detention Basin Retrofit project was substantially completed on November 15, 2014. the existing SWM facilities is located Chantilly, VA along and Beech Down Drive south of Spring haven Drive. The project is to retrofit the existing pond to provide improved down stream water quality benefits and detention improvements. The water quality benefits realized by this project will be the removal of 12.04 lbs/year of total phosphorus, 54.83 lbs/year of total nitrogen and 2,358.26 lbs/year of total suspended solids.
Project Overview:
• Removed the existing trickle ditch.
• Excavated and constructed five micro pools.• Constructed 220’ long Channel lined with reinforced bed material at the bottom • Construct one foot deep plunge pool below the existing 32”X 60” culvert • Re-graded the pond as per the approved plan.• Restore the site with seed mix, live stakes and tree plantings.
Project Team:
• Stormwater and Planning Division – Vivian Bui• Utilities Design and Construction Division - Yousef Rayyan• Utilities Design and Construction Division - Kenneth Giles• Land Acquisition Division - Clinton Preston• Surveyor –David Simpson
Armfield Farm Sec. 5 Detention Basin Retrofit
Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch
Sully District, VA, Tax Map # 34-4
The Project Site
Armfield Farm Sec. 5 Detention Basin Retrofit
Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch
Pre-Existing Conditions
Armfield Farm Sec. 5 Detention Basin Retrofit
Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch
Pre-Existing Conditions
Armfield Farm Sec. 5 Detention Basin Retrofit
Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch
Post-Construction Conditions
Project Site During Heavy Rain Events 10/22/14
Armfield Farm Sec. 5 Detention Basin Retrofit
Capital Facilities/Utilities Design and Construction Division/Transportation and Stormwater Construction Branch
Post-Construction
Project Site During Heavy Rain Events 12/2/14
Before After
Armfield Farm Sec. 5 Detention Basin Retrofit
Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch
Additional Information
For additional Information, please call
www.fairfaxcounty.gov/dpwes
Ben Boxer, Public Information Officer703-324-5880, TTY 711
Ben. Ben Boxer, Public Information Officer703-324-5880, TTY 711
Ben. Ben Boxer, Public Information Officer703-324-5880, TTY 711
Irene Haske, Public Information Officer703-324-5500, TTY [email protected]
Capital Facilities/Utilities Design and Construction Division/Transportation Stormwater Construction Branch
