lenox drive outfall restoration

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A Fairfax County, VA, publication Department of Public Works and Environmental Services Working for You! Lenox Drive Outfall Restoration Project Number SD-000031-043 Braddock District December 14, 2015

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Page 1: Lenox Drive Outfall Restoration

A Fairfax County, VA, publication

Department of Public Works and Environmental Services

Working for You!

Lenox Drive Outfall RestorationProject Number SD-000031-043Braddock District

December 14, 2015

Page 2: Lenox Drive Outfall Restoration

Lenox Drive Outfall Restoration

Maintenance and Stormwater Management Division

Looking downstream Looking upstream2

Page 3: Lenox Drive Outfall Restoration

Project DetailsLenox Drive Outfall Restoration

Maintenance and Stormwater Management Division

Description:The Lenox Drive Outfall Restoration Project was substantially completed on October 30, 2015. The project consisted of the restoration of 100 linear feet of eroded channel located in a Resource Protection Area and behind the properties of 4203 & 4205 Lenox Drive. The goals of the project were to address public safety concerns, stabilize a deeply eroded channel by using natural stream design techniques, and provide enhanced water quality.

Project Overview:• Construct an imbricated stone plunge pool and seven single step cross vane rock structures• Install rock cascade to tie in and match grades of the newly constructed outfall channel and the

receiving perennial stream • Revegetate with native plants, trees and shrubs to promote reforestation in disturbed areas• Provide reduction of 5.3 lbs of Total Nitrogen per year, 2.4 lbs of Total Phosphorus per year, and

4,639 lbs of Total Suspended Solids per year

Project Team:• Project Manager: Jack Meritt, Maintenance and Stormwater Management Division• Project Design: AMEC Environment & Infrastructure, Inc.• Landscape Architect: Suzy Foster, Stormwater Planning Division• Contractor: Utilities Unlimited, LLC

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Page 4: Lenox Drive Outfall Restoration

Maintenance and Stormwater Management Division

Project Location: Tax Map 058-3 Braddock DistrictLenox Drive Outfall Restoration

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Project Site

Page 5: Lenox Drive Outfall Restoration

Maintenance and Stormwater Management Division

Preconstruction ConditionsLenox Drive Outfall Restoration

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Page 6: Lenox Drive Outfall Restoration

Maintenance and Stormwater Management Division

Lenox Drive Outfall Restoration

Construction Photos

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Page 7: Lenox Drive Outfall Restoration

Before After

Lenox Drive Outfall Restoration

Maintenance and Stormwater Management Division 7

Page 8: Lenox Drive Outfall Restoration

Additional Information

For additional Information, please call

www.fairfaxcounty.gov/dpwes

Lenox Drive Outfall Restoration

Maintenance and Stormwater Management Division

Irene Haske, Public Information Officer703-324-5821, TTY 711

[email protected]

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