crestleigh way outfall restoration

A Fairfax County, VA, publication

Department of Public Works and Environmental Services

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Crestleigh Way Outfall RestorationProject Number SD-000031-043Lee District

December 14, 2015

Crestleigh Way Outfall Restoration

Maintenance and Stormwater Management Division 2

Project DetailsCrestleigh Way Outfall Restoration

Maintenance and Stormwater Management Division

Description:The Crestleigh Way Outfall Restoration project was substantially completed on September 14, 2015. The project consisted of the construction of a plunge pool and step pool system to stabilize a highly eroded outfall channel. The goals of the outfall project were to address public safety concerns, stabilize a deeply eroded channel by using natural stream channel design techniques, and provide enhanced water quality. Project Overview:• Constructed a plunge pool at the end of the 27” diameter reinforced concrete storm drainage pipe,

using large imbricated stone• Built four single step cross vane rock structures using natural stream design techniques• Tie newly constructed channel and existing channel into rock cascade• Planted native plants, trees and shrubs to promote reforestation in all disturbed areas• Provided reduction of 2.12 lbs of Total Nitrogen per year, 0.98 lbs of Total Phosphorus per year, and

1,861 lbs of Total Suspended Solids per year Project Team:• Design Engineer/Project Manager: Jack Meritt, Maintenance and Stormwater Management Division• Project Inspector: Tom Cameron, Maintenance and Stormwater Management Division• Contractor: Utilities Unlimited, LLC

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Maintenance and Stormwater Management Division

Project Location: Tax Map 091-3, Lee DistrictCrestleigh Way Outfall Restoration

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Project Site

Maintenance and Stormwater Management Division

Preconstruction Condition Crestleigh Way Outfall Restoration

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Maintenance and Stormwater Management Division

Crestleigh Way Outfall Restoration

Construction Photos

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Before After

Crestleigh Way Outfall Restoration

Maintenance and Stormwater Management Division 7

Additional Information

For additional Information, please call

www.fairfaxcounty.gov/dpwes

Crestleigh Way Outfall Restoration

Maintenance and Stormwater Management Division

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

SWPDmail@fairfaxcounty.gov

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