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Department of Public Works and Environmental Services

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RABBIT BRANCH TRIBUTARY (PC9263)Contract Number CN13125084Project Number SD-000031-115Braddock District

May 13, 2014

RABBIT BRANCH TRIBUTARY (PC9263)

Capital Facilities/Utilities Design and Construction Division

Project DetailsRABBIT BRANCH TRIBUTARY (PC9263)

Capital Facilities/Utilities Design and Construction Division

Description:The Rabbit Branch Tributary project was substantially completed on April 24, 2014. The project consisted of restoring approximately 1,515 linear feet of highly degraded tributary of Rabbit Branch using natural channel design techniques.

Project Overview:• Establishment of new and stable channel geometry.

• Reconnection of the channel with its floodplain by raising the stream bed.

• Placement of a reinforced bed to prevent future incision.

• Stabilization of the stream bed and banks, reduction of erosion, and improvement of habitats through the installation of various in-stream structures to include: Root Wads, Soil Lifts, Log Sills, Log J-Hook, Rock Step Pools, and Modified Cross-Vanes.

• Restoration of the site with native trees, herbaceous plants, and grasses to promote natural reforestation.

• Reduction of 1,096 lbs. of total nitrogen per year, 85 lbs. of total phosphorus per year, and 81 tons of sediment per year leading to the Pohick Creek.

Project Team:

• Stormwater Planning Division – Sajan Pokharel• Urban Forest Management Division - Hugh Whitehead• Fairfax County Park Authority – Patricia Rosend, Ed Richardson • Utilities Design and Construction Division - Dave Becker• Utilities Design and Construction Division - Michael Stevens• Environmental Quality Resources, LLC – Steve Loughry• Wetland Studies and Solutions, Inc. – Bryce Aiken, Nathan Staley, Brian Chromey

Rabbit Branch Tributary (PC9263)

Capital Facilities/ Utilities Design and Construction Division

Commonwealth Blvd and DeQuincey Dr – Tax Map No. 069-3

Rabbit Branch Tributary (PC9263)

Capital Facilities/Utilities Design and Construction Division

Outlet from Retention Pond

Capital Facilities/Utilities Design and Construction Division

Rabbit Branch Tributary (PC9263)

Newly Restored Stream Channel

Before After

Rabbit Branch Tributary (PC9263)

Capital Facilities/ Utilities Design and Construction Division

Additional Information

For additional Information, please call

www.fairfaxcounty.gov/dpwes

Capital Facilities/Utilities Design and Construction Division

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

SWPDmail@fairfaxcounty.gov