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Innisvale Drive Outfall Restoration

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The Innisvale Drive Outfall Restoration project was substantially completed on December 11, 2018. The primary goals of this project in the Popes Head Creek Watershed were to address public safety concerns, stabilize a deeply eroded channel, and improve water quality. The natural channel design techniques used, such as a reinforced bed mix riffle sections and step pools, reduce the flow velocity, provide stability, and enhance water quality along the stream leading to the Chesapeake Bay. The disturbed areas of the site were restored with native shrubs, plants and trees.

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Innisvale Drive Outfall Restoration

  1. 1. A Fairfax County, VA, publication Department of Public Works and Environmental Services Working for You! Innisvale Drive Outfall Restoration Project Number: SD-000031-204 District: Springfield December 17, 2018
  2. 2. Innisvale Drive Outfall Restoration Stormwater/Maintenance and Stormwater Management Division Completed Project 2
  3. 3. Innisvale Drive Outfall Restoration Stormwater/Maintenance and Stormwater Management Division Project Details Description: The Innisvale Drive Outfall Restoration Project was substantially completed on December 11, 2018. The project consisted of the restoration of 470 linear feet of eroded outfall channel located in the Popes Head Creek Watershed. The goals of the project were to address public safety concerns, stabilize a deeply eroded channel by using natural channel design techniques, provide enhanced water quality and promote reforestation with native forest and riparian plantings. Project Overview:  Restore the outfall channel with imbricated stone step pools, reinforced bed mix riffle sections and rock steps  Stabilize channel banks using coir matting and native vegetation  Revegetate disturbed areas with native plants, trees, and shrubs to promote reforestation  Provide a reduction of 25 lbs. of Total Phosphorous per year, 77 lbs. of Total Nitrogen per year and 9,163 lbs. of Total Suspended Solids per year Project Team:  Project Managers: Jack Meritt, PE, Stephen Dombroski, Maintenance and Stormwater Management Division  Project Design: Wetland Studies and Solutions, Inc.  Construction Contractor: Utilities Unlimited, LLC  Project Inspector: Tom Cameron, Maintenance and Stormwater Management Division  Revegetation Contractor: GroundFX 3
  4. 4. Innisvale Drive Outfall Restoration Stormwater/Maintenance and Stormwater Management Division Project Location: Tax Map 076-1, Springfield District 4
  5. 5. Innisvale Drive Outfall Restoration Stormwater/Maintenance and Stormwater Management Division Pre-Construction Condition 5
  6. 6. Innisvale Drive Outfall Restoration Stormwater/Maintenance and Stormwater Management Division Construction Photos 6
  7. 7. Innisvale Drive Outfall Restoration Stormwater/Maintenance and Stormwater Management Division Before and After 7
  8. 8. Additional Information 8Stormwater/Maintenance and Stormwater Management Division Innisvale Drive Outfall Restoration For additional information, please contact Irene Haske 703-324-5821 Irene.Haske@fairfaxcounty.gov www.fairfaxcounty.gov/publicworks

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