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    Controlling Invasive Species In A Tidal Marsh
    Phragmites Management Case Study

    Location and Acreage:
    Wilmington, DE | ~40-Acres

    Project Timeframe: 
    September 2012

    Project Manager:
    John Phelps, Environmental Scientist & Senior Business Development Consultant

    Key Staff:
    Greg Blackham, Aquatic Specialist
    Gavin Ferris, Ecologist
    Wes Allen, Environmental Scientist and Regional Leader

    Site Description:
    This property is located immediately southwest of the Delaware Memorial Bridge in Wilmington, Delaware. The site consists of a 30 +/- acre pad site for a large hub shipping warehouse. Adjacent to the pad site is 40 +/- acres of tidal marsh. The tidal marsh is fed by Magazine Ditch, a direct man made tributary of the Delaware River. The tidal marsh was a monoculture of the invasive common reed Phragmites (Phragmites australis).

    Performing Phragmites Treatment

    Scope of Work:
    Invasive plant species eradication.

    Project Description:
    SOLitude Lake Management worked with our trusted partner Watershed ECO to identify the limits of the tidal marsh on the property. The non-native phragmites had overgrown 90% of the tidal marsh. New Castle County Delaware, Department of Planning required eradication of the Phragmites plant as a part of the site development requirements. SOLitude Lake Management sectioned the targeted 40 acres into 10 acre quarters. Using our amphibious Argo Conquest vehicle, SOLitude’s technicians applied a systemic herbicide to the phragmites in each of the target areas over the course of four days. After one treatment we were able to control 80% of the phragmites within the target area, fulfilling the County requirements.

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