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SLRIDT Site Background SLRIDT Site Remediation Activities (2006-2009) 2010 Tallas Island Winter Dredging Options Pros/Cons Winter Dredging Activities Challenges Experienced Project Benefits Overview

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SLRIDT Site Background

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SLRIDT Site Remediation 2006

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SLRIDT Site Remediation 2007

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SLRIDT Site Remediation 2008

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SLRIDT Site Remediation 2009

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2010 Tallas Island Compensatory Mitigation Project

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2010 Tallas Island Compensatory Mitigation Project

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2010 Tallas Island Compensatory Mitigation Project

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Options.. DDredge and Transport via Barge DDredge and Transport via Over-the-Road Trucks DDredge and Hydraulic Transport Tallas Island Winter Dredging

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Pros Expedite 2010 Construction Schedule Minimizes Environmental Impacts Minimizes Community Nuisances Allows Shallow Draft Dredge Equipment Access Cost savings Tallas Island Winter Dredging

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Cons Potential Hazards of On-Ice Dredge Work Schedule Constraints Temperature Dependent Vegetation Segregation Tallas Island Winter Dredging

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Challenges Experienced Tallas Island Winter Dredging

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Unseasonably Mild Temperatures Tallas Island Winter Dredging

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On-Ice Construction Safety Hazards Tallas Island Winter Dredging

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Frost Road Construction Tallas Island Winter Dredging

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Segregation of Vegetative Root Mass from Ice Tallas Island Winter Dredging

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Thin Ice Experiences Tallas Island Winter Dredging

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Extreme Working Conditions Tallas Island Winter Dredging

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Project Benefits Flexible 2010 Construction Schedule Minimized Environmental/Community Impacts Expedited Other SLRIDT Work Activities Monetary Impact Restoration of the Surrounding Environment Tallas Island Winter Dredging

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Special Thanks To: