Beneficial Uses of Dredged Material

Transcription

1 Beneficial Uses of Dredged Material Testing and Evaluating Dredged Material For Beneficial Use Suitability Richard A. Price ERDC-Environmental Laboratory

2 Why Beneficial Uses of Dredged Material? Annually, 300 to 400 million cubic meters of sediment Must continue to build and maintain waterways Restrictions on open-water disposal Space for upland disposal at a premium Reuse for beneficial purposes can save

3 Old Approach: Spoil New Approach: Resource Matching resources with needs Converting a liability into a desirable commodity (A waste, something bad) (A productive resource)

4 Beneficial Uses of Dredged Material Industrial / commercial Recreation Agriculture / Aquaculture Habitat development Beach nourishment Misc. / innovative

5 Dike 10B, Cleveland

6 Poplar Island, MD

7 Pt. Mouillee CDF

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10 Wetland Creation, LA

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12 St. Joseph, MI Airport Expansion

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14 NY Harbor Dredged Material, Bark Camp

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17 Grand Haven Schools, MI

18 Dredged Material to Landscapes

19 Construction Materials

20 Bad Press, Big Mess Water board may consider port fine By Hank Shaw - Record Staff Writer Published Saturday, January 29, 2005 After months of delays and excuses from the Port over its sale of toxic dredge spoils to state agencies and area construction firms, the patience of the Central Valley Regional Water Quality Control Board has worn thin. Dredge spoils contaminated with toxic metals were sold to dozens and possibly hundreds of sites across Northern Somewhere over the past 14 months.

21 Formula for Success A four-part formula is usually required for success Technical feasibility Legal / regulatory concerns Public support Economics Testing is cheaper than litigation!

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24 New Guidance Document (ERDC-DOER Program) Summary of Available Guidance and Best Practices for Determining the Suitability of Dredged Material for Beneficial Uses Web document with updates as necessary State regulatory guidance where available

25 Contaminant Status Contaminated? State regulatory guidance for reuse. Standards, cleanup levels, screening levels Treatment Options? Material may be treated to meet regulatory compliance. Phytoremediation, bioremediation, landfarming, etc. Adverse impacts? Restricted uses. Exposure/effects response, risk assessment.

26 Dredged Material Sediment Type Beneficial Use Options Engineered Uses Rock Gravel & Sand Consolidat ed Clay Silt/Soft Clay Mixture Land creation x x X X X Land improvement x x X X X Berm creation x x X X Shore protection x x X Replacement fill x x X Beach nourishment Agricultural/Product Uses x Capping x X X Construction materials x x X X X Environmental Enhancements Aquaculture X X X Topsoil X X Wildlife habitats x x X X X Fisheries improvement x x X X X Wetland restoration X X X

27 Soil Fertility

28 Blending for Success Dredged material can be blended with local waste products to meet specific needs Cellulose (yard wastes or wood and paper products Animal manures or other biosolids Industrial by-products

29 Greenhouse Screening

30 Greenhouse Results

31 Grand Haven Greenhouse Tests Leaf compost was blended with dredged material to select best performing blend This approach can be tailored to address specific needs

32 Challenges Negative press Perceptions on contaminated material Finding willing stakeholders Sustainable markets for materials produced Liability

33 Program Support Develop/update guidance Evaluate beneficial use projects New Product: Summary of Available Guidance for Determining Suitability of Dredged Material for Beneficial Uses

34 Beneficial Uses of Dredged Material Summary literature Engineering Manual on Beneficial Uses (EM ) Over 1300 documented examples Proceedings of national and regional seminars Corps/EPA Manual, Identifying, Planning, and Financing BU Projects Using Dredged Material Great Lakes Commission, Testing and Evaluation Dredged Material for BU.

35 Web Resources Dredging Operations Technical Support Beneficial Uses of Dredged Material Dredging Operations and Environmental Research Program doer.html

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