RecyclingBeneficial Reuse of NonHazardous Dredged Sediment Materials for State Highway Construction

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Recycling/Beneficial Reuseof Non-Hazardous
Dredged Sediment Materials for State Highway
Construction
Charles C. Reith, PhD Tulane University Actin,
Inc. Innovative Reuse Forum 09 Dec 2004
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Agenda

• Stabilization Process and History
• MPA Application
• Business Model

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Stabilization Process

• Ambient Temperature Stabilization
• Anticipation of Reuse Scenario
• Testing for Environmental and Engineering
  Performance
• Regulatory/Stakeholder Acceptance Process

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(Oilfield Waste Contaminated Media Harbor
Sediments)
Stockpiled Solid Waste
Aggregate Sized to Reuse Specifications
Segregation of non recyclable debris
Transfer by front end loader
Removal of incompatible debris for recycling
or disposal
Combination of waste and aggregate in accordance
with reuse specifications
Stabilizing Agents

• Parking lots
• Roads and roadbed
• Foundations
• Dikes and levees
• Construction fill
• Work and storage
• pads

Stockpiled Construction Materials
Stabilization of waste/ aggregate formulation
to mix design specifications
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Suitability of End Product

• Efficacy Verification Test (EVT)
• Environmental Performance
• US EPA TCLP Tests
• Compliance with relevant standards
• State and federal drinking
• water MSCLs
• Engineering Performance
• Regulatory Status
• No Conveyance Notification
• No Deed Recordation
• Limits Generator Liability

ASTM tests
Bulk specific gravity Grain size
distribution Moisture content Plastic index /
liquid limit California bearing ratio
Marshall stability and flow Compressive
strength Percent loss-water immersion Los Angeles
Abrasion
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• STAKEHOLDER
• PROCESS
• Agency Approvals
• Public Presentations
• Exhibitions/ Workshops
• Media Coverage

• ENVIRONMENTAL
• BENEFITS
• Non-thermal
• Test as you go
• Resource Conservation

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Process/Product Economics
Net cost is treatment cost minus product value
60
US /ton 40
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Offsite Disposal
Treatment Cost
Thermal Treatment
Net Cost
Soil Washing
Bioremediation
Recoverable Value
Recycle/Reuse
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Major Louisiana Application

• Exxon Corporation Refinery in Baton Rouge,
  Louisiana
• Hydrocarbon contaminated soil converted to useful
  materials for
• closure of former waste lagoons
• cover systems for landfills
• roadbeds and parking lots
• tank aprons for runoff control
• Estimated net savings of 41-51 (1.2-1.5
  million/year)
• Recycled materials valued at 9-15 per ton
• 12 new jobs in vicinity of facility
• No land loss to waste disposal

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Engineering Performance Standard of Asphalt
Stabilized Base
3000
330
Increase over Minimum Specification
Standard Engineering Units
Mean
Measured Performance
2000
180
Minimum Required
1000
0
Marshall Stability
Compressive Strength
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Other Successful Applications
Client, Location, and Period of Performance
Nature of Contaminated Material
Total Volume of Material Treated
End Use of Treated Material
UPS Atlanta, GA Fina Oil Refinery Port Arthur,
TX Continental Emsco Dallas, TX Port of
Beaumont Beaumont, TX
UST Soil contaminated with gasoline and
diesel HC-contaminated Harbor Dredgings Hydroca
rbon and lead contamination HC-contaminated Harb
or Dredgings
30,000 tons 10,000 tons 2500 tons 3000
tons
ASB for Parking Lot ASB to Construct
Road ASB for Parking Lot ASB for Storage
Area
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Historical Application(tons treated per
year...by client)
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Potential Maryland Port Authority (MPA)
Application

• Test-based Selection of Nonhazardous Dredged
  Material for Treatment at MPAs Cox Creek Dredged
  Material Containment Facility (DMCF)
• Combination of Dredged Material (Feedstock) with
  Railed-in Raw Materials (e.g., Gravel)
• Non-thermal Stabilization
• Demonstrated Conformance to MD SHAs Specs for
  Road Base Material used in Hwy Construction

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Business Model

• What we believe will Work in Baltimore Harbor and
  the State of Maryland
• Who will Market and Sell our End Product (Actin
  or State of Maryland)
• Risk Sharing (Technical/Environmental/Cost)
• How we are Moving our End Product into a
  Successful Business Opportunity in Maryland

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What we Believe will Work

• Marylands Expanded Hwy Construction Program
  (e.g., building of ICC between I-270 and I-95)
  Creates Demand
• Actin can Treat Dredged Sediment Material at the
  DMCF to Meet MD SHA Standards for Highway
  Roadbase Material

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How we See Moving our End Product into a
Successful Business Opportunity (a)

• Environmental Advantages for Chesapeake Bay
• Promotion of Beneficial Recycling Mandate
• Demonstrated Conformance to MD State Specs for
  Environmental Performance
• Demonstrated Conformance to MD State Specs for
  Hwy Construction

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How we See Moving our End Product into a
Successful Business Opportunity (b)

• Competitive Economics
• MDOT Pays for RR of Baltimore Harbor Dredged
  Sediment Material
• MDOT Does Not Pay for Cost of Highway Road Base
• Jobs for State Workers/ Subcontractors
• Compliance with Minority Business Regulatory
  Requirements

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Risk Sharing

• Pre-process Dredged Sediment Testing
• Actin will statistically-sample and
  laboratory-test dredged sediment for worker
  safety and environment
• Post-process Engineered Performance Testing
• Actin will ensure that the end product meets all
  SHA requirements and specifications
• The SHA will ensure that the end product meets
  all State of Maryland specifications
• Actin and SHA will jointly represent that
  performance of placed end product meets requisite
  standards

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Who Will Market and SellOur End Product?

• The End Product will not be Marketed and Sold
  Commercially Ownership will be Retained by the
  MDOT
• The SHA will Mandate Use of the State-owned End
  Product by Hwy Construction Contractors
• Actin will Manage a Quality-control Program to
  ensuring that End Product meets SHA Specs
• The SHA will Test End Product to Ensure
  Conformance with State Hwy Specs