New Jersey Dept. of Transportation Office of Maritime Resources

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New Jersey Dept. of TransportationOffice of
Maritime Resources
Environmental Management of Maritime
Infrastructure An Introduction to Beneficial
Use of Dredged Material
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Beneficial Use of Dredged Materials

• History and rationale for the policy of
  beneficial use in NY/NJ Harbor, USA
• Processing dredged material
• Applications in construction/remediation
• Issues and Lessons Learned

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Silty Dredged Material

• Sand, silt or clay particles
• Not soil (but may be amended and used as soil
  more on that later today)
• Storm events
• Landside runoff
• May contain contaminants

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Historical Dredged Material Management in NY/NJ
Harbor
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Aquatic Disposal
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Confined Upland Disposal
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Beach Replenishment
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1993 Mudlock begins
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What was Mudlock all about?

• Sediment and soil particles adsorb and
  concentrate pollutants
• Contaminants in sediments can be accumulated in
  organisms that are eaten by humans
• Increased public awareness and concern about
  industrial contaminants, particularly in the
  ocean
• No alternatives ready and available
• Cost of disposal rose from 5 to 130 per cubic
  yard overnight.
• Threatened the Ports plans to deepen harbor
  channels

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Regional Dredged Materials Management Plan (DMMP)

• Reduce Need to Dredge
• Reduce Contamination
• Beneficially use as much as possible
• Dispose of only what cannot be used

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Confined Aquatic Disposal (CAD)
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DMMP Point ThreeBeneficially use as much as
possible

• Construction Aggregate/Beach Replenishment
• Remediation Material (HARS)
• Fill and Capping Material
• Value added products (decon)
• Capacity and Throughput
• Economics (5/cyd - 47/cyd)
• Health and Safety

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Landfill Capping
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Brownfield Reclamation
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Abandoned Mine Reclamation
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Characteristics of Good Sites

• Historically Contaminated
• Industrial or Commercial Use
• Not near residences, schools, churches, or parks
• Desire for Remediation among PRPs and Owner
• Fill and/or capping needed
• Easy Barge, Rail or Truck Access

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Sediment Stabilization
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Raw Dredged Material
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Debris
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Dewatering (Decanting)

• 24 Hour Settling time
• Discharge to same water body or through
  permitted discharge

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In-barge Mixing

• 18,000 CY/day
• Poor control of mix

• Must be offloaded within 24 hours

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Pugmill Mixing
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Processed Dredged Material
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Transportation and Placement
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Dredging Logistics

• 5-20,000 cyd per day
• 24/7 operation
• Weather delays
• Equipment delays
• Debris

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Bayonne Landfill2,000,000 cyd
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Elizabeth Landfill800,000 cyd
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Bark Camp Mine Demonstration400,000 cyd
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Program Successes

• OENJ Elizabeth 800,000 cyd
• Koppers/Seaboard 1,000,000 cyd
• OENJ Bayonne 2,000,000 cyd
• Port Liberte 200,000 cyd
• Linden Landfill 500,000 cyd
• Bark Camp Mine 400,000 cyd
• Penn and Fountain 200,000 cyd
• 1E Landfill 800,000 cyd
• FDP Enterprises 250,000 cyd
• Encap 1,000,000 cyd
• Total to date 7,150,000 cyd

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Encap Golf Holdings

• 500 hectares acres of former landfills
• Adjacent to NJ Turnpike
• 1.5 billion liters of leachate per year
• 300 million cleanup
• 150 hectares of wetlands

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Encap Golf Holdings

• 3.5 mcm ADM
• Eliminate leachate
• Restore and preserve 150 hectares of wetlands
• 4 - 18 hole golf courses
• 1.5 million square feet of office, retail, and
  recreational space
• 2000 housing units
• 20 million annual tax revenue
• 7,000 jobs

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Regulation of Clean Sediment
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Non-Residential CC
Avg. NY/NJ DM
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Regulation of challenged material
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Upland Beneficial Use as a Risk Reduction Strategy

• Reduction 1 Removal of contaminated sediment
  from sensitive aquatic environment
• Reduction 2 Eliminate contaminant transfer to
  ocean
• Reduction 3 Capping of highly contaminated
  terrestrial soils
• Reduction 4 Providing economic incentive to
  construct engineering controls on contaminated
  sites.

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Dredged Material as Construction Aggregate

• Common or engineered fill
• Grading and cover layers
• Recycling Operations
• Habitat Creation

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Highway Construction

• 80,000 cyd dredged material
• 2 monitored berms
• Settlement, strength and workability
• No significant environmental impacts or human
  health exposure concerns
• 8/cyd cost escalation over conventional
  materials
• Best if placed immediately requires remixing if
  stored
• Heavily impacted by freeze/thaw

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Old Confined Disposal Facilities
Resource for construction materials AND Resource
for future dredged material management
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Beneficial Use of CDF Material
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Free Fill!!
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Riverwinds Golf Course160,000 cyd
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Palmyra Cove Beneficial Use Technology Campus
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Jersey Flats Habitat Enhancement
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Economics
Line Item Costs
Line Item Revenue

• Dredging
• Land
• Design/Permitting
• Equipment
• Stabilization
• Transportation
• Placement
• Monitoring
• Host Fee

• Tipping Fee - sediment
• Tipping Fee - waste materials for stabilization
• Savings on fill/cap
• Sale of Land

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Implementation Challenges
Government
Proponent

• Streamline Contracting
• Improve Planning
• Improve Dredging Technology
• Regional Cooperation

• Partnering with Dredgers
• Flexibility on Fill
• No tipping fees
• Cooperation with Agencies

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Bayshore Recycling, Keasbey, NJ

• Characteristics of a Regional Dredged Material
  Processing Facility
• Barge access
• Multiple treatment options, including
  decontamination
• On-site analytical capability
• At least 50,000 cyd storage
• Ready access to aggregate and soil markets via
  road, rail and barge
• Alternative work lines for year-round operation

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Environmental Manufacturing