1. Grand Calumet River/Indiana Harbor Canal Feasibility Study
Discuss approach and considerations when planning habitat restoration for dredging projects
East Chicago Waterway Management District
Jim Wescott
April 23, 2015

2. Grand Calumet River & Indiana Harbor Canal
East Chicago Waterway Management District and EPA are funding an investigation and study of the GCR/IHC to develop a remedial design
ECWMD, EPA, and their consultant, Tetra Tech, want stakeholder feedback on remedial options, funding priorities, future end use, and other stakeholder groups not represented here today.

3. GCR/IHC Progress East Branch Actual Start spring 2013
Discuss WBGCR and how lessons learned applied to EBGCR.

4. Completed/In Progress
EBGCR USS Steel Section: Hydraulic Dredging
WBGCR Reaches 3-5: Mechanical Excavation and Capping
WBGCR Reaches 1&2:Hydraulic Dredging, Mechanical Excavation, Capping, and Habitat Restoration
EBGCR Reaches 4A&4B: Hydraulic Dredging, Mechanical Excavation, Capping, and Habitat Restoration
WBGCR Reaches 6&7:Mechanical Excavation and Capping
EBGCR Gary Section: Feasibility Study/Remedial Design
WB/EB GCR, Indiana Harbor Canal, and Lake George Canal Remedial Investigation and Feasibility Study

5. Current Project Area – GCR/IHC

6. Grand Calumet River Junction

7. Indiana Harbor Canal

8. Lake George Canal

9. RI/FS Tasks Remedial Investigation Feasibility Study Sediment Sampling
Pore Water Sampling
Source Control Evaluation
Bathymetric and Topographic Surveys
Geotechnical Sampling
Clean Up Goals Development
Remedial Alternative Screening and Evaluation

10. GCR Surface Sediment Total 16 PAH

11. GCR Subsurface Sediment Total 16 PAH

12. GCR Surface Sediment PCBs

13. GCR Subsurface Sediment PCBs

14. GCR Surface Sediment Metals

15. IHC Surface Sediment Total 16 PAH

16. IHC Subsurface Sediment Total 16 PAH

17. IHC Surface Sediment PCBs

18. IHC Subsurface Sediment PCBs

19. IHC Surface Sediment Metals

20. LGC Surface Sediment Total 16 PAH

21. LGC Subsurface Sediment Total 16 PAH

22. LGC Surface Sediment PCBs

23. LGC Subsurface Sediment PCBs

24. LGC Surface Sediment Metals

25. Remedial Options No Action Monitored Natural Recovery In Situ Capping
Environmental Dredging or Excavation

26. Grand Calumet River Options
Sediment
Dredge 10 feet of River (Majority of Impacted Sediment) and place 2 feet of sand over remaining sediment. Estimated $43,000,000
Dredge 3 feet of West Branch. Place active cap material over West and East Branches. Estimated $16,000,000.
Option 2 with targeted dredging in East Branch. Estimated $17,500,000
Habitat
Dredge and rebuild/restore Junction Marsh and the USS Lead Marsh. Estimated $13,000,000
Invasive Species control and replant both marshes. Estimated $1,000,000
Option 2 with partial dredging along river boundary. Estimated $7,500,000

27. Indiana Harbor Canal Options
Sediment
Dredge 8 feet of Canal (Majority of Impacted Sediment) and place 2 feet of sand over remaining sediment. Estimated $48,000,000
Option 1 with 1 foot sand. Estimated $44,000,000
Partial dredging for PCB areas and place 2 feet of sand over remaining sediment. Estimated $15,000,000
Option 3 with 1 foot sand. Estimated $11,000,000

28. Lake George Canal Options
Lake George Canal East of Railroad Bridge
Dredge area to navigation channel depth (10 feet) Estimated $8,000,000
Partial dredge to reduce resuspension (5 feet) Estimated $4,000,000
Lake George Canal between Railroad Bridge and Land Bridge
Partial dredge (5 feet) and 2 feet sand cap. Estimated $8,500,000
Six (6) foot sand cap. Estimated $4,500,000
Lake George Canal west of Land Bridge
Dredge 6 feet and 1 foot sand cap. Estimated $ 18,000,000
2.No Action

29. Selection Considerations
Cost
Permits
Site Access
Utilities and other Debris
Sediment Characteristics
Long Term Effectiveness
Potential for Recontamination
Future End Use
Stakeholder and Community Acceptance

30. Typical Remedial Tasks

31. Time Frame and Costs Seeking Project Partners
Begin Dredging spring 2016
Complete remedial action
Cost Ranges from $40 Mil to $145 Mil
Schedule heavily dependent on non-federal and federal funding
Construction could be broken into smaller pieces to facilitate funding and stakeholder priorities
Seeking Project Partners

32. Jim Wescott Tetra Tech jim.wescott@tetratech.com 312.201.7781
Questions?
Jim Wescott
Tetra Tech