Indiana Harbor and Canal Confined Disposal Facility (IHC CDF) construction, dredging, and facility operation timeline.
|IHC Comprehensive Management Plan (CMP)
|Included a Feasibility Report and Environmental Impact Statement that described conceptual design of the CDF and was used as the basis for incremental regulatory approval.
|IHC Maintenance and Dredging Design Documentation Report
|Outlined preliminary design of CDF to support federal cost estimate and project partnership agreement.
|Ongoing (started 2001)
|Monitoring of atmospheric conditions at the CDF and East Chicago High School for CDF chemicals of concern to evaluate the effect of CDF operations on surrounding community.
|Subsurface Investigation and Cutoff Slurry Wall Construction
|2002 - 2004
|Installation of soil-bentonite slurry wall along west, north, and east sides, and keyed into the clay layer below.
|CDF Dike Construction
|2004 - 2010
|Installation of clay dikes to contain dredged material. Construction took place in three phases based on availability of funds and real estate consideration.
|South Cutoff Wall Construction
|2007 - 2009
|Installation of approximately 2,000 linear feet of sealed sheet pile wall along the canal and keyed into the slurry wall and clay layer.
|Interim Wastewater Treatment Plant Operation
|2007 - 2012
|On-site groundwater treatment and off-site discharge. Groundwater extracted from temporary well points, treated, and discharged to Lake George Branch.
|Gradient Control System (GCS) Construction
|2007 - 2012
|Installation of 88 groundwater extraction wells, 42 monitoring wells, 2 ultrasonic sensors, and associated components for groundwater control at the site. Final calibration was conducted during the Performance Calibration Test in April, 2012.
|CDF South End Feature Construction
|2010 - 2012
|Construction of CDF support facilities and infrastructure including administrative building, storage facilities, access roads.
|Dredging and Facility Operations
|Ongoing (started 2012)
|Contract includes dredging and offloading operations as well as operation of the GCS and wastewater treatment plant.
|Additional Extraction Wells Construction
|Installation of eight additional extraction wells to GCS.
|Phase 2 Dike Project
|Expansion of the CDF exterior dikes began in July 2021.