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Restoring the Grand Calumet River AOC (timeline)

Year Critical Actions
2013 US Army Corps of Engineers begins navigational dredging and habitat restoration work at the Marquette Park Lagoon.

The second dredging operation and related restoration projects in the West Branch of the Grand Calumet River are completed.

The second BUI is removed.

  • Restrictions on drinking water consumption, or taste and odor removed.

An update to the stage 2.5 Remedial Action Plan is published that describes the extensive progress made since 1998. 

Update to the Stage 2.5 RAP (PDF)(32 pp, 1.3 MB, About PDFExit June 2012


Great Lakes Legacy Act cleanup in Zone A - West Branch Reaches 3,4,5 completed: dredging and related restoration projects, and the remediation of 580,000 cubic yards of sediment.

Great Lakes Legacy Act cleanup in the Roxana Marsh portion of the West Branch of Grand Calumet River is completed: 150,000 cubic yards of sediment remediated.

The first BUI is removed.

  • Added costs of agriculture and industry.

It is determined that there is no increased cost of shipping due to inability to dredge in the harbor and ship canal for environmental reasons.


U.S. Steel completes further in-stream restoration projects. They implement riffles, bank scalloping, boulder piles, wing deflectors with snags and native species planting along the riverbank.


The Beaches Environmental Assessment and Coastal Health Act takes effect.
IDEM provides funding to three AOC communities to be used towards daily E. coli sampling at their beaches.

A $56 million settlement is announced pursuant to the 2001 Natural Resource Damage Assessment.


IDEM and U.S. Fish and Wildlife Service release the sediment injury report for the Grand Calumet River as part of the Natural Resource Damage Assessment. The report identifies nine responsible parties that released hazardous substances into the water column.


The United States and the State of Indiana enter into a consent decree with the Hammond Sanitary District in which $2.1 million dollars are paid into the Grand Calumet River Restoration Fund trust. A schedule is established to implement the Wastewater Treatment Plant Compliance Program.


A collection of charts functioning as stage 2.5 Remedial Action Plan working documents is released. They track progress of previous, current and future projects completed up to 1998. 

Stage 2.5 Remedial Action Plan (PDF) (47 pp, 11.2 MB, About PDF) ExitSeptember 1998


The second stage of the Remedial Action Plan is published. 

The following links exit the site Exit


The first stage of the Remedial Action Plan is published. 

Stage I Remedial Action Plan (PDF)(143 pp, 7.9 MB, About PDFExit January 1991