An official website of the United States government.

We've made some changes to EPA.gov. If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Restoring Manistique River AOC (timeline)

Year Critical Actions
2013

MDEQ receives a $5.2 million grant from NOAA to develop and implement a dredging plan.

2010

MDEQ (MDNRE at the time) releases an updated BUI Restoration guide for each of the BUIs in the Michigan Areas of Concern.

2009

Sampling results meet the removal criteria for the beach closings impairment.

The third BUI is removed.

  • Beach closings
2008

New data reveals Manistique River has evolved to support a diverse fish community.

The second BUI is removed.

  • Loss of fish and wildlife habitat

Monitoring is conducted to evaluate the status of the restrictions on fish and wildlife consumption and restrictions on dredging beneficial use impairments.


MDEQ issues updated Guidance for Delisting Michigan’s Great Lakes Areas of Concern.

2007 Monitoring is conducted to evaluate the status of the Beach Closings beneficial use impairment.
2006

The first BUI is removed.

  • Degradation of benthos

Benthos monitoring continues at the site.


The Manistique River Public Advisory Council adopts the delisting targets included in the Guidance for Delisting Michigan's Great Lakes Areas of Concern.

Guidance for Delisting Michigan's Great Lakes Areas of Concern November 2005 (PDF)(61 pp, 508K) 

2005    An ecological risk assessment is released which focuses on those media that ecological receptors can be exposed to sediment and whole body fish.
2002

Water samples are collected in which five zones of concern ard identified. The sampling evaluates the extent of horizontal and vertical contamination in these five areas.


RAP Update for Manistique River and Harbor completed.

Manistique River Area of Concern Remedial Action Plan Update

2001 Confirmation sediment sampling demobilization of treatment systems and temporary containment systems is conducted.
2000 Dredging of contaminated sediments begins.
1999/2000 U.S. EPA conducts "touch-up" dredging based on confirmation sampling of the dredged areas.
1997/1998 U.S. EPA conducts Time Critical Removal Action No. 3 - Dredge Areas C (near CSO) & D (Harbor)
1996 U.S. EPA conducts Time Critical Removal Action No. 2- Dredging of Area B (North Bay)
1996

Washed gravel is placed in the North Bay area, located on the west side of the river upstream.


Manistique River RAP Update completed.

Manistique River Area of Concern Remedial Action Plan Update

1995 U.S. EPA begins annual dredging with a demonstration of new dredging technology.
1994 MPI prepares Engineering Evaluation/Cost Analysis
1993

U.S. EPA conductsTime Critical Removal Action 1 - Temporary cover


The Manistique River Public Advisory Council is officially established.

1987

Original Remedial Action Plan for Manistique River AOC completed.

1987 Manistique River Remedial Action Plan