throughout the Rouge River has been sampled for environmental contamination.
These sediments could be contaminated with such pollutants as metals and
polychlorinated biphenyls (PCBs).
The 2003 Rouge River Remedial Action
Revision (RAP) provides information on contaminated sediments in the Rouge River. The RAP
states, "Sediment becomes contaminated when certain persistent pollutants, such
as metals or PCBs, and other organic chemicals are released into the environment.
These pollutants adhere to suspended sediment particles and eventually settle
to the bottom of the river. Contaminated sediments can degrade water quality
and cause direct toxic effects to organisms. While previous editions of the
RAP overestimated the extent and magnitude of contaminated sediments, they
are still a problem in the lower few miles of the river." RAP, page 56.
"The remaining known major deposits of contaminated sediments are in
the lower few miles of the river, adjacent to the navigation channel downstream
channelized concrete-lined portion of the Main Branch. These sediments contain
high concentrations of PCBs, PAHs, polychlorinated naphthalenes (PCNs), dioxins
and furans, and the endocrine disruption chemical nonylphenol. They are suspected
to be contaminated by metals. Sediments in the concrete channel also exert
a significant SOD (sediment oxygen demand), often resulting in low dissolved
oxygen concentrations in the summer. SOD in this part of the river is primarily
due to microbrial (microbial) decomposition of human wastes originating from
CSO and SSO discharges." RAP, p. 57
"Subsequent sampling of game fish in 2003 by MDEQ has lifted the PCB
fish consumption ban for the general public on carp, channel catfish and largemouth
bass cought (caught) in Newburgh Lake." RAP, p. 57
A presentation titled Restoration
of an Urban Lake: The Newburgh Lake Project was given discussing the
successful restoration of Newburgh Lake in the Rouge River Watershed.
related to contaminated
sediments in the Rouge River include:
There are several technical reports
and memos with information on the Rouge River website related
In addition, MDEQ has information on their website on sediments at; www.michigan.gov/deq
|See how the United States Environmental Protection Agency ranks
the concern of contaminated sediment throughout the United States