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E-M:/ Ecological Risk Assessment, Downstream from Dow Chemical, Midland, MI
- Subject: E-M:/ Ecological Risk Assessment, Downstream from Dow Chemical, Midland, MI
- From: "Alex J. Sagady & Associates" <firstname.lastname@example.org>
- Date: Mon, 01 Dec 2003 12:47:42 -0500
- Delivered-To: email@example.com
- Delivered-To: firstname.lastname@example.org
- List-Name: Enviro-Mich
- Reply-To: "Alex J. Sagady & Associates" <email@example.com>
FOR IMMEDIATE RELEASE
December 1, 2003
Contact: Patricia Spitzley
DEQ Funded Aquatic Ecological Risk Assessment Identifies Risks and
Impacts to Wildlife Resulting from Dioxin and Furan Contaminated
Sediments in the Tittabawassee River
Dioxin and furan contaminated sediments in the Tittabawassee River
downstream of the city of Midland pose significant reproductive,
and early life-stage mortality risk to fish-eating birds and
according to a recent report commissioned by the Department of
The 48-page Tittabawassee River Aquatic Ecological Risk Assessment
Report, prepared by Vermont-based Galbraith Environmental Sciences,
was initiated after investigations of river sediments and flood
soil conducted by the DEQ found dioxin and furan contamination.
contamination is pervasive throughout the Tittabawassee River and
flood plain downstream of Midland and the Dow Chemical plant.
"The report provides critical risk assessment data that will
the DEQ in determining the impacts and risks to wildlife posed by
and furan contamination and the appropriate response activities
to reduce those risks," said DEQ Director Steven Chester.
The conclusions of this study are based on the concentrations of
dioxins and furans in sediment and fish collected from the
River and from duck and chicken eggs collected from the
Specific conclusions reached from the aquatic risk assessment
* Carp, catfish, shad, and bass in the Tittabawassee River
of Midland are contaminated with dioxin and furans at
serious reproductive impairment to: 1) fish-eating
birds and mammals
that consume them (even as small portions of their diet), and 2)
species that are normally insensitive to dioxins and furans.
* Risks of reproductive impairment to fish-eating birds and mammals
resulting from dioxin contaminated sediments also exists within the
Saginaw River and inner Saginaw Bay, based on the limited amount of
sediment data that currently exists.
* Tittabawassee River ecological habitats downstream of Midland are
contaminated with dioxin and furans at levels that could result in
impacts to exposed wildlife species.
* Concentrations of dioxin and furans measured in waterfowl eggs
collected from the Shiawassee National Wildlife Refuge near the
Tittabawassee River were much higher than concentrations measured
waterfowl eggs collected from unimpacted areas.
* Concentrations of dioxin and furans confirmed to be present in
tissue and in waterfowl eggs provide actual site-specific
that supports the findings and conclusions of the aquatic
The 48-page report is now available on the DEQ webpage
or from the DEQ Saginaw Bay District
Office, 503 N. Euclid, Bay City, Michigan; or by calling Sue
Kaelber-Matlock, DEQ Remediation and Redevelopment Division, at
989-686-8025, ext. 8303.
Alex J. Sagady & Associates
Environmental Enforcement, Permit/Technical Review, Public Policy,
Evidence Review and Litigation Investigation on Air, Water and
Waste/Community Environmental and Resource Protection
PO Box 39, East Lansing, MI 48826-0039
(517) 332-6971; (517) 332-8987 (fax); firstname.lastname@example.org