[Date Prev][Date Next][Date Index]

Re: E-M:/ Ecological Risk Assessment, Downstream from Dow Chemical, Midland, MI

Enviro-Mich message from Kirk Riley <rileyki@egr.msu.edu>

Here's the correct URL for the report, I think: 
It is dated October 2003 and titled "TITTABAWASSEE RIVER AQUATIC ECOLOGICAL 
DIBENZOFURANS."  Conducted by Galbraith, as the DEQ release states.


At 12:47 PM 12/1/2003 -0500, Alex J. Sagady & Associates wrote:

>December 1, 2003
>Contact:  Patricia Spitzley
>                  (517) 241-7397
>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, embryo,
>and early life-stage mortality risk to fish-eating birds and mammals
>according to a recent report commissioned by the Department of
>Environmental Quality.
>The 48-page Tittabawassee River Aquatic Ecological Risk Assessment
>Report, prepared by Vermont-based Galbraith Environmental Sciences, LLC,
>was initiated after investigations of river sediments and flood plain
>soil conducted by the DEQ found dioxin and furan contamination.  The
>contamination is pervasive throughout the Tittabawassee River and its
>flood plain downstream of Midland and the Dow Chemical plant.
>  "The report provides critical risk assessment data that will assist
>the DEQ in determining the impacts and risks to wildlife posed by dioxin
>and furan contamination and the appropriate response activities needed
>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 Tittabawassee
>River and from duck and chicken eggs collected from the Tittabawassee
>River floodplain.
>Specific conclusions reached from the aquatic risk assessment include:
>* Carp, catfish, shad, and bass in the Tittabawassee River downstream
>of Midland are contaminated with dioxin and furans  at  levels  posing
>serious reproductive  impairment  to: 1)  fish-eating birds and mammals
>that consume them (even as small portions of their diet), and 2) bird
>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 toxic
>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 in
>waterfowl eggs collected from unimpacted areas.
>* Concentrations of dioxin and furans confirmed to be present in fish
>tissue and in waterfowl eggs provide actual site-specific information
>that supports the findings and conclusions of the aquatic ecological
>risk assessment.
>The 48-page report is now available on the DEQ webpage
>www.michigan.gov/Tittabawassee; 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        http://www.sagady.com
>Environmental Enforcement, Permit/Technical Review, Public Policy,
>Evidence Review and Litigation Investigation on Air, Water and
>Waste/Community Environmental and Resource Protection
>Prospectus at:  http://www.sagady.com/sagady.pdf
>PO Box 39,  East Lansing, MI  48826-0039
>(517) 332-6971; (517) 332-8987 (fax); ajs@sagady.com

ENVIRO-MICH:  Internet List and Forum for Michigan Environmental
and Conservation Issues and Michigan-based Citizen Action.   Archives at

Postings to:  enviro-mich@great-lakes.net      For info, send email to
majordomo@great-lakes.net  with a one-line message body of  "info enviro-mich"