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GLIN==> Re: E-M:/ Ecological Risk Assessment

I've not come across an ERA for either the Midland or Tittabawassee
areas.  (It would likely be more appropriate to do one to describe
eco risk from sediment of the Tittabawassee flood plain, IMHO.)

- Erik Janus

Erik R. Janus
Great Lakes Natural Resource Center
National Wildlife Federation
213 West Liberty, Suite 200
Ann Arbor, MI  48104-1322
phone (734) 769-3351, ext. 44
fax (734) 769 1449

>>> "Alex J. Sagady & Associates" <ajs@sagady.com> 12/04/02 03:13PM
Enviro-Mich message from "Alex J. Sagady & Associates"

Was the PCDD/PCDF contamination remediation matter
downstream of Dow-Midland subject to ecological risk assessment....see
new federal document below.....

[Federal Register: December 4, 2002 (Volume 67, Number 233)]
[Page 72173]
 >From the Federal Register Online via GPO Access



Generic Assessment Endpoints for Ecological Risk Assessments
(External Review Draft); Notice of Availability

AGENCY: Environmental Protection Agency.
ACTION: Notice of availability and opportunity for public comment.


SUMMARY: The U.S. Environmental Protection Agency (EPA) is announcing
60-day public comment period for the draft document titled Generic
Assessment Endpoints for Ecological Risk Assessments prepared by the
Agency's Risk Assessment Forum (RAF). The document is intended to
assist EPA during the process of ecological risk assessment in
selecting assessment endpoints, which are valued ecological entities
and attributes to be protected. EPA will consider the public comment
submissions in revising the document.

DATES: The 60-day public comment period begins December 4, 2002, and
ends February 3, 2003. Comments must be provided by February 3, 2003.

ADDRESSES: The draft is available via the Internet on the EPA Risk
Assessment Forum's home page at <A 
under the
What's New and External Review Drafts menus. Comments may be submitted
electronically, by mail, or in person, as described in the

FOR FURTHER INFORMATION CONTACT: For information on the public comment
period, please contact Scott Schwenk, U.S. EPA, Office of Research and
Development, National Center for Environmental Assessment (8601D),
Pennsylvania Ave. NW., Washington, DC 20460; telephone: 202-564-6667;
fax: 202-565-0062; e-mail: <A 


I. Submission of Comments

     Electronic comments are preferred and may be sent by e-mail to:
<A HREF="mailto:risk.forum@epa.gov";>risk.forum@epa.gov</A>.
comments may be mailed to the
Technical Information Staff (8623D), NCEA-W, U.S. Environmental
Protection Agency, 1200 Pennsylvania Avenue, NW., Washington, DC
or delivered to the Technical Information Staff at 808 17th Street,
NW., 5th Floor, Washington, DC 20006; telephone: 202-564-3261;
facsimile: 202-565-0050. In the case of paper comments, please submit
one unbound original with pages numbered consecutively, and three
copies of the comments. For attachments, provide an index, number
consecutively with the comments, and submit an unbound original and
three copies.
     Please note that all comments received in response to this notice
will be placed in a public record. For that reason, commentors should
not submit personal information (such as medical data or home
Confidential Business Information, or information protected by
copyright. Due to limited resources, acknowledgments will not be sent.

II. Background

     Ecological risk assessment is a process for evaluating the
likelihood that adverse ecological effects may occur or are occurring
as a result of exposure to one or more stressors. A critical early
in conducting an ecological risk assessment is to select assessment
endpoints. Assessment endpoints represent valued ecological entities,
and their attributes, upon which risk-management actions are focused.
Selecting assessment endpoints is often challenging because of the
diversity of species, ecological communities, and ecological functions
from which those involved in risk assessment can choose and because of
statutory ambiguity regarding what is to be protected. The purpose of
the RAF document is to assist EPA risk assessors by providing a set of
generic ecological assessment endpoints that can be considered and
adapted for use in specific ecological risk assessments, building on
existing EPA guidance and experience. The document is not
but rather is intended to be a useful starting point that is flexible
enough to be applied to many different types of ecological risk
assessments. The document is undergoing peer review concurrent with
public comment period described in this notice.

     Dated: November 12, 2002.
George W. Alapas,
Director, National Center for Environmental Assessment.
[FR Doc. 02-30763 Filed 12-3-02; 8:45 am]

Alex J. Sagady & Associates  http://my.voyager.net/~ajs/sagady.pdf 

Environmental Enforcement, Technical Review, Public Policy and
Communications on Air, Water and Waste/Community Environmental

PO Box 39,  East Lansing, MI  48826-0039
(517) 332-6971; (517) 332-8987 (fax); ajs@sagady.com 

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