Contaminated Sediments Program
Monitoring Links
[About PDF]
Download the Report
This project was made possible by a grant from U.S. EPA's Great Lakes
National Program Office with matching funds from the Maumee RAP and
members of TMACOG. Any reference to a trademark name or organization
does not represent an endorsement by the United States Environmental
Protection Agency (USEPA), the Ohio Environmental Protection Agency
(OEPA), or the City of Toledo.
Kurt Erichsen, P.E.
TMACOG
Vice President of Environmental
Planning
P.O. Box 9508
Toledo, OH 43697-9508
Additional information regarding this project, contact:
Demaree Collier
Environmental Scientist
Great Lakes National Program
Office
Ecological Screening-Level Risk Assessment of the
Lower Ottawa River
Prepared for:
U.S. Environmental Protection Agency
Great Lakes National Program Office
77 W. Jackson Boulevard (G-17J)
Chicago, Illinois 60604
and
Limno-Tech, Inc.
501 Avis Drive
Ann Arbor, Michigan 48108
Prepared by:
Parametrix
5808 Lake Washington Blvd. NE, Suite 200
Kirkland, WA 98033-7350
The Ottawa River Risk Assessment project was started in late 1999
as a partnership between Toledo Metropolitan Area Council of
Governments (TMACOG), Ohio EPA, and the Maumee RAP. It was completed
in November 2001. Since 1987 when the RAP was established,
businesses and governmental agencies have invested millions of
dollars to identify and remediate sources of pollution going into
the Ottawa River in Toledo. With those sources removed, the next
step in restoration of the river is with the sediments.
The project was administered by TMACOG in conjunction with other
agencies of the Ottawa River Remediation Team (ORRT). These include
Ohio EPA, Ohio Department of Health, US Fish & Wildlife Service, and
the City of Toledo. This team, through a competitive process,
selected Limno Tech Inc of Ann Arbor as its prime contractor to
prepare the Risk Assessments. Limno Tech in turn subcontracted the
Human Health Assessment to Intertox and the Ecologic Risk Assessment
to Parametrix.
An ecological screening-level risk assessment (SLRA) of the lower
Ottawa River was conducted as an initial effort to prioritize chemical hot
spots for possible remediation. The SLRA followed the U.S. EPA’s standard
ecological risk assessment guidelines and included the following sections:
- Problem Formulation;
- Exposure Characterization;
- Effects Characterization; and
- Risk Characterization.
To
view a PDF file in its entirety, please obtain the most recent
edition
of the free Adobe
Acrobat reader.
|
Ottawa River Final Human Health Risk
Assessment Report (PDF 935Kb, 238 pages) |
|
Ottawa River Final Screening-Level Risk
Assessment Report (PDF 2.51Mb, 93 pages) |
| Figure D-1
|
Lead Concentrations in Sediment: June 2000
Data Compared to Threshold and Probable Effects Levels
(PDF 551Kkb, 1 page) |
| Figure D-2 |
PCB Concentrations in Sediment: June 2000
Data Compared to Threshold and Probable Effects Levels
(PDF 555kb, 1 page) |
| Figure D-3 |
Total PAH's in Sediment
(PDF 543kb, 1 page) |
| Figure D-4a |
River Mile 0-3.2 Lead Concentrations in
Sediment: 1998 Data Compared to Threshold and Probable Effects
Levels (PDF 582kb, 1 page) |
| Figure D-4b |
River Mile 3.2-4.9 Lead Concentrations in
Sediment: 1998 Data Compared to Threshold and Probable Effects
Levels (PDF 543kb, 1 page) |
| Figure D-4c |
River Mile 4.9-6.5 Lead Concentrations in
Sediment: 1998 Data Compared to Threshold and Probable Effects
Levels (PDF 5570kb, 1 page) |
| Figure D-4d |
River Mile 6.5-8.8 Lead Concentrations in
Sediment: 1998 Data Compared to Threshold and Probable Effects
Levels (PDF 562kb, 1 page) |
| Figure D-5a |
River Mile 0-3.2 PCB Concentrations in
Sediment: 1998 Data Compared to Threshold and Probable
Effects Levels (PDF 585kb, 1 page) |
| Figure D-5b |
River Mile 3.2-4.9 PCB Concentrations in
Sediment: 1998 Data Compared to Threshold and Probable
Effects Levels (PDF 572kb, 1 page) |
| Figure D-5c |
River Mile 4.9-6.5 PCB Concentrations in
Sediment: 1998 Data Compared to Threshold and Probable
Effects Levels (PDF 571kb, 1 page) |
| Figure D-5d |
River Mile 6.5-8.8 PCB Concentrations in
Sediment: 1998 Data Compared to Threshold and Probable
Effects Levels (PDF 573kb, 1 page) |
| Figure D-6a |
River Mile 0-3.2 Total PAH's in Sediment:
1998 Data Compared to Sediment Quality Guidelines (PDF
578Kb, 1 page) |
| Figure D-6b |
River Mile 3.2-4.9 Total PAH's in
Sediment: 1998 Data Compared to Sediment Quality Guidelines
(PDF 535kb, 1 page) |
| Figure D-6c |
River Mile 4.9-6.5 Total PAH's in
Sediment: 1998 Data Compared to Sediment Quality Guidelines
(PDF 564kb, 1 page) |
| Figure D-6d |
River Mile 6.5-8.8 Total PAH's in
Sediment: 1998 Data Compared to Sediment Quality Guidelines
(PDF 554kb, 1 page) |
| Figure E-3
|
Lead and PCB Concentrations in Sediment:
June 2000 Data Compared to Threshold and Probable Effects Levels
(PDF 584kb, 1 page) |
| Table A-1a |
Summary Statistics for Measured
Chemical Concentrations in Fish (Data from Inventory 20 [2000])
(PDF 82kb, 5 pages) |
| Table A-1b |
Summary Statistics for Measured
Chemical Concentrations in Fish, Whole Organism, from Maumee Bay
(Data from Inventory 13 [1999]) (PDF 75kb,
1 page) |
| Table A-2a |
Summary Statistics for Measured
Chemical Concentrations in Sediment (Data from Inventory 15
[1998]) (PDF 84kb, 5 pages) |
| Table A-2b |
Summary Results for Measured Chemical
Concentrations in Sediment (Data from Inventory 20 [2000])
(PDF 95kb, 8 pages) |
| Table A-3 |
Summary Statistics for Measured
Chemical Concentrations in Surface Water (Data from Inventory 20
[2000]) (PDF 90kb, 8 pages) |
| Table A-4 |
Chemical Concentrations in
Invertebrate Tissues Estimated from Measured Sediment
Concentrations (PDF 82kb, 2 pages) |
| Table B-1 |
Acute Toxicity Screening Doses for
Wildlife (PDF 84kb, 3 pages) |
| Table B-2 |
Chronic Toxicity Screening Doses for
Wildlife (PDF 83kb, 3 pages) |
| Table B-3 |
Acute and Chronic Surface Water
Toxicity Screening Values for Aquatic Life (PDF 82kb,
2 pages) |
| Table B-4 |
Sediment Toxicity Screening Values for
Aquatic Life (PDF 79kb, 2 pages) |
| Table B-5 |
Residue-Based Tissue Toxicity
Screening Values for Fish (PDF 78kb,
1 page) |
| Table C-1 |
Acute Hazard Quotients for Wildlife
Receptors in the Lower Ottawa River (PDF 90kb,
12 pages) |
| Table C-2 |
Chronic Hazard Quotients for Wildlife
Receptors in the Lower Ottawa River (PDF 91kb,
12 pages) |
| Table C-3 |
Acute and Chronic Hazard Quotients for
Bald Eagles Feeding on Fish Species in Maumee Bay (PDF 74kb,
1 page) |
| Table C-4 |
Acute and Chronic Hazard Quotients for
Aquatic Life Based on Surface Water Exposures (PDF 85kb,
4 pages) |
| Table C-5 |
Hazard Quotients for Aquatic Life
Based on Sediment Exposures (Data from Inventory 15 [1998])
(PDF 105kb, 14 pages) |
| Table C-6 |
Hazard Quotients for Aquatic Life
Based on Sediment Exposures (Data from Inventory 20 [2000])
(PDF 103kb, 12 pages) |
| Table C-7 |
Tissue Residue-Based Hazard Quotients
for Aquatic Life (PDF 72kb, 1 page) |
| |
|
![[logo] US EPA](http://www.epa.gov/epafiles/images/logo_epaseal.gif){kind=logo}