[Federal Register Volume 72, Number 87 (Monday, May 7, 2007)]
[Notices]
[Page 25756]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E7-8655]


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ENVIRONMENTAL PROTECTION AGENCY

[FRL-8308-9]


Great Lakes Initiative (GLI) Toxicity Data Clearinghouse

AGENCY: Environmental Protection Agency (EPA).

ACTION: Notice.

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SUMMARY: The Great Lakes Initiative Toxicity Data Clearinghouse 
(Clearinghouse) is available for use by States, Tribes, and other 
interested parties. The online Clearinghouse, developed in cooperation 
with the United States Environmental Protection Agency (USEPA) 
Headquarters, Regions 2, 3, and 5, and the Great Lakes States and 
Tribes, acts as a central location for toxicity data, exposure 
parameters, and supporting documents used in deriving water quality 
criteria and guidance values in the Great Lakes Basin.

FOR FURTHER INFORMATION CONTACT: Brian Thompson, Water Quality Branch 
(WQ-16J), U.S. EPA, Region 5, Water Division, 77 West Jackson Blvd., 
Chicago, IL 60604, (312) 353-6066, [email protected].

SUPPLEMENTARY INFORMATION:

I. General Information

    The Clearinghouse was developed to support implementation of the 
Final Water Quality Guidance for the Great Lakes System (GLI). Data 
from the Clearinghouse can be shared among States and Tribes to assist 
them in developing or updating numeric water quality standards and 
guidance values for the protection of aquatic life, human health, and 
wildlife. In particular, States and Tribes can use the information in 
the Clearinghouse to help derive criteria for pollutants without 
specific numeric criteria published in the GLI (40 CFR Part 132).
    Data in the Clearinghouse can be viewed online or downloaded in 
spreadsheet format. The Clearinghouse includes PDF versions of ``fact 
sheets,'' which provide methodology information on how State agencies 
and USEPA derive criteria and guidance values. The Clearinghouse also 
includes links to GLI-related documents, including Federal Register 
notices and technical support documents, as well as formulas that allow 
users to calculate criteria according to GLI methodologies. To access 
the Clearinghouse go to http://www.epa.gov/gliclearinghouse.

    Dated: April 24, 2007.
Walter W. Kovalick, Jr.,
 Acting Deputy Regional Administrator, Region 5.
[FR Doc. E7-8655 Filed 5-4-07; 8:45 am]
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