Environmental Protection Agency August 11, 2006 – Federal Register Recent Federal Regulation Documents

This notice announces the availability for public comment of thirty TMDLs, and their administrative record files prepared by EPA Region 6 for certain waters listed in the Upper Canadian River and Turkey Creek Watersheds of Oklahoma, under section 303(d) of the Clean Water Act (CWA).

This notice announces the initial filing of a pesticide petition proposing the establishment of regulations for residues of acequinocyl (3-dodecyl-1,4-dihydro-1,4-dioxo-2-naphthyl acetate) and its metabolite 2-dodecyl-3-hydroxy-1,4-naphthoquinone (acequinocyl-OH) expressed as acequinocyl equivalents in or on tree nuts (Crop Group 14) commodities.

EPA expressed environmental concerns about wetland impacts and mitigation. Rating EC2.

Pursuant to the Federal Advisory Committee Act, Public Law 92- 463, notice is hereby given that the Mobile Sources Technical Review Subcommittee (MSTRS) will meet on October 4, 2006. This is an open meeting. The meeting will include discussion of current topics and presentations about activities being conducted by EPA's Office of Transportation and Air Quality. The preliminary agenda for the meeting, as well as the minutes from the previous (March 2006) meeting will be posted on the Subcommittee's Web site: https://www.epa.gov/air/caaac/ mobilesources.html. MSTRS listserver subscribers will receive notification when the agenda is available on the Subcommittee Web site. To subscribe to the MSTRS listserver, go to https://lists.epa.gov/cgi- bin/lyris.pl?enter=mstrs. The site contains instructions and prompts for subscribing to the listserver service.

This regulation establishes a tolerance exemption for residues of copper sulfate pentahydrate when applied in or on meat, fat and meat by-products of cattle, sheep, hogs, goats, horses, poultry, milk and eggs when applied as a bactericide/fungicide to animal premises and bedding.

Under the North American Free Trade Agreement (NAFTA), EPA and the Canadian Pest Management Regulatory Agency (PMRA) have agreed to harmonize their testing guidelines so that one set of tests can be used for the registration of pesticides in Canada and the United States. The NAFTA harmonized guidance for terrestrial field dissipation (TFD) studies are conducted to demonstrate the transformation, transport, and fate of pesticides under representative actual use conditions. These field studies are needed to substantiate the physicochemical, mobility, and biotransformation data from laboratory studies. Environmental fate studies have shown that pesticide dissipation may proceed at different rates under field conditions and may result in degradates forming at levels different from those observed in laboratory studies. The objective of this guidance document is to help ensure that TFD studies are conducted in a manner that will provide risk assessors and risk managers with more confidence in the data generated and with a better understanding of the assumptions and limitations of the data and estimated half-lives of the pesticide. The proposed guidance document for TFD studies was published in the Federal Register on June 15, 2005 (FRL-7713-7). After reviewing the public comments for this Notice, EPA developed a final guidance document, which can be found at: https:// www.epa. gov/oppefed1/ecoriskders/terrestrial field dissipation guidance.pdf. EPA's response to public comments can be found in the public docket: EPA-HQ-OPP-2005-0129.