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Cyanide Determination and Distillation using MICRO DIST system. Download USEPA Interim Approval Letters

The USEPA divides the United States in ten regions. Each region has it's own approval letter associated with it. For more information about USEPA regions please see the USEPA Region web page .

Select the letter below pertaining to your USEPA Region.

» Letter for Region 1   (PDF: 415KB)
(Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont)

» Letter for Region 2   (PDF: 288KB)
(New Jersey, New York, Puerto Rico and the U.S. Virgin Islands)

» Letter for Region 3   (PDF: 286KB)
(Delaware, Maryland, Pennsylvania, Virginia, West Virginia, and the District of Columbia)

» Letter for Region 4   (PDF: 288KB)
(Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and Tennessee)

» Letter for Region 5   (PDF: 308KB)
(Illinois, Indiana, Michigan, Minnesota, Ohio, and Wisconsin)

» Letter for Region 6   (PDF: 300KB)
(Arkansas, Louisiana, New Mexico, Oklahoma, and Texas)

» Letter for Region 7   (PDF: 301KB)
(Iowa, Kansas, Missouri, and Nebraska)

» Letter for Region 8   (PDF: 311KB)
(Colorado, Montana, North Dakota, South Dakota, Utah, and Wyoming)

» Letter for Region 9   (PDF: 301KB)
(Arizona, California, Hawaii, Nevada, and the territories of Guam and American Samoa)

» Letter for Region 10   (PDF: 304KB)
(Alaska, Idaho, Oregon, and Washington)

To view a PDF file, you must have Adobe Acrobat Viewer installed on your computer.
If you do not have the Acrobat Viewer installed, you may download it for free from Adobe's Web Site by clicking on the button to the right.


Last update:  August 27, 2008

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