OMB Winter Mtg.-February 5-6, 2015

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Same as above for chemistry methods. (ii) Requirements for documentation of biological methods Same as above for chemistry methods. *Definitions based on U.S. Environmental Protection Agency Clean Water Act (CWA) and memo regarding Flexibility to Modify CWA Methods published November 20, 2007.

DOCUMENT REVISION HISTORY

DATE

DESCRIPTION

12/22/2014

Initial publication of document.

H:\Draft\Requirements\Pxxx – LSAC Consensus Document: Method Modifications and Analytical Requirements