This guidance describes procedures and criteria related to requesting, reviewing, archiving, posting, and updating environmental chemistry methods (ECM) reports and associated independent laboratory verification reports, as well as identifying which ECMs should be referred to the Biological and Economic Analysis Division for validation.

The procedures in this guidance are intended to increase uniformity in processing and reviewing ECMs in EFED. 

View environmental chemistry methods.

• Environmental Chemistry Methods Guidance (PDF)(13 pp, 118 K, Dec 20, 2012)
  The purpose of this guidance is to provide uniform procedures for processing environmental chemistry methods (ECM) in EFED.