EDF Standards

EDF is a data standard designed to transfer environmental data between organizations.  The first version of the standard was published in 1994 for the U.S. Army Corps of Engineers and is now widely used in the environmental community by both private and public organizations, including the State of California.

EDF describes electronic format specifications for information routinely delivered in paper form.  For example, EDF_LAB specifications represent an environmental laboratory report,   whereas EDF_COC specifications represents a chain-of-custody, etc.  Although EDF data looks like simple text files, it includes all the information required to reconstruct a legal defensible document (e.g., laboratory report, bore log, chain-of-custody, etc.).  And perhaps as important, EDF data from many sources may be combined into a single database without additional manipulation, achieving one time capture with multiple data uses. 

Standard Description
EDF_LAB Laboratory Report