environmental exposure level

initialism: EEL
https://doi.org/10.1351/goldbook.15668
Level (concentration or amount or a time integral of either) of a substance to which an organism or other component of the environment is exposed in its natural surroundings.
Source:
PAC, 2007, 79, 1153. (Glossary of terms used in toxicology, 2nd edition (IUPAC Recommendations 2007)) on page 1214 [Terms] [Paper]