Entity
Name ENVIRONMENTAL STRESSOR
Type Independent
Definition
Purpose:
Incident sounds like a bad thing and that's probably what we have in mind here, although that may
be more myopia than necessity...

The impact incident may be an actual occurrence of a hazard.  Observation is as good a term as
occurrence.  Says there is something going on at a particular place and time that has already been
identified within EPA as an environmental hazard.

Would look across incidents to spot chronic incidents.

Entity Category:
Principal

Entity Nature:
Dynamic

Phase:
2

Attribute
Name Definition Is PK Is FK
stressor ix
Purpose:
Uniquely (and arbitrarily) identify an environmental incident.
Yes No
habitat disruption type   No Yes
incident and spill type   No Yes
routine chronic stressor source type   No Yes
routine chronic stressor type   No Yes
env impact incident date
Purpose:
When it happened
No No
env impact incident description
Purpose:
What happened?
No No