Entity
Name ENVIRONMENTAL OBJECTIVE
Type Independent
Definition 
Purpose:
This is the most comprehensive statement of an environmental objetive that we have related to
legislation.  The idea is to set a target level for some or all of the following:  resource, hazard,
sector, population and/or substance.  In real life legislation might not specify all four (4)
aspects...

Entity Category:
Principal

Entity Nature:
Static

Phase:
8

Attribute
Name Definition Is PK Is FK
env objective 
Purpose:
Identifies an environmental quality standard, although one might achieve the same via the sector,
resource, hazard, substance foreign keys...
 Yes No
issue   No Yes
sector   No Yes
regulation citation   No Yes
substance 
Purpose:
Another name for environmentally significant substance.  Uniquely identifies a subtance of
intersest to the EPA.
 No Yes
env quality control period 
Purpose:
Generally environmental quality standards are specified for a period, e.g., a year, multi-year
period, etc.
 No No
env quality effective date 
Purpose:
When the standard goes into effect.
 No No
env quality target level 
Purpose:
This attribute represents a host of more technical quality specifications, e.g., emission level for
a car, a change in a substance level within a geographic area, etc.
 No No