| Entity |
| Name | LOCATION |
| Type | Independent |
| Definition |
Purpose: Entity Category: Principal Entity Nature: Dynamic Phase: 4 |
| Attribute |
| Name | Definition | Is PK | Is FK |
| location ix | Yes | No | |
| man made feature type | No | Yes | |
| facility type | No | Yes | |
| location type | No | Yes | |
| monitoring station type | No | Yes | |
| natural feature type |
Purpose: Unqiuely identifies an environmentally sensitive resource. |
No | Yes |
| program |
Purpose: Uniquely identifies an EPA program. |
No | Yes |
| organization id | No | Yes | |
| participant type | No | Yes |