Post Primacy Aquifer Exemptions
This post primacy aquifer exemption data depicts areas exempted by the US EPA for Class II injection after the March 14, 1983 Primacy agreement between the US EPA and CalGEM. This dataset represents an expansion of the original primacy exempted areas based on aquifer exemption packages that were approved between 1985 and 2021.
Data files
| Data title and description | Access data | File details | Last updated |
|---|---|---|---|
CSV | Download | CSV | 12/24/25 |
Shapefile | Download | ZIP | 12/24/25 |
GeoJSON | Download | GEOJSON | 12/24/25 |
KML | Download | KML | 12/24/25 |
Supporting files
| Data title and description | Access data | File details | Last updated |
|---|---|---|---|
ArcGIS Hub Dataset | HTML | 12/24/25 | |
ArcGIS GeoService | ARCGIS GEOSERVICES REST API | 12/24/25 |