Post Primacy Aquifer Exemptions

Published by California Department of Conservation | State of California | Metadata Last Checked: December 28, 2025 | Last Modified: 2022-05-25T00:00:00.000Z

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.

Find Related Datasets

Click any tag below to search for similar datasets

Complete Metadata

identifier	c4dbaf0f-02fd-4ef5-874a-a3f1305ed5f6
issued	2021-05-14T00:26:36.000Z
theme	[ "Natural Resources" ]