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Rule Revisions for Admincode R 324.101

2019-001 EG

Oil and Gas Operations
(Environment, Great Lakes, and Energy , Oil, Gas, & Minerals Division)

The DEQ is in the process of applying for primacy from the United States Environmental Protection Agency (U.S. EPA) to implement the Class II Underground Injection Control Program. This requires the DEQ to demonstrate that the State of Michigan has an equally effective program for the protection of underground sources of drinking water (USDWs) compared to federal standards in accordance with Section 1425 of the Safe Drinking Water Act. Definitions, in particular, are important for demonstrating the State of Michigan program is protecting the same USDWs and that USDWs are unequivocally protected from endangerment. The DEQ regulates Class II injection wells under Part 615, Supervisor of Wells, of the Natural Resources and Environmental Protection Act, 1994 PA 451, as amended, and the Oil and Gas Operations rules that are promulgated under Part 615. A USDW is described in current state rules as fresh water or mineral water that is either used for drinking water or that can potentially be used for drinking water and has fewer than 10,000 milligrams per liter total dissolved solids.