In determining the number, location, and construction of monitoring wells, and the frequency of sampling from monitoring wells, the following must be considered:

1. Whether any person relies on the underground source of drinking water affected or potentially affected by the injection operation;

2. The proximity of the injection operation to points of withdrawal of drinking water;

3. The local geology and hydrology;

4. The operating pressures and whether a negative pressure gradient is being maintained;

5. The toxicity and volume of the injected fluid, the formation water, and the process byproducts; and

6. The spatial distribution of the injection wells.

History: Effective January 1, 2009.

General Authority: NDCC 38-12-02

Law Implemented: NDCC 38-12-02