N.D. Admin. Code 33-25-01-02

Current through Supplement No. 392, April, 2024

Section 33-25-01-02 - Classification of injection wells

Injection wells are classified as follows:

1.Class I. Wells used to inject hazardous waste, radioactive waste, and other industrial and municipal disposal wells which inject fluids beneath the lowermost formation containing, within one quarter mile [402.34 meters] of the well bore, an underground source of drinking water.

2.Class II. Wells which inject fluids:

a. Which are brought to the surface in connection with natural gas storage operations, or conventional oil or natural gas production and may be commingled with wastewaters from gas plants which are an integral part of production operations, unless those waters are classified as a hazardous waste at the time of injection;

b. For enhanced recovery of oil or natural gas; and

c. For storage of hydrocarbons which are liquid at standard temperature and pressure.

3.Class III. Wells which inject for extraction of minerals or energy.

4.Class IV. Wells used to dispose of hazardous wastes or radioactive wastes into or above a formation which, within one quarter mile [402.34 meters] of the well, contains an underground source of drinking water and wells used to dispose of hazardous wastes which cannot be classified under class I wells, e.g., wells used to dispose of hazardous wastes into or above a formation which contains an exempted aquifer.

5.Class V. Injection wells not included in class I, II, III, IV, or VI.

6.Class VI. Wells that are not experimental in nature that are used for geologic sequestration of carbon dioxide beneath the lowermost formation containing an underground source of drinking water; or wells used for geologic sequestration of carbon dioxide that have been granted a waiver of the injection depth requirements pursuant to requirements at title 40 CFR part 146, section 146.95, or, wells used for geologic sequestration of carbon dioxide that have received an expansion to the areal extent of an existing Class II enhanced oil recovery or enhanced gas recovery aquifer exemptions pursuant to title 40 CFR part 146, section 146.4 and title 40 CFR part 144, section 144.7(d).

N.D. Admin Code 33-25-01-02

Effective June 1, 1983; amended effective November 1, 1989; June 1, 2001.

Amended by Administrative Rules Supplement 370, October 2018, effective 10/1/2018.

General Authority: NDCC 23-20.3, 61-28-04, 61-28.1-03

Law Implemented: NDCC 23-20.3, 61-28-04, 61-28.1-03