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118.01.17.501. Classification of Injection Wells

AR ADC 118.01.17.501Arkansas Administrative CodeEffective: December 25, 2021

West's Arkansas Administrative Code
Title 118. Department of Energy and Environment
Division 01. Arkansas Pollution Control and Ecology Commission
Rule 17. Rule NO. 17: Arkansas Underground Injection Control Code
Effective: December 25, 2021
Ark. Admin. Code 118.01.17.501
Formerly cited as AR ADC 014.04.7-17.501
118.01.17.501. Classification of Injection Wells
Currentness
Injection wells are classified (see 40 CFR 144.80) as follows:
(A) Class I
(1) Wells used by generators of hazardous wastes or owners or operators of hazardous waste management facilities to inject hazardous waste beneath the lowermost formation containing, within one-quarter mile of the well bore, an underground source of drinking water.
(2) Other industrial and municipal disposal wells which inject fluids beneath the lowermost formation containing, within one-quarter mile of the well bore, an underground source of drinking water;
(3) Radioactive waste disposal wells which inject fluids below the lowermost formation containing an underground source of drinking water within one quarter mile of the well bore.
(B) Class II
Wells which inject fluids:
(1) 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 waste waters 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.
(2) For enhanced recovery of oil and natural gas; and
(3) For storage of hydrocarbons which are liquid at standard temperature and pressure.
(C) Class III
Wells which inject fluids for extraction of minerals including:
(1) Mining of sulfur by the Frasch process;
(2) In situ production of uranium or other metals; this category includes only in situ production from ore bodies which have not been conventionally mined. Solution mining of conventional mines such as stopes leaching is included in Class V.
(3) Solution mining of salts or potash.
(D) Class IV
(1) Wells used by generators of hazardous waste or of radioactive waste, by owners and operators of hazardous waste management facilities, or by owners or operators of radioactive waste disposal sites to dispose of hazardous waste or radioactive waste into a formation which within one-quarter (1/4) mile of the well contains an underground source of drinking water.
(2) Wells used by generators of hazardous waste or of radioactive waste, by owners and operators of hazardous waste management facilities, or by owners and operators of radioactive waste disposal sites to dispose of hazardous waste or radioactive waste above a formation which within one-quarter (1/4) mile of the well contains an underground source of drinking water.
(3) Wells used by generators of hazardous waste or owners or operators of hazardous waste management facilities to dispose of hazardous waste, which cannot be classified under paragraph (A)(1) or (D) (1) and (2) of this section (e.g., wells used to dispose of hazardous waste into or above a formation which contains an aquifer which has been exempted pursuant to 40 CFR 146.04).
(E) Class V
Injection wells not included in Classes I, II, III, or IV. Examples of Class V wells are described in 40 CFR 144.81 and in Rule17.601 of this UIC Code.

Credits

Amended Dec. 25, 2021.
Current with amendments received through February 15, 2024. Some sections may be more current, see credit for details.
Ark. Admin. Code 118.01.17.501, AR ADC 118.01.17.501
End of Document