Wyoming Administrative Code
Agency 020 - Environmental Quality, Dept. of
Sub-Agency 0011 - Water Quality
Chapter 24 - Class VI Injection Wells and Facilities Underground Injection Control Program
Section 24-12 - Minimum Criteria for Siting Class VI Wells
Universal Citation: WY Code of Rules 24-12
Current through September 21, 2024
(a) All Class VI wells shall be sited in areas with a suitable geologic system. The geologic system shall be comprised of:
(i) An injection
zone of sufficient areal extent, thickness, porosity, and permeability to
receive the total anticipated volume of the carbon dioxide stream;
and
(ii) Confining zones that are
free of transmissive faults or fractures and of sufficient areal extent and
integrity to contain the injected carbon dioxide stream and displaced formation
fluids and allow injection at proposed maximum pressures and volumes without
initiating or propagating fractures in the confining zones or causing
non-transmissive faults to become transmissive.
(b) Owners or operators of Class VI wells shall identify and characterize additional zones, if they exist, that will impede vertical fluid movement, allow for pressure dissipation, and provide additional opportunities for monitoring, mitigation, and remediation. Faults and fractures that transect these zones shall be identified.
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