Section 8-6 - Standards for the Underground Management of Hazardous or Toxic Wastes The underground management of wastes includes the temporary storage and the ultimate disposal of all hazardous or toxic wastes in below-surface receivers. The following standards apply to any underground storage or disposal of hazardous or toxic wastes.
(a) The below-surface receiver: - (i) Is an extensive sedimentary rock stratum or strata free of complex faulting and folding and distant from any underground water recharge area;
- (ii) Is adequately separated from aquifers both above and below;
- (iii) Has normal or low formation pressure and is capable of accepting the discharge without necessitating excessive discharge or injection pressure;
- (iv) Has slow movement of ambient formation fluid under the natural horizontal gradient and is not in an area of underground water discharge for the receiver;
- (v) Is located areally and stratigraphically so that an escape of waste to useable water resources would not be anticipated due to:
- (C) Mineral exploration or other drilling, or mineral development.
(b) The underground water in the receiver; - (i) Is not an economically available source of water or is unusable;
- (ii) Is confined by strata overlying and underlying the receiver; and
- (iii) Is classified as Class VI groundwater by this chapter.
(c) The discharge or waste: - (i) Will not create or result in a hazard to health or impair existing rights, and is not prohibited from subsurface disposal by Federal or State law or regulation;
- (ii) Will not degrade or decrease the availability of mineral resources, including oil and gas;
- (iii) Is compatible with the receiver and ambient water; and
- (iv) Can be controlled at all times.