The board may issue a water quality variance permit for a perimeter of operational pollution (POP) which meets the requirements of this chapter within which groundwater degradation is allowed only if groundwater quality standards of §§ 74:54:01:04 and 74:54:01:05 are met at the compliance monitoring point. The maximum aerial extent of the POP must be the shortest distance of the following:
The board may adjust the POP depending upon the hydrology, type of contaminants, and other factors that may affect the groundwater quality. These zones may allow for natural attenuation of contaminants to environmentally acceptable levels. A POP may not be allowed where existing natural processes may be unable to attenuate contaminants which may pose a risk to human health or the environment and where contaminants may not be contained within the POP.
S.D. Admin. R. 74:54:02:17
General Authority: SDCL 34A-2-28, 34A-2-30.
Law Implemented: SDCL 34A-2-24, 34A-2-25.