Section ENV.06.06 — Underground Injection Wells

(a) The use of any well or water system for the underground placement of any waste, surface or subsurface water, or any other substance is generally prohibited. The only exceptions to this general prohibition are when the persons proposing the underground placement have the written permission of the Tribal Council for their activities and the tribal Environmental Department has approved the placement as being:

(1) necessary for the construction, rehabilitation or operation of a well or water system, or

(2) necessary for the remediation of contaminated soil, groundwater or an aquifer.

(b) Injection wells classified as Class I, Class II, Class III and Class IV under the federal Underground Injection Control regulations of the SDWA (40 CFR pt. 144) are prohibited on the Reservation.

(c) The following types of wells are not regulated under this Section or the Underground Injection Control regulations of the federal SDWA:

(1) Individual or single family residential waste disposal systems such as domestic septic systems;

(2) Non-residential septic systems or similar waste disposal systems, if such systems are used solely for the disposal of sanitary waste and have the capacity to serve fewer than 20 persons a day;

(3) Any dug hole that is not used for the emplacement of fluids underground.