Section 33.1-25-01-01 - Definitions1. "Abandoned well" means a well whose use has been permanently discontinued or which is in a state of disrepair such that it cannot be used for its intended purpose or for observation purposes.2. "Area of review" means the area of review surrounding an injection well described according to the criteria under title 40 CFR part 146, sections 146.6 and 146.63.3. "Casing" means a pipe or tubing of appropriate material, of varying diameter and weight, lowered into a borehole during or after drilling in order to support the sides of the hole and thus prevent the walls from caving, to prevent loss of drilling mud into porous ground, or to prevent water, gas, or other fluid from entering or leaving the hole.4. "Catastrophic collapse" means the sudden and utter failure of overlying strata caused by removal of underlying materials.5. "Cesspool" means a drywell that receives untreated sanitary waste containing human excreta and which sometimes has an open bottom or perforated sides, or both.6. "Director" means the director of the division of water quality of the department of environmental quality.7. "Drywell" means a well, other than an improved sinkhole or subsurface fluid distribution system, completed above the water table so that its bottom and sides are typically dry except when receiving fluids.8. "Exempted aquifer" means an aquifer or its portion that meets the criteria in the definition of "underground source of drinking water" but which has been exempted according to the procedures of subsection 2 of section 33.1-25-01-05.9. "Fluid" means material or substance which flows or moves whether in a semisolid, liquid, sludge, gas, or any other form or state.10. "Formation" means a body of rock characterized by a degree of lithologic homogeneity which is prevailing, but not necessarily, tabular and is mappable on the earth's surface or traceable in the subsurface.11. "Hazardous waste" means a hazardous waste as defined under title 40 CFR part 261, section 261.3.12. "Improved sinkhole" means a naturally occurring karst depression or other natural crevice found in volcanic terrain and other geologic settings which have been modified by man for the purpose of directing and emplacing fluids into the subsurface.13. "Injection zone" means a geological formation, group of formations, or part of a formation receiving fluids through a well.14. "Packer" means a device lowered into a well to produce a fluidtight seal.15. "Plugging" means the act or process of stopping the flow of water, oil, or gas into and out of a formation through a borehole or well penetrating that formation.16. "Point of injection" means the last accessible sampling point prior to waste fluids being released into the subsurface environment through a class V injection well. For example, the point of injection of a class V septic system might be the distribution box--the last accessible sampling point before the waste fluids drain into the underlying soils. For a drywell, it is likely to be the well bore itself.17. "Radioactive waste" means any waste which contains radioactive material in concentrations which exceed those listed under title 10 CFR part 20, appendix B, table II, column 2.18. "Sanitary waste" means liquid or solid wastes originating solely from humans and human activities, such as wastes collected from toilets, showers, wash basins, sinks used for cleaning domestic areas, sinks used for food preparation, clothes washing operations, and sinks or washing machines where food and beverage serving dishes, glasses, and utensils are cleaned. Sources of these wastes may include single or multiple residences, hotels and motels, restaurants, bunkhouses, schools, ranger stations, crew quarters, guard stations, campgrounds, picnic grounds, day-use recreation areas, other commercial facilities, and industrial facilities provided the waste is not mixed with industrial waste.19. "Septic system" means a well that is used to emplace sanitary waste below the surface and is typically comprised of a septic tank and subsurface fluid distribution system or disposal system.20. "Subsurface fluid distribution system" means an assemblage of perforated pipes, drain tiles, or other similar mechanisms intended to distribute fluids below the surface of the ground.21. "Well" means a bored, drilled or driven shaft, or a dug hole, whose depth is greater than the largest surface dimension; or an improved sinkhole; or a subsurface fluid distribution system.22. "Well injection" means the subsurface emplacement of fluids through a well.N.D. Admin Code 33.1-25-01-01
Adopted by Administrative Rules Supplement 370, October 2018, effective 1/1/2019.General Authority: NDCC 61-28-04; S.L. 2017, ch. 199, § 1
Law Implemented: NDCC 61-28-04