South Dakota Administrative Rules › Title 74 - Department of Environment And Natural Resources › Article 74:02 - Water rights › Chapter 74:02:04 - Well construction standards › Section 74:02:04:36 - Alternative well construction requirements for certain Inyan Kara wells

Current through Register Vol. 51, page 10, July 15, 2024
Well construction as described in this section may be used for private
	 and reasonable domestic use wells and for noncommercial livestock watering
	 wells as an alternative to the construction required by §
									74:02:04:28. All other wells,
	 including public water supply wells, shall be constructed as required by §
									74:02:04:28. If any of the
	 following requirements cannot be met, the well construction must comply with
	 the requirements of §
									74:02:04:28. The following
	 alternative well construction may be used to construct and complete wells into
	 the Inyan Kara group if the top of the Inyan Kara is more than 1,000 feet below
	 the land surface. The Inyan Kara group includes the Fall River and the Lakota.
	 The alternative well construction may be used if the following requirements are
	 met:
(1) Surface casing is installed
  and pressure-grouted with cement grout to a depth of at least 300 feet or into
  an unweathered clay or shale formation, whichever depth is greater;
(2) The drill bit used to drill into the
  production aquifer is no larger than four and one-half inches in
  diameter;
(3) The size of the
  production casing installed below the grouted surface casing down to and the
  screen installed in the production aquifer is no larger than two inches in
  diameter;
(4) The production casing
  material installed below the surface casing and down to the production
  formation is type K hard copper, schedule 80 thermoplastic, brass, or stainless
  steel. The casing may not be installed under conditions that exceed the
  manufacturer's recommendations;
(5)
  Depending upon local conditions, packers and other construction techniques may
  be used that result in sealing the annulus between the drill hole and the
  casing above the production aquifer. The well driller shall construct the well
  to prevent movement of mud, silt, or other aquifer water into the production
  aquifer well. Packers made from burlap bags, gunny sacks, or similar materials
  are prohibited;
(6) The production
  casing and packers are not installed unless the weight of the drilling fluid is
  heavy enough to overcome aquifer pressures; and
(7) Only one casing is placed into the
  production aquifer of a new well. New wells double-cased into the production
  aquifer are prohibited. However, if the original casing becomes defective, the
  well may be rehabilitated by placing new casing inside the old defective
  casing.
See Appendix G at the end of this chapter.
General Authority:
SDCL
		46-2-5,
		46-6-20,
		46-6-27.
Law Implemented:
SDCL
		46-6-6.1,
		46-6-10,
		46-6-20,
		46-6-27.
Note:
Although this type of well construction may be
		less expensive below the cement-grouted surface casing, it is more likely to
		fail than a well constructed and grouted pursuant to §
											74:02:04:28. The success of this
		type of well construction is dependent upon the shale above the production
		aquifer sloughing off and filling and sealing the drill hole annulus outside
		the casing to prevent movement of high-pressure production aquifer water
		outside the casing, movement of other aquifer water, mud, or silt into the
		production aquifer, or movement of other aquifer water between
		aquifers.