reglab/statecodes huggingface dataset:
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.5 - Disciplinary Actions › Rule 36.21.504 - DISCIPLINARY ACTIONS (REPEALED)

Current through Register Vol. 13, July 5, 2024
37-43-202, MCA; IMP,
					 37-43-203,
					 37-43-306, and
					 37-43-311,
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.5 - Disciplinary Actions › Rule 36.21.505 - FORFEITURE OF BOND OR OTHER SECURITY (REPEALED)

Current through Register Vol. 13, July 5, 2024
37-43-202, MCA; IMP,
					 37-43-203,
					 37-43-306, and
					 37-43-311,
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.5 - Disciplinary Actions › Rule 36.21.506 - LICENSURE REINSTATEMENT AFTER REVOCATION (REPEALED)

Current through Register Vol. 13, July 5, 2024
37-43-202, MCA; IMP,
					 37-43-203 and
					 37-43-311,
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.601 - CONSTRUCTION AND MATERIALS REQUIREMENTS AND STANDARDS (REPEALED)

Current through Register Vol. 13, July 5, 2024
Sec.
					 37-43-202, MCA; IMP, Sec.
					 37-43-101,
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.631 - CODE OF OCCUPATIONAL CONDUCT (REPEALED)

Current through Register Vol. 13, July 5, 2024
Sec.
					 37-43-202, MCA; IMP, Sec.
					 37-43-101,
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.632 - WELL LOGS (REPEALED)

Current through Register Vol. 13, July 5, 2024
Sec.
					 37-43-202, MCA; IMP, Sec.
					 37-43-101,
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.633 - ABANDONED WELLS (REPEALED)

Current through Register Vol. 13, July 5, 2024
Sec.
					 37-43-202, MCA; IMP, Sec.
					 37-43-101,
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.634 - DEFINITIONS

Current through Register Vol. 13, July 5, 2024
For purposes of this chapter, the following terms shall
				  apply.
(1) "Abandoned water well":
(a) "permanent" means a well whose use has
				been permanently discontinued; and
(b) "temporary" means a well from which a
				drilling rig has been removed from the well site prior to completing or
				altering the well.
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.635 - PUBLIC, COMMUNITY, NONCOMMUNITY PUBLIC, AND MULTIPLE-USER WATER SUPPLY WELLS

Current through Register Vol. 13, July 5, 2024
(1) All wells for
				public, community, noncommunity public, and multiple-user water supply system
				use are governed by those construction standards set forth in the Department of
				Environmental Quality rules (ARM Title 17, chapters 30, 36, and 38). Copies of
				those rules may be obtained by contacting DEQ.
(2) The minimum construction standards set by
				the Board of Water Well Contractors in this subchapter shall apply to all wells
				in Montana. However, for the above-stated wells, DEQ may adopt more specific or
				stringent standards.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.636 - DRILLING AGREEMENT

Current through Register Vol. 13, July 5, 2024
(1) A written
				drilling agreement should be provided to the well owner by the water well
				contractor prior to the construction of the well.
(2) The drilling agreement, if used, should
				contain, but not be limited to the following items:
(a) name and address of the well owner and
				the contractor;
(b) legal
				description of the property on which the well is to be drilled;
(c) site protection;
(d) depth at which well owner requests
				drilling operations cease and contract be renegotiated (in cases of lack of
				sufficient water) ;
(e) size and
				type of casing to be used;
(f)
				disinfection responsibility;
(g)
				excessive pressures (flowing wells) ;
(h) applicable warranties and
				guarantees;
(i) abandonment
				responsibilities, if it becomes necessary to abandon the well for any
				reason;
(j) itemized price list,
				including cost per foot of drill hole; and
(k) date, signatures of well owner and water
				well contractor.
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.637 - PROTECTION OF SITE

Current through Register Vol. 13, July 5, 2024
(1) The contractor
				shall remove from the site all unused materials. Water pumped from the well
				shall be conducted to a place where it will be possible to dispose of the water
				without damage to property or the creation of a nuisance.
(2) Cleanup and restoration of site should be
				covered by a drilling agreement.
(3) The well shall be protected by the
				contractor from pollution during construction.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.638 - LOCATION OF WELLS

Current through Register Vol. 13, July 5, 2024
(1) At a minimum,
				unless contamination risk is evident, water wells shall not be located within:
(a) 50 feet of septic tanks, and underground
				storage tanks and associated lines;
(b) 100 feet of drainfields, seepage pits or
				cesspools, unregulated sewage lagoons, or other site treatment systems;
				or
(c) 1,000 feet of regulated
				sewage lagoons; wells less than 1,000 feet setback must be in compliance with
				the Department of Environmental Quality under ARM 17.30.1702.
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.639 - WELL LOG REPORTS

Current through Register Vol. 13, July 5, 2024
(1) Licensed
				Montana water well contractors/drillers shall prepare a well log report form
				for each well drilled. The contractors/drillers shall file each well log report
				(Form No. 603) with the Ground Water Information Center (GWIC) of the MBMG
				within 60 days of completing the well. The contractors/drillers shall also
				provide copies of each well log, within 60 days of completing the well, to:
(a) the water well owner; and
(b) other such agencies as required by
				85-2-516 and
				85-2-517, MCA.
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.640 - WELL CASING

Current through Register Vol. 13, July 5, 2024
(1) All casing
				installed, other than plastic casing as set forth in ARM
				36.21.641 and
				36.21.645, shall be steel, in new
				or like new condition, being free of pits, breaks, or contamination, and shall
				meet minimum American Society of Testing Materials (ASTM) A53 specifications
				for line pipe for the following sizes:
Table 1 - Minimum specifications for steel well
				  casing.
Nominal Size (inches)
Outside Diameter (inches)
Wall Thickness (inches)
Weight Per Foot (pounds)
2
2.375
0.154
3.56
2
2.875
0.203
5.79
3
3.500
0.216
7.58
3
4.000
0.226
9.11
4
4.500
0.237
10.79
5
5.563
0.244
13.70
6
6.625
0.250
17.02
8
8.625
0.250
22.36
10
10.750
0.250
28.04
12
12.750
0.312
41.45
14
14.000
0.312
45.68
16
16.000
0.312
52.27
18
18.000
0.375
70.59
20
20.000
0.375
78.60
(2)
				All casing having a diameter larger than 20 inches shall have a wall thickness
				of at least 0.375 inch.
(3) Well
				casing installed in a well greater than a nominal diameter of ten inches, may
				have a wall thickness of 0.250 inch as long as it otherwise meets ASTM A53
				specifications and does not exceed the following depth limitations:
Table 2 - Diameter and depth limitations.
Diameter
Maximum Depth
12 inches
250 feet
14-16 inches
150 feet
18-20 inches
100 feet
(4)
				Casings of other specifications may be considered under the provisions of
				variances ARM
				36.21.680.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.641 - INNER CASING

Current through Register Vol. 13, July 5, 2024
(1) Inner casing
				installed through caving formations, or for sealing out water of poor quality,
				and installed without driving, may be of lighter weight than specified by the
				table under ARM
				36.21.640. Such lightweight pipe
				shall have a wall thickness equal to or greater than a minimum wall thickness
				of.188 inch. All inner casing shall be of steel, in new or like new condition,
				being free of pits or breaks; or shall be of polymerized vinyl chloride
				conforming with American Society for Testing and Materials Specification
				F480-81 per ARM
				36.21.645. Inner casing installed
				in a well shall extend or telescope at least 4 feet into the lower end of the
				well casing. In the event that more than one string of inner casing is
				installed, each string shall extend or telescope at least 4 feet into the
				adjacent larger diameter inner casing.
(2) In the event inner casing must be driven,
				it must meet the specifications of ARM 36.21.640.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.641A - CASING DEPTH

Current through Register Vol. 13, July 5, 2024
(1) All wells shall
				be completely cased to the bottom of the usable drill hole and sealed in
				accordance with ARM
				36.21.654.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.642 - STEEL CASING JOINTS

Current through Register Vol. 13, July 5, 2024
(1) All casing
				joints shall be welded or screw coupled and shall be watertight. If welded
				casing joints are used, the weld shall be a full penetrating weld at least
				equal in thickness to the wall thickness of the casing. Welded casing joints
				shall have a tensile strength equal to or greater than that of the
				casing.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.643 - TEMPORARY CASING

Current through Register Vol. 13, July 5, 2024
(1) Temporary outer
				surface casing used in the construction of a well shall be withdrawn as sealing
				material is placed.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.644 - CASING SHOE

Current through Register Vol. 13, July 5, 2024
(1) In all drilled
				wells, permanent well casing that is driven should be equipped with a standard
				drive shoe at its lower end, welded or threaded onto the lower end of the
				string of casing. The shoe shall have a beveled cutting edge of metal forged,
				cast, or fabricated for this special purpose.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.645 - PLASTIC CASING

Current through Register Vol. 13, July 5, 2024
(1) All plastic
				casing shall be installed only in an oversized drill hole without driving.
				Wells cased with plastic shall have steel casing extending a minimum of 25 feet
				below the surface and 18 inches above the ground surface. Plastic casing to be
				used must be specifically designed for water well construction and bear NSF
				approval. Methods of installation shall be:
(a) installing a larger size steel casing on
				the outside of the plastic casing with a minimum of four feet of overlap (see
				Figure 6A at the end of this subchapter); or
(b) attaching directly to the plastic casing
				a threaded plastic to steel coupling (Figure 6B).
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.646 - PLASTIC CASING JOINTS

Current through Register Vol. 13, July 5, 2024
(1) All casing
				joints shall be watertight. Either "bell" type or coupling hubs or threaded
				couplings are approved. Hub couplings shall be of material meeting the
				specifications for plastic casings as stipulated in ARM
				36.21.645. Solvent cemented joints
				shall be made in accordance with manufacturer's directions.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.647 - TOP TERMINAL HEIGHT

Current through Register Vol. 13, July 5, 2024
(1) The casing head
				or pitless unit of any water well shall extend not less than 18 inches above
				the finished ground surface or pump house floor, and not less than 18 inches
				above the local surface runoff level. No casing shall be cut off below land
				surface except during permanent abandonment of a well. The ground surface
				immediately surrounding the top of the well casing or pitless unit shall be
				graded so as to drain surface water away from the well. The casing of any water
				well shall extend not less than 18 inches above the established 100 year
				floodplain elevation or be capped with a watertight seal and vented above flood
				level.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.648 - CASING OPENINGS

Current through Register Vol. 13, July 5, 2024
(1) There shall be
				no opening in the casing wall between the top of the casing and the bottom of
				the required casing seal except for pitless adapters, screened vents (inverted
				u-construction), measurement access ports, and grout nipples installed in
				conformance with these standards.
(a) All
				pitless adaptors must be installed according to manufacturers
				specifications.
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.649 - CASING CENTRALIZERS

Current through Register Vol. 13, July 5, 2024
(1) Well casing to
				be sealed into an oversize drill hole should be equipped with centering guides
				to ensure the proper centering of a casing. In all events, casings shall be
				centered in the sealed interval. Guides should be of steel, at least 1/4 inch
				in thickness, evenly spaced in groups of 3 or 4 in 20 foot intervals or less.
				(See Figure 1.)
37-43-202(3),
					 MCA; IMP 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.650 - CASING PERFORATIONS

Current through Register Vol. 13, July 5, 2024
(1) Perforations
				above the lowest expected static water level shall not be permitted. Wells may
				be completed with perforations as follows:
(a) in-place perforations with star, mills
				knife, similar type perforators, millslotted, sawed, or drilled;
(b) perforated inner casing, either
				torch-cut, millslotted or punched. Such inner casing may be of steel, plastic
				or other suitable corrosion-resistant material, but if other than steel, a full
				evaluation of the structural stability of the inner casing must be made prior
				to its placement. They may be used in a natural development or gravel packed
				type of construction. Where appropriate, the top of the inner casing shall be
				fitted with suitable packers or sealing material and sealed to the well
				casing.
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.651 - MOVEMENT OF CASING AFTER SEALING

Current through Register Vol. 13, July 5, 2024
(1) In no
				case shall the permanent well casing be moved or driven following the placement
				and initial set of the cement grout.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.652 - WELL SCREENS

Current through Register Vol. 13, July 5, 2024
(1) Well screens
				shall be constructed of one type of corrosion-resistant material.
(a) The choice of material should be selected
				on the basis of chemical analysis of the water or prior knowledge of the water
				quality.
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.653 - WELL DEVELOPMENT PROCEDURES

Current through Register Vol. 13, July 5, 2024
(1) Upon
				completion of the well and before conducting the yield and drawdown tests, the
				contractor shall surge and develop the well to remove all fines, drill
				cuttings, mud, drilling fluids, and additives. The method of developing and
				length of time of development shall be determined by the contractor dependent
				on the type of water-bearing formation encountered.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.654 - SEALING OF CASING - GENERAL

Current through Register Vol. 13, July 5, 2024
(1) In
				constructing, developing, redeveloping, or conditioning a well, care shall be
				taken to preserve the natural barriers to groundwater movement between aquifers
				and to seal aquifers or strata penetrated during drilling operations which
				might impair water quality or result in cascading water.
(a) All sealing shall be permanent and
				prevent possible downward movement of surface waters in the annular space
				around the well casing.
(b) Sealing
				shall be accomplished to prevent the upward movement of artesian waters within
				the annular space around the well casing that could result in the waste of
				groundwater.
(c) The sealing shall
				restrict the movement of groundwater either upward or downward from zones that
				have been cased out of the well because of poor quality.
(d) When cement grout is used in sealing, it
				shall be set in place 72 hours before additional drilling takes place, unless
				special additives are mixed with the sealing material that will cause it to
				adequately set in a shorter period of time.
(e) All sealing shall be performed by adding
				the mixture from the bottom of the space to be sealed toward the surface in one
				continuous operation. The minimum sealing material thickness shall be three
				inches. A minimum thickness of 1.5 inches of sealing material shall be applied
				around the outside of the casing.
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.655 - CONSOLIDATED FORMATIONS

Current through Register Vol. 13, July 5, 2024
(1) The following
				special sealing methods may be required in situations where different
				techniques are necessary to protect aquifers.
(a) In drilled wells that penetrate an
				aquifer either within a consolidated or confining formation, sealing of the
				casing shall conform with one of the following procedures:
(i) an upper drill hole, at least three
				inches greater in diameter than the nominal size of the permanent well casing,
				shall extend from land surface to at least three feet into sound, consolidated
				formation. In no instance shall said upper drill hole extend less than 25 feet
				below land surface; and
(ii)
				unperforated permanent casing shall be installed to extend to this same depth,
				and the lower part of the casing shall be sealed into the rock formation with
				cement grout. The remainder of the annular space to land surface shall be
				filled with an appropriate sealing material (see Figure 2A at the end of this
				subchapter).
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.656 - UNCONSOLIDATED FORMATIONS WITHOUT SIGNIFICANT CLAY BEDS

Current through Register Vol. 13, July 5, 2024
(1) The following special sealing methods may
				be required in situations where different techniques are necessary to protect
				aquifers.
(a) In drilled wells that penetrate
				an aquifer overlain by unconsolidated formations such as sand and gravel
				without significant clay beds, an unperforated well casing shall extend to at
				least one foot below the known seasonal low water table. An upper drill hole
				having a diameter at least three inches greater than the nominal size of the
				permanent casing shall extend to at least 25 feet below land surface.
(b) The annular space between the upper drill
				hole and the well casing shall be kept at least one-half full with bentonite
				slurry throughout the driving of the permanent casing into the aquifer. After
				the permanent casing is set in its final position, the remaining annular space
				shall be filled to land surface with appropriate sealing material (see Figure
				3A at the end of this subchapter).
(c) If the oversized drill hole is extended
				to the same depth as the permanent casing, a suitable bridge shall be installed
				between the casing and the drill hole at a position directly above the
				production aquifer. The remaining annular space shall be completely filled and
				sealed to land surface with appropriate sealing material (see Figure 3B at the
				end of this subchapter).
(d) A
				suitable bridge is one that prevents the sealing material from dropping into
				the producing formations and reducing the output of the well.
(e) If temporary casing is used to maintain
				the oversized drill hole, the annular space shall be kept full with appropriate
				sealing material as the temporary casing is being withdrawn.
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.657 - UNCONSOLIDATED FORMATIONS WITH CLAY BEDS

Current through Register Vol. 13, July 5, 2024
(1)
				The following special sealing methods may be required in situations where
				different techniques are necessary to protect aquifers.
(2) In drilled wells that penetrate an
				aquifer overlain by clay or other unconsolidated deposits such as sand and
				gravel in which significant (at least 6 feet thick) interbeds of clay are
				present, the well casing may be terminated in such clay strata, provided that
				the casing be sealed in substantially the same manner as is required in the
				case of consolidated formations (see ARM
				36.21.655 and Figure 3C at the end
				of this subchapter).
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.658 - SPECIAL SEALING STANDARDS FOR FLOWING WELLS

Current through Register Vol. 13, July 5, 2024
(1)
				When flowing water is encountered in the well, an unperforated well casing
				shall extend into the confining stratum overlying the artesian zone. The casing
				shall be adequately sealed into the confining stratum so as to prevent surface
				and subsurface leakage from the artesian zone.
(2) If the well flows at land surface, it
				shall be equipped with a control valve so that the flow can be completely
				stopped.
(3) The well shall be
				completed with packers or appropriate sealing material that will eliminate
				leakage around the well casing.
(4)
				The driller is responsible to use all reasonable methods and care to prevent
				leakage around the well casing within a reasonable time frame or until the
				board is satisfied that the leakage is controlled.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.659 - SEALING OF ARTIFICIAL GRAVEL PACKED WELLS, PERMANENT SURFACE CASING NOT INSTALLED

Current through Register Vol. 13, July 5, 2024
(1) The following
				special sealing methods may be required in situations where different
				techniques are necessary to protect aquifers.
(a) An upper drill hole having a diameter of
				at least three inches greater than the outside diameter of the production
				casing shall be drilled to extend from land surface into a clay or other
				formation of low permeability overlying the water-bearing zone.
(b) The annular space to this depth shall be
				filled with sealing material. If the clay or other impermeable formation is at
				or near land surface, the upper drill hole and unperforated production casing
				shall extend to a minimum depth of 25 feet below land surface, provided that
				the casing does not pass through the impermeable zone.
(c) A suitable bridge shall be installed in
				the annular space between the gravel pack and the sealing material. A gravel
				fill pipe may be installed for injecting gravel prior to sealing the top of the
				gravel pack (see ARM
				36.21.656(5) for
				definition of a suitable bridge).
(d) Special care shall be taken to ensure
				that the seal is watertight around the injection pipe. The injection pipe shall
				be capped with a watertight seal or plug (see Figure 4A at the end of this
				subchapter).
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.660 - SEALING OF ARTIFICIAL GRAVEL PACKED WELLS, PERMANENT SURFACE CASING INSTALLED

Current through Register Vol. 13, July 5, 2024
(1) The following
				special sealing methods may be required in situations where different
				techniques are necessary to protect aquifers.
(a) When permanent surface casing is
				installed, the well bore shall have a diameter of at least three inches greater
				than the surface casing for the introduction of sealing materials.
(b) A watertight seal shall be installed at
				the top of the gravel pack between the permanent surface and production
				casing.
(c) Sealing procedures and
				installation of gravel fill pipes are substantially the same as in ARM
				36.21.659.
(d) If a temporary casing is used to maintain
				the oversized drill hole, the annular space to be sealed under conditions of
				ARM 36.21.659 and
				36.21.660 shall be kept full with
				cement grout or bentonite clay grout as the temporary casing is withdrawn (see
				Figure 4B at the end of this subchapter).
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.661 - CAPPING

Current through Register Vol. 13, July 5, 2024
(1) At all times during the progress of the
				work, the well driller shall protect the well in such a manner as to
				effectively prevent either tampering with the well or the entrance of foreign
				matter into it. Upon its completion, the well driller shall provide and set a
				sanitary well cap or welded cap.
(2) Any well to be temporarily removed from
				service, temporarily abandoned due to a recess in construction, or any well to
				be temporarily abandoned before commencing service, shall be capped with a
				sanitary well cap, watertight seal, watertight welded steel cap, or threaded
				cap.
(3) Temporarily abandoned
				wells shall be grouted and sealed to comply with ARM
				36.21.654
				before the drill rig is removed from the site.
(4) Temporarily abandoned wells shall have an
				access port as per ARM
				36.21.665.
(5) Hydrants, frost-free hydrants, faucets,
				hose attachments, or discharge hardware that allow siphoning into a well cannot
				be directly attached to the well casing, pitless adapter, or well cap. Hand
				pumps, windmills, or other manually operated discharge hardware that have hose
				connections or attachments and that attach directly to the well casing shall
				use a vacuum breaker or an anti-siphoning device. Flowing wells shall be capped
				and sealed to comply with ARM
				36.21.658.
AUTH:
					 37-43-202, MCA
					 IMP:
					 37-43-202,
					 MCA
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.662 - DISINFECTION

Current through Register Vol. 13, July 5, 2024
(1) Sand and gravel used in filter pack wells
				shall be thoroughly hosed or sluiced with water, and shall be disinfected with
				a solution containing at least 50 parts per million chlorine before being
				placed in the well. All water introduced into a well during construction shall
				be clean and potable. The well and its equipment, including the interior of the
				well casing, shall be thoroughly swabbed and cleaned to remove all oil, grease,
				and foreign substances upon completion of the well's construction. Following
				the completion of a well, and again after the pumping equipment has been
				installed, a well and its equipment shall be disinfected by thoroughly
				agitating and mixing in the well a solution containing enough chlorine to leave
				a residual of 25 parts per million throughout the well after a period of 24
				hours.
(2) The responsibility for
				the chlorination of the well shall be agreed upon in writing by the parties to
				the drilling agreement.
(3) The
				contractor shall clean and disinfect the drilling equipment after drilling in
				an area of known or suspected contamination or areas of iron bacteria
				problems.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.663 - WARRANTY AND GUARANTEES

Current through Register Vol. 13, July 5, 2024
(1) The contractor
				warrants and guarantees to the well owner that all materials and equipment
				shall be new unless otherwise specified and that all work shall be of good
				quality and free from faults or defects and in accordance with the requirements
				of the drilling agreement and of any inspections, tests or approvals referred
				to in the drilling agreement. These warranties and guarantees are void if the
				well owner does not give timely notice to the contractor of all unsatisfactory
				work, all faulty or defective work and all work not conforming to the
				requirements of the drilling agreement or such inspections, tests or
				approvals.
(2) The contractor shall
				extend to the purchaser, factory guarantees on pumps and accessories sold and
				installed by him.
(3) The warranty
				or guarantee period shall be a minimum of one year from the date of completion
				of the well.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.664 - TESTS FOR YIELD AND DRAWDOWN

Current through Register Vol. 13, July 5, 2024
(1) Every well
				shall be tested for yield and drawdown for a period of not less than 1 hour
				either by bailing, pumping, or air testing. During testing, discharge rate
				shall be as uniform as possible. The minimum data to be entered on the well log
				report form shall be:
(a) static water level
				immediately before testing begins;
(b) pump rate and means of discharge (i.e.,
				bailing, airlift, pumping) ;
(c)
				pumping level after one hour;
(d)
				recovery level and time of recovery; and
(e) for public community, non-community
				public and multi-family water supply wells, the testing requirements set out in
				ARM Title 17, chapters 30, 36 and 38 shall apply.
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.665 - ACCESS PORT

Current through Register Vol. 13, July 5, 2024
(1) All wells shall
				be equipped with an access port 1/2 inch minimum that will allow for the
				unobstructed measurement of the depth to water surface or a pressure gauge that
				will indicate the shut-in pressure of a flowing well (see Figure 5 at the end
				of this subchapter). The access ports and pressure gauges or other openings in
				the cover shall be sealed or capped to prevent entrance of surface water or
				foreign material into the well.
(2)
				Removable caps are acceptable as access ports.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.666 - ARTIFICIAL GRAVEL PACKED WELLS - GENERAL

Current through Register Vol. 13, July 5, 2024
(1)
				In gravel packed wells, the gravel mixture shall be placed around the screen so
				that bridging or size separation will not occur. The gravel pack shall be
				clean, chemically stable, and composed of reasonably uniform grains. All gravel
				and water used shall be disinfected in at least 50 ppm chlorine.
(2) Gravel packing shall be placed from the
				bottom of the screen upwards to 2 to 3 feet above the screen.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.667 - SAMPLING OF FORMATIONS

Current through Register Vol. 13, July 5, 2024
(1) The contractor
				shall secure representative samples of all materials encountered in the
				formations drilled in the well. These samples shall be taken as required by the
				following:
(a) one sample at the beginning of
				each change in material encountered; and
(b) samples should be taken in the
				water-bearing aquifer(s).
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.668 - WATER SAMPLES

Current through Register Vol. 13, July 5, 2024
(1) To determine
				the chemical quality of ground water which will be available from each well and
				its suitability for intended uses, the water in all wells should be sampled
				during or immediately following construction and development.
(a) The sample shall be clearly marked with
				the location of the well, the date and time taken, and the depth of the strata
				from which the water was taken.
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.669 - PLUMBNESS AND ALIGNMENT TEST

Current through Register Vol. 13, July 5, 2024
(1) The
				completed well shall be sufficiently plumb and straight so that there will be
				no interference with installation, alignment, operation or future removal of
				the permanent pump.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.669A - TYPES OF WELLS REQUIRING ABANDONMENT

Current through Register Vol. 13, July 5, 2024
(1) Wells
				requiring permanent abandonment include, but are not limited to those:
(a) whose use has been permanently
				discontinued, or
(b) in such
				disrepair that its continued use for obtaining groundwater is impractical or
				may be a health hazard, or
(c)
				whose existence allows intermixing of waters which cause deleterius effects
				upon temperatures, qualities, or pressures, or
(d) a well in the process of being drilled
				which is rendered unusable because of driller error and for which drilling must
				be discontinued.
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.670 - PERMANENT ABANDONMENT

Current through Register Vol. 13, July 5, 2024
(1) Any well that
				is to be permanently abandoned shall be completely filled in such a manner that
				vertical movement of water within the well bore, including vertical movement of
				water within the annular space surrounding the well casing, is effectively and
				permanently prohibited. All fluids within a well are to be permanently confined
				to the specific strata in which they were originally encountered.
(2) Abandoned wells must be completely filled
				with sealing material to within 3 feet of the surface. Any remaining hole shall
				be filled with naturally occurring soils.
(3) The abandoned well shall not produce
				water nor serve as a channel for movement of groundwater.
(4) In no instance shall abandoned wells be
				used for disposal of sewage, household waters or other contaminated
				material.
(5) Land surface shall be
				restored to a like condition, safe to livestock and humans.
(6) Where possible, all casings or liners
				shall be removed. In the event that the casing cannot be removed, it shall be
				cut off or driven downward so that the top of the casing is at least 3 feet
				below the ground surface.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.671 - ABANDONMENT OF FLOWING WELLS

Current through Register Vol. 13, July 5, 2024
(1) The flow of
				flowing wells to be abandoned shall be confined or restricted by cement grout
				applied under pressure, or by the use of a suitable well packer, or a wooden or
				cast plug placed at the bottom of the confining formation immediately above the
				flowing water-bearing zone. Cement grout or concrete shall be used to
				effectively fill the well to land surface.
(2) Flowing wells should be made static
				before plugging with cement if they are not contained by casing. If unable to
				make the well static with heavy mud, heavy weight cement should be pumped into
				the hole from the bottom up at a brisk rate. Cement mix should be at least
				twice the volume needed to plug the well. The first cement pumped out will be
				diluted and should be discarded.
(3) If the flowing well is controlled by the
				casing, a pressure reading should be taken and sufficient cement should be
				pumped in the casing from the top so that the cement will enter the
				aquifer.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.672 - ABANDONMENT OF FILTER PACK WELLS

Current through Register Vol. 13, July 5, 2024
(1) Appropriate
				methods of abandonment of filter pack or gravel enveloped wells, or other wells
				in which coarse material has been added around the inner casing should be
				determined individually by the responsible water well contractor. Approval
				should be obtained from the board prior to abandonment.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.673 - REMOVAL OF WELL CASING DURING ABANDONMENT

Current through Register Vol. 13, July 5, 2024
(1)
				If the casing of a well is removed during abandonment, the well shall be
				plugged and sealed in accordance with ARM
				36.21.670 and shall be filled with
				sealing materials as the casing is removed.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.674 - OBSTRUCTIONS

Current through Register Vol. 13, July 5, 2024
(1) All obstructions or debris which may
				interfere with effective sealing operations shall be removed from the well to
				be abandoned.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.675 - CEMENT GROUT

Current through Register Vol. 13, July 5, 2024
(1) Cement grout
				for use in abandonment operations shall conform to the requirements of ARM
				36.21.634(33)
				(b).
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.676 - CONCRETE

Current through Register Vol. 13, July 5, 2024
(1) Concrete for use in abandonment
				operations shall conform to the requirements of ARM
				36.21.634(13).
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.677 - METHOD OF PLACEMENT OF CONCRETE OR CEMENT GROUT

Current through Register Vol. 13, July 5, 2024
(1) Concrete or cement grout used as a
				sealing material in abandonment operations shall be introduced at the bottom of
				the well or required sealing interval. All cement sealing materials shall be
				placed to avoid segregation or dilution of the sealing materials.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.678 - WATER WELL LOG REPORT

Current through Register Vol. 13, July 5, 2024
(1) A water well
				log report, Form No. 603, fully describing all abandonment procedures, shall be
				submitted to the Ground Water Information Center (GWIC) of the MBMG within 60
				days of abandoning the well.
37-43-202(3),
					 MCA; IMP, 37-43-202(3),
					 MCA;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.679 - DRY OR INADEOUATE WELL HOLES

Current through Register Vol. 13, July 5, 2024
(1) Water
				wells which have been constructed and do not provide an adequate supply of
				water for the use for which they were drilled (dry hole) are not to be
				considered completed until the well driller either:
(a) removes the casing and fills the hole
				with cement grout, concrete, or bentonite clay grout; or
(b) constructs the well in accordance with
				minimum well construction standards and welds a 0.25-inch thick steel plate
				fully covering the top of the casing providing a watertight seal.
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.6 - Construction Standards › Rule 36.21.680 - VARIANCES

Current through Register Vol. 13, July 5, 2024
(1) When, due to special circumstances beyond
				the control of the contractor, compliance with these minimum construction
				standards is impossible or otherwise unreasonably difficult, a variance may be
				requested from the board of water well CONTRACTORS prior to beginning or
				continuing construction of the well. The request for a variance shall be in
				writing and shall include:
(a) the purpose of
				the well construction;
(b) the
				location of the well;
(c) name and
				address of the owner;
(d) distance
				to the nearest well, septic tank, drainfield, or other hazardous
				wastes--surface or subsurface;
(e)
				the unusual conditions existing at the well site;
(f) the reasons that compliance with the
				rules for minimum standards will not result in a satisfactory well;
(g) the proposed standards that the water
				well contractor believes will be adequate for his particular well;
				and
(h) a drawing with written
				explanation showing the pertinent features of the proposed well design and
				construction.
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.7 - Monitoring Well Constructor's Licenses › Rule 36.21.701 - VERIFICATION OF EXPERIENCE

Current through Register Vol. 13, July 5, 2024
(1) Verification of
				1 year of experience shall consist of:
(a) a
				listing of monitoring well work performed in the past 4 years including:
(i) location of job site and name and address
				of company for whom the monitoring work was performed,
(ii) description of the work,
(iii) length of work,
(iv) other details which will assist in
				verifying the work;
Administrative Rules of Montana › Department 36 - NATURAL RESOURCES AND CONSERVATION › Chapter 36.21 - BOARD OF WATER WELL CONTRACTORS › Subchapter 36.21.7 - Monitoring Well Constructor's Licenses › Rule 36.21.701A - VERIFICATION OF EQUIVALENT EDUCATION AND EXPERIENCE

Current through Register Vol. 13, July 5, 2024
(1) Equivalent education pursuant to section
				37-43-305(4) (f),
				MCA, shall be:
(a) college course work or
				equivalent professional education classes equal to or exceeding 9 semester
				credits at an accredited college or university, directly pertaining to
				groundwater or well installation technology and 6 months experience;
(b) other combinations of education and
				experience, as approved on a case by case basis.