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| Rule: 36.21.649 | Prev Up Next | |
| Rule Title: CASING CENTRALIZERS | ||
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| Department: | NATURAL RESOURCES AND CONSERVATION, DEPARTMENT OF | |
| Chapter: | BOARD OF WATER WELL CONTRACTORS | |
| Subchapter: | Construction Standards | |
| Latest version of the adopted rule presented in Administrative Rules of Montana (ARM): | ||
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36.21.649 CASING CENTRALIZERS (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.) � � History: 37-43-202(3), MCA; IMP 37-43-202(3), MCA; NEW, 1986 MAR p. 1699, Eff. 10/17/86. |
| MAR Notices | Effective From | Effective To | History Notes |
|---|---|---|---|
| 10/17/1986 | Current | History: 37-43-202(3), MCA; IMP 37-43-202(3), MCA; NEW, 1986 MAR p. 1699, Eff. 10/17/86. |
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