Nev. Admin. Code § 534.4365 - Monitoring wells: Plugging

1. Except as otherwise provided in this section, a monitoring well must be plugged by a licensed well driller within 30 days after monitoring is no longer required.

2. Except as otherwise provided in subsection 5, if an annular cement seal was not installed, the monitoring well must be plugged by breaking the casing free with appropriate equipment so that the casing may be pulled from the well.

3. Except as otherwise provided in subsection 5, if the casing in the monitoring well cannot be removed from the borehole, the monitoring well must be plugged by:

(a) Placing neat cement by tremie pipe in an upward direction from the bottom of the well to the surface of the well; or

(b) Pressure grouting.

4. Except as otherwise provided in subsection 5, if the casing in the monitoring well can be removed from the borehole, the bottom end of the casing in the monitoring well must be removed or perforated and neat cement must be placed by tremie pipe in an upward direction from the bottom of the well to the surface of the well as the casing is removed from the borehole. If the casing in the monitoring well does not exceed 4 inches in diameter, the casing may be used as the tremie pipe.

5. If a request for a waiver of the requirements in subsection 3 of NAC 534.4355 or NAC 534.4357 has been granted by the State Engineer pursuant to NAC 534.441, the well must be plugged in the manner prescribed in NAC 534.420 or authorized pursuant to NAC 534.422.

Notes

Nev. Admin. Code § 534.4365

Added to NAC by St. Engineer, eff. 12-30-97; A by R009-06, 6-1-2006; R039-12, 6-29-2012; A by R044-14, eff. 10/24/2014; A by R068-20A, eff. 12/29/2020; A by R068-20CAP, eff. 6/23/2021

NRS 534.020, 534.060, 534.110