Section 534.4371 - Boreholes: Plugging requirements1. A geotechnical soil boring must be plugged within 60 days after the date on which the drilling of the geotechnical soil boring is completed.2. Except as otherwise provided in subsections 3 and 4, a geotechnical soil boring must be plugged in the manner prescribed for plugging a well in NAC 534.420 or authorized pursuant to NAC 534.422.3. If there is evidence that water-draining formations (lost circulation), or water-bearing formations of different water quality or hydraulic head were encountered during the original geotechnical soil boring construction and if bentonite chips or bentonite grout is used as the plugging material, the well driller must, in addition to the requirements of this section and NAC 534.420 or 534.422, as applicable, place neat cement across the water-confining formations so that the plugging fluid penetrates the geologic formation to prevent the vertical movement of water. Any drilling casing or pipe that does not break free, and occludes the placement of neat cement across a confining formation, must be perforated so that the plugging fluid penetrates the annular space and the geologic formation in that interval.4. If the water-bearing formations are unknown and any drilling casing or pipe does not break free, the well driller must plug the geotechnical soil boring in accordance with subsection 5 or 6 of NAC 534.420, as applicable, so that the plugging fluid penetrates the annular space and the geologic formation in the perforated intervals.Nev. Admin. Code § 534.4371
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. 6/23/2021NRS 534.020, 534.060, 534.110