Boring and well abandonment

Boring and well abandonment. Boring and well abandonment. All monitoring wells and boreholes shall be abandoned in accordance with s. NR 141.25 and this section. (1) Timeline. All boreholes not instrumented with a well shall be abandoned immediately after completion of drilling and soil sampling. (2) Abandonment of water supply wells. Water supply wells that are required to be abandoned shall be abandoned and documented in accordance with s. NR 812.26 . Abandonment of water supply wells located within the proposed or approved limits of waste shall include either removal or perforation of the well casing to allow the sealing of the annular space with impermeable filling and sealing material.