122 Neb. Admin. Code, ch. 35, § 008
After completion of the plugging, abandonment, or restoration procedures, an affidavit, setting forth in detail the significant data in connection with the well (including well details) and the procedure used in plugging, abandonment, or restoration, signed by a qualified witness to the plugging, abandonment, or restoration procedures and duly notarized, shall be filed with the Department, within ninety days after plugging, abandonment, or restoration is completed. The Department reserves the right to require the operator to replug and/or abandon any well where it can be determined that the plugging and/or abandonment procedure was not effective due to failure of plugging and abandonment materials or other difficulty. The Department also reserves the right to require the permittee to restore areas (including aquifers) that were not restored properly or to standards outlined in the approved abandonment plan.
122 Neb. Admin. Code, ch. 35, § 008