NAC459.9946. Underground storage tanks: Secondary containment system required upon replacement of tank or piping; exceptions.

     1. Except as otherwise provided in subsections 2 and 4 and NAC 459.9949, a secondary containment system is required for any existing underground storage tank which is replaced, including the replacement of any piping that constitutes a portion of the underground storage tank regardless of whether the piping is replaced in conjunction with or separately from other portions of the underground storage tank.

     2. The provisions of subsection 1 apply solely to those portions of an underground storage tank that are replaced and not to any other portion that remains in place, including any other underground storage tank that is connected to the replaced tank by piping or coupled through a manifold.

     3. Piping is not considered to be replaced for purposes of this section unless the entire amount of a run of piping from one component to another component of the underground storage tank is replaced, including, without limitation, a component consisting of an individual tank, dispenser or piece of ancillary equipment.

     4. The provisions of subsection 1 do not apply to any repairs not involving replacement that are intended to restore an underground storage tank to operating condition.

     (Added to NAC by Environmental Comm’n by R005-08, eff. 4-17-2008)