"Replace" means to remove a component of an existing UST system, including but not limited to a tank, piping, sump, spill containment equipment, overfill prevention equipment, corrosion protection equipment, containment sump, or release detection equipment, and then install a component to serve the same design function as the removed component.
N.H. Admin. Code § Env-Or 402.53
(See Revision Note at chapter heading for Env-Or 400) #10393, eff 9-1-13