N.H. Code Admin. R. Env-Wt 102.02
“Abandoned” means a structure has not been maintained for 5 years or more and is no longer in a functional and intact condition for its original intended use.
Source. (See Revision Notes #1, #2, #3, and #4 at Chapter heading for Env-Wt 100) #12801, eff 12-15-19