"Redevelopment" means to undertake construction on property where development activities occurred more than 10 years prior to the proposed development activities and where the area of existing impervious cover is 60 percent or greater of the area of the property, including any abutting properties under the control of the property owner.
N.H. Admin. Code § Env-Wq 1502.53
(See Revision Note #1 at chapter heading for Env-Wq 500) #9343, eff 1-1-09