For systems using acrylamide/epichlorohydrin, records shall not be destroyed if they are less than 10 years old in order to demonstrate the system's compliance with the treatment techniques for acrylamide or epichlorohydrin, as applicable, in Env-Ws 327.90.
N.H. Admin. Code § Env-Ws 304.08
(See Revision Note at chapter heading for Env-Ws 300); ss by #8498, eff 11-30-05