"Filtering practice" means a method that captures and temporarily stores the water quality volume and passes it through a bed of treatment media, including but not limited to earth material, to remove pollutants from the water.
N.H. Admin. Code § Env-Wq 1502.24
(See Revision Note #1 at chapter heading for Env-Wq 1500) #9343, eff 1-1-09