N.H. Code Admin. R. Env-Wq 1502.76
“Underground filter” means a filtering practice that treats stormwater as it flows through underground settling chambers and filter media.
Source. #9343, eff 1-1-09; ss by #12342, eff 8-15-17 (formerly Env-Wq 1502.67); ss by #14472, eff 1-19-26, EXPIRES: 1-19-36