N.H. Code Admin. R. Env-Wq 1502.20
“Extended detention” means the temporary storage of a portion of the water quality volume (WQV) when the WQV is greater than the permanent pool storage volume within a stormwater management system.
Source. #12342, eff 8-15-17; ss by #14472, eff 1-19-26, EXPIRES: 1-19-36 (formerly Env-Wq 1502.22)