N.H. Code Admin. R. Env-Wq 1508.16

Current through Register No. 25, June 20, 2024

Section Env-Wq 1508.16 - Groundwater Recharge Practices

The following methods shall be acceptable methods for infiltrating groundwater, provided that all method-specific criteria are met:

(a) Infiltration practices accordance with Env-Wq 1508.06;

(b) Filtering practices in accordance with Env-Wq 1508.07 that infiltrate into the native soil below the practice; and

(c) Other groundwater recharge practices, including but not limited to permeable surfaces, modular concrete paving blocks, modular concrete or plastic lattice, cast-in-place concrete grids, soil enhancement technologies, and other materials such as gravel, cobbles, wood, mulch, brick, or natural stone, provided that the following criteria are met:

(1) The practice shall completely drain within 72 hours;

(2) Bedrock and the SHWT shall be at least one foot below the base of the practice; and

(3) Prior to adding a factor of safety, the underlying soil has a design infiltration rate of 0.5 inches per hour or more, as calculated per Env-Wq 1504.14.

N.H. Code Admin. R. Env-Wq 1508.16

(See Revision Note #1 at chapter heading for Env-Wq 1500) #9343, eff 1-1-09

Amended by Volume XXXVII Number 32, Filed August 10, 2017, Proposed by #12342, Effective 8/15/2017, Expires 8/15/2027.