Section Env-Wq 1010.04 - Backfill and Bedding For Septic Tanks(a) Bedding material beneath a septic tank shall: (1) Consist of at least 4 inches of sand or crushed stone placed on a firm and uniform base;(2) Be level and compacted so as to prevent differential settling of the ground underneath the tank; and(3) Not bear on boulders or rock edges or any aggregate in excess of 3 inches in size.(b) Backfill around a septic tank shall be: (1) Placed in lifts as specified by the tank manufacturer, but in no case greater than 12 inches; and(2) Compacted in a manner that does not damage the structural integrity of the tank.N.H. Admin. Code § Env-Wq 1010.04
(See Revision Note at chapter heading for Env-Wq 1000) #9086, eff 2-9-08; ss by #9904-A, eff 4-16-11
Amended by Volume XXXVI Number 41, Filed October 13, 2016, Proposed by #11184, Effective 10/1/2016, Expires 10/1/2026.