Section Env-Wq 1014.07 - Distance Above Impermeable Substratum(a) Except as allowed by (b) through (d), below, or by Env-Wq 1014.09, the bottom of an EDA shall be at least 4 feet above bedrock or any other impermeable substratum.(b) The bottom of the EDA for new systems shall be at or above the specified separation distance to bedrock or any other impermeable substratum for any EDA using EDA components that have been approved with reference to a manual pursuant to former Env-Ws 1024 or approved pursuant to Env-Wq 1024, where the approved manual or approval, respectively, specifies that the component can be used with other than a 4-foot separation.(c) For a system to replace a failed system serving a single family residence or duplex where there will be no expansion, the following shall apply: (1) The bottom of the EDA shall be as close to 4 feet above bedrock or other impermeable substratum as possible, and in no case less than 2 feet above bedrock or other impermeable substratum, if a conventional pipe-and-stone system, chamber system, or drywell system is used to replace the failed system; and(2) The bottom of the EDA shall be as close to the specified distance above bedrock or other impermeable substratum as possible, and in no case less than 2 feet above bedrock or other impermeable substratum, for any EDA using EDA components that have been approved with reference to a manual pursuant to former Env-Ws 1024 or approved pursuant to Env-Wq 1024, where the approved manual or approval, respectively, specifies that the components can be used with other than a 4-foot separation in new applications.(d) A system to replace a failed system serving a condominium shall be installed in accordance with (c), above, if:(1) The condominium meets the criteria of Env-Wq 1003.11(c);(2) The fixtures in each condominium unit are low-flow fixtures or will be replaced within 90 days of the issuance of construction approval with low-flow fixtures; and(3) There will be no expansion of the condominium or of the size or use of the individual units in the condominium.N.H. Code Admin. R. Env-Wq 1014.07
(See Revision Note at chapter heading for Env-Wq 1000) #9086, eff 2-9-08
Amended by Volume XXXVI Number 41, Filed October 13, 2016, Proposed by #11184, Effective 10/1/2016, Expires 10/1/2026.