New Hampshire Code of Administrative Rules
Env - Department of Environmental Services
Subtitle Env-Wq - Water Quality and Quantity Programs
Chapter Env-Wq 1000 - SUBDIVISIONS; INDIVIDUAL SEWAGE DISPOSAL SYSTEMS
Part Env-Wq 1010 - SEPTIC TANKS
Section Env-Wq 1010.13 - Ledge Tanks
Universal Citation: NH Admin Rules Env-Wq 1010.13
Current through Register No. 13, March 27, 2025
(a) Subject to (b), below, a ledge tank shall be used only on a ledge lot as defined in Env-Wq 1002.
(b) A ledge tank may be used on a lot that is not a ledge lot if:
(1) The location for the
septic tank shown on the approved plan turns out to not be suitable, for
example due to the presence of boulders;
(2) There is no other suitable location for
the septic tank; and
(3) An amended
plan is available at the final inspection in accordance with Env-Wq
1004.08.
(c) To ensure adequate settling of solids when a ledge tank is used, total septic tank volume shall be twice the septic tank capacity specified in Env-Wq 1010.01 or Env-Wq 1010.02, as applicable. Such additional capacity may be achieved using 2 or more ledge tanks in series.
(See Revision Note at chapter heading for Env-Wq 1000) #9086, eff 2-9-08; ss by #9904-A, eff 4-16-11
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