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 1006 - TEST PITS
Section Env-Wq 1006.04 - Number of Test Pits
Current through Register No. 13, March 27, 2025
(a) For each lot in a subdivision where ledge is encountered at less than 4 feet, the applicant shall dig test pits to satisfy the requirements of (c), below. The number of test pits shall be determined by a permitted designer, but in no event shall less than 2 test pits be dug.
(b) For ISDS, the applicant shall dig at least one test pit at each proposed effluent disposal site.
(c) For ISDS where ledge is encountered at less than 4 feet, the applicant shall dig a test pit at opposite corners of the disposal area and 35 feet down-slope of the system. If either of the down-slope test pits is less than 3 feet to ledge, then probes shall be required at a 45 degree angle from the bed corners or as required to prove receiving layer requirements.
(d) All holes dug to test the soil, except for holes dug to determine a wetland boundary in accordance with Env-Wq 1014.03, shall be considered test pits.
(See Revision Note at chapter heading for Env-Wq 1000) #9086, eff 2-9-08