New Hampshire Code of Administrative Rules
We - Water Well Board
Chapter We 600 - STANDARDS FOR THE CONSTRUCTION, MAINTENANCE AND ABANDONMENT OF WELLS
Part We 602 - NEW WELL CONSTRUCTION
Section We 602.32 - Wells Constructed by Excavation: Backfill
Universal Citation: NH Admin Rules We 602.32
Current through Register No. 40, October 3, 2024
(a) Backfill for a well constructed by excavation shall be:
(1)
Placed in a manner that will deter intrusion of soil into the well and reduce
the likelihood of surface waters percolating directly into the well through the
backfill;
(2) Covered with at least
2 feet of impervious material, including but not limited to, clay or hardpan;
and
(3) Compacted to reduce
settlement.
(b) Organic material including but not limited to loam, peat, building paper, hay or soil shall not be used as or in backfill.
(c) When crushed stone is used around the casing, a non-polluting barrier, such as pea stone, shall be used over the crushed stone to prevent fine soils from entering the crushed stone.
(d) The ground surface at the well shall be raised and graded to drain away from the well taking into consideration future settlement of the backfill and shall have a minimum slope of 2 inches per foot.
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