Section We 602.32 - Wells Constructed by Excavation: Backfill(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.N.H. Admin. Code § We 602.32
Derived From Volume XXXVII Number 2, Filed January 12, 2017, Proposed by #12083, Effective 3/1/2017, Expires 3/1/2027.