The owner of any well shall, upon abandonment of any existing well or test hole, effectively seal and fill such wells and test holes in accordance with the requirements of §§ A167-31 and A167-32. Any debris or obstructions that may interfere with proper sealing of the well or test hole must first be removed.
Any lining material shall be removed at least
down to the existing water level. Crushed stone not exceeding 11/2
inches in size and/or earth free of debris shall be used to pack the
excavation up to the existing water level. A layer of puddled clay
or concrete at least five feet thick shall be placed above the bottom
fill. The remainder of the excavation shall be filled with earth free
of debris and large stones. The final fill must be well tamped in
layers not exceeding 18 inches in thickness.
The bottom portion of the well in the water-bearing
stratum shall be filled with clean gravel or three-fourths-inch crushed
stone for a depth of at least five feet but not exceeding 15 feet.
In no event shall the bottom fill extend into the casing. The remainder
of the well shall be sealed with cement grout or with alternate layers
of cement grout and gravel or three-fourths-inch crushed stone. The
final layer shall be cement grout and shall be at least 20 feet deep
measured from the top of the casing. The final layer of grout shall
be inserted through a fill pipe extending into the casing and removed
as the grout fill is installed or shall be thoroughly rodded. If the
top of the well casing terminates below existing grade, the excavation
to the top of the casing shall be filled with earth free of debris
and large stones and well tamped in place.
A report shall be made to the Board by the owner
of every well which has been abandoned or temporarily removed from
service. Such report shall include a detailed description of location,
construction and geologic features and method of sealing.
