The center line of a drilled or bored well shall
not be out of plumb more than 12 inches per 100 feet of depth.
When caving or sloughing formations that would
interfere with the proper functioning of well or the pumping equipment
are encountered, entrance of foreign material shall be prevented by
means of liner pipe, cementing or other approved methods.
Upon completing construction or reconstruction
operations, the constructor of the well shall carry out finishing
operations as follows:
A. Flushing and testing. Flush the well at a rate at least equal to 200% of the expected pump capacity for a minimum of six hours' continuous pumping or until the water discharging is clear and free from sand. During the flushing operation, the amount of drawdown and stability of the yield shall be determined. See §
A167-2 and the definition of "adequate water supply" in §
A167-7A.
B. Sampling. After completion of well, the constructor
shall obtain and have tested by a qualified laboratory a sample of
the well water untreated and submit to the Board three certified copies
of the test report for approval by the Board.
C. Sealing. After testing and sampling, the well constructor shall seal the well watertight. (See §
A167-9D.)
If the results of analysis (see §
A167-17B) indicate unsafe water in the well, the well constructor shall take such additional measures as approved by the Board to assure a safe water supply. The safety of the water shall be judged by additional sampling and analysis as required by the Board. The cost per analysis is nominal, and all such costs shall be borne by the applicant.
The use of explosives for increasing or recovering
yield of any well developed into limestone, granite or quartzite formations
or of any sandstone well in which casings and liners are not grouted
or in which the diameter of the drill hole is larger than that of
casings or liners above the point of shooting shall be undertaken
only under permit from the Board.
The use of dry ice, detergents, chlorine, acids
or other chemicals in wells for the purpose of increasing or restoring
yield shall be undertaken only under permit from the Board.
Within 10 days after completing the construction
or reconstruction of a well, the constructor thereof shall submit
a construction report to the Board upon a form furnished by the Board.