Conn. Agencies Regs. § 25-128-44 - Length of casing, drilled wells
A twenty (20) foot minimum length of casing pipe shall be required in the construction of any drilled well, subject to the following exceptions for specific, geological and hydrological conditions:
(a) All unconsolidated overburden and other
loose, caving zones shall be cased.
(b) The casing pipe shall extend at least
five (5) feet into the bedrock, as shown by Figure 1.
(c) In the event, however, that the
overburden or the upper five (5) feet of the bedrock constitute the primary
potable water producing zones, the requirement of length of subsection (b)
shall not apply.
(d) In the
condition of the presence of caving zones, the casing pipe or other adequate
protective seal shall extend as great a distance below the caving zone as the
driller deems necessary to insure well stability.
(e) In the event geological conditions
require telescoping of the casing pipe and the use of linear pipe, the
respective lengths and diameters necessary to accomplish effective drilling
shall be used, the annular spaces shall be made watertight where appropriate to
prevent the travel of contaminants.
Notes
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