Ill. Admin. Code tit. 35, § 730.110 - Plugging and Abandoning Wells
a)
Requirements for Class I, II, and III injection wells.
1) Prior to abandoning a Class I or Class III
injection well, the well must be plugged with cement in a manner that will not
allow the movement of fluids either into or between underground sources of
drinking water. The Agency may allow Class III injection wells to use other
plugging materials if it is satisfied that such materials will prevent movement
of fluids into or between underground sources of drinking water.
2) Placement of the cement plugs must be
accomplished by one of the following means:
A) The Balance Method;
B) The Dump Bailer Method;
C) The Two-Plug Method; or
D) An alternative method approved by the
Agency in the permit that will reliably provide a comparable level of
protection to underground sources of drinking water.
3) The well to be abandoned must be in a
state of static equilibrium with the mud weight equalized top to bottom, either
by circulating the mud in the well at least once or by a comparable method
prescribed by the Agency, prior to the placement of the cement plug.
4) The plugging and abandonment required in
35 Ill. Adm. Code
704.181(f)
and
704.188
must also demonstrate adequate protection of USDWs in the case of a Class III
injection well that underlies or is in an aquifer that has been exempted
pursuant to Section
730.104.
The Agency must prescribe aquifer cleanup and monitoring where it deems it
necessary and feasible to insure adequate protection of USDWs.
b) Requirements for Class IV
injection wells. Prior to abandoning a Class IV injection well, the owner or
operator must close the well in accordance with 35 Ill. Adm. Code
704.145(b).
c) Requirements for Class V injection wells.
1) Prior to abandoning a Class V injection
well, the owner or operator must close the well in a manner that prevents the
movement of fluid containing any contaminant into an underground source of
drinking water if the presence of that contaminant may cause a violation of any
primary drinking water regulation pursuant to 35 Ill. Adm. Code 611, may cause
a violation of any of the ground water quality standards of 35 Ill. Adm. Code
620, or may otherwise adversely affect the health of persons. Closure
requirements for motor vehicle waste disposal wells and large-capacity
cesspools are listed at Section
704.289.
2) The owner or operator must dispose of or
otherwise manage any soil, gravel, sludge, liquids, or other materials removed
from or adjacent to the well in accordance with all applicable federal, State,
and local regulations and requirements.
Notes
Amended at 31 Ill. Reg. 1281, effective December 20, 2006
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