Current through Register Vol. 48, No. 38, September 20, 2024
a)
Coverage. An applicant for a Class I or Class III injection well permit must
identify the location of all known wells within the injection well's area of
review that penetrate the injection zone. For such wells that are improperly
sealed, completed, or abandoned, the applicant must also submit a plan
consisting of such steps or modifications as are necessary to prevent movement
of fluid into USDWs ("corrective action"). Where the plan is adequate, the
Agency must incorporate it into the permit as a condition. Where the Agency's
review of an application indicates that the permittee's plan is inadequate
(based on the factors in 35 Ill. Adm. Code
730.107) , the
Agency must require the applicant to revise the plan, prescribe a plan for
corrective action as a condition of the permit under subsection (b), or deny
the application.
b) Requirements
1) Existing Injection Wells. Any permit
issued for an existing injection well requiring corrective action must include
a compliance schedule requiring any corrective action accepted or prescribed
under subsection (a) to be completed as soon as possible.
2) New Injection Wells. No permit for a new
injection well may authorize injection until all required corrective action has
been taken.
3) Injection pressure
limitation. The Agency may require as a permit condition that injection
pressure in the injection zone does not exceed hydrostatic pressure at the site
of any improperly completed or abandoned well within the area of review. This
pressure limitation must satisfy the corrective action requirement.
Alternatively, such injection pressure limitation can be part of a compliance
schedule and last until all other required corrective action has been
taken.
4) Class III Injection Wells
Only. When setting corrective action requirements the Agency must consider the
overall effect of the project on the hydraulic gradient in potentially affected
USDWs and the corresponding changes in potentiometric surfaces and flow
directions rather than the discrete effect of each well. If a decision is made
that corrective action is not necessary based on the determinations above, the
monitoring program required in 35 Ill. Adm. Code
730.133(b)
must be designed to verify the validity of such
determinations.
BOARD NOTE: Derived from
40 CFR 144.55
(2017).
