Ariz. Admin. Code § R18-9-D639 - Corrective Action
A. Applicants
for Class I, II, or III injection well permits shall identify the location of
all known wells within the injection well's area of review that penetrates the
injection zone, or in the case of Class II wells operating over the fracture
pressure of the injection formation, all known wells within the area of review
penetrating formations affected by the increase in pressure. For such wells
that are improperly sealed, completed, or abandoned, the applicant shall also
submit a plan consisting of such steps or modifications as are necessary to
prevent movement of fluid into USDWs. Where the plan is adequate, the Director
shall incorporate it into the permit as a condition. Where the Director's
review of an application indicates that the permittee's plan is inadequate, the
Director shall require the applicant to revise the plan, prescribe a plan for
corrective action as a condition of the permit under subsection (B) through (E)
of this Section, or deny the application. The Director may disregard the
provisions of
R18-9-B612 and this Section when
reviewing an application to permit an existing Class II well.
B. Any permit issued for an existing
injection well, other than Class II wells, requiring corrective action shall
include a compliance schedule requiring any corrective action accepted or
prescribed under subsection (A) of this Section to be completed as soon as
possible.
C. No owner or operator
of a new injection well may begin injection until all required corrective
action has been taken.
D. The
Director may require as a permit condition that injection pressure be so
limited that 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 shall 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.
E. When setting
corrective action requirements for Class III wells, the Director shall consider
the overall effect of the project on the hydraulic gradient in potentially
affected USDWs, and the corresponding changes in potentiometric surface or
surfaces and flow direction or 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
R18-9-G647(B)
shall be designed to verify the validity of such determinations.
F. In determining the adequacy of corrective
action proposed by the applicant under this Section and in determining the
additional steps needed to prevent fluid movement into USDWs, the following
criteria and factors shall be considered by the Director:
1. Nature and volume of injected
fluid;
2. Nature of native fluids
or by-products of injection;
3.
Potentially affected population;
4.
Geology;
5. Hydrology;
6. History of the injection
operation;
7. Completion and
plugging records;
8. Abandonment
procedures in effect at the time the well was abandoned; and
9. Hydraulic connections with
USDWs.
Notes
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