Illinois Administrative Code
Title 35 - ENVIRONMENTAL PROTECTION
Part 730 - UNDERGROUND INJECTION CONTROL OPERATING REQUIREMENTS
Subpart B - CRITERIA AND STANDARDS APPLICABLE TO CLASS I NON-HAZARDOUS WASTE INJECTION WELLS
Section 730.113 - Operating, Monitoring, and Reporting Requirements
Universal Citation: 35 IL Admin Code ยง 730.113
Current through Register Vol. 48, No. 38, September 20, 2024
a) Operating Requirements. Operating requirements must, at a minimum, specify the following:
1) That, except during stimulation, injection
pressure at the wellhead must not exceed a maximum that must be calculated so
as to assure that the pressure in the injection zone during injection does not
initiate new fractures or propagate existing fractures in the injection zone.
In no case must injection pressure initiate fractures in the confining zone or
cause the movement of injection or formation fluids into an underground source
of drinking water;
2) That
injection between the outermost casing protecting underground sources of
drinking water and the well bore is prohibited; and
3) That, unless an alternative to a packer
has been approved pursuant to Section
730.112(c),
the annulus between the tubing and the long string of casings must be filled
with a fluid approved by permit condition, and a pressure prescribed by permit
condition must be maintained on the annulus.
b) Monitoring Requirements. Monitoring requirements must, at a minimum, include all of the following:
1) The analysis of the injected fluids with
sufficient frequency to yield representative data of their
characteristics;
2) Installation
and use of continuous recording devices to monitor injection pressure, flow
rate, and volume, and the pressure on the annulus between the tubing and the
long string of casing;
3) A
demonstration of mechanical integrity pursuant to Section
730.108 at
least once every five years during the life of the well; and
4) The type, number, and location of wells
within the area of review to be used to monitor any migration of fluids into
and pressure in the underground sources of drinking water, the parameters to be
measured, and the frequency of monitoring.
c) Reporting Requirements. Reporting requirements must, at a minimum, include:
1)
Quarterly reports to the Agency on each of the following:
A) The physical, chemical, and other relevant
characteristics of injection fluids;
B) The monthly average, maximum, and minimum
values for injection pressure, flow rate and volume, and annular pressure;
and
C) The results of monitoring
prescribed pursuant to subsection (b)(4).
2) Reporting the results, with the first
quarterly report after the completion of each of the following:
A) Periodic tests of mechanical
integrity;
B) Any other test of the
injection well conducted by the permittee if required by permit condition;
and
C) Any well work
over.
d) Ambient
1) Based on a site-specific
assessment of the potential for fluid movement from the well or injection zone
and on the potential value of monitoring wells to detect such movement, the
Agency must require the owner or operator to develop a monitoring program. At a
minimum, the Agency must require monitoring of the pressure buildup in the
injection zone annually, including at a minimum, a shut down of the well for a
time sufficient to conduct a valid observation of the pressure fall-off
curve.
2) When prescribing a
monitoring system the Agency may also require:
A) Continuous monitoring for pressure changes
in the first aquifer overlying the confining zone. When such a well is
installed, the owner or operator must, on a quarterly basis, sample the aquifer
and analyze for constituents specified by permit condition;
B) The use of indirect, geophysical
techniques to determine the position of the waste front, the water quality in a
formation designated by permit condition or to provide other site-specific
data;
C) Periodic monitoring of the
ground water quality in the first aquifer overlying the injection
zone;
D) Periodic monitoring of the
ground water quality in the lowermost USDW; and
E) Any additional monitoring necessary to
determine whether fluids are moving into or between USDWs.
BOARD NOTE: Derived from 40 CFR 146.13 (2017).
Disclaimer: These regulations may not be the most recent version. Illinois may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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