Administrative Rules of Montana › Department 17 - ENVIRONMENTAL QUALITY › Chapter 17.8 - AIR QUALITY › Subchapter 17.8.15 - Compliance Assurance Monitoring › Rule 17.8.1511 - OPERATION OF APPROVED MONITORING

Current through Register Vol. 13, July 5, 2024
(1) The
				owner or operator shall conduct the monitoring required under this subchapter
				upon issuance of an air quality operating permit that includes such monitoring,
				or by such later date specified in the permit pursuant to ARM
				17.8.1510(4).
(2) At all times, the owner or operator shall
				maintain the monitoring, including but not limited to, maintaining necessary
				parts for routine repairs of the monitoring equipment.
(3) Except for, as applicable, monitoring
				malfunctions, associated repairs, and required quality assurance or control
				activities (including, as applicable, calibration checks and required zero and
				span adjustments), the owner or operator shall conduct all monitoring in
				continuous operation (or shall collect data at all required intervals) at all
				times that the pollutant-specific emissions unit is operating. Data recorded
				during monitoring malfunctions, associated repairs, and required quality
				assurance or control activities shall not be used for purposes of this
				subchapter, including data averages and calculations, or fulfilling a minimum
				data availability requirement, if applicable. The owner or operator shall use
				all the data collected during all other periods in assessing the operation of
				the control device and associated control system. A monitoring malfunction is
				any sudden, infrequent, not reasonably preventable failure of the monitoring to
				provide valid data. Monitoring failures that are caused entirely or in part by
				poor maintenance or careless operation are not malfunctions.
(4) Upon detecting an excursion or
				exceedance, the owner or operator shall restore operation of the
				pollutant-specific emissions unit (including the control device and associated
				capture system) to its normal or usual manner of operation as expeditiously as
				practicable in accordance with good air pollution control practices for
				minimizing emissions. The response shall include minimizing the period of any
				startup, shutdown or malfunction and taking any necessary corrective actions to
				restore normal operation and prevent the likely recurrence of the cause of an
				excursion or exceedance (other than those caused by excused startup or shutdown
				conditions). Such actions may include initial inspection and evaluation,
				recording that operations returned to normal without operator action (such as
				through response by a computerized distribution control system), or any
				necessary follow-up actions to return operation to within the indicator range,
				designated condition, or below the applicable emission limitation or standard,
				as applicable.
(5) Determination of
				whether the owner or operator has used acceptable procedures in response to an
				excursion or exceedance under (4) above, will be based on information
				available, which may include but is not limited to, monitoring results, review
				of operation and maintenance procedures and records, and inspection of the
				control device, associated capture system, and the process.
(6) After approval of monitoring under this
				subchapter, if the owner or operator identifies a failure to achieve compliance
				with an emission limitation or standard for which the approved monitoring did
				not provide an indication of an excursion or exceedance while providing valid
				data, or the results of compliance or performance testing document a need to
				modify the existing indicator ranges or designated conditions, the owner or
				operator shall promptly notify the department and, if necessary, submit a
				proposed modification to the air quality operating permit to address the
				necessary monitoring changes. Such a modification may include, but is not
				limited to, reestablishing indicator ranges or designated conditions, modifying
				the frequency of conducting monitoring and collecting data, or the monitoring
				of additional parameters.
75-2-217,
					 75-2-218, MCA; IMP,
					 75-2-217,
					 75-2-218,
					 MCA;