Connecticut Administrative Code › Title 22a - Environmental Protection › 174 - Abatement of Air Pollution › Section 22a-174-4a - Source monitoring, record keeping and reporting

Current through July 10, 2024
(a)
Definitions.
For the purposes of this section, the following definitions
				shall apply. Any term not defined in this subsection shall be as defined in
				section
				22a-174-1 of the
				Regulations of Connecticut State Agencies (RCSA).
(1) "Calendar Quarter" means a consecutive
			 three (3) month non-overlapping period beginning on January 1, April 1, July 1
			 or October 1.
(2) "Continuous
			 Emission Monitoring System" or "CEMS" means the components necessary to sample,
			 quantify, record and store source emission data used for compliance with a
			 standard. A continuous emission rate monitoring system shall be considered a
			 "CEMS."
(3) "Continuous Opacity
			 Monitoring System" or "COMS" means a monitoring system that measures the light
			 obscuring properties of the exhaust gases from a source.
(4) "Diluent" means a major gaseous
			 constituent in a gaseous pollutant mixture.
(5) "Initial certification" means an audit or
			 series of audits that define the start of a valid data stream from a newly
			 installed CEMS or COMS. A passing "initial certification" also validates
			 conditionally valid data recorded prior to the completion of the "initial
			 certification."
(6) "Modified CEMS
			 or COMS" means a continuous monitoring system that undergoes significant change
			 or repair on or after the effective date of this section, where the change or
			 repair may affect the representativeness of the sample or may impact the
			 ability of the system to measure or record emissions accurately.
(7) "New CEMS or COMS" means a continuous
			 monitoring system that began operating on or after the effective date of this
			 section.
(8) "Nuisance" means
			 emissions from a source that injure or endanger the public health, safety or
			 welfare.
(9) "Out-of-control
			 period" means a period of time when a CEMS or COMS data is considered invalid.
			 Data may be considered invalid for failure to conduct a required audit, a
			 failed quality assurance audit, or instrument malfunction. An "out-of-control
			 period" commences when the data have been determined to be invalid and ends
			 when the CEMS or COMS is repaired, recalibrated, or recertified or with the
			 completion of a successful quality control audit, as necessary.
(10) "Re-certification" means, for a CEMS or
			 COMS, a declaration of data validity by means of appropriate repair,
			 replacement of components, or sufficient quality assurance and control
			 measures, following the initial certification.
(11) "Relative Accuracy Test Audit" or "RATA"
			 means a test procedure to determine the difference between an emission rate
			 determined by a CEMS and the value determined by a reference method, as
			 specified in Appendix F to 40 CFR 60 and Appendix A to 40 CFR 75, as
			 applicable.
(12) "Stack test" means
			 a performance or source test. A "stack test" measures the amount of one or more
			 specific pollutants, diluents, or surrogates being emitted; demonstrates the
			 capture efficiency of a capture system; or determines the destruction or
			 removal efficiency of a control device used to reduce emissions at a facility
			 subject to the requirements of the Clean Air Act.