New Mexico Administrative Code › Title 20 - ENVIRONMENTAL PROTECTION › Chapter 2 - AIR QUALITY (STATEWIDE) › Part 101 - CARBON DIOXIDE EMISSION STANDARDS FOR COAL-FIRED ELECTRIC GENERATING FACILITIES › Section 20.2.101.113 - MONITORING REQUIREMENTS

Current through Register Vol. 35, No. 13, July 16, 2024
A. Owners or
				operators of an affected EGF shall prepare a monitoring plan to quantify the
				hourly CO2 mass emission rate in tons per hour (tph) in
				accordance with the applicable provisions of this Section and
				40 CFR Part
				75.53(g). The monitoring
				plan shall be submitted to the Department and in place prior to reporting
				emission data and the results of the monitoring system certification test under
				Subsection A of 20.2.101.113 NMAC. The monitoring plan shall be updated as
				appropriate.
B. Owners or operators
				shall determine the hourly CO2 mass emissions in pounds
				or tons from each affected electric generating unit (EGU) according to
				paragraphs (1) through (5) of Subsection B of 20.2.101.113 NMAC.
(1) Owners or operators shall install,
				certify, operate, maintain, and calibrate a CO2
				continuous emission monitoring system (CEMS) to directly measure and record the
				hourly average CO2 concentration in the affected EGU
				exhaust gas emitted to the atmosphere, and a flow monitoring system to measure
				hourly average stack gas flow rates, in accordance with
				40 CFR Part
				75.10(a)(3)(i). As an
				alternative to direct measurement of the CO2
				concentration, provided that the affected EGU does not employ carbon separation
				(e.g., carbon capture and storage), owners or operators may use data from a
				certified oxygen (O2) monitor to calculate the hourly
				average CO2 concentration in accordance with 40 CFR Part
				75.10(a)(3)(iii) . If the CO2 concentration is measured
				on a dry basis, owners or operators shall also install, certify, operate,
				maintain, and calibrate a continuous moisture monitoring system, in accordance
				with 40 CFR Part 75.11(b) . Alternatively, owners or operators may either use
				an appropriate fuel-specific default moisture value from 40 CFR Part 75.11(b)
				or submit a petition to the Department for a site-specific default moisture
				value.
(2) For each CEMS used to
				comply with this Part, owners or operators shall meet the applicable
				certification and quality assurance procedures in 40 CFR Part 75.20 and
				Appendices A and B of 40 CFR Part 75.
(3) Owners or operators shall use only
				unadjusted exhaust gas volumetric flow rates to determine the hourly
				CO2 mass emission rate from each affected EGU. Owners or
				operators shall not apply the bias adjustment factors described in Section
				7.6.5 of Appendix A to 40 CFR Part 75 to the exhaust gas flow rate
				data.
(4) Owners or operators shall
				select an appropriate reference method to set up the flow monitor and perform
				the ongoing Relative Accuracy Test Audit (RATA), in accordance with 40 CFR Part
				75. If owners or operators use a Type-S pitot tube or a pitot tube assembly for
				the flow RATA, owners or operators shall calibrate the pitot tube or pitot tube
				assembly. Owners or operators may not use the 0.84 default Type-S pitot tube
				coefficient specified in Method 2.
(5) Owners or operators shall calculate the
				hourly CO2 mass emissions (in tons) as described in
				Subparagraphs (a) through (c) of Paragraph (5) of Subsection B of 20.2.101.113
				NMAC. Owners and operators shall only perform this calculation for valid
				operating hours, as defined in 40 CFR Part 60.5540(a)(1) .
(a) Begin with the hourly
				CO2 mass emission rate (tons/hour), obtained either from
				Equation F-11 of Appendix F of 40 CFR Part 75 (if the
				CO2 concentration is measured on a wet basis), or by
				following the procedure in section 4.2 of Appendix F of 40 CFR Part 75 (if the
				CO2 concentration is measured on a dry basis).
(b) Next, multiply each hourly
				CO2 mass emission rate by the EGU or stack operating
				time in hours (as defined in 40 CFR Part 72.2), to calculate the tons of
				CO2).
(c)
				The hourly CO2 emission rate and the EGU (or stack)
				operating hours used to calculate the CO2 emission rate
				shall be recorded under 20.2.101.114 NMAC and shall be reported as required
				under 20.2.101.115 NMAC.