New Mexico Administrative Code › Title 20 - ENVIRONMENTAL PROTECTION › Chapter 2 - AIR QUALITY (STATEWIDE) › Part 50 - OIL AND GAS SECTOR - OZONE PRECURSOR POLLUTANTS › Section 20.2.50.113 - ENGINES AND TURBINES

Current through Register Vol. 35, No. 13, July 16, 2024
A.
Applicability:
Portable and stationary natural gas-fired spark
				ignition engines, compression ignition engines, and natural gas-fired
				combustion turbines located at well sites, tank batteries, gathering and
				boosting stations, natural gas processing plants, and transmission compressor
				stations, with a rated horsepower greater than the horsepower ratings of table
				1, 2, and 3 of 20.2.50.113 NMAC are subject to the requirements of 20.2.50.113
				NMAC. Non-road engines as defined in
				40
				C.F.R. §§
										1068.30 are not subject
				to 20.2.50.113 NMAC.
B.
Emission standards:
(1) The
				owner or operator of a portable or stationary natural gas-fired spark ignition
				engine, compression ignition engine, or natural gas-fired combustion turbine
				shall ensure compliance with the emission standards by the dates specified in
				Subsection B of 20.2.50.113 NMAC, except as otherwise specified under an
				Alternative Compliance Plan approved pursuant to Paragraph (10) of Subsection B
				of 20.2.50.113 NMAC or alternative emissions standards approved pursuant to
				Paragraph (11) of Subsection B of 20.2.50.113 NMAC.
(2) The owner or operator of an existing
				natural gas-fired spark ignition engine shall complete an inventory of all
				existing engines subject to this Part by January 1, 2023, and shall prepare a
				schedule to ensure that each existing engine does not exceed the emission
				standards in table 1 of Paragraph (2) of Subsection B of 20.2.50.113 NMAC as
				follows, except as otherwise specified under an Alternative Compliance Plan
				(ACP) approved pursuant to Paragraph (10) of Subsection B of 20.2.50.113 NMAC
				or alternative emissions standards approved pursuant to Paragraph (11) of
				Subsection B of 20.2.50.113 NMAC:
(a) by
				January 1, 2025, the owner or operator shall ensure at least thirty percent of
				the company's existing engines meet the emission standards.
(b) by January 1, 2027, the owner or operator
				shall ensure at least an additional thirty-five percent of the company's
				existing engines meet the emission standards.
(c) by January 1, 2029, the owner or operator
				shall ensure that the remaining thirty-five percent of the company's existing
				engines meet the emission standards.
(d) in lieu of meeting the emission standards
				for an existing natural gas-fired spark ignition engine, an owner or operator
				may reduce the annual hours of operation of an engine such that the annual PTE
				of NOx and VOC emissions are reduced to achieve an equivalent allowable ton per
				year emission reduction as set forth in table 1 of Paragraph (2) of Subsection
				B of 20.2.50.113 NMAC, or by at least ninety-five percent per year.
Table 1 - EMISSION STANDARDS FOR EXISTING NATURAL GAS-FIRED
				  SPARK IGNITION ENGINES
Engine Type
Rated bhp
NOx
CO
NMNEHC (as propane)
2 Stroke Lean Burn
>1,000
3.0 g/bhp-hr
0.60 g/bhp-hr
0.70 g/bhp-hr
4-Stroke Lean Burn
>1,000 bhp and <1,775 bhp
2.0 g/bhp-hr
0.60 g/bhp-hr
0.70 g/bhp-hr
4-Stroke Lean Burn
>=1,775 bhp
0.5 g/bhp-hr
0.60 g/bhp-hr
0.70 g/bhp-hr
Rich Burn
>1,000 bhp
0.5 g/bhp-hr
0.60 g/bhp-hr
0.70 g/bhp-hr
(3) The owner or operator of a new natural
				gas-fired spark ignition engine shall ensure the engine does not exceed the
				emission standards in table 2 of Paragraph (3) of Subsection B of 20.2.50.113
				NMAC upon startup.
Table 2 - EMISSION STANDARDS FOR NEW NATURAL GAS-FIRED SPARK
				  IGNITION ENGINES
Engine Type
Rated bhp
NOx
CO
NMNEHC (as propane)
Lean-burn
> 500 and < 1875
0.50 g/bhp-hr
0.60 g/bhp-hr
0.70 g/bhp-hr
Lean-burn
>= 1875
0.30 g/bhp-hr
0.60 g/bhp-hr
0.70 g/bhp-hr
Rich-burn
>500
0.50 g/bhp-hr
0.60 g/bhp-hr
0.70 g/bhp-hr
(4)
				The owner or operator of a natural gas-fired spark ignition engine with
				NOx emission control technology that uses ammonia or
				urea as a reagent shall ensure that the exhaust ammonia slip is limited to 10
				ppmvd or less, corrected to fifteen percent oxygen.
(5) The owner or operator of a compression
				ignition engine shall ensure compliance with the following emission standards:
(a) a new portable or stationary compression
				ignition engine with a maximum design power output equal to or greater than 500
				horsepower that is not subject to the emission standards under Subparagraph (b)
				of Paragraph (5) of Subsection B of 20.2.50.113 NMAC shall limit
				NOx emissions to not more than nine g/bhp-hr upon
				startup.
(b) a stationary
				compression ignition engine that is subject to and complying with Subpart IIII
				of 40 CFR Part 60 , Standards of Performance for Stationary Compression
				Ignition Internal Combustion Engines, is not subject to the requirements of
				Subparagraph (a) of Paragraph (5) of Subsection B of 20.2.50.113
				NMAC.
(6) The owner or
				operator of a portable or stationary compression ignition engine with
				NOx emission control technology that uses ammonia or
				urea as a reagent shall ensure that the exhaust ammonia slip is limited to 10
				ppmvd or less, corrected to fifteen percent oxygen.
(7) The owner or operator of a stationary
				natural gas-fired combustion turbine with a maximum design rating equal to or
				greater than 1,000 bhp shall comply with the applicable emission standards for
				an existing, new, or reconstructed turbine listed in table 3 of Paragraph (7)
				of Subsection B of 20.2.50.113 NMAC: The owner or operator of an existing
				stationary natural gas-fired combustion turbine shall complete an inventory of
				all existing turbines subject to Part 50 by July 1, 2023, and shall prepare a
				schedule to ensure that each subject existing turbine does not exceed the
				emission standards in table 3 of Paragraph (7) of Subsection B of 20.2.50.113
				NMAC as follows, except as otherwise specified under an Alternative Compliance
				Plan approved pursuant to Paragraph (10) of Subsection B of 20.2.50.113 NMAC or
				alternative emissions standards approved pursuant to Paragraph (11) of
				Subsection B of 20.2.50.113 NMAC:
(a) by
				January 1, 2024, the owner or operator shall ensure at least thirty percent of
				the company's existing turbines meet the emission standards.
(b) by January 1, 2026, the owner or operator
				shall ensure at least an additional thirty-five percent of the company's
				existing turbines meet the emission standards.
(c) by January 1, 2028, the owner or operator
				shall ensure that the remaining thirty-five percent of the company's existing
				turbines meet the emission standards.
(d) in lieu of meeting the emission standards
				for an existing stationary natural gas-fired combustion turbine, an owner or
				operator may reduce the annual hours of operation of a turbine such that the
				annual PTE of NOx and VOC emissions are reduced to achieve an equivalent
				allowable ton per year emission reduction as set forth in table 3 of Paragraph
				(7) of Subsection B of 20.2.50.113 NMAC, or by at least ninety-five percent per
				year.
Table 3 - EMISSION STANDARDS FOR STATIONARY COMBUSTION
				  TURBINES
For each applicable existing natural
								gas-fired combustion turbine, the owner or operator shall ensure the turbine
								does not exceed the following emission standards no later than the schedule set
								forth in Paragraph (7)(a) of Subsection B of 20.2.50.113 NMAC:
Turbine Rating (bhp)
NOx (ppmvd @15%
								O2)
CO (ppmvd @ 15% O2)
NMNEHC (as propane, ppmvd @15%
								O2)
>=1,000 and <4,100
150
50
9
>=4,100 and <15,000
50
50
9
>=15,000
50
50 or 93% reduction
5 or 50% reduction
For each applicable new natural gas-fired
								combustion turbine, the owner or operator shall ensure the turbine does not
								exceed the following emission standards upon startup:
Turbine Rating (bhp)
NOx (ppmvd @15%
								O2)
CO (ppmvd @ 15% O2)
NMNEHC (as propane, ppmvd @15%
								O2)
>=1,000 and <4,000
100
25
9
>=4,000 and <15,900
15
10
9
>=15,900
9.0 Uncontrolled or
2.0 with Control
10 Uncontrolled or
1.8 with Control
5
(8) The owner or operator of a stationary
				natural gas-fired combustion turbine with NOx emission
				control technology that uses ammonia or urea as a reagent shall ensure that the
				exhaust ammonia slip is limited to 10 ppmvd or less, corrected to fifteen
				percent oxygen.
(9) The owner or
				operator of an emergency use engine as defined by
				40
				C.F.R. §§
											60.4211,
				60.4243,
				or
				63.6675
				is not subject to the emissions standards in this Part but shall be equipped
				with a non-resettable hour meter to monitor and record any hours of
				operation.
(10) In lieu of
				complying with the emission standards for individual engines and turbines
				established in Subsection B of 20.2.50.113 NMAC, an owner or operator may elect
				to comply with the emission standards through an Alternative Compliance Plan
				(ACP) approved by the department. An ACP must include the list of engines or
				turbines subject to the ACP, and a demonstration that the total allowable
				emissions for the engines or turbines subject to the ACP will not exceed the
				total allowable emissions under the emission standards of this Part. Prior to
				submitting a proposed ACP to the Department, the owner or operator shall comply
				with the following requirements in the order listed:
(a) The owner or operator shall contract with
				an independent third-party engineering or consulting firm to conduct a
				technical and regulatory review of the ACP proposal. The selected firm shall
				review the proposal to determine if it meets the requirements of this Part, and
				shall prepare and certify an evaluation of the proposed ACP indicting whether
				the ACP proposal adheres to the requirements of this Part.
(b) Following the independent third-party
				review, the owner or operator shall provide the ACP, along with the third-party
				evaluation and findings, to the department for posting on the department's
				website. The department shall post the ACP and the third-party review within 15
				days of receipt.
(c) Following
				posting by the department, the owner or operator shall publish a notice in a
				newspaper of general circulation announcing the ACP proposal, the dates it will
				be available for review and comment by the public, and information on how and
				where to submit comments. The dates specified in the public notice must provide
				for a thirty-day comment period.
(d) Following the close of the thirty-day
				notice and comment period, the department shall send the comments submitted on
				the ACP proposal and findings to the owner or operator. The owner or operator
				shall provide written responses to all comments to the department.
(e) Following receipt of the owner or
				operator's responses to comments received during the thirty-day comment period,
				the department shall make a determination whether to approve or deny the ACP
				proposal within 90 days. The department shall approve an ACP that meets the
				requirements of this Part, unless the department determines that the total
				allowable emissions under the ACP exceed the total allowable emissions under
				the emission standards of 20.2.50.113 NMAC. If approved by the department,the
				emission reductions and associated emission limitsfor the affected engines or
				turbinesshall become enforceable terms under this Part.
(11) The owner or operator may submit a
				request for alternative emission standards for a specific engine or turbine
				based on technical impracticability or economic infeasibility. The owner or
				operator is not required to submit an ACP proposal under Paragraph (10) of
				Subsection B of 20.2.50.113 NMAC prior to submission of a request for
				alternative emissions standards under this Paragraph (11), provided that the
				owner or operator satisfies Subparagraph (b) of Paragraph (11) of Subsection B
				of 20.2.50.113 NMAC, below. To qualify for an alternative emission standard, an
				owner or operator must comply with the following requirements:
(a) Prepare a reasonable demonstration
				detailing why it is not technically practicable or economically feasible for
				the individual engine or turbine to achieve the emissions standards in table 1
				of Paragraph (2) of Subsection B of 20.2.50.113 NMAC or table 3 of Paragraph
				(7) of Subsection B of 20.2.50.113 NMAC, as applicable;
(b) Prepare a demonstration detailing why
				emissions from the individual engine or turbine cannot be addressed through an
				ACP in a technically practicable or economically feasible manner;
(c) Prepare a technical analysis for the
				affected engine or turbine specifying the emission reductions that can be
				achieved through other means, such as combustion modifications or capacity
				limitations. The technical analysis shall include an analysis of any previous
				modifications of the source and a determination whether such modifications meet
				the definition of a reconstructed source, such that the source should be
				considered a new source under federal regulations. The analysis shall include a
				certification that the modifications to the source are not in violation of any
				state or federal air quality regulation; and
(d) Fulfill the requirements of Subparagraphs
				(a) through (c) of Paragraph (10) of Subsection B of 20.2.50.113
				NMAC.
(e) Following the close of
				the thirty-day notice and comment period, the department shall send the
				comments submitted on the alternative emission standards and findings to the
				owner or operator. The owner or operator shall provide written responses to all
				comments to the department.
(f)
				Following receipt of the owner or operator's responses to comments received
				during the thirty-day comment period, the department shall make a determination
				whether to approve or deny the alternative emission standards within 90 days.
				If approved by the department, the emission reductions and alternative emission
				standards for the affected engine or turbine shall become enforceable terms
				under this Part.
(g) If approved by
				the department, the emissions reductions and alternative standards for the
				affected engine or turbine shall become enforceable terms under this
				Part.
(12) A short-term
				replacement engine may be substituted for any engine subject to Section
				20.2.50.113 NMAC consistent with any applicable air quality permit containing
				allowances for short term replacement engines, including but not limited to New
				Source Review and General Construction Permits issued under 20.2.72 NMAC. A
				short-term replacement engine is not considered a "new" engine for purposes of
				this Part unless the engine it replaces is a "new" engine within the meaning of
				this Part. The reinstallation of the existing engine following removal of the
				short-term replacement engine is not considered a "new" engine under this Part
				unless the engine was "new" prior to the temporary replacement.