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
Universal Citation: 20 NM Admin Code 20.2.50.113
Current through Register Vol. 35, No. 18, September 24, 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.
C. Monitoring requirements:
(1) Maintenance and
repair for a spark ignition engine, compression ignition engine, and stationary
combustion turbine shall meet the manufacturer recommended maintenance schedule
as defined in 20.2.50.112 NMAC.
(2)
Maintenance conducted consistent with an applicable NSPS or NESHAP requirement
shall be deemed to be in compliance with Paragraph (1) of Subsection (C) of
20.2.50.113 NMAC.
(3) Catalytic
converters (oxidative, selective, and non-selective) and AFR controllers shall
be inspected and maintained according to manufacturer specifications as defined
in 20.2.50.112 NMAC, and shall include replacement of oxygen sensors as
necessary for oxygen-based controllers. During periods of catalytic converter
or AFR controller maintenance, the owner or operator shall shut down the engine
or turbine until the catalytic converter or AFR controller can be replaced with
a functionally equivalent spare to allow the engine or turbine to return to
operation.
(4) For equipment
operated for 500 hours per year or more, compliance with the emission standards
in Subsection B of 20.2.50.113 NMAC shall be demonstrated within 180 days of
the effective date applicable to the source as defined by Paragraphs (2) and
(7) of Subsection B of this Section or, if installed more than 180 days after
the effective date, within 60 days after achieving the maximum production rate
at which the source will be operated, but not later than 180 days after initial
startup of such source. Compliance with the applicable emission standards shall
be demonstrated by performing an initial emission test for NOx and VOC, as
defined in
40
CFR 51.100(s) using U.S. EPA
reference methods or ASTM D6348. Periodic monitoring shall be conducted
annually to demonstrate compliance with the allowable emission standards and
may be demonstrated utilizing a portable analyzer or EPA reference methods. For
units with g/hp-hr emission standards, the engine load shall be calculated
using the following equations:
Where: LVH = lower heating value, btu/scf, or btu/gal, as appropriate; and
BSFC = brake specific fuel consumption
If the manufacturer's rated BSFC is not available, an operator may use an alternative load calculation methodology based on available data.
(a) emissions testing shall be
conducted within 10 percent of 100 percent peak (or the highest achievable)
load. The load and the parameters used to calculate it shall be recorded to
document operating conditions at the time of testing and shall be included with
the test report.
(b) emissions
testing utilizing a portable analyzer shall be conducted in accordance with the
requirements of the current version of ASTM D6522. If a portable analyzer has
met a previously approved department criterion, the analyzer may be operated in
accordance with that criterion until it is replaced.
(c) the default time period for a test run
shall be at least 20 minutes.
(d)
an emissions test shall consist of three separate runs, with the arithmetic
mean of the results from the three runs used to determine compliance with the
applicable emission standard.
(e)
during emissions tests, pollutant and diluent concentration shall be monitored
and recorded. Fuel flow rate shall be monitored and recorded if stack gas flow
rate is determined utilizing U.S. EPA reference method 19. This information
shall be included with the periodic test report.
(f) stack gas flow rate shall be calculated
in accordance with U.S. EPA reference method 19 utilizing fuel flow rate (scf)
determined by a dedicated fuel flow meter and fuel heating value (Btu/scf). The
owner or operator shall provide a contemporaneous fuel gas analysis (preferably
on the day of the test, but no earlier than three months before the test date)
and a recent fuel flow meter calibration certificate (within the most recent
quarter) with the final test report. Alternatively, stack gas flow rate may be
determined by using U.S. EPA reference methods 1 through 4 or through the use
of manufacturer provided fuel consumption rates.
(g) upon request by the department, an owner
or operator shall submit a notification and protocol for an initial or annual
emissions test.
(h) emissions
testing shall be conducted at least once per calendar year. Emission testing
required by Subparts GG, IIII, JJJJ, or KKKK of 40 CFR 60, or Subpart ZZZZ of
40 CFR 63, may be used to satisfy the emissions testing requirements if it
meets the requirements of 20.2.50.113 NMAC and is completed at least once per
calendar year.
(i) The results of
emissions testing demonstrating compliance with the emission standard for CO
may be used as a surrogate to demonstrate compliance with the emission standard
for NMNEHC.
(5) The
owner or operator of equipment operated less than 500 hours per year shall
monitor the hours of operation using a non-resettable hour meter and shall test
the unit at least once per 8760 hours of operation in accordance with the
emissions testing requirements in Paragraph (4) of Subsection C of 20.2.50.113
NMAC.
(6) An owner or operator of
an emergency use engine as defined by
40
C.F.R. §§
60.4211,
60.4243,
or
63.6675
shall monitor the hours of operation by a non-resettable hour meter.
(7) An owner or operator limiting the annual
operating hours of an engine or turbine to meet the requirements of Paragraph
(2) or (7) of Subsection B of 20.2.50.113 NMAC shall monitor the hours of
operation by a non-resettable hour meter.
(8) Prior to any monitoring, testing,
inspection, or maintenance of an engine or turbine, the owner or operator shall
date and time stamp the event, and the monitoring data entry shall be made in
accordance with the requirements of 20.2.50.112 and 113 NMAC.
D. Recordkeeping requirements:
(1) The owner or operator
of a spark ignition engine, compression ignition engine, or stationary
combustion turbine shall maintain a record in accordance with 20.2.50.112 NMAC
for the engine or turbine. The record shall include:
(a) the make, model, serial number, and
unique identification number for the engine or turbine;
(b) location of the source (latitude and
longitude);
(c) a copy of the
engine, turbine, or control device manufacturer recommended maintenance and
repair schedule as defined in 20.2.50.112 NMAC; and
(d) all inspection, maintenance, or repair
activity on the engine, turbine, and control device, including:
(i) the date and time stamp(s), including GPS
of the location, of an inspection, maintenance, or repair;
(ii) the date a subsequent analysis was
performed (if applicable);
(iii)
the name of the person(s) conducting the inspection, maintenance or
repair;
(iv) a description of the
physical condition of the equipment as found during the inspection;
(v) a description of maintenance or repair
conducted; and
(vi) the results of
the inspection and any required corrective actions.
(2) The owner or operator of a
spark ignition engine, compression ignition engine, or stationary combustion
turbine shall maintain records of initial and annual emissions testing for the
engine or turbine for a period of five years. The records shall include:
(a) make, model, and serial number for the
tested engine or turbine;
(b) the
date and time stamp(s), including GPS of the location, of any monitoring event,
including sampling or measurements;
(c) date analyses were performed;
(d) name of the person(s) and the qualified
entity that performed the analyses;
(e) analytical or test methods
used;
(f) results of analyses or
tests;
(g) calculated emissions of
NOx and VOC in lb/hr and tpy; and
(h) operating conditions at the time of
sampling or measurement.
(3) The owner or operator of an emergency use
engine as defined by
40
C.F.R. §§
60.4211,
60.4243,
or
63.6675
shall record the total annual hours of operation as recorded by the
non-resettable hour meter.
(4) The
owner or operator limiting the annual operating hours of an engine or turbine
to meet the requirements of Paragraph (2) or (7) of Subsection B of 20.2.50.113
NMAC shall record the hours of operation by a non-resettable hour meter. The
owner or operator shall calculate and record the annual NOx and VOC emission
calculation, based on the engine or turbine's actual hours of operation, to
demonstrate that an equivalent allowable ton per year emission reduction as set
forth in table 1 or table 3 of Paragraph (2) or (7) of Subsection B of
20.2.50.113 NMAC, or the ninety-five percent emission reduction requirement is
met.
E. Reporting requirements: The owner or operator shall comply with the reporting requirements in 20.2.50.112 NMAC.
Disclaimer: These regulations may not be the most recent version. New Mexico 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.
This site is protected by reCAPTCHA and the Google
Privacy Policy and
Terms of Service apply.
