Compliance with the emission specifications, vapor control
system efficiency, and certain control requirements and exemption
criteria of §§115.121 - 115.123 and 115.127 of this title
(relating to Emission Specifications; Control Requirements; Alternate
Control Requirements; and Exemptions) shall be determined by applying
one or more of the following test methods and procedures, as appropriate,
when specifically required within this division, when required by
the executive director under §101.8 of this title (relating to
Sampling), or when the owner or operator elects to conduct testing
of one or more vent gas streams.
(1) Flow rate. Test Methods 1-4 (40 Code of Federal
Regulations (CFR) Part 60, Appendix A) are used for determining flow
rates, as necessary.
(2) Concentration of volatile organic compounds (VOC).
(A) Test Method 18 (40 CFR Part 60, Appendix A) is
used for determining gaseous organic compound emissions by gas chromatography.
(B) Test Method 21 (40 CFR Part 60, Appendix A-7) for
determining VOC concentrations for the purpose of determining breakthrough
on a carbon adsorption system or carbon adsorber.
(C) Test Method 25 (40 CFR Part 60, Appendix A) is
used for determining total gaseous nonmethane organic emissions as
carbon.
(D) Test Methods 25A or 25B (40 CFR Part 60, Appendix
A) are used for determining total gaseous organic concentrations using
flame ionization or nondispersive infrared analysis.
(3) Performance requirements for flares and vapor combustors.
(A) For flares, Test Method 22 (40 CFR Part 60, Appendix
A) is used for visual determination of fugitive emissions from material
sources and smoke emissions.
(B) For flares, additional test method requirements
are described in 40 CFR §60.18(f), unless the United States Environmental
Protection Agency (EPA) or the executive director has granted a waiver
from such testing requirements.
(C) Flares in the Beaumont-Port Arthur, Bexar County,
Dallas-Fort Worth, and Houston-Galveston-Brazoria areas shall comply
with the performance test requirements of 40 CFR §60.18(b), unless
EPA or the executive director has granted a waiver from such testing
requirements.
(D) For vapor combustors, the owner or operator may
consider the unit to be a flare. Each vapor combustor in Victoria
County and the Beaumont-Port Arthur, Bexar County, Dallas-Fort Worth,
El Paso, and Houston-Galveston-Brazoria areas which the owner or operator
elected to consider as a flare shall meet the performance test requirements
of 40 CFR §60.18(b) in lieu of any testing under paragraphs (1)
and (2) of this section.
(E) Compliance with the requirements of 40 CFR §60.18(b)
will be considered to demonstrate compliance with the emission specifications
and control efficiency requirements of §115.121 and §115.122
of this title.
(4) Minor modifications. Minor modifications to these
test methods may be used, if approved by the executive director.
(5) Alternate test methods. Test methods other than
those specified in paragraphs (1) - (3) of this section may be used
if validated by 40 CFR 63, Appendix A, Test Method 301. For the purposes
of this paragraph, substitute "executive director" each place that
Test Method 301 references "administrator."
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| Source Note: The provisions of this §115.125 adopted to be effective February 19, 1990, 15 TexReg 549; amended to be effective August 1, 1992, 17 TexReg 4683; amended to be effective January 18, 2001, 26 TexReg 493; amended to be effective June 25, 2015, 40 TexReg 3907; amended to be effective May 16, 2024, 49 TexReg 3292 |
