Section 115.125 - Testing RequirementsCompliance 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, 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, 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."30 Tex. Admin. Code § 115.125
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 by Texas Register, Volume 40, Number 25, June 19, 2015, TexReg 3941, eff. 6/25/2015