| (a) Tests required under §112.104 of this title
(relating to Testing Requirements) must be conducted using the test
methods in 40 Code of Federal Regulations (CFR) Part 60, Appendices
A-1 through A-8 and Appendix B or other methods as specified in this
section, except as provided in 40 CFR §60.8(b).
(b) Fuel and waste gas sulfur content must be determined
using American Society for Testing and Materials (ASTM) Method D6667
(Determination of Total Volatile Sulfur in Gaseous Hydrocarbons),
ASTM Method D1945 (Standard Test Method for Analysis of Natural Gas
by Gas Chromatography), United States Environmental Protection Agency
(EPA) Method 15A or 16A of Appendix A to 40 CFR Part 60, ASTM Method
D4468, or ASTM Method D5504 if it is conducted in a manner that analyzes
all sulfur-containing compounds present.
(c) Sulfur dioxide (SO2)
in exhaust gases must be determined using EPA Test Method 6 or 6C
(40 CFR, Part 60, Appendix A).
(d) For flares subject to emissions limitations or
standards in §112.102 of this title (relating to Control Requirements),
the owner or operator shall use flare test methods and procedures
in 40 CFR §60.104a.
(e) Alternate methods as approved by the executive
director and the EPA may be used.
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