The owner or operator of each batch process operation in the Beaumont/Port
Arthur and Houston/Galveston areas shall comply with the following.
(1) Performance testing conditions. For the purpose of determining
compliance with the control requirements of this division (relating to Batch
Processes), the process unit shall be run at a scenario that represents maximum
batch rates (e.g., three batches per day, 1,000 lbs per batch, etc.) during
any performance test.
(2) Test methods. The owner or operator of each batch process
operation shall use the following methods to determine compliance with the
percent reduction efficiency requirement of §115.162 of this title (relating
to Control Requirements).
(A) Flow rate.
(i) Test Methods 1 or 1A (40 Code of Federal Regulations (CFR)
60, Appendix A) as appropriate, shall be used for selection of the sampling
sites if the flow rate measuring device is a rotameter. No traverse is necessary
when the flow measuring device is an ultrasonic probe. The control device
inlet sampling sites for determination of vent stream volatile organic compounds
(VOC) composition reduction efficiency shall be before the control device
and after the control device.
(ii) Test Methods 2, 2A, 2C, or 2D (40 CFR 60, Appendix A)
as appropriate, shall be used for determination of gas stream volumetric flow
rate. Flow rate measurements shall be made continuously.
(B) Concentration of VOC. Test Method 18 (40 CFR 60, Appendix
A) (gas chromatography) or Test Method 25A (40 CFR 60, Appendix A) (flame
ionization) shall be used to determine the concentration of VOC in the control
device inlet and outlet.
(i) The sampling time for each run shall be the entire length
of the batch cycle, during which readings shall be taken:
(I) continuously if Method 25A is used; or
(II) as often as is possible using Method 18, with a maximum
of one-minute intervals between measurements throughout the batch cycle.
(ii) The emission rate of the process vent or inlet to the
control device shall be determined by combining continuous concentration and
flow rate measurements at simultaneous points throughout the batch cycle.
(iii) The mass flow rate of the control device outlet shall
be determined by combining continuous concentration and flow rate measurements
at simultaneous points throughout the batch cycle.
(iv) The efficiency of the control device shall be determined
by integrating the mass flow rates obtained in clauses (ii) and (iii) of this
subparagraph over the time of the batch cycle, and dividing the difference
in inlet and outlet mass flow totals by the inlet mass flow total.
(C) Performance requirements for flares and vapor combustors.
(i) For flares, the performance test requirements of 40 CFR
60.18(b) shall apply.
(ii) For vapor combustors, the owner or operator may consider
the unit to be a flare and meet the performance test requirements of 40 CFR
60.18(b).
(iii) Compliance with the requirements of 40 CFR 60.18(b) will
be considered to represent 98% control of the VOC in the flare inlet.
(D) Minor modifications. Minor modifications to these test
methods may be used, if approved by the executive director.
(E) Alternate test methods. Test methods other than those specified
in subparagraphs (B) and (C) of this paragraph may be used if validated by
40 CFR 63, Appendix A, Test Method 301 (effective December 29, 1992). For
the purposes of this paragraph, substitute "executive director" each place
that Test Method 301 references "administrator."
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