Current through Register Vol. 48, No. 38, September 20, 2024
a) Upon the Agency's request, the owner or
operator of a batch operation shall conduct testing to demonstrate compliance
with Section 218.501 of this Subpart. The owner or operator shall, at its own
expense, conduct such tests in accordance with the applicable test methods and
procedures specified in Section
218.503(d),
(e), and (f) of this Subpart.
b) Notwithstanding subsection (a) of this
Section, flares and process boilers used to comply with control requirements of
Section
218.501
of this Subpart shall be exempt from performance testing
requirements.
c) When a flare is
used to comply with the control requirements of Section
218.501
of this Subpart, the flare shall comply with the requirements of
40 CFR
60.18, incorporated by reference at Section
218.112
of this Part.
d) The owner or
operator of a batch operation that is exempt from the control requirements of
Section
218.501
of this Subpart shall demonstrate, upon the Agency's request, the absence of
oversized gas moving equipment in any manifold. Gas moving equipment shall be
considered oversized if it exceeds the maximum requirements of the exhaust flow
rate by more than 30 percent.
e)
For the purpose of demonstrating compliance with the control requirements in
Section
218.501
of this Subpart, the batch operation shall be run at representative operating
conditions and flow rates during any performance test.
f) The following methods in 40 CFR 60,
Appendix A, incorporated by reference at Section
218.112
of this Part, shall be used to demonstrate compliance with the reduction
efficiency requirement set forth in Section
218.501
of this Subpart:
1) Method 1 or 1A, as
appropriate, for selection of the sampling sites if the flow measuring device
is not a rotameter. The control device inlet sampling site for determination of
vent stream VOM composition reduction efficiency shall be prior to the control
device and after the control device;
2) Method 2, 2A, 2C, or 2D, as appropriate,
for determination of gas stream volumetric flow rate flow measurements, which
shall be taken continuously. No traverse is necessary when the flow measuring
device is an ultrasonic probe;
3)
Method 25A or Method 18, if applicable, to determine the concentration of VOM
in the control device inlet and outlet;
A) The
sampling time for each run shall be as follows:
i) For batch cycles less than eight hours in
length, readings shall be taken continuously over the entire length of the
batch cycle with a maximum of 15-minute intervals between measurements if using
Method 25A. If using Method 18, readings shall be taken continuously with a
maximum of 15-minute intervals between measurements throughout the batch cycle
unless it becomes necessary to change the impinger train, in which case a
30-minute interval shall not be exceeded.
ii) For batch cycles of eight hours and
greater in length, the owner or operator may either test in accordance with the
test procedures defined in subsection (f)(3)(A)(i) of this Section or the owner
or operator may elect to perform tests, pursuant to either Method 25A or Method
18, only during those portions of each emission event which define the emission
profile of each emission event occurring within the batch cycle. For each
emission event of less than four hours in duration, the owner or operator shall
test continuously over the entire emission event as set forth in subsection
(f)(3)(A)(i) of this Section. For each emission event of greater than four
hours in duration, the owner or operator shall elect either to perform a
minimum of three one hour test runs during the emission event or shall test
continuously over the entire emission event within each single unit operation
in the batch process train. To demonstrate that the portion of the emission
event to be tested define the emission profile for the emission event, the
owner or operator electing to rely on this option shall develop an emission
profile for the entire emission event. Such emission profile shall be based
upon either process knowledge or test data collected. Examples of information
that could constitute process knowledge include, but are not limited to,
calculations based on material balances and process stoichiometry. Previous
test results may be used provided such results are still relevant to the
current process vent stream conditions.
iii) For purposes of subsection (f)(3) of
this Section, the term "emission event" shall be defined as a discrete period
of venting that is associated with a single unit operation. For example, a
displacement of vapor resulting from the charging of a single unit operation
with VOM will result in a discrete emission event that will last through the
duration of the charge and will have an average flow rate equal to the rate of
the charge. The expulsion of expanded single unit operation vapor space when
the vessel is heated is also an emission event. Both of these examples of
emission events and others may occur in the same single unit operation during
the course of the batch cycle. If the flow rate measurement for any emission
event is zero, in accordance with subsection (f)(2) of this Section, then such
event is not an emission event for purposes of this Section.
B) The mass emission rate from the
process vent or inlet to the control device shall be determined by combining
concentration and flow rate measurements taken simultaneously at sampling sites
selected in accordance with subsection (f)(1) of this Section throughout the
batch cycle;
C) The mass emission
rate from the control device outlet shall be obtained by combining
concentration and flow rate measurements taken simultaneously at sampling sites
selected in accordance with subsection (f)(1) of this Section throughout the
batch cycle; and
D) The efficiency
of the control device shall be determined by integrating the mass emission
rates obtained in subsections (f)(3)(B) and (f)(3)(C) of this Section, over the
time of the batch cycle and dividing the difference in inlet and outlet mass
flow totals by the inlet mass flow total.
g) Upon request by the Agency to conduct
testing, an owner or operator of a batch operation which has installed a
scrubber, a shell and tube condenser using a non-refrigerated cooling media, or
any other control device which meets the criteria of Section
218.501(c)
of this Subpart, shall demonstrate that such device achieves the control
efficiency applicable within Section
218.501
of this Subpart upon the earlier to occur of the date the device is replaced or
December 31, 1999.
h) The owner or
operator of a batch operation may propose an alternative test method or
procedures to demonstrate compliance with the control requirements set forth in
Section
218.501
of this Subpart. Such method or procedures shall be approved by the Agency and
USEPA as evidenced by federally enforceable permit conditions.
i) In the absence of a request by the Agency
to conduct performance testing in accordance with the provisions of this
Section, a source may demonstrate compliance by the use of engineering
estimates or process stoichiometry.
