Illinois Administrative Code › Title 35 - ENVIRONMENTAL PROTECTION › Part 218 - ORGANIC MATERIAL EMISSION STANDARDS AND LIMITATIONS FOR THE CHICAGO AREA › Subpart V - BATCH OPERATIONS AND AIR OXIDATION PROCESSES › Section 218.503 - Performance and Testing Requirements for Batch Operations

Current through Register Vol. 48, No. 28, July 12, 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.