Regulatory Text: 
Louisiana Administrative Code, Title 33 ENVIRONMENTAL QUALITY, Part III Air (LAC 33:III)

Chapter 21. Control of Emissions of Organic Compounds 

Subchapter N. Method 43 - Capture Efficiency Test Procedures
Initially approved by EPA May 5, 1994 (59 FR 23166) at 40 CFR 52.970(c)(60)(I) effective June 6, 1994 as  Chapter 61, Subchapter A. Method 43—Capture Efficiency Test Procedures, Sections 6121, 6123, 6125, 6127, 6129, and 6131 as adopted in the Louisiana Register July 20, 1991 (LR 17:653). 
AQ145  §§6121 to §6131 moved, without changes, to new §§2155 to §2160; LAd34; LA021.02; AQ145; LR 22:1212p21,47 (12/20/1996)
Approved by EPA July 5, 2011 (76 FR 38977) effective August 4, 2011 (LAd34) LA021.
Regulations.gov docket EPA-R06-OAR-2007-0924

§2159.A to C as approved by EPA January 28, 2016 (81 FR 04891) effective 
February 29, 2016 (LAd47), Regulations.gov docket EPA-R06-OAR-2012-0434 [LA039].

Unless otherwise indicated, paragraphs are as approved by EPA May 5, 1994 (59 FR 23166) effectove June 6, 1994 (LAc60, paragraph I)

Outline as approved by EPA July 5, 2011 (76 FR 38977) effective August 4, 2011 (LAd34):
Section 2155.  Principle, LAd34
Section 2156.  Definitions, LAd34
Section 2157.  Applicability, LAd34
Section 2158.  Specific Requirements, LAd34
Section 2159.  Recordkeeping and Reporting, LAd34, LAd47
Section 2160.  Procedures, LAd34 


Section 2155 [from Section 6121].  Principle

   Temporary or permanent enclosures are employed to capture and measure volatile organic compound (VOC) air emissions that are not captured by the capture system under test within the enclosure.  This measurement along with simultaneous measurements on the system under test allows calculation of the capture efficiency of the capture system.

****End Louisiana Section 2155 SIP effective August 4, 2011***LAd34***LA021***uxu****

Section 2156 [from Section 6123]. Definitions
NOTE: Although the Federal Register amendatory language (see 76 FR 38989) in the  July 5, 2011 (76 FR 38977)  Federal Register shows the definitions of "PTE" and "TTE" as adopted in the  Louisiana Register  December 20, 1997 as being approved by EPA, this compilation of Section 2156 assumes that, although struck out in the submittal to EPA, the definitions of "PTE" and "TTE" as adopted in the  Louisiana Register   August 20, 2001 (LR 27:1223 to 1225) (AQ213), as being approved by EPA in the  July 5, 2011  Federal Register. This is to ensure consistency with the revisions to Subchapter N adopted in the Louisiana Register August 20, 2001. If anyone disagrees with this assumption, send a message to Bill Deese at deese.william@epa.gov as to why this is believed to be an invalid assumption. The struck-out definition of "BE" adopted in the August 20, 2001 Louisiana Register was superseded by a revision to "BE" adopted in the Louisiana Register October 20, 2003 (AQ232) and approved by EPA in the July 5, 2011 Federal Register action.  See note in Section 2160 below.

   For purposes of this regulation, the following definitions and abbreviations apply:

AQ232   §2156.A.BE;LAd34;LA021.08;AQ232;LR29:2038(10/20/2003)
   BE -- a building or room enclosure that contains a process that emits VOC. If a BE is to serve as a PTE or TTE, the appropriate requirements given in 40 CFR, Part 51, Appendix M, Method 204 must be met.

   Capture -- the containment or recovery of emissions from a process for direction into a duct which may be exhausted through a stack or sent to a control device.

   Capture System -- all equipment (including, but not limited to, hoods, ducts, fans, booths, ovens, dryers, etc.) that contains, collects and transports an air pollutant to a control device.

   Capture Efficiency -- the weight per unit time of VOC entering a capture system and delivered to a control device divided by the weight per unit time of total VOC generated by a source of VOC, expressed as a percentage.

   Control Device -- equipment (such as an incinerator or carbon adsorber) used to reduce, by destruction or removal, the amount of air pollutant(s) in an air stream prior to discharge to the ambient air.

   Control System -- a combination of one or more capture system(s) and control devices working in concert to reduce discharges or pollutants to the ambient air.

   Destruction or Removal Efficiency -- the efficiency, expressed as a decimal fraction, of a control device in destroying or removing contaminants calculated as one minus the amount of VOC exiting the control device divided by the amount of VOC entering the control device.

   Gas/Gas Method -- either of two methods for determining capture which rely only on gas phase measurements.  One method requires construction of a temporary enclosure (TTE) to assure all would be fugitive emissions are measured while the other method uses the room or building which houses the emission source as an enclosure.

   Hood -- a partial enclosure or canopy for capturing and exhausting, by means of a draft, the organic vapors or other fumes rising from a coating process or other source.

   Liquid/Gas Method -- either of two methods for determining capture which require both gas phase and liquid phase measurements and analysis.  One liquid/gas method requires construction of a temporary enclosure, the other uses the building or room which houses the facility as an enclosure.

   Overall Emission Reduction Efficiency -- the weight per unit time of VOC removed by a control device divided by the weight per unit time of VOC emitted by an emission source, expressed as a percentage.  The overall emission reduction efficiency is the product of the capture efficiency and the control equipment destruction or removal efficiency.

   F-the mass of VOC leaving the process as gaseous fugitive emissions.

   G-the mass of VOC captured and delivered to a control device.

   L-the mass of VOC input to the process in liquid form.

AQ213   §2156;LAd34;LA021.06;AQ213;LR27:1223(8/20/2001) 
      PTE -- a permanent total enclosure, which contains a 
process that emits VOC and meets the specifications given 
in 40 CFR, part 51, appendix M, method 204, section 6.

AQ213   §2156;LAd34;LA021.06;AQ213;LR27:1223(8/20/2001) 
      TTE -- a temporary total enclosure which is built around 
a process that emits VOC and meets the specifications given 
in 40 CFR, part 51, appendix M, method 204, section 5.

****End Louisiana Section 2156 SIP effective August 4, 2011***LAd34***LA021***uxu***

Section 2157 [from Section 6125]. Applicability

AQ161*   § 2157.A;LAd34;LA021.04;AQ161*;LR23:1679(12/20/1997)
   A. The requirements of LAC 33:III.2158 shall apply to 
all regulated VOC emitting processes employing a control 
system except as provided below.

AQ213   §2157.B;LAd34;LA021.06;AQ213;LR27:1223(8/20/2001) 
   B. If a source installs a PTE that meets the requirements 
in 40 CFR, part 51, appendix. M, method 204, and 
which directs all VOC to a control device, the capture efficiency is 
assumed to be 100 percent, and the source is exempted from 
the requirements described in LAC 33:III.2158. This does 
not exempt a source from performance of any control device 
efficiency testing required under these or any other 
regulations. In addition, a source must demonstrate all 
criteria for a PTE are met during the testing for control 
efficiency.

   C.  If a source uses a control device designed to collect and recover VOC (e.g. carbon adsorber), an explicit measurement of capture efficiency is not necessary if the conditions given below are met. The overall control of the system can be determined by directly comparing the input liquid VOC (L) to the recovered liquid VOC.  The general procedure for use in this situation is given in 40 CFR 60.433 with the following additional restrictions.

       1.  The source must be able to equate solvent usage with solvent recovery on a 24-hour (daily) basis, rather than a 30-day weighted average as given in 40 CFR 60.433.  This must be done within 72 hours following each 24-hour period.  In addition, one of the following two criteria must be met:

       2.  The solvent recovery system (i.e., capture and control system) must be dedicated to a single process line (e.g., one process line venting to a carbon adsorber system), or

       3.  If the solvent recovery system controls multiple  process lines, the source must be able to demonstrate that the overall control (i.e., the total recovered solvent VOC divided by the sum of liquid VOC input to all process lines venting to the control system) meets or exceeds the most stringent standard applicable for any process line venting to the control system.

****End Louisiana Section 2157 SIP effective August 4, 2011***LAd34***LA021***uxu***

Section 2158 [from Section 6127]. Specific Requirements

   A.  The capture efficiency of a process line shall be measured using one of the four protocols given in Subsection C of this Section.

   B.  Any error margin associated with a test protocol may not be incorporated into the results of a capture efficiency test.

   C.  Any affected source must use one of the following four protocols to measure capture efficiency, unless a suitable alternative protocol is approved by the administrative authority*.

AQ213   §2158.C.1;LAd34;LA021.06;AQ213;LR27:1223(8/20/2001) 
      1. Gas/Gas Method Using TTE. The specifications to 
determine whether a temporary enclosure is considered a 
TTE are given in 40 CFR, part 51, appendix M, method 204, 
section 5. The capture efficiency equation to be used for this 
protocol is:

             Gw
      CE = ---------
           (Cw + Fw)

where:
     CE = capture efficiency, decimal fraction.
     Gw = mass of VOC captured and delivered to control device using a TTE.
     Fw = mass of fugitive VOC that escapes from a TTE.
     40 CFR, part 51, appendix M, method 204C, section 9 is used to obtain Gw. 40 CFR, part 51, appendix M, method 204D, section 9 is used to obtain Fw.

AQ213   §2158.C.2;LAd34;LA021.06;AQ213;LR27:1223(8/20/2001) 
      2. Liquid/Gas Method Using TTE. The specifications 
to determine whether a temporary enclosure is considered a 
TTE are given in 40 CFR, part 51, appendix M, method 204, 
section 5. The capture efficiency equation to be used for this 
protocol is:

            (L - F)
      CE = ---------
               L
where:
     CE = capture efficiency, decimal fraction.
     L  = mass of liquid VOC input to process.
     F  = mass of fugitive VOC that escapes from a TTE.
     40 CFR, part 51, appendix M, method 204, section A.10 is used to obtain L. 40 CFR, part 51, appendix M, method 204D, section 9 is used to obtain F.

AQ213   §2158.C.3; LAd34; LA021.06; AQ213; LR 27:1223 (8/20/2001) 
      3. Gas/Gas Method Using the Building or Room (BE) 
in which the Affected Source is Located as the Enclosure 
and in which G and F are Measured while Operating only 
the Affected Facility. All fans and blowers in the building or 
room must be operated as they would under normal 
production. The capture efficiency equation to be used for 
this protocol is:

              G
      CE = ---------
            C + F_B

where:
     CE = capture efficiency, decimal fraction.
     G  = mass of VOC captured and delivered to control device.
     F_B = mass of fugitive VOC that escapes from building enclosure.
     40 CFR, part 51, appendix M, method 204C, section 9 is used to obtain G. 40 CFR, part 51, appendix M, method 204E, section 9 is used to obtain F_B.

AQ213   §2158.C.4;LAd34;LA021.06;AQ213;LR27:1223(8/20/2001) 
      4. Liquid/Gas Method Using the Building or Room 
(BE) in which the Affected Source is Located as the 
Enclosure and in which L and F are Measured while 
Operating only the Affected Facility. All fans and blowers in 
the building or room must be operated as they would under 
normal production. The capture efficiency equation to be 
used for this protocol is:


           (L - F_B)
      CE = -------
              L

where:
     CE = capture efficiency, decimal fraction.
     L  = mass of liquid VOC input to process.
     F_B = mass of fugitive VOC that escapes from building enclosure.
     40 CFR, part 51, appendix M, method 204, section 10.A is used to obtain L. 40 CFR, part 51, appendix M, method 204E, section 9 is used to obtain F_B.

****End Louisiana Section 2158 SIP effective August 4, 2011***LAd34***LA021***uxu***

Section 2159 [from Section 6129]. Recordkeeping and Reporting

§2159.A to C SIP effective to February 28, 2016.
   A.  All affected facilities must maintain a copy of the capture efficiency protocol on file.  All results of appropriate test methods and CE protocols must be reported to the administrative authority within sixty days of the test date.  A copy of the results must be kept on file with the source.
   B.  If any changes are made to capture or control equipment, the source is required to notify the administrative authority of these changes and a new test may be required.
   C.  The source must notify the administrative authority 30 days prior to performing any capture efficiency and/or control efficiency tests.

§2159.A to C as submitted to EPA August 14, 2009 [LA039.03] and resubmitted 
to EPA October 2015 [LA039.05], MM002 LR 33:2087 (October 20, 2007).
Approved by EPA January 28, 2016 (81 FR 04891) effective February 29, 2016 (LAd47),
Regulations.gov docket EPA-R06-OAR-2012-0434 [LA039].
   A. All affected facilities must maintain a copy of the
capture efficiency protocol on file. All results of appropriate
test methods and CE protocols must be reported to the Office
of Environmental Assessment within 60 days of the test date.
A copy of the results must be kept on file with the source.
   B. If any changes are made to capture or control
equipment, the source is required to notify the Office of
Environmental Assessment of these changes and a new test
may be required.
   C. The source must notify the Office of Environmental
Assessment 30 days prior to performing any capture
efficiency and/or control efficiency tests.

AQ213   §2159.D;LAd34;LA021.06;AQ213;LR27:1224(8/20/2001) 
   D. A source utilizing a PTE must demonstrate that this 
enclosure meets the requirement given in 40 CFR, part 51, 
appendix M, method 204 for a PTE during any testing of a 
control device.

AQ213   §2159.E;LAd34;LA021.06;AQ213;LR27:1224(8/20/2001) 
   E. A source utilizing a TTE must demonstrate that its 
TTE meets the requirements given in 40 CFR. part 51, 
appendix M, method 204 for a TTE during testing of their 
control device. The source must also provide documentation 
that the quality assurance criteria for a TTE have been 
achieved.

****End Louisiana Section 2159 SIP effective August 4, 2011***LAd34***LA021***uxu***

****End Louisiana Section 2159 SIP effective February 29, 2016***LAd47***LA039***w2h***

Section 2160 [from Section 6131]. Procedures.

NOTE: Although the Federal Register amendatory language (see 76 FR 38989) shows only paragraphs 2160.A and 2160.B, as adopted in the Louisiana Register August 20, 2001 (LR 37:1223 to 1225) (AQ213), as being approved by EPA July 5, 2011, this compilation of Section 2160 assumes that the entire paragraph 2160.C was also approved by EPA thus replacing the entire previous SIP-approved Section 2160. This assumption is to ensure consistency with the revisions to Subchapter N adopted in the Louisiana Register August 20, 2001 (LR 37:1223 to 1225) (AQ213).  Another reason for this assumption is to keep from having to reproduce here the procedures in "Section 6131. Procedures: Introductory paragraph and list of procedures" in the previous SIP-approved Method 43 - Capture Efficiency Test Procedures in Chapter 61, Subchapter A. If anyone disagrees with this assumption, send a message to Bill Deese at deese.william@epa.gov as to why this is believed to be an invalid assumption. See also the note in Section 2156 above. The revisions to Section 2160.C.4.d and Section 2160.D.4.d adopted in the Louisiana Register July 20, 1998 (LR 24:1286, AQ171*) and listed at the bottom of the July 5, 2011 Federal Register amendatory language (76 FR 38989) are revisions to Section 6131.C. Procedure G.1 - Captured VOC Emissions and Section 6131.D. Procedure G.2 - Captured VOC Emissions (Dilution Technique), which are not included in this compilation. These sections have been updated with these revisions in this web site in Chapter 61, Subchapter A , under the heading “LAC 33:III.Air; SIP effective 1989-05-08 (LAc49) to 2011-08-03”.


AQ213   §2160.A;LAd34;LA021.06;AQ213;LR27:1224(8/20/2001) 
   A. Except as provided in Subsection C of this Section, the regulations at 40 CFR part 51, appendix M, as amended July 1, 2000, are hereby incorporated by reference.

AQ213   §2160.B;LAd34;LA021.06;AQ213;LR27:1224(8/20/2001) 
   B. The volumes containing those federal regulations listed in Subsection A of this Section may be obtained from the Superintendent of Documents, United States Government Printing Office, Washington, DC 20402.

AQ213   §2160.C to C.b.iv;LAd34;LA021.06;AQ213;LR27:1224(8/20/2001) 
   C. Modifications and Exceptions. The following modifications and exceptions are made to the incorporated federal standards. 
      1. Method 204C, Section 8.2.3.1. A sampling point shall be centrally located outside of the temporary total enclosure (TTE) at four equivalent diameters from each natural draft opening (NDO), if possible.
      2. Other NDOs
         a. This step is optional. Determine the exhaust flow rate, including that of the control device, from the enclosure and the intake air flow rate. If the exhaust flow rate divided by the intake air flow rate is greater than 1.1, then all other NDOs are not considered to be significant exhaust points.
         b. If the option above is not taken, identify all other NDOs and other potential points through which fugitive emissions may escape the enclosure. Then use the following criteria to determine whether flow rates and VOC concentrations need to be measured:
            i. using the appropriate flow direction indicator, determine the flow direction. An NDO with zero or inward flow is not an exhaust point;
            ii. measure the outward volumetric flow rate from the remainder of the NDOs. If the collective flow rate is 2 percent, or less, of the flow rate from 40 CFR part 51, appendix M, method 204E, section 8.1.1, then these NDOs, except those within two equivalent diameters (based on NDO opening) from VOC sources, may be considered to be nonexhaust points;
            iii. if the percentage calculated in Subsection C.2.b.ii of this Section is greater than 2 percent, those NDOs (except those within two equivalent diameters from VOC sources) whose volumetric flow rate totals 2 percent of the flow rate from 40 CFR part 51, appendix M, method 204E, section 8.1.1 may be considered as nonexhaust points. All remaining NDOs shall be measured for volumetric flow rate and VOC concentrations during the capture efficiency (CE)
test:
            iv. the tester may choose to measure VOC concentrations at the forced exhaust points and the NDOs. If the total VOC emissions from the NDOs are less than 2 percent of the emissions from the forced draft and roof NDOs, then these NDOs may be eliminated from further consideration.