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

Chapter 21.  Control of Emission of Organic Compounds

Subchapter B.  Organic Solvents

Section 2123. Organic Solvents
As approved by EPA July 5, 2011 (76 FR 38977) effective August 4, 2011 (LAd34),
Regulations.gov docket EPA-R06-OAR-2007-0924 [LA021].
Errors in Federal Register amendatory language (page 76 FR 38985-38986):
(1) The State approved date (i.e., date published in the Louisiana Register) for Section 2123.C.11.b should be May 20, 1996, not December 20, 1997;
(2) Delete the first Section 2123.G with State approval date December 20, 1997.

Paragraph A as adopted in the Louisiana Register April 20, 2011 (LR 37:1150)(AQ320) approved by EPA December 2, 2011 (76 FR 75467) effective January 3, 2012 (LAd39), 
Regulations.gov docket EPA-R06-OAR-2010-0775 [LA032].

§2123.D.1 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 previously approved by EPA 05/05/94 (59 FR 23166) effective 06/06/94 (LAc60) and 07/25/96 (61 FR 38591) effective 08/26/96 (LAc64).

Paragraph A approved by EPA May 5, 1994 (59 FR 23166) SIP effective June 6, 1994 (LAc60) to January 2, 2012.
AQ51   §2123.A;LAc60;AQ51;LR17:0654(07/20/1991)
   A.  Except as provided in LAC 33:III.2123.B and C, any emission source using organic solvents having an emission of organic solvents of more than three pounds (1.3 kilograms) per hour or 15 pounds (6.8 kilograms) per day shall reduce the emission, where feasible, by incorporating one or more of the following control methods:

Paragraph A approved by EPA December 2, 2011 (76 FR 75467) SIP effective January 3, 2012 (LAd39).
AQ320   §2123.A;LAd39;LA032.06;AQ320;LR37:1150(04/20/2011)
NOTE: AQ320 is in document LA032.06, Appendix A, Final Rule, in the Regulations.gov docket
     A. Except as provided in Subsections B and C of this
Section, any emissions source using organic solvents having
an emission of volatile organic compounds resulting from
the application of surface coatings equal to or more than 15
pounds (6.8 kilograms) per day, or an equivalent level of 2.7
tons per 12-month rolling period, shall control emissions of
volatile organic compounds through the use of low solvent
coatings, as provided in Subsection C of this Section, or,
where feasible, by incorporating one or more of the
following control methods:

       1.  incineration, provided ninety percent of the carbon in the organic compounds being incinerated is oxidized to carbon dioxide (except as provided in LAC 33:III.2123.D).

       2.  carbon adsorption of the organic compounds.

       3.  any other equivalent means as may be approved by the administrative authority.  Once a source exceeds the emission cutoff specified in this paragraph that source shall be subject and shall remain subject to the requirements of LAC 33:III.2123.A regardless of future emission rates.

   B.  Soldering operations, painting and coating operations, not listed in LAC 33:III.2123.C, and dry cleaning operations using organic solvents which are not considered photochemically reactive shall be considered for exemption from the requirements of LAC 33:III.2123.

AQ189   §2123.B.1;LAd34;LA021.06;AQ189;LR25:1240 (7/20/1999)
      1. For the purposes of this Subsection, a
photochemically reactive solvent is any solvent with an
aggregate of more than 20 percent of its total volume
composed of the chemical compounds classified below or 
which exceeds any of the following individual percentage
composition limitations, referred to the total volume of solvent:

           a.  a combination of hydrocarbons, alcohols, aldehydes, esters, ethers, or ketones having an olefinic or cycloolefinic type of unsaturation:  five percent;

           b.  a combination of aromatic compounds with eight or more carbon atoms to the molecule except ethylbenzene:  eight percent;

           c.  a combination of ethylbenzene, ketones having branched hydrocarbon structures, trichloroethylene or toluene: 20 percent.

AQ149   §2123.B.2;LAd34;LA021.05;AQ149;LR24:0023(1/20/1998)
      2. Whenever any organic solvent or any constituent of
an organic solvent may be classified from its chemical
structure into more than one of the above groups of organic
compounds, it shall be considered as a member of the most
reactive chemical group, that is, that group having the least
allowable percent of the total volume of solvents.

AQ149   §2123.C.introductory paragraph;LAd34;LA021.05;AQ149;LR24:0023(1/20/1998)
   C. Surface Coating Industries.  No person may cause,
suffer, allow, or permit volatile organic compound (VOC)
emissions from the surface coating of any materials affected
by this Subsection to exceed the emission limits as specified
in this Section.

                        VOC Emission Limitation

Affected Facility       Lbs. Per        Kgs. Per
                        Gal. of         Liter of
                        Coating         Coating
                        (minus          (minus
                        water and       water and
                        exempt          exempt
                        solvent)        solvent)

1.  Large Appliance
Coating Industry.  The
following emission
limits shall apply:
Prime, single or
topcoat application
area, flashoff area
and oven                2.8             0.34


2.  Surface Coating of
Cans.  The following
emission limits shall
apply:

Sheet Basecoat
(exterior and
interior) and
over-varnish:

Two-piece can exterior
(basecoat and
over-varnish)           2.8             0.34

Two and three-piece
can interior body
spray, two-piece can
exterior end (spray or
roll coat)              4.2             0.51

Three-piece can
side-seam spray         5.5             0.66

End sealing compound    3.7             0.44

3.  Surface Coating of
Coils.  The following
emission limits shall
apply:

Prime and topcoat or
single coat operation   2.6             0.31

4.  Surface Coating of
Paper.  The following
emission limits shall
apply:

Coating Line            2.9             0.35

5.  Surface Coating of
Fabrics.  The
following emission
limits shall apply:

Fabric Facility         2.9             0.35

Vinyl Coating Line      3.8             0.45

6.  Surface Coating of
Assembly Line
Automobiles and Light

Duty Trucks.  The
following emission
limits shall apply:
Prime application,
flashoff area and oven
(determined on a
monthly basis)          1.2             0.14

Primer surface
application flashoff
area and oven           2.8             0.34

Topcoat application,
flashoff area and oven  2.8             0.34

Final repair
application, flashoff
area and oven           4.8             0.58

As an alternative to the emission limitation of 2.8 pounds of VOC per
gallon of coating applied for the primer surfacer and/or topcoat
application, compliance with these emission limitations may be
demonstrated by meeting a standard of 15.1 pounds of VOC per gallon of
solids deposited.

7.  Surfacecoating-magnet wire
coating.  The
following emission
limits shall apply:
Coating Line            1.7             0.20

8.  Surface Coating of Metal Furniture.
Volatile organic compound emissions from
metal furniture coating lines shall not
exceed three pounds per gallon (0.36
kg/liter) of coating (minus water and
exempt solvent).

9.  Surface Coating of
Miscellaneous Metal
Parts and Products.
The following emission
limits shall apply:
Clear Coat              4.3             0.52

Air or force air dried
items (not oven dried)  3.5             0.42

Frequent color change
and/or large numbers
of colors applied, or
first coat on
untreated ferrous
substrate               3.0             0.36

Outdoor or harsh
exposure or extreme
performance
characteristics         3.5             0.42

No or infrequent color
change, or small
number of colors
applied

a.  Powder Coating      0.4             0.05

b.  Other               3.0             0.36

These limits do not apply to operations covered in 1-8 or 11 herein or
exterior coating of fully assembled aircraft, auto refinishing, and
auto customizing topcoating (processing less than 35 vehicles per
day).

10.  Factory Surface
Coating of Flat Wood
Paneling.  The
following emission
items shall apply:       VOC Emission Limitation

                        Lbs. Per 1000   Kgs. Per
                        1000 sq. ft.    100 sq. meter
                        of Coated       of Coated
                        Surface         Surface

Printed interior wall
panels made of
hardwood plywood and
thin particleboard      6.0             2.9

Natural finish
hardwood plywood
panels                  12.0            5.8

Class II finishes for
hardboard paneling      10.0            4.8

                       Daily Weighted Average
                       VOC Emission Limitation

                        Lbs. Per        Kgs.
                        Gal. of         Per
                        Coating         Liter
                        as              of Coating
                        applied         as applied
                        (minus          (minus
                        water and       water and
                        exempt          exempt
                        solvent         solvent

AQ136   §2123.C.11;LAd34;LA021.03;AQ136;LR22:0338p5(5/20/1996)
11. Surface Coating for
Marine Vessels and
Oilfield Tubulars and
Ancillary Oilfield
Equipment

a.  Except as otherwise provided in this rule, a person shall not
apply a marine coating with a VOC content in excess of
the following limits:

Baked Coatings          3.5             0.42

Air-Dried Single-
Component Alkyd or
Vinyl Flat or Semi
Gloss Finish Coatings   3.5             0.42

Two Component Coatings  3.5             0.42

AQ136   §2123.C.11.b;LAd34;LA021.03;AQ136;LR22:0338p5(5/20/1996)
b. Except for the parishes of Ascension, Calcasieu, East 
Baton Rouge, Iberville, Livingston, Pointe Coupee, and West 
Baton Rouge, in which the VOC limitations in LAC 
33:III.2123.C.11.a may not be exceeded, specialty marine 
coatings and coatings on oilfield tubulars and ancillary 
oilfield equipment with a VOC content not in excess of the 
following limits may be applied:

Heat Resistant           3.5            0.42

Metallic Heat
Resistant               4.42            0.53

High Temperature (Fed.
Spec. TT-P-28)          5.41            0.65

Pre-Treatment Wash
Primer                  6.5             0.78

Underwater Weapon       3.5             0.42

Elastomeric Adhesives
With 15% Weight
Natural or Synthetic
Rubber                  6.08            0.73

Solvent-Based
Inorganic Zinc Primer   5.41            0.65

Pre-Construction &
Interior Primer         3.5             0.42

Exterior Epoxy Primer   3.5             0.42

Navigational Aids       3.5             0.42

Sealant for Wire-
Sprayed Aluminum        5.4             0.648

Special Marking         4.08            0.49

Tack Coat (Epoxies)     5.08            0.61

Low Activation
Interior Coating        4.08            0.49

Repair & Maintenance
Thermoplastic           5.41            0.65

Extreme High Gloss
Coating                 4.08            0.49

Antenna Coating         4.42            0.53

Antifoulant             3.66            0.44

High Gloss Alkyd        3.5             0.42

Anchor Chain Asphalt
Varnish (Fed. Spec.
TT-V-51)                5.2             0.62

Wood Spar Varnish
(Fed. Spec. TT-V-119)   4.1             0.492

Dull Black Finish
Coating (DOD-P-15146)   3.7             0.444

Tank Coatings (DOD-P-
23236)                  3.5             0.42

Potable Water Tank
Coating (DOD-P-23236)   3.7             0.444

Flight Deck Markings
(DOD-C-24667)           4.2             0.504

Vinyl Acrylic Top
Coats                   5.4             0.648

Antifoulant Applied to
Aluminum Hulls          4.5             0.55

   For the purposes of this rule the following definitions shall apply:

   Air Dried Coating-any coating that is cured at a temperature below 90 degrees C (194 degrees F).

   Baked Coating-any coating that is cured at a temperature at or above 90 degrees C (194 degrees F).

   Extreme High Gloss Coating-any coating which achieves at least 95 percent reflectance on a 60 degree meter when tested by ASTM Method D-523.

   Heat Resistant Coating-any coating which during normal use must withstand temperatures of at least 204 degrees C (400 degrees F).

   High Gloss Coating-any coating which achieves at least 85 percent reflectance on a 60 degree meter when tested by ASTM Method D-523.

   High Temperature Coating-any coating which must withstand temperatures of at least 426 degrees C (800 degrees F).

   Marine Coating-any coating, except unsaturated polyester resin (fiberglass) coatings, containing volatile organic materials and applied by brush, spray, roller, or other means to ships, boats, and their appurtenances, and to buoys and oil drilling rigs intended for the marine environment.

   Metallic Heat Resistant Coating-any coating which contains more than 5 grams of metal particles per liter as applied and which must withstand temperatures over 80 degrees C (175 degrees F).
   Repair and Maintenance Thermoplastic Coating-a resin-bearing coating in which the resin becomes pliable with the application of heat, such as vinyl, chlorinated rubber, or bituminous coatings.

   D.  Control Techniques

§2123.D.1 SIP effective to February 28, 2016.
OS065   §2123.D.1;LAd34;LA021.11;OS065;LR31:2440(10/20/2005)
      1. If add-on controls such as incinerators or vapor
recovery systems are used to comply with the emission
limitation requirements, in terms of pounds per gallon of
solids as applied (determined in accordance with Paragraph
D.8 of this Section), the volatile organic compound capture
and abatement system shall be at least 80 percent efficient
overall. All surface coating facilities shall submit to the
Office of Environmental Services, Air Permits Division, for
approval, design data for each capture system and emission
control device that is proposed for use. The effectiveness of
the capture system (i.e., capture efficiency) shall be
determined using the procedure specified in Paragraph E.6
of this Section.

§2123.D.1 as submitted to EPA August 14, 2009 [LA039.03] and resubmitted 
to EPA October 2015 [LA039.05], MM002 LR 33:2086 (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].
      1. If add-on controls such as incinerators or vapor
recovery systems are used to comply with the emission
limitation requirements, in terms of pounds per gallon of
solids as applied (determined in accordance with Paragraph
D.8 of this Section), the volatile organic compound capture
and abatement system shall be at least 80 percent efficient
overall. All surface coating facilities shall submit to the
Office of Environmental Services, for approval, design data
for each capture system and emission control device that is
proposed for use. The effectiveness of the capture system
(i.e., capture efficiency) shall be determined using the
procedure specified in Paragraph E.6 of this Section.

       2.  If a person wishes to use low solvent technology to meet any of the emission limits specified in Regulation LAC 33:III.2123.C.1 through 10 and if the technology to be used for any particular application is not now proven but is expected to be proven in a reasonable length of time, he may request a compliance date extension from the administrative authority*. Compliance date extensions will require progress reports every 90 days, or as directed, to show reasonable progress, as determined by the administrative authority, toward technology to meet the specified emission limitation.

       3.  Compliance will be determined by the procedure specified in "Control of Volatile Organic Emissions for Existing Stationary Sources.  Vol 2-Surface Coating of Cans, Coils, Paper, Fabric, Autos and Lt. Duty Trucks", (EPA 450/2-77-008), the procedures specified in "Measurement of Volatile Organic Compounds" (EPA-450/2-78-041), a method approved by the administrative authority or certification from the paint manufacturer concerning the solvent makeup of the paint. Exempt solvents shall be treated the same as water in calculating the VOC content per gallon of coating.  Exempt solvents are those compounds listed in LAC 33:III.2117.

       4.  Compliance with the alternative emission limit established in LAC 33:III.2123.C.6 of 15.1 pounds of VOC per gallon of solids deposited shall be determined in accordance with EPA's "Protocol for Determining the Daily Volatile Organic Compound Emission Rate of Automobile and Light Duty Truck Topcoat Operations", EPA 450/3-88-018, December, 1988.

       5.  A plant wide emission reduction plan may be approved by the administrative authority* if it can be demonstrated by the surface coating facility that any emissions in excess of those allowed for a given coating line will be compensated for by reducing emissions from regulated sources within the surface coating facility.

AQ219A   §2123.D.6;LAd34;LA021.09;AQ219A;LR28:1765(8/20/2002)
      6. Surface coating facilities on any property in
Ascension, Calcasieu, East Baton Rouge, Iberville,
Livingston, Pointe Coupee, and West Baton Rouge parishes
that when controlled have a potential to emit, at maximum
production, a combined weight (total from the property) of
VOCs less than 10 tons in any consecutive 12 calendar
months are exempt from the provisions of Subsection C of
this Section. Surface coating facilities on any property in
parishes other than Ascension, Calcasieu, East Baton Rouge,
Iberville, Livingston, Pointe Coupee, and West Baton Rouge
that when uncontrolled have a potential to emit a combined
weight of VOCs less than 100 pounds (45 kilograms) in any
consecutive 24-hour period are exempt from the provisions
of Subsection C of this Section.

       7.  Soldering and surface coating facilities or portions thereof, may request from the administrative authority* exemption from the requirements of LAC 33:III.2123.C if all of the following conditions are met:

AQ236   §2123.D.7.a;LAd34;LA021.10;AQ236;LR30:0746(4/20/2004)
         a. the affected portion of the facility will not emit
25 tons per year (TPY) or more of VOC if the facility is
located in the parish of Ascension, East Baton Rouge,
Iberville, Livingston, or West Baton Rouge, or 50 TPY or
more of VOC if located in any other parish;

           b.  that the only practical means of VOC control is thermal oxidization;

           c.  that the substance to be emitted is not toxic;

           d.  that the moles of fuel used would exceed the moles of VOC destroyed;

           e.  that the reasonable control of the VOC would result in a net increase of emissions from the facility.

   The exemption will be described in detail in the Compliance Orders, under Section 110a.(3) of the Federal Clean Air Act, adopted by the administrative authority*.

       8.  Compliance with an emission limit specified under Subsection C of this Section may be demonstrated, in terms of pounds per gallon solids as applied, based upon the daily weighted average of a coating type within a single coating line. The equivalent emission limit in terms of pounds per gallon solids as applied (Es) shall be determined using the following calculation:

           Ds = 7.36 pounds volatile organic compound per gallon volatile organic compound (i.e., density of reference solvent);

           Ec = Emission limit found in Subsection C. of this Section, in terms of pounds per gallon of coating (less water and exempt solvents);

           Es = Emission limit equivalent to Ec, but in terms of pounds per gallon solids as applied;

           Vs = Gallon solids per gallon coating (less water and exempt solvents).

           Vs = (1 - Ec/Ds)
           Es = Ec/Vs

       9.  If improved transfer efficiency application equipment is used to comply with the emission limitations in terms of pounds per gallon solids deposited, the improved transfer efficiency equipment shall be tested following procedures approved in advance by the administrative authority* and consistent with those transfer efficiency testing procedures specified in Paragraph E.5 of this Section.  The applicable emission limit shall be calculated using the transfer efficiency baseline established by the administrative authority* and compliance shall be determined following a calculation procedure also approved by the administrative authority*.

   E. Testing.  Compliance with LAC 33:III.2123.A, C and D shall be determined by applying the following test methods, as appropriate:

AQ145   §2123.E.1 to E.4;LAd34;LA021.02;AQ145;LR22:1212p10(12/20/1996)
      1. Test Methods 24 (40 CFR part 60, appendix A, as incorporated 
by reference at LAC 33:III.3003) with one-hour bake;
      2. Test Methods 1-4 (40 CFR part 60, appendix A, as incorporated 
by reference at LAC 33:III.3003) for determining flow rates;
      3. Test Method 18 (40 CFR part 60, appendix A, as incorporated 
by reference at LAC 33:III:3003) for measuring gaseous organic compound 
emissions by gas chromatographic analysis;
      4. Test Method 25 (40 CFR part 60, appendix A, as incorporated 
by reference at LAC III.3003) for determining total gaseous nonmethane 
organic emissions as carbon;

       5.  Protocol for Determining the Daily Volatile Organic Compound Emission Rate of Automobile and Light-Duty Truck Topcoat Operations (Document No. EPA-450/3-88-018 dated December, 1988) for determining transfer efficiency, oven loading and incinerator destruction efficiency;

AQ171*   §2123.E.6;LAd34;LA021.05;AQ171*;LR 24:1285(7/20/1998)
      6. Performance test procedures described in 40 CFR
60.444, as incorporated by reference in LAC 33:III.Chapter 30;

       7.  additional performance test procedures, or equivalent test methods, approved by the administrative authority*.

   F.  Recordkeeping.  The owner/operator of any surface coating facility shall maintain records at the facility to verify compliance with or exemption from LAC 33:III.2123.  The records shall be maintained for at least two years and will include, but not be limited to, the following:

       1.  records of any testing done in accordance with LAC 33:III.2123.E.

       2.  the owner/operator of any facility subject to LAC 33:III.2123 shall install and maintain monitors to accurately measure and record operational parameters of all required control devices as necessary to ensure the proper functioning of those devices in accordance with the design specifications, including but not limited to:

           a.  the exhaust gas temperature of direct-flame incinerators and/or the gas temperature immediately upstream and downstream of any catalyst bed;

           b.  the total amount of volatile organic compounds recovered by carbon adsorption or other solvent recovery systems during a calendar month;

           c.  the dates and reasons for any malfunction of a required control device and the estimated quantity and duration of volatile organic compound emissions during the upset period; and

           d.  the exhaust gas VOC concentration of a carbon adsorption system to determine breakthrough.

       3.  material data sheets which document the volatile organic compound content, composition, solids content, solvent density, and other relevant information regarding each coating and/or solvent used.

       4.  records used for determining the daily volatile organic compound emission rate of automobile and light-duty truck topcoat operations as specified in Document No. EPA-450/3- 88-018 dated December, 1988.

AQ149   §2123.G.all definitions;LAd34;LA021.05;AQ149;LR24:0024(1/20/1998)
   G. Definitions

         Air Dried Coating-- any coating that is cured at a
temperature below 90°C (194°F).

         Baked Coating-- any coating that is cured at a temperature
at or above 90°C (194°F).

         Extreme High Gloss Coating -- any coating that achieves
at least 95 percent reflectance on a 60° meter when tested by
ASTM Method D-523.

         Heat Resistant Coating-- any coating that during normal
use must withstand temperatures of at least 204°C(400°F).

         High Gloss Coating-- any coating that achieves at least 85
percent reflectance on a 60° meter when tested by ASTM Method D-523.

         High Temperature Coating-- any coating that must
withstand temperatures of at least 26°C (800°F).

         Marine Coating-- any coating, except unsaturated
polyester resin (fiberglass) coatings, containing volatile
organic materials and applied by brush, spray, roller, or other
means to ships, boats and their appurtenances, and to buoys
and oil drilling rigs intended for the marine environment.

         Metallic Heat Resistant Coating -- any coating which
contains more than five grams of metal particles per liter as
applied and which must withstand temperatures over 80°C (175°F).

         Repair and Maintenance Thermoplastic Coating -- a resin-
bearing coating in which the resin becomes pliable with the
application of heat, such as vinyl, chlorinated rubber, or
bituminous coatings.

AQ236   §2123.H;LAd34;LA021.10;AQ236;LR30:0746(4/20/2004)
   H. Timing. A facility that has become subject to this
regulation as a result of a revision of the regulation shall
comply with the requirements of this Section as soon as
practicable, but in no event later than one year from the
promulgation of the regulation revision.