SCAQMD RULE 1124 AEROSPACE AS. AND COMP. MANUF. OPERATIONS 
LAST REVISED 01/13/95

 (Adopted July 6, 1979)(Amended May 7, 1982)
 (Amended Jan. 6, 1984)
 (Amended June 1, 1984)(Amended Jan. 9, 1987)
 (Amended Feb. 6, 1987)
 (Amended April 3, 1987)(Amended May 5, 1989)
 (Amended March 2, 1990)
 (Amended April 6, 1990)(Amended June 1, 1990)
 (Amended Nov. 2, 1990)
 (Amended Dec. 7, 1990)(Amended August 2, 1991)
 (Amended March 6, 1992)
 (Amended Dec. 4, 1992)(Amended Dec. 10, 1993)
 (Amended Jan. 13, 1995)
 
RULE 1124.     AEROSPACE ASSEMBLY AND COMPONENT MANUFACTURING
                OPERATIONS
                
 (a)     Purpose and Applicability
      The purpose of Rule 1124 is to reduce volatile organic
      compounds (VOC) emissions from aircraft and spacecraft
      coating, assembly and cleaning operations.  The affected
      industries include commercial and military aircraft,
      satellite, space shuttle and rocket manufacturers and
      their subcontractors.  The rule also applies to maskant
      applicators, aircraft refinishers, and aircraft fastener
      manufacturers.
      
 (b)     Definitions
    For the purpose of this rule, the following definitions
    shall apply:
        (1)  ADHESION PROMOTER is a coating applied to a
           substrate in a monomolecular thickness to promote
           wetting and form a chemical bond with the
           subsequently applied material.
        (2)  ADHESIVE is any substance that is used to bond one
           surface to another surface by attachment.
        (3) ADHESIVES BONDING PRIMER is a coating applied in a
           very thin film to aerospace adhesive bond detail
           components for corrosion inhibition and adhesion.
        (4) AEROSOL COATING PRODUCT is a pressurized coating
          product containing pigments or resins that is
          dispensed by means of a propellant, and is packaged
        in a disposable can for hand-held application.
        (5) AEROSPACE COMPONENT is the raw material, partial or
        completed fabricated part, assembly of parts, or
        completed unit of any aircraft or space vehicle and
        includes integral equipment such as models, mock-
        ups, prototypes, molds, jigs, tooling, hardware
        jackets, and test coupons.
        (6) AIRCRAFT is any machine designed to travel through
        the air, without leaving the earth's atmosphere,
        whether heavier or lighter than air, including
        airplanes, balloons, dirigibles, helicopters, and
        missiles.
        (7) ANTICHAFE COATING is a coating applied to areas of
        moving aerospace components which may rub during
        normal operation.
        (8) ANTI-WICKING WIRE COATING is the outer coating of a
        wire which prevents fluid wicking into insulation
        of the wire.
        (9) BARRIER COATING is a coating applied in a thin film
        to fasteners to inhibit dissimilar metal corrosion
        and to prevent galling.
        (10)      CHEMICAL MILLING is the removal of metal by
        chemical action of acids or alkalis.
        (11)      CLEAR TOPCOAT is a topcoat that contains no visible
        pigments and is uniformly transparent when applied.
        (12)      COATING APPLICATION EQUIPMENT is equipment used for
        applying coating to a substrate.  Coating
        application equipment includes coating distribution
        lines, coating hoses, pressure-pots, spray guns,
        and hand-application equipment, such as hand-
        rollers, brushes, daubers, spatulas, and trowels.
        (13)      CONFORMAL COATING is a coating applied to
        electrical conductors and circuit boards to protect
        them against electrical discharge damage and/or
        corrosion.
        (14)      DRY LUBRICATIVE MATERIALS are coatings consisting
        of lauric acid, cetyl alcohol, waxes or other non-
        cross linked or resin bound materials which act as
        a dry lubricant or protective coat.
        (15)      ELECTRIC- or RADIATION-EFFECT COATINGS include
        electrically conductive coatings and radiation
        effect coatings, the uses of which may include
        prevention of radar detection.
        (16)      ELECTRONIC WIRE COATING is the outer electrical
        insulation coating applied to tape insulation of a
        wire specifically formulated to smooth and fill
        edges.
        (17)      EXEMPT COMPOUNDS are any of the following
        compounds: 
                (A)    Group I 
               trifluoromethane (HFC-23)
               chlorodifluoromethane (HCFC-22)
               dichlorotrifluoroethane (HCFC-123)
               2-chloro-1,1,1,2-tetrafluoroethane (HCFC-
                124)
               pentafluoroethane (HFC-125) 
               1,1,2,2-tetrafluoroethane (HFC-134)
                tetrafluoroethane (HFC-134a)
                dichlorofluoroethane (HCFC-141b)
                chlorodifluoroethane (HCFC-142b)
                1,1,1-trifluoroethane (HFC-143a)
                1,1-difluoroethane (HFC-152a) 
                cyclic, branched, or linear, completely
                fluorinated alkanes
                cyclic, branched, or linear, completely
                   fluorinated ethers with no unsaturations
                cyclic, branched, or linear, completely
                   fluorinated tertiary amines with no
                   unsaturations
                sulfur-containing perfluorocarbons with no
                   unsaturations and with sulfur bonds only to
                   carbon and fluorine
                         (B)  Group II 
                methylene chloride 
                1,1,1-trichloroethane (methyl chloroform)
                trichlorotrifluoroethane (CFC-113)
                dichlorodifluoromethane (CFC-12)
                trichlorofluoromethane (CFC-11)
                dichlorotetrafluoroethane (CFC-114)
                chloropentafluoroethane (CFC-115)
                    The use of Group II compounds and/or carbon
           tetrachloride may be restricted in the future
           because they are toxic, potentially toxic, upper-
           atmosphere ozone depleters, or cause other
           environmental impacts.  By January 1, 1996,
           production of chlorofluorocarbons (CFC), 1,1,1,-
           trichloroethane (methyl chloroform), and carbon
           tetrachloride will be phased out in accordance with
           the Code of Federal Regulation Title 40, Part 82
           (December 10, 1993). 
           (18)     FACILITY is all the buildings, equipment and
           materials on one contiguous piece of property.
          (19) FASTENER MANUFACTURER is a facility that coats
           aircraft fasteners, such as pins, collars, bolts,
           nuts, and rivets, with solid film lubricants for
           distribution to other facilities.
          (20) FIRE-RESISTANT COATING is a cabin interior coating
           that meets for civilian aircraft the Federal
           Aviation Administration-required Ohio State
           University Heat Release, Fire and Burn Tests; for
           military aircraft, Aircraft Structure Integrity
           Program in MIL-STD-1530A and 
           MIL-A-87221 (Northrop's MS-445-3.3.2.1 and MS-445-
           3.3.2.2).
          (21) FLIGHT-TEST COATING is a coating applied to an
           aircraft prior to flight testing to protect the
           aircraft from corrosion and to provide required
           marking during flight test evaluation.
          (22) FUEL TANK ADHESIVE is an adhesive used to bond
           components exposed to fuel and must be compatible
           with fuel tank coatings.
          (23) FUEL-TANK COATING is a coating applied to a fuel
           tank of an aircraft to protect it from corrosion
           and/or bacterial growth.
          (24) GRAMS OF VOC PER LITER OF COATING, LESS WATER AND
           LESS EXEMPT COMPOUNDS is the weight of VOC per
           combined volume of VOC and coating solids and can
           be calculated by the following equation:
           
 Grams of VOC per Liter of Coating, Less 
 Water and Less Exempt Compounds  =     Ws  -  Ww  -  Wes
                                        -----------------
                                        Vm  -  Vw  -  Ves
                              
        Where:      Ws   =    weight of volatile compounds in
                              grams
                     Ww  =    weight of water in grams
                     Wes =    weight of exempt compounds in
                              grams
                     Vm  =    volume of material in liters
                     Vw  =    volume of water in liters
                     Ves =    volume of exempt compounds in
                              liters
                     
 For coatings that contain reactive diluents the
           grams of VOC per Liter of Coating Less Water and
           Less Exempt Compounds shall be calculated by the
           following equation:
           
 Grams of VOC per Liter of Coating, Less
 Water and Less Exempt Compounds =     Ws  -  Ww  -  Wes
                                       ------------------
                                       Vm  -  Vw  -  Ves
Where:    Ws   =    weight of volatile compounds
                        evolved during curing and
                        analysis, in grams
        Ww   =    weight of water evolved during
                        curing and analysis, in grams
        Wes  =    weight of exempt compounds
                        evolved during curing and
                        analysis, in grams
        Vm   =    volume of the material prior to
                        reaction, in liters
        Vw   =    volume of water evolved during
                        curing and analysis, in liters
        Ves  =    volume of exempt compounds
                               evolved during curing and
                               analysis, in liters
                               
    (25)  GRAMS OF VOC PER LITER OF MATERIAL is the weight of VOC
    per volume of material and can be calculated by the
    following equation:
 
 Grams of VOC per Liter of Material =   Ws - Ww - Wes
                                        -------------     
                                             Vm
                                             
  Where:    Ws   =    weight of volatile compounds in
                        grams
            Ww  =    weight of water in grams
            Wes =    weight of exempt compounds in
                              grams
            Vm  =    volume of material in liters
                     
        (26) HAND APPLICATION METHOD is the application of
           coatings, sealants or adhesives by manually held,
           non-mechanically operated equipment.  Such
           equipment includes paint brushes, hand rollers,
           caulking guns, trowels, spatulas, syringe daubers,
           rags, and sponges.
          (27) HIGH-TEMPERATURE COATING is a coating that must
           withstand temperatures of more than 350oF.
          (28) HIGH-VOLUME, LOW-PRESSURE (HVLP) SPRAY is a coating
           application system which is operated at air
           pressure of between 0.1 and 10 pounds per square
           inch gauge (psig).
          (29) IMPACT-RESISTANT COATING is a flexible coating that
           protects aerospace components, such as aircraft
           landing gear, and landing gear compartments, and
           other surfaces subject to impact from abrasion from
           runway debris.
          (30) LINE-SEALER MASKANT is a maskant used to cover
           scribe lines in maskant in order to protect against
           etchant in multi-step etching processing.
          (31) LOW-SOLIDS ADHESIVE COATING OR SEALANT is an
           adhesive coating or sealant which has less than one
           pound of solids per gallon of material.  Such
           solids are the non-volatiles remaining after a
           sample is heated at 110oC for one hour.
          (32) MASKANT FOR CHEMICAL MILLING is a coating applied
           directly to an aerospace component to protect
           surface areas when chemical milling the component.
          (33) MASKANT FOR CHEMICAL PROCESSING is a coating
           applied directly to an aerospace component to
           protect surface areas when anodizing, aging,
           bonding, plating, etching, and/or performing other
           chemical surface operations on the component.
          (34) METALLIZED EPOXY COATING is a coating that contains
           relatively large quantities of flake pigmentation
           for appearance and/or added protection.
          (35) NON-STRUCTURAL ADHESIVE is an adhesive that bonds
           non-load-carrying aircraft components in non-
           critical applications.
          (36) OPTICAL ANTI-REFLECTION COATING is a coating with a
           low reflectance in the infrared and visible
           wavelength range and is used for anti-reflection on
           or near optical and laser hardware.
          (37) PHOTOLITHOGRAPHIC MASKANT is a coating applied by
           photoresist operation(s) directly to an printed
           circuit boards, and ceramic and similar substrates
           to protect surface areas from chemical milling or
           chemical processing.
          (38) PHOTORESIST OPERATION is a process for the
           application or development of photoresist masking
           solution on a substrate, including preparation,
           soft bake, develop, hard bake, and stripping, and
           can be generally subdivided as follows:
              (A)  Negative Photoresist Operation is a process
                where the maskant hardens when exposed to
                light and the unhardened maskant is stripped,
                exposing the substrate surface for chemical
                milling or chemical processing.
              (B)  Positive Photoresist Operation is a process
                where the maskant softens when exposed to
                light and the softened maskant is stripped,
                exposing the substrate surface for chemical
                milling or chemical processing.
          (39) PRETREATMENT COATING is a coating which contains no
           more than 12 percent solids, by weight, to provide
           surface etching and is applied directly to metal
           surfaces to provide corrosion resistance, adhesion,
           and ease of stripping.
          (40) PRIMER is a coating applied directly to an
           aerospace component for purposes of corrosion
           prevention, protection from the environment,
           functional fluid resistance and/or adhesion of
           subsequent coatings.
          (41) PRIMER COMPATIBLE WITH RAIN EROSION RESISTANT
           COATING is a primer to which rain erosion resistant
           topcoat is applied.
          (42) RAIN EROSION-RESISTANT COATING is a coating that
           protects leading edges, flaps, stabilizers, and
           engine inlet lips against erosion caused by rain
           impact during flight.
          (43) REPAIR COATING is a coating used to recoat portions
           of a product which has sustained mechanical damage
           to the coating following normal painting
           operations.
          (44) REPAIR MASKANT is a maskant used to cover
           imperfections in the maskant coat.
          (45) REWORK is the inspection, repair, and
           reconditioning of aerospace components subject to
           this rule.
          (46) SCALE INHIBITOR is a coating that is applied to the
           surface of a part prior to thermal processing to
           inhibit the formation of tenacious scale.
          (47) SEALANTS are viscous semisolid materials that fill
           voids in order to seal out water, fuel, and other
           liquids and solids, and in some cases, air
           movement.
          (48) SOLID-FILM LUBRICANT is a very thin coating
           consisting of a binder system containing as its
           chief pigment material one or more of the
           following:  molybdenum disulfide, graphite,
           polytetrafluoroethylene (PTFE), or other solids
           that act as a dry lubricant between faying
           surfaces.
          (49) SPACE-VEHICLE COATING is a coating applied to
           vehicles designed to travel beyond the earth's
           atmosphere.
          (50) STRIPPER is a volatile liquid applied to remove
           temporary protective coating, maskant for chemical
           processing, cured paint, and cured paint residue.
          (51) STRUCTURAL ADHESIVE - AUTOCLAVABLE is an adhesive
           used to bond load-carrying aircraft components and
           is cured by heat and pressure in an autoclave.
          (52) STRUCTURAL ADHESIVE - NON-AUTOCLAVABLE is an
           adhesive cured under ambient conditions and is used
           to bond load-carrying aircraft components or other
           critical functions, such as nonstructural bonding
           in the proximity of engines.
          (53) TEMPORARY MARKING COATING is an ink or a coating
           used to make identifying markings, and is removed
           prior to delivery of the aerospace component and/or
           assembly.
          (54) TEMPORARY PROTECTIVE COATING is a coating applied
           to an aerospace component to protect it from
           mechanical and environmental damage during
           manufacturing.
          (55) TOPCOAT is a coating applied over a primer for
           purposes such as appearance, identification, or
           protection.
          (56) TOUCH-UP COATING is a coating used to cover minor
           coating imperfections appearing after the main
           coating operation.
          (57) TRANSFER EFFICIENCY is the ratio of the weight or
           volume of coating solids adhering to an object to
           the total weight or volume, respectively, of
           coating solids used in the application process,
           expressed as a percentage.
          (58) UNICOAT is a coating which is applied directly to
           an aerospace component for purposes of corrosion
           protection, environmental protection, and
           functional fluid resistance that is not
           subsequently topcoated.
     (59)      VOC COMPOSITE PARTIAL PRESSURE is the sum of
           the partial pressures of the compounds defined as
           VOCs.
               VOC Composite Partial Pressure is calculated as
           follows:
          
                           Wi
                               x  VPi
                n        MWi
          PPc = S                                                     
               
               i=1  Ww     We      n  Wi
                          +          +   S             
                    MWw    MW     i=1 MWi    
                                                       
     Where:
                    Wi   =    Weight of the "i"th VOC compound, in
                         grams
                    Ww   =    Weight of water, in grams
                    We   =    Weight of exempt compound, in grams
                                   MWi  =    Molecular weight of the "i"th VOC
                       compound, in grams per gram-mole
                                   MWw  =    Molecular weight of water, in grams per
                                        gram-mole
                                    MWe =    Molecular weight of exempt compound, in
                       grams per gram-mole
                              PPc  =    VOC composite partial pressure at 20oC,
                         in mm Hg
          VPi  =    Vapor pressure of the "i"th VOC compound
                       at 20oC, 
                       in mm Hg
                    
          (60) VOLATILE ORGANIC COMPOUND (VOC) is any volatile
           compound containing the element carbon, excluding
           methane, carbon monoxide, carbon dioxide, carbonic
           acid, metallic carbides or carbonates, ammonium
           carbonate, and exempt compounds.
          (61) WING COATING is a corrosion-resistant coating that
           is resilient enough to withstand the flexing of the
           wings.
          (62) WIRE INK is the surface identification stripe and
           mark on aerospace wire or cable which serves as an
           electrical insulator in the presence of high
           humidity.
          (63) WIRE PREBONDING ETCHANT is a non-additive surface
           treatment process to provide bondability of
           aerospace wire coatings to the underlying
           insulation layer.
           
 (c)     Requirements
    (1)  VOC Content of Coatings
(A)  A person shall not apply to aerospace
                components any coatings, including any VOC-
                containing materials added to the original
                coating supplied by the manufacturer, which
                contain VOC in excess of the limits specified
                below:
                                                 VOC LIMIT
                                 Grams Per Liter of Coating
                                 Less Water and Less Exempt
                                 Compounds
                                                COATING     1/1/94    1/1/96    1/1/97
           Primer            350   350   350
           Topcoat           420   420   420
           Pretreatment Coating    780   780   780
           Adhesion Promoter       850   850   850
                       Adhesive Bonding Primer
              Cured at 250oF or below       850  850  250
              Cured above 250oF      1030  1030  250
                       Flight-Test Coating
              Used on Missiles or 
                  Single Use Target Craft        420  420  420
              All Other         840   840   840
                                               VOC LIMIT  (Cont.)
                                 Grams Per Liter of Coating
                                 Less Water and Less Exempt
                                 Compounds
                                                COATING     1/1/94    1/1/96    1/1/97
           Fuel-Tank Coating       720   420   420
           Fuel-Tank Adhesive      620   620   620
           Electric- or Radiation-Effect Coating    800  800  800
           Touch-up, Line-Sealer Maskants      750  750  750
           Photolithographic Maskant     850   850  850
           Temporary Protective Coating        250  250  250
                       Space-Vehicle Coatings
              Electrostatic Discharge 
                  Protection Coating        800  800  800
              Other Space-Vehicle Coatings      1000 1000 1000
              Adhesives         800   800   800
              Wing Coating         750   750   750
           Impact-Resistant Coating      420   420  420
           High-Temperature Coating      850   850  850
           Antichafe Coating       600   600   600
           Rain Erosion-Resistant Coating      800  800  800
                       Fire-Resistant Coating
              Civilian    650   650   650
              Military    970   970   970
              Conformal Coating    750   750   750
           Sealant           600   600   600
                       Adhesives
              Non-Structural    250   250   250
              Structural
                  Autoclavable         50    50   50
                  Non-Autoclavable    850   850  850
              Optical Anti-Reflective Coating       700  700  700
                       Wire Coatings
              Electronic Wire Coating      725   420  420
              Anti-Wicking     825    420   420
              Pre-Bonding Etchant    900    420  420
              Phosphate Ester Resistant Ink      925  925  925
              Metallized Epoxy Coating         700  700  700
           Clear Topcoat     520   520   520
           Scale Inhibitor         880   880   880
                       Primer Compatible with
              Rain Erosion-Resistant Coating     850  850  850
           (B) A person shall not apply to aerospace
                assemblies and/or components any Unicoat,
                including any VOC-containing materials added
                to the original coating supplied by the
                manufacturer, which contain VOC in excess of
                420 grams of VOC per liter of coating, less
                water and less exempt compounds.  Documents
                shall be provided to the Executive Officer or
                his designee demonstrating that the unicoat is
                being used in lieu of the application of a
                primer and topcoat, and the applicant must
                receive written approval for the use of the
                unicoat specifying the conditions of
                application from the Executive Officer or his
                designee.
                (C)     Maskant Requirements
          (i)  A person shall not apply maskant for
                     chemical processing to aerospace
                     components unless the emissions are
                     collected and reduced pursuant to
                     subparagraph (c)(5), or the maskant
                     contains less than 250 grams of VOC per
                     liter of coating, less water and less
                     exempt compounds, and less
                     perchloroethylene (PERC).
                    (ii) A person shall not apply maskant for
                     chemical milling to aerospace components
                     unless the emissions are collected and
                     reduced pursuant to subparagraph (c)(5),
                     or the maskant contains less than 250
                     grams of VOC per liter of coating, less
                     water and less exempt compounds.
                    (D)  Fastener Installation:
                After January 1, 1992, a person shall not use
                any coatings, including any VOC-containing
                materials added to the original coating
                supplied by the manufacturer, to install any
                fastener into any aerospace component or
                assembly, which contain VOC in excess of the
                limits specified below:
                                                    VOC LIMIT
                                    Grams Per Liter of Coating,
                                    COATING  Less Water and Less Exempt Compounds
                      
 Solid-Film Lubricant      880
                    Fastener Sealant 675
                    
 (E)     Fastener-Lubricative Coatings:
           A person shall not apply to aerospace fastener
                any coatings, including any VOC-containing
                materials added to the original coating
                supplied by the manufacturer, which contain
                VOC in excess of the limits specified below:
                                                 VOC LIMIT
                                 Grams Per Liter of Coating,
                                 Less Water and Less Exempt
                                 Compounds
                                 
                                                         COATING      1/1/94    1/1/96    1/1/97
                     
                     Solid-Film Lubricant         880  880  250
              Dry Lubricative Materials      250  250  250
              Barrier Coating         790    420  420
              
           (F)     Non-Fastener Lubricative Coatings:
           A person shall not apply to any non-fastener
                aerospace components any coating, including
                any VOC-containing materials added to the
                original coating supplied by the manufacturer,
                which contain VOC in excess of the limits
                specified below:
                                                    VOC LIMIT
                                    Grams Per Liter of Coating,
                                    COATING  Less Water and Less Exempt Compounds
                     
                                         Solid-Film Lubricant 880
                    Dry Lubricative Materials                 675
                    
(G)  For low-solids adhesive coatings or sealants,
                the appropriate limits in subparagraph
                (c)(1)(A) shall be expressed in grams of VOC
                per liter of material.
                (2)     Solvent Use, Clean Up, and Stripping
     (A)  A person shall not use VOC-containing
                materials for cleaning or clean up, excluding
                coating stripping and equipment cleaning
                unless:
               (i)  the VOC composite partial pressure is 45
                     mm Hg or less at a temperature of 20oC
                     (68oF); or
                    (ii) the material contains 200 grams or less
                     of VOC per liter of material.
                    (B)  A person shall not use stripper on aerospace
                components unless:
               (i)  it contains less than 300 grams of VOC
                     per liter of material; or
                    (ii) the VOC composite partial pressure is 9.5
                     mm Hg (0.18 psia) or less at 20oC (68oF).
                         (C)  A person shall not atomize any solvent into
 open air.
     (3)  Solvent Cleaning Operations; Storage and Disposal
           of VOC-Containing Materials 
           Cleaning of coating application equipment and
           storage of solvent laden cloth and paper shall
           comply with provisions of Rule 1171.  
           (4)     Transfer Efficiency 
      Effective January 1, 1992, a person or facility
           shall not apply coatings unless the coating is
           applied with properly operating equipment or
           controlled, according to operating procedure
           specified by the equipment manufacturer or the
           Executive Officer or his designee, and by the use
           of one of the following methods:
          (A)  electrostatic application; or
               (B)  flow coater; or
               (C)  roll coater; or
               (D)  dip coater; or
               (E)  high-volume, low-pressure (HVLP) spray; or
               (F)  hand application methods; or
               (G)  such other alternative application methods as
                are demonstrated to the Executive Officer,
                using District-approved procedures, to be
                capable of achieving at least equivalent
                transfer efficiency to method (c)(4)(E) and
                for which written approval of the Executive
                Officer has been obtained; or
               (H)  Approved air pollution control equipment under
                subparagraph (c)(5).
                (5)     Control Equipment
      Owners and/or operators may comply with provisions
           of subparagraph (c)(1), (c)(2), and (c)(4) by using
           approved air pollution control equipment provided
           that the VOC emissions from such operations and/or
           materials are reduced in accordance with provisions
           of (A) and (B). 
          (A)  The control device shall reduce emissions from
                an emission collection system by at least 95
                percent, by weight, or the output of the air
                pollution control device is less than 50 PPM
                calculated as carbon with no dilution.
               (B)  The owner/operator demonstrates that the
                system collects at least 90 percent, by
                weight, of the emissions generated by the
                sources of emissions.
                
 (d) Recordkeeping Requirements
 Records shall be maintained pursuant to the requirements
      of Rule 109.
      
 (e) Determination of VOC Content
 The VOC content shall be determined (less water and
      exempt solvents) for adhesives, coatings, and sealants
      using:
     (1)  EPA Reference Method 24 (Determination of Volatile
           Matter Content, Water Content, Density Volume
           Solids, and Weight Solids of Surface Coatings, Code
           of Federal Regulations Title 40, Part 60, Appendix
           A).  Analysis done according to EPA Method 24 shall
           utilize Procedure B of ASTM Method D-2369,
           referenced in EPA Method 24.  The exempt solvent
           content shall be determined using SCAQMD Test
           Methods 302 and 303 (SCAQMD "Laboratory Methods of
           Analysis for Enforcement Samples" manual) or;
          (2)  SCAQMD Test Methods 302, 303, and 304 (SCAQMD
           "Laboratory Methods of Analysis for Enforcement
           Samples" manual).
           The following classes of compounds:  cyclic, branched,
      or linear, completely fluorinated alkanes; cyclic,
      branched, or linear, completely fluorinated ethers with
      no unsaturations; cyclic, branched, or linear,
      completely fluorinated tertiary amines with no
      unsaturations; and sulfur-containing perfluorocarbons
      with no unsaturations and with sulfur bonds only to
      carbon and fluorine, will be analyzed as exempt
      compounds for compliance with paragraph (c), only at
      such time as manufacturers specify which individual
      compounds are used in the coating formulations and
      identify the test methods, which, prior to such
      analysis, have been approved by the USEPA and the
      SCAQMD, that can be used to quantify the amounts of each
      exempt compound.
      
 (f) Test Methods
(1)  Efficiency of the control device shall be
           determined according to EPA Method 25, 25A, or
           SCAQMD Test Method 25.1.  Emissions determined to
           exceed any limits established by this rule through
           the use of either of the above-referenced test
           methods shall constitute a violation of this rule.
          (2)  The capture efficiency of the emissions collection
           system shall be determined by the USEPA method
           cited in 55 FR (Federal Register) 26865, June 29,
           1990 or any other method approved by the USEPA, the
           California Air Resources Board, and the SCAQMD.
          (3)  The transfer efficiency of alternative coating
           application methods shall be determined in
           accordance with the SCAQMD method "Spray Equipment
           Transfer Efficiency Test Procedure for Equipment
           User, May 24, 1989".
          (4)  The identity and quantity of components in solvents
           shall be determined in accordance with SCAQMD test
           method 308 (Quantitation of Compounds by Gas
           Chromatography) contained in the SCAQMD "Laboratory
           Methods of Analysis for Enforcement Samples"
           manual.  The VOC composite partial pressure is
           calculated using the equation in paragraph (b)(59).
          (5)  Multiple Test Methods
               When more than one test method or set of test
           methods are specified for any testing, a violation
           of any requirement of this rule established by any
           one of the specified test methods or set of test
           methods shall constitute a violation of the rule.
          (6)  All test methods referenced in this section shall
           be the most recently approved version.
           (g) Rule 442 Applicability
(1)  Any coating, coating operation, or facility which
           is exempt from all or a portion of this rule, shall
           comply with the provisions of Rule 442.
          (2)  Any adhesive, adhesive application operation, or
           facility which is exempt from all or a portion of
           this rule, shall comply with the provisions of Rule
           442.
           
 (h) Prohibition of Solicitation of Violations
(1)  A person shall not solicit or require any other
           person to use, in the District, any coating or
           combination of coatings to be applied to any
           aircraft component subject to the provisions of
           this rule that does not meet the limits and
           requirements of this rule, or of an Alternative
           Emission Control Plan (AECP) approved pursuant to
           the provisions of paragraph (i).
          (2)  The requirements of this paragraph shall apply to
           all written or oral agreements executed or entered
           into after April 3, 1987.
           
 (i) Alternative Emission Control Plans
 An owner/operator may comply with the provisions of
      subparagraph (c)(1) by means of an Alternative Emission
      Control Plan pursuant to Rule 108.
      
 (j) Reporting Requirements
 Persons who perform qualification acceptance testing on
      coatings with a future compliance date for use in the
      District shall, beginning July 1, 1994 and at 
      6-month intervals thereafter, submit a status report
      describing the progress toward the development of
      coatings which satisfy future compliance dates.  These
      reports shall contain, at a minimum:
     (1)  Manufacturer, product number, VOC content, and
           applicable coating category for each of the test
           candidates;
          (2)  Test expenditures for the period;
          (3)  Progress on candidates tested during this period.
          (4)  Approvals received for coatings which comply with
           future compliance dates.
          (5)  Volume of coatings used in each coating category
           for which there is a future compliance date.
           Facilities testing coatings in the same coating category
      may submit joint status reports.  Once compliance with
      future compliance dates is achieved and a status report
      is submitted documenting such, no further status reports
      need be submitted.
      
 (k) Exemptions
(1)  The provisions of paragraph (c)(1) of this rule
           shall not apply to coatings with separate
           formulations that are used in volumes of less than
           20 gallons per year provided that the total by a
           facility is less than 200 gallons of such
           formulations applied annually.
          (2)  The provisions of subdivision (c) of this rule
           shall not apply to a facility which uses a total of
           less than three gallons of VOC-containing coatings
           and solvents from aerospace assembly and component
           coating operations on each and every day of
           operation.
          (3)  The provisions of paragraphs (c)(1) and (c)(4) of
           this rule shall not apply to incidental corrosion
           maintenance repair coating operations at military
           facilities, provided that the coating use at any
           maintenance repair location within the facility
           does not exceed 1.5 gallons per day, and the total
           coating usage for such operations at the facility
           does not exceed five gallons per day.
          (4)  The provisions of subparagraphs (c)(2)(A) shall not
           apply to space vehicle manufacturing.
          (5)  The provisions of paragraph (c)(1) shall not apply
           to clear or translucent coatings applied on clear
           or transparent substrates.
          (6)  The provisions of paragraph (c)(4) shall not apply
           to touch-up and stencil coatings.
          (7)  The provisions of paragraph (c)(1) shall not apply
           to the recoating of assembled aircraft at rework
           facilities if original coating formulations are
           used.
          (8)  The provisions of paragraph (c)(1) shall not apply
           to adhesives with separate formulations that are
           used in volumes of less than ten gallons per year.
          (9)  The provisions of paragraph (c)(4) shall not be
           applied to the application of materials marking
           coatings.
          (10) The provisions of subdivision (c) shall not apply
           to laboratories which apply coatings to test
           specimens for purposes of research, development,
           quality control, and testing for production-related
           operations.
          (11) The provisions of subdivision (c) shall not apply
           to the application of temporary marking coatings.
          (12) The provisions of paragraph (c)(2) of this rule do
           not apply to the surface cleaning of solar cells,
           fluid systems, avionic equipment, and laser optics.
          (13) The provisions of subdivision (d) shall not be
           applied to the application of materials that
           contain less than 20 g/L of VOC per liter of
           material.
          (14) The provisions of paragraph (c)(4) shall not apply
           to the use of materials dispensed from airbrush
           operations.
          (15) The provisions of this rule shall not apply to
           aerosol coating products.