MBUAPCD RULE 434 COATING OF METAL PARTS AND PRODUCTS                                    
LAST REVISED 06/15/94
                                    
                                    REGULATION IV
                                     PROHIBITIONS



          RULE 434  COATING OF METAL PARTS AND PRODUCTS



          Adopted 6-15-94

                                      CONTENTS


          PART 1  GENERAL...............................................2
            
            1.1   Purpose...............................................2
                  
            1.2   Applicability.........................................2
                  
            1.3   Exemptions............................................2
                  
            1.4   Effective Dates.......................................3
                  
            1.5   References............................................3
                  

          PART 2  DEFINITIONS...........................................3
            
            2.1   Adhesive..............................................3
                  
            2.2   Aircraft or Aerospace Vehicle Coating.................3
                  
            2.3   Air-dried Coating.....................................3
                  
            2.4   Baked Coating.........................................4
                  
            2.5   Camouflage Coating....................................4
                  
            2.6   Coating...............................................4
                  
            2.7   Combined Efficiency...................................4
                  
            2.8   Emissions Control Device..............................4
                  
            2.9   Etching Filler........................................4
                  
            2.10  Exempt Compounds......................................4
                  
            2.11  Extreme-performance Coating...........................6
                  
            2.12  Heat-resistant Coating................................6
                  
            2.13  High-gloss Coating....................................6
                  
            2.14  High-performance Architectural Coating................6
                  
            2.15  High-temperature Coating..............................7
                  
            2.16  Metal Parts and Products..............................7
                  
            2.17  Metallic Top Coating..................................7
                  
            2.18  Mobile Equipment......................................7
                  
            2.19  Mold-seal Coating.....................................7
                  
            2.20  Pan-backing Coating...................................7
                  
            2.21  Powder Coating........................................8
                  
            2.22  Pretreatment Wash Primer..............................8
                  
            2.23  Repair Coating........................................8
                  
            2.24  Safety Temperature-indicating Coating.................8
                  
            2.25  Silicone-release Coating..............................8
                  
            2.26  Solar-absorbent Coating...............................8
                  
            2.27  Stencil Coating.......................................8
                  
            2.28  Substrate.............................................9
                  
            2.29  Textured Finish.......................................9
                  
            2.30  Touch-up Coating......................................9
                  
            2.31  Utility Body..........................................9
                  
            2.32  Vacuum-metalizing Coating.............................9
                  
            2.33  Volatile organic compound (VOC).......................9
                  

          PART 3  REQUIREMENTS AND STANDARDS............................9
            
            3.1   VOC Content of Coatings...............................10
                  
            3.2   Add-on Controls Alternative...........................10
                  
            3.3   Extreme-Performance Coating Qualification.............11
                  

          PART 4  ADMINISTRATIVE REQUIREMENTS...........................11
            
            4.1   Record-keeping Requirements...........................11
                  
            4.2   Test Methods..........................................13
                  
            4.3   Method for Calculation of Grams of VOC per Liter......14
                  




          PART 1  GENERAL


          1.1   Purpose

            The purpose of this Rule is to reduce volatile organic compound
            emissions from the application of coatings to metal parts and
            products.


          1.2   Applicability

            Except as otherwise provided for in Section , the provisions of
            this Rule are applicable to the use of surface coatings applied
            to metal parts and products.


          1.3   Exemptions

            1.3.1   Sources complying with the provisions of this Rule
                    shall be exempt from provisions of District Rule 416.

            1.3.2   The provisions of this Rule shall not apply to aircraft
                    or aerospace vehicle coatings, marine vessel exteriors,
                    plastic coatings, magnetic wire coatings, motor vehicle
                    coatings and mobile equipment coatings.
            1.3.3   The provisions of this Rule shall not apply to stencil
                    coatings, safety temperature-indicating coatings,
                    powder coatings, and adhesives.

            1.3.4   The provisions of this Rule shall not apply to any
                    combination of coatings used per facility in a total
                    volume less than 55 gallons/year.

            1.3.5   For purposes of this Rule, exempt compounds, as defined
                    in Section , are not to be considered volatile organic
                    compounds.


          1.4   Effective Dates

              The requirements of this Rule shall become effective
              September 15, 1994.  Implementation dates for specific
              requirements are given in Part 3.


          1.5   References

            The requirements of this Rule arise from the requirements of
            Section 182(b)(2) of the federal Clean Air Act (Title 42 United
            States Code Section 7401 et seq.).




          PART 2  DEFINITIONS


          2.1   Adhesive

            Any substance that is used to bond surfaces together by
            attachment.


          2.2   Aircraft or Aerospace Vehicle Coating

            A coating applied to a fabricated part, an assembly of parts or
            completed unit of any aircraft, helicopter, missile or space
            vehicle.


          2.3   Air-dried Coating

            A coating that is cured at a temperature below 194F (90C) .


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          2.4   Baked Coating

            A coating that is cured at a temperature at or above 194F
            (90C).


          2.5   Camouflage Coating

            A coating used to conceal equipment from detection.


          2.6   Coating

            A material which is applied to a surface and which forms a
            continuous film in order to beautify and/or protect such
            surface.


          2.7   Combined Efficiency

            The capture efficiency multiplied by the control efficiency,
            expressed as an overall weight percent.


          2.8   Emissions Control Device

            A device which removes or destroys emissions of VOC to the
            atmosphere from the exhaust stream of a process.


          2.9   Etching Filler

            A coating that contains less than 23 percent solids by weight
            and at least 0.5 percent acid by weight, and is used instead of
            a pretreatment wash primer coating on a metal substrate,
            usually prior to a primer coating.


          2.10  Exempt Compounds

            Organic compounds which are excluded from the definition of
            volatile organic compounds by the EPA according to 40 CFR
            51.100.  The exclusions are based upon the determination by the
            EPA that the following exempt compounds have negligible
            photochemical reactivity:

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            2.10.1  Methane and inorganic carbon compounds;

              Methane, carbon monoxide, carbon dioxide, carbonic acid,
              metallic carbides or carbonates, and ammonium carbonate

            2.10.2  Chlorinated compounds;

              1,1,1-trichloroethane (methyl chloroform)
              methylene chloride (dichloromethane)

            2.10.3  Chlorofluorocarbons;

              trichlorofluoromethane (CFC-11)
              dichlorodifluoromethane (CFC-12)
              chlorodifluoromethane (CFC-22)
              trifluoromethane (CFC-23)
              1,1,1-trichloro-2,2,2-trifluoroethane (CFC-113)
              1,2-dichloro-1,1,2,2-tetrafluoroethane (CFC-114)
              chloropentafluoroethane (CFC-115)

            2.10.4  Hydrofluorocarbons;

              pentafluoroethane (HFC-125)
              1,1,2,2-tetrafluoroethane (HFC-134)
              1,1,1,2-tetrafluoroethane (HFC-134a)
              1,1,1-trifluoroethane (HFC-143a)
              1,1-difluoroethane (HFC-152a)

            2.10.5  Hydrochlorofluorocarbons;

              2,2-dichloro-1,1,1-trifluoroethane (HCFC-123)
              2-chloro-1,1,1,2-tetrafluoroethane (HCFC-124)
              1,1-dichloro-1-fluoroethane (HCFC-141b)
              1-chloro-1,1-difluoroethane (HCFC-142b)

            2.10.6  Perfluorocarbon compounds which fall into these
                    classes;

              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.

              Perfluorocarbons shall be assumed to be absent from a product
              or process unless a manufacturer or facility operator
              identifies the specific individual compounds (from the board
              classes of perfluorocarbon compounds) and the amounts present
              in the product or process and provides a validated test
              method which can be used to quantify the specific compounds.


          2.11  Extreme-performance Coating

            A coating used on a metal surface where the coated surface is,
            in its intended use, exposed to any of the following:

            2.11.1  industrial-grade detergents, cleaners, or abrasive
                    scouring agents;

            2.11.2  unprotected shipboard conditions;

            2.11.3  frequent or chronic exposure to salt water, corrosives,
                    caustics, acids, or oxidizing chemicals;

            2.11.4  other similar or harsher environmental conditions as
                    determined in writing by the Air Pollution Control
                    Officer of the Monterey Bay Unified Air Pollution
                    Control District.


          2.12  Heat-resistant Coating

            A coating applied to a substrate that must withstand a
            temperature of at least 400F (204C) during normal use.


          2.13  High-gloss Coating

            A coating which has a reflectance of 85 percent or more on a
            60 meter, when tested in accordance with ASTM Test Method
            D-523-1980, or its successors as amended.


          2.14  High-performance Architectural Coating

            A coating used to protect architectural substrates fabricated
            in a shop and which is required to meet the specifications of
            the Architectural Aluminum Manufacturer Association's
            Publication number AAMA 605.2-1980.
          2.15  High-temperature Coating

            A coating applied to a substrate that must withstand a
            temperature of 1000F (538C) during normal use.


          2.16  Metal Parts and Products

            Components or complete units fabricated from metal, excluding
            marine vessel exteriors, aerospace vehicles and components,
            motor vehicles and mobile equipment.


          2.17  Metallic Top Coating

            A coating which contains more than 0.042 pounds of metal
            particles per gallon (5 grams of metal particles per liter) of
            coating, as applied, where such particles are visible in the
            dried film.


          2.18  Mobile Equipment

            Any equipment which may be drawn or is capable of being driven
            on a roadway, including, but not limited to, truck bodies,
            truck trailers, camper shells, mobile cranes, bulldozers,
            concrete mixers, street cleaners, golf carts, all terrain
            vehicles, implements of husbandry, and hauling equipment used
            at airports, docks, depots, and industrial and commercial
            plants, excluding utility bodies.


          2.19  Mold-seal Coating

            The initial coating applied to a new mold or repaired mold to
            provide a smooth surface which, when coated with a mold release
            coating, prevents products from sticking to the mold.


          2.20  Pan-backing Coating

            A coating applied to the surface of pots, pans, or other
            cooking implements that are exposed directly to a flame or
            other heating elements.


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          2.21  Powder Coating

            Any coating applied as dry finely divided solid (without
            solvent or other carrier) which, when melted and fused, adheres
            to the substrate as a paint film.


          2.22  Pretreatment Wash Primer

            A coating which contains no more than 12 percent solids by
            weight, and at least 0.5 percent acid, by weight, is used to
            provide surface etching, corrosion resistance, adhesion, and
            ease of stripping when applied to metal surfaces.


          2.23  Repair Coating

            A coating used to recoat portions of a product which has
            sustained mechanical damage to the coating following normal
            painting operations.


          2.24  Safety Temperature-indicating Coating

            A coating which changes physical characteristics, such as
            color, to indicate unsafe temperature conditions.


          2.25  Silicone-release Coating

            Any coating which contains silicone resin and is intended to
            prevent food from sticking to metal surfaces such as baking
            pans.


          2.26  Solar-absorbent Coating

            A coating which has as its prime purpose the absorption of
            solar radiation.


          2.27  Stencil Coating

            A coating which is rolled or brushed onto a template or stamp
            in order to add identifying figures to metal parts and
            products.


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          2.28  Substrate

            A part, substance, or foundation to be acted upon.


          2.29  Textured Finish

            A rough surface produced by spraying large drops of coating
            onto a previously applied coating.


          2.30  Touch-up Coating

            A coating used to cover minor coating imperfections appearing
            after the main coating operation.


          2.31  Utility Body

            A special purpose compartment or unit that will be bolted,
            welded, or affixed onto an existing cab and chassis.  The
            compartment may serve as storage for equipment or parts.


          2.32  Vacuum-metalizing Coating

            The undercoat applied to the substrate on which the metal is
            deposited or the overcoat applied directly to the metal film.


          2.33  Volatile organic compound (VOC)

            Any compound containing at least one atom of carbon, except
            exempt compounds.




          PART 3  REQUIREMENTS AND STANDARDS

          The requirements of this Part shall be effective on June 15,
          1995.


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                                    REGULATION IV
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          3.1   VOC Content of Coatings

            A person shall not apply to affected metal parts and products
            any coating with a VOC content (including any VOC-containing
            materials added to the original coating supplied by the
            manufacturer), less water and less exempt compounds, in excess
            of the limits identified below.  The VOC content shall be
            calculated in accordance with the method identified in Section
            .

                                    COATING LIMITS

                 Grams of VOC per Liter/Pounds per Gallon of Coating
                         Less Water and Less Exempt Compounds



           COATING CATEGORY               BAKED               AIR-DRIED



                                      grams/literlbs/gal  grams/liter
          lbs/gal


          GENERAL COATING LIMITS        360       3.0         420       3.5

          SPECIALTY COATING LIMITS
          Camouflage                    360       3.0         420       3.5
          Etching Filler                420       3.5         420       3.5
          Extreme Performance           420       3.5         420       3.5
          Heat-Resistant                420       3.5         420       3.5
          High Gloss                    360       3.0         420       3.5
          High Performance-Architectural420       3.5         420       3.5
          High Temperature              420       3.5         420       3.5
          Metallic                      360       3.0         420       3.5
          Mold-Seal                     420       3.5         420       3.5
          Pan Backing                   420       3.5         420       3.5
          Pretreatment Wash Primer      420       3.5         420       3.5
          Silicone Release              420       3.5         420       3.5
          Solar-Absorbent               360       3.0         420       3.5
          Vacuum-Metalizing             420       3.5         420       3.5




          3.2   Add-on Controls Alternative

            In lieu of complying with the VOC content limitations in
            Section , add-on controls may be used provided:
            3.2.1   the combined efficiency of capture and control of the
                    system is not less than 90 percent by weight in
                    reducing volatile organic compounds;

            3.2.2   The Air Pollution Control Officer issues written
                    approval for such equipment in the form of an Authority
                    to Construct and Permit to Operate containing
                    monitoring requirements including but not limited to:

              3.2.2.1 Monitoring equipment shall be used in accordance with
                      vendor or manufacturer specifications.

              3.2.2.2 When operating a thermal incinerator, combustion
                      temperature shall be continuously monitored.

              3.2.2.3 When operating a catalytic incinerator, exhaust gas
                      and inlet gas temperature shall be continuously
                      monitored.

              3.2.2.4 When operating a carbon adsorber or emission control
                      system other than a thermal or catalytic incinerator,
                      daily emission control device efficiency shall be
                      monitored.


          3.3   Extreme-Performance Coating Qualification

            A person shall apply to and receive approval from the Air
            Pollution Control Officer (APCO) to have a coating classified
            as an extreme-performance coating prior to application of such
            coating.  The APCO may classify a coating as an extreme
            performance coating provided that the petitioner demonstrates
            that the intended use of each coated object requires an
            extreme-performance coating and has successfully demonstrated
            that general coating limits contained in Section  are
            unsuitable.  This classification shall be effective for one
            year.  Such classification must be renewed annually.




          PART 4  ADMINISTRATIVE REQUIREMENTS


          4.1   Record-keeping Requirements

            4.1.1   Record-keeping of Use of Coatings Identified in Section
                    .

              4.1.1.1 Any person subject to this Rule shall maintain
                      written monthly records necessary to demonstrate
                      compliance.  Information to be collected shall
                      include at least the items identified below.  The
                      information shall be available for review by District
                      personnel.  The District may request that additional
                      information be provided if it is necessary to
                      determine compliance with the rule.

                4.1.1.1.1 types of all coatings used;

                4.1.1.1.2 name of each coating and manufacturer;

                4.1.1.1.3 VOC content of each coating;

                4.1.1.1.4 VOC, water and exempt compound content of
                          reducers;

                4.1.1.1.5 mix ratios of coatings and reducers;

                4.1.1.1.6 applicable coating category for each coating
                          used, as indicated in Section .

            4.1.2   Record-keeping for Claiming Exemptions to this Rule

              4.1.2.1 Any person claiming the 55 gallon per year exemption
                      pursuant to Subsection  of this Rule shall maintain
                      monthly records containing the following information:

                4.1.2.1.1 types of all coatings used;

                4.1.2.1.2 name of each coating and manufacturer;

                4.1.2.1.3 VOC content of each coating;

                4.1.2.1.4 volume of all coatings;

                4.1.2.1.5 VOC, water and exempt compound content of
                          reducers;

                4.1.2.1.6 mix ratios of coatings and reducers;

                4.1.2.1.7 applicable coating category for each coating
                          used, as indicated in Section .

              4.1.3   Record-keeping for Add-on Controls Alternative

                4.1.3.1 Any person complying with the add-on control
                        alternative technology provision of this Rule
                        pursuant to Section  shall keep the following
                        written daily records:

                  4.1.3.1.1 Capture and control system and monitoring
                            equipment log of operating time.

                  4.1.3.1.2 Capture and control system and monitoring
                            equipment, log detailing all routine and
                            non-routine maintenance performed, including
                            dates and durations of any equipment outages.

                  4.1.3.1.3 Daily records of the applicable monitoring
                            information required by Sections , and  to
                            demonstrate the continuous, compliant operation
                            of the emission control device during periods
                            of emission producing activities.

            4.1.4   All written records required by Section  shall be
                    maintained for a minimum of five (5) years and be
                    available for inspection by the APCO.


          4.2   Test Methods

            4.2.1   VOC Content

              The volatile organic content of coatings subject to the
              provisions of this Rule shall be measured by procedures
              contained in EPA Reference Method 24 (40 CFR 60, Appendix A).

            4.2.2   Exempt Compounds Content

              For the purposes of compliance with this Rule, measurement of
              exempt compounds shall be performed in accordance with ASTM
              D-4457-85 (Solvents and Coatings), or its successors as
              amended, and be consistent with the provisions set forth in
              the Federal Register (FR, Vol. 56, No. 52, March 18, 1991).

            4.2.3   Acid Content

              Measurement of acid content shall be conducted and reported
              in accordance with ASTM Test Method D 1613-85, or its
              successors as amended.

            4.2.4   Metal Content

              Measurement of metal content shall be conducted and reported
              in accordance with the South Coast Air Quality Management
              District's Spectrographic Method 311, or its successor as
              amended.

          061594                                               RULE 434:  6
                                    REGULATION IV
                                     PROHIBITIONS
            4.2.5   Solids Content of Etching Fillers

              The solids content of etching fillers shall be determined
              using EPA Reference Method 24 (40 CFR 60, Appendix A).

            4.2.6   Initial Boiling Point of Liquid Containing VOC

              Determinations of the initial boiling point of liquid
              containing VOC shall be performed in accordance with ASTM D
              1078-86, or its successors as amended.

            4.2.7   Capture Efficiency

              The capture efficiency of an emissions control device shall
              be determined using EPA Capture Efficiency Test Protocols as
              contained in 40 Code of Federal Regulations Part 52.741
              (iii).

            4.2.8   Control Efficiency

              The control efficiency of air an emissions control device
              shall be determined using EPA Methods 2, 2A, 2C, or 2D for
              measuring flow rates and EPA Methods 25, 25A, or 25B for
              measuring the total gaseous organic concentrations at the
              inlet and outlet of the emissions control device as contained
              in 40 Code of Federal Regulations Part 60, Appendix A.

            4.2.9   Volumetric Flow Rate

              Volumetric flow rate shall be determined by EPA Methods 2,
              2A, 2C and 2D.


          4.3   Method for Calculation of Grams of VOC per Liter

            4.3.1   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 is 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 coating material, in liters
                        Vw  =   volume of water, in liters
                        Ves =   volume of exempt compounds, in liters

                                      * * * * *
          061594                                               RULE 434:  7