SDAPCD RULE 67.9 AEROSPACE COATING OPERATIONS               
LAST REVISED 11/02/93

               
               RULE 67.9. AEROSPACE COATING OPERATIONS
                          (Effective 8/24/83:  Rev. Effective 11/2/93)

                (a)   APPLICABILITY

                      (1)  This rule is applicable to the coating, masking,
                bonding, and paint stripping of aerospace components in 
                operations where aerospace coatings are used, to surface 
                cleaning related to these aerospace coating operations, and to 
                the cleanup of application equipment associated with these 
                operations.

                      (2)  Any coating, surface cleaning or equipment cleaning
                operation which is exempt from all or a portion of this rule
                pursuant to Section (b), shall comply with the provisions of 
                Rule 66, 67.6 and/or Rule 67.12 as applicable.

                (b)   EXEMPTIONS

                      (1)  The provisions of Subsections (d)(1) through 
                (d)(5), (d)(7), (f)(2), and (f)(3) shall not apply to the 
                following:

                           (i)   Touch-up coatings and stencil coatings.

                           (ii)  A stationary source where not more than 50
                      gallons per year of aerospace coating is used.

                           (iii) Coatings with separate formulations that are 
                      used in volumes of less than 20 gallons per year 
                      provided not more than 50 gallons per year of all such 
                      non-compliant coatings are used at the stationary 
                      source.  This amount does not include coatings specified 
                      in Subsections (b)(1)(i), (b)(1)(iv), (b)(1)(v) and 
                      (b)(1)(vi).

                           (iv)  Coatings used exclusively for purposes of
                      research and development, including coatings applied to
                      mock-ups and prototypes, provided not more than 50 
                      gallons per year of all such non-compliant coatings are 
                      used at the stationary source.

                           (v)   Coatings applied using non-refillable aerosol
                      spray containers.

                           (vi)  Prepreg composite materials.

                      It shall be the responsibility of any person claiming 
                any of the above exemptions to maintain calendar year records 
                of coating usage.  Such records shall show the amount of each 
                coating used in accordance with information required by 
                Subsection (f)(1) of this rule.  These records shall be 
                retained on site for at least three years and shall be made 
                available to the District upon request.

                      (2)  The provisions of Subsection (d)(2) shall not apply 
                to the use of air brushes with a capacity of three ounces 
                (188.6 ml) or less.

                      (3)  The provisions of Subsections (d)(7), (f)(2) and 
                (f)(3) shall not apply to adhesives, sealants and caulking and 
                smoothing compounds, which have a VOC content, as applied, of 
                less than 250 grams of VOC per liter of coating, less water 
                and less exempt compounds.

                      (4)  The provisions of Subsections (d)(7), (f)(2) and 
                (f)(3) shall not apply to adhesives and sealants which are 
                applied outside application stations required to have a 
                District Permit to Operate.

                      It shall be the responsibility of any person claiming
                exemptions (b)(3) or (b)(4) above to maintain calendar year 
                usage records.  Such records shall show the amount of each 
                adhesive and sealant used in accordance with information 
                required by Subsection (f)(1) of this rule.  These records 
                shall be retained on site for at least three years and shall 
                be made available to the District upon request.

                      (5)  Provisions of Subsection (d)(2) shall not apply to 
                a stationary source where not more than one gallon per day of
                aerospace coating is used.  It shall be the responsibility of 
                any person claiming this exemption to maintain daily records 
                of coating usage according to Section (f) of this rule.  These
                records shall be retained on site for at least three years and
                shall be made available to the District upon request.

                (c)   DEFINITIONS

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

                      (1)  "Adhesive" is a material that is used to bond one
                surface to another surface by attachment.

                      (2)  "Adhesive Bonding Primer" is a coating applied in a
                very thin film to aerospace adhesive bond detail components 
                for corrosion inhibition and adhesion of the subsequently 
                applied adhesive.

                      (3)  "Adhesive Bonding Primer, Structural" is an 
                adhesive bonding primer used in conjunction with structural 
                adhesives to form load carrying aircraft components.

                      (4)  "Adhesive Bonding Primer for Elastomers and 
                Elastomeric Adherends" is an adhesive bonding primer applied 
                to elastomers or nonmetallic substrates for adhesion of the 
                subsequently applied adhesive.

                      (5)  "Aerospace Coatings" are materials including but 
                not limited to those specified in the table in Subsection 
                (d)(1)(i) of this rule, which contain more than 20 grams of 
                VOC per liter of coating, as applied, less water and less 
                exempt compounds.  Preservative oils and compounds, form 
                release agents not containing solids, and greases and waxes 
                are not aerospace coatings.

                      (6)  "Aerospace Component" is any raw material, partial 
                or completed fabricated part, assembly of parts or completed 
                unit of any aircraft, helicopter, missile or space vehicle, 
                including mockups, test panels and prototypes.

                      (7)  "Antichafe Coating" is a coating applied to 
                aerospace components' moving surfaces which may rub other 
                aerospace components' surfaces during normal operation.  A 
                material shall not be classified as an antichafe coating if 
                it can also be classified as a dry lubricative material or a 
                solid film lubricant.

                      (8)  "Application Equipment" is equipment used for 
                applying coatings to a substrate.  Application equipment 
                includes coating distribution lines, coating hoses, equipment 
                used in hand application methods, and equipment used in 
                mechanically operated application methods, including but not 
                limited to spray guns, spinning disks, and pressure pots.

                      (9)  "Bearing Coating" is a coating applied to an anti-
                friction bearing, a bearing housing or the area adjacent to 
                such a bearing in order to facilitate bearing function or to 
                protect base material from excessive wear.  A material shall 
                not be classified as a bearing coating if it can also be 
                classified as a dry lubricative material or a solid film 
                lubricant.

                      (10) "Caulking and Smoothing Compounds" are semi-solid
                materials which are applied by hand application methods and 
                are used to aerodynamically smooth exterior vehicle surfaces 
                or fill cavities such as bolt hole accesses.  A material shall 
                not be classified as a caulking and smoothing compound if it 
                can also be classified as a sealant.

                      (11) "Conformal Coating" is a coating applied to 
                electrical conductors and circuit boards to protect them 
                against electrical discharge damage and/or corrosion.

                      (12) "Dry Lubricative Material" is a coating consisting 
                of lauric acid, cetyl alcohol, waxes, or other non-cross 
                linked or resin-bound materials which act as a dry lubricant.

                      (13) "Elastomeric Adhesive" is a rubber or silicone 
                based adhesive used to bond elastomeric materials to metal 
                substrates or to provide a flexibility to the bond formed.

                      (14) "Electromagnetic Radiation Effect Coatings" are
                coatings primarily applied to prevent radar detection, 
                detection by infrared reflectance and electromagnetic 
                interference.

                      (15) "Exempt Compound" is any of the following compounds 
                or classes of compounds:  methylene chloride, 1,1,1-
                trichloroethane, trichlorofluoromethane (CFC -11), 
                dichlorodifluoromethane (CFC-12), chlorodifluoromethane 
                (HCFC-22), trifluoromethane (HFC-23), trichlorotrifluoroethane 
                (CFC-113), dichlorotetrafluoroethane (CFC-114), 
                chloropentafluoroethane (CFC-115), dichlorotrifluoroethane 
                (HCFC-123), tetrafluo-roethane (HFC-134a), 
                dichlorofluoroethane (HCFC-141b), chlorodifluoroethane 
                (HCFC-142b), 2-chloro-1,1,1,2-tetrafluoroethane (HCFC-124),
                pentafluoroethane (HFC-125), 1,1,2,2 -tetrafluoroethane 
                (HFC-134), 1,1,1-trifluoroethane (HFC-143a), 1,1-
                difluoroethane (HFC-152a); and the following four classes of 
                perfluorocarbon (PFC) compounds:

                           (i)   cyclic, branched, or linear, completely
                      fluorinated alkanes;

                           (ii)  cyclic, branched, or linear, completely
                      fluorinated ethers with no unsaturations;

                           (iii) cyclic, branched, or linear, completely
                      fluorinated tertiary amines with no unsaturations; and

                           (iv)  sulfur containing perfluorocarbons with no
                      unsaturations and with sulfur bonds only to carbon and
                      fluorine.

                      (16) "Flight Test Coating" is a coating applied to an
                aircraft prior to flight testing to protect the aircraft from
                corrosion and to provide the required markings during flight 
                test evaluation.

                      (17) "Form or Mold Release Agent" is a coating applied 
                to metal sheets or metal/ composite molds to prevent galling 
                and/or to keep the metal or composite part from being held by 
                a mold or die during forming or molding.

                      (18) "Fuel Tank Adhesive" is an adhesive used in 
                conjunction with a fuel tank coating to bond aerospace 
                components exposed to fuel and must be compatible with fuel 
                tank coatings.

                      (19) "Fuel Tank Coating" is a coating applied to the
                interior of a fuel tank, fuel fill and drainage tracks, or
                surfaces frequently wetted by fuel of an  aircraft or space
                vehicle to protect them from corrosion, including corrosion 
                due to acidic by-products of bacterial growth.

                      (20) "Hand Application Method" is the application of
                coatings by manually held non-mechanically operated equipment.
                Such equipment includes paint brushes, hand rollers, caulking
                guns, trowels, spatulas, syringe daubers, rags and sponges.

                      (21) "High Temperature Coating" is a coating that must
                withstand temperatures higher than 350 F (177 C).

                      (22) "High Temperature Resistant, Thermal Flash 
                Resistant, Rain Erosion Resistant Coating" is a 
                fluoroelastomeric coating that is designed specifically to 
                protect aerospace vehicles from thermonuclear flash, erosion 
                from airborne particles such as rain, ice, sand, etc., and 
                temperatures above 450 F (233 C).

                      (23) "High-Volume Low-Pressure (HVLP) Spray" is a 
                coating application method using a pressurized air at a 
                permanent pressure between 0.1 and 10.0 psig, not to exceed 
                10.0 psig measured at the air cap of the coating application 
                system.

                      (24) "Heat Treatment Scale Inhibitor" is a coating that 
                is applied to the surface of a part prior to thermal 
                processing to inhibit the formation of scale.

                      (25) "Hot Melt Sealant" is a solid sealant that is 
                liquefied in a heat gun prior to application to a joint.

                      (26) "Impact Resistant Coating" is a flexible coating 
                that protects aerospace components, such as aircraft landing 
                gear, landing gear compartments and other under fuselage 
                surfaces, subject to abrasion from impact from runway debris.

                      (27) "Line Sealer Maskant" is a maskant used to cover 
                scribe lines in maskant in order to protect against etchant 
                in multi-step etching processes.

                      (28) "Maskant for Chemical Milling" is a coating applied
                directly to metal aerospace components to protect surface 
                areas during chemical milling.

                      (29) "Maskant for Chemical Processing" is a coating 
                applied directly to aero-space components to protect surface 
                areas during anodizing, aging, bonding, plating, etching, or 
                other chemical surface operations.

                      (30) "Optical Anti-Reflective Coating" is a coating with 
                a low reflectance in the infrared and visible wavelength range 
                used for anti-reflection on or near optical laser hardware.

                      (31) "Prepreg Composite Material" is a reinforcing 
                material impregnated with partially polymerized organic resins 
                and ready for application.

                      (32) "Preservative Oils and Compounds" are coatings 
                which are applied on areas that are not intended to be painted 
                such as cables and exterior surfaces to prevent corrosion 
                and/or to provide lubrication.

                      (33) "Pretreatment Coating" is a coating which contains 
                at least one-half percent by weight of acid to provide surface
                etching, and is applied directly to metal surfaces to provide
                corrosion resistance, adhesion and ease of stripping.

                      (34) "Primer" is a coating usually applied for purposes 
                of corrosion prevention, protection from the environment, 
                functional fluid resistance and adhesion of subsequent 
                coatings.  A primer would include a coating which is 
                formulated to be used as a primer but which, in a specific 
                application, is used as an initial and final coating on 
                interior areas without subsequent application of a topcoat.

                      (35) "Rain Erosion Resistant Coating" is a coating that
                protects leading edges of an aircraft from erosion due to 
                rain, dust and other particles during flight, take-off or 
                landing.

                      (36) "Research and Development" means aerospace coating
                operations, including operations performed for purposes of 
                testing and quality control, which are not used for production 
                purposes to directly produce a deliverable product or service, 
                other than the first-article product or service.

                      (37) "Sealant" is a viscous semisolid material that 
                fills voids in order to seal out water, fuel, other liquids, 
                solids, or in some cases air currents, and is applied with 
                brushes, syringes, caulking guns, spray guns or spatulas or is 
                applied by fill and drain method.

                      (38) "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 disulfate,
                graphite, polytetrafluoroethylene, or other solids that act as 
                a dry lubricant between tightly fitting surfaces.

                      (39) "Space Vehicle Coating" is a coating applied to
                vehicles designed for use beyond the earth's atmosphere.

                      (40) "Stationary Source" as defined in Rule 20.1.

                      (41) "Stencil Coating" is an ink or coating which is 
                rolled, sprayed with an airbrush or a touch-up gun with 
                capacity of 8 ounces (236.4 ml) or less, or brushed using a 
                template to add identifying letters and/or numbers to 
                aerospace components.

                      (42) "Stripper" is a volatile liquid applied to remove a
                maskant, paint, paint residue or temporary protective coating.

                      (43) "Structural Adhesive - Autoclavable" is an adhesive
                used to bond load-carrying aircraft components which is cured 
                by heat and pressure in an autoclave or a press.

                      (44) "Structural Adhesive - Non-Autoclavable" is an 
                adhesive not cured in an autoclave or a press which is used to 
                bond load-carrying aircraft components or to perform other 
                critical functions, such as bonding near engines.

                      (45) "Structural Adhesive - Epoxy" is a liquid or paste
                adhesive consisting of an epoxy resin and a curing agent used 
                to bond aerospace components.

                      (46) "Temporary Protective Coating" is a pigmented 
                coating applied to an aerospace  component to protect it from 
                mechanical and/or environmental damage during manufacturing or 
                shipping.

                      (47) "Thermocontrol Coating" is a coating applied to 
                space vehicle components to reflect heat and formulated to 
                give specific heat reflectance, absorption and emissivity 
                properties, or is a coating required for aerospace engine 
                components to delay component failure due to fire.

                      (48) "Topcoat" is a coating applied over a primer as the
                final coat for purposes such as appearance, identification, or
                protection.

                      (49) "Touch-up Coating" is a coating that is used for 
                that portion of the coating operation which is incidental to 
                the main coating process but necessary to cover minor 
                imperfections or to achieve coverage as required.  A touch-up 
                coating may include small amounts of solvent, applied by hand, 
                used to attach coating patches exhibiting inadequate adhesion.

                      (50) "Transfer Efficiency" is the ratio of the weight or
                volume of coating solids adhering to the part being coated to 
                the weight or volume of coating solids used in the application
                process, expressed as a percentage.

                      (51) "Unicoat" is a coating which is applied directly to 
                an aerospace component, to a chemically treated and unpainted
                aerospace component, or over an old coating system in lieu of
                stripping the old coating system, for purposes of corrosion
                protection, environmental protection and/or functional fluid
                resistance and which is not subsequently topcoated.

                      (52) "Volatile Organic Compounds (VOC)" for the purpose 
                of this rule means any volatile compound of carbon, excluding
                methane, carbon monoxide, carbon dioxide, carbonic acid, 
                ammonium carbonate, metallic carbides, metallic carbonates, 
                and exempt compounds which may be emitted to the atmosphere 
                during operations or activities subject to this rule.

                      (53) "VOC Content Per Liter of Coating, Less Water and
                Exempt Compounds" means the weight of VOC per combined volume 
                of VOC and coating solids and is calculated by the following
                equation:
                                            Ws  -  Ww  -  Wes
                                 CcVOC  =   -----------------
                                            Vm  -  Vw  -  Ves
                where,

                      CcVOC = VOC content less water and exempt compounds
                      Ws    = weight of volatile compounds including water
                      Ww    = weight of water
                      Wes   = weight of exempt compounds
                      Vm    = volume of material
                      Vw    = volume of water
                      Ves   = volume of exempt compounds

                      (54) "VOC Content Per Liter of Material" means the 
                weight of VOC per volume of material and is calculated by the 
                following equation:

                                            Ws  -  Ww  -  Wes
                                CmVOC   =   -----------------
                                                   Vm

                where

                      CmVOC  =  VOC content
                      Ws     =  weight of volatile compounds including water
                      Ww     =  weight of water
                      Wes    =  weight of exempt compounds
                      Vm     =  volume of material

                      (55) "Wet Fastener Installation Coating" is a primer or
                sealant applied by dipping, brushing, or daubing to fasteners
                which are installed before the coating is cured.

                (d)   STANDARDS

                      (1)  VOC Limits.

                           (i)   A person shall not use in aerospace coating
                      operations any coating which contains VOC in excess of 
                      the following limits on and after the effective date 
                      specified:

                                   VOC content, grams per liter of coating as
                                 applied, less water and less exempt compounds

                                                     Effective Dates
          Coating Category                        5/21/91        7/1/94

          Adhesive Bonding Primers:

               Structural                              850           250
               For Elastomers and Elastomeric          850
               Adherends
               All Other Adhesive Bonding
               Primers                                 850           350
          
          Adhesives:

               Structural Autoclavable                  50
               Structural Epoxy                         50
               Structural Non-Autoclavable             850           250
               Elastomeric                             850
               All Other Adhesives                     250 (7/1/92)

               Antichafe Coatings                      600
               Bearing Coatings                        620
               Caulking and Smoothing Compounds        850
               Conformal Coatings                      750
               Dry Lubricative Materials:
                    Fasteners Lubrication              250 (7/1/92)
                    Non-Fasteners Lubrication          880
               Electromagnetic Radiation Effect 
                        Coatings                       800
               Flight Test Coatings:
                    Use on Missiles, Targets           420
                    All Others                         840
               Form Release Agents                     800
               Fuel Tank Adhesives                     620 (7/1/92)
               Fuel Tank Coatings                      650           420
               Heat Treatment Scale Inhibitors         880
               High Temperature Coatings               850
               High Temperature Resistant, Thermal 
                    Flash Resistant, Rain Erosion 
                    Resistant Coatings                 800
               Impact Resistant Coatings               600           420
               Line Sealer Maskants                    650
               Maskants (See also (d)(1)(ii), 
                    (iii) and (iv)) for:
                    Chemical Milling                   600           250
                    Chemical Processing                600           250
               Optical Anti-Reflective Coatings        700
               Pretreatment Coatings                   780
               Primers                                 350
               Primers Compatible with Rain Erosion
               Resistant Coatings                      850
               Rain Erosion Resistant Coatings         690           420
               Sealants                                600 (7/1/92)
               Hot Melt Sealants                       100
               Solid Film Lubricants:
                    Fasteners Lubrication              880           250
                    Non-Fasteners Lubrication          880
               Space Vehicle Coatings:
                    Electrostatic Discharge Protection 800
                    Other Space Vehicle Coatings      1000
                    Adhesives                          800
               Temporary Protective Coatings           250
               Thermocontrol Coatings                  600
               Topcoats                                420 (7/1/92)
               Unicoats                                420 (7/1/92)
               Wet Fastener Installation Coatings      675
               All Other Coatings                      420

                         (ii) Before July 1, 1994, a person shall not use
                    maskants for chemical milling or chemical processing
                    which have a VOC content of greater than 600 grams per
                    liter of coating, less perchloroethylene, less water
                    and less exempt compounds as applied, nor which have a
                    perchloroethylene content greater than 1200 grams per
                    liter of coating as applied, less water and less exempt
                    compounds.

                         (iii) After July 1, 1994, a person shall not use
                    maskants for chemical processing which have a VOC
                    content of greater than 250 grams per liter of coating,
                    less water, less perchloroethylene and less exempt
                    compounds as applied, nor which have a
                    perchloroethylene content greater than 1200 grams per
                    liter of coating as applied, less water and less exempt
                    compounds.

                         (iv) After July 1, 1994, a person shall not use
                    maskants for chemical milling which have a VOC content
                    greater than 250 grams per liter of coating as applied,
                    less water and less exempt compounds.

                    The requirements of Subsection (d)(1) may be met using
               an Alternative Emission Control Plan (AECP) that has been
               approved pursuant to Rule 67.1.  The AECP shall not include
               credit for reductions in the emissions of perchloroethylene
               nor credit for use of perchloroethylene.

                    (2)  Application Equipment.

                    Except as provided in Subsection (b)(5), a person shall
               not apply coatings containing more than 20 grams of VOC per
               liter of coating in aerospace coating operations subject to
               this rule except by means of the following application
               methods:

                         (i)  Electrostatic spray application, or

                         (ii) Flow coat application, or

                         (iii) Dip coat application, or

                         (iv) Hand application methods, or

                         (v)  Airless spray application for use with
                              maskants and temporary protective coatings only, 
                              or
                         (vi) High-volume low-pressure (HVLP) spray
                              application, or

                         (vii) Other coating application methods that are
                               demonstrated to have transfer efficiency at 
                               least equal to one of the above application 
                               methods, and which are used in such a manner 
                               that parameters under which they were tested 
                               are permanent features of the method.  Such
                               coating application methods shall be approved 
                               in writing by the Air Pollution Control 
                               Officer.

                    (3)  Coating Strippers.

                    A person shall not use a stripper in aerospace coating
               operations unless the stripper:

                         (i)  Contains 400 grams of VOC per liter of
                    material or less as applied, or

                         (ii) Has a total vapor pressure of VOC of 9.5 mm
                    Hg or less at 68F (20C).

                    (4)  Materials for Surface Cleaning.

                    A person shall not use a material for surface cleaning
               of an aerospace component unless:

                         (i)  The material contains 200 grams of VOC per
                    liter of material or less as applied, or

                         (ii) The material has a total vapor pressure of
                    VOC of 45 mm Hg or less at 68F (20C), or

                         (iii) The aerospace component is cleaned in an
                    enclosed cleaning material container which is only
                    opened when accessing parts or adding surface cleaning
                    materials.

                    (5)  Cleanup Solvents for Application Equipment.

                    A person shall not clean aerospace coating application
               equipment unless:

                         (i)  The equipment is cleaned in a solvent
                    container which is covered when not being accessed,
                    which has a facility for draining cleaned parts and the
                    drained solvent is returned to a closed container; or

                         (ii) The equipment is cleaned in a device which
                    totally encloses the application component parts during
                    washing, rinsing and draining; or

                         (iii) The cleaning solvent is transferred through
                    the application equipment, without exposure to air,
                    into a container that has in place an apparatus or
                    cover which completely covers the container and has no
                    visible holes, breaks, openings or separations between
                    adjoining components of the container or container
                    cover (the container may be equipped with vents
                    provided that such vents are necessary to comply with
                    applicable fire and safety codes); or

                         (iv) The cleaning solvent contains 200 grams or
                    less of VOC per liter of material or has a total vapor
                    pressure of VOC of 20 mm Hg or less at 68F (20C); or

                         (v)  The equipment or equipment parts are cleaned
                    in a container which is open only when being accessed
                    or when cleaning material is being added, and clean
                    equipment and/or equipment parts are drained to the
                    container until dripping ceases; or

                         (vi) The equipment is cleaned in a device where
                    liquid solvent is pumped from a solvent container to a
                    sink-like work area and which uses non-atomized solvent
                    flow to flush the spray equipment and collects and
                    returns the discharged solvent to the enclosed
                    container; or

                         (vii) The equipment is cleaned in any other manner
                    which minimizes evaporation of VOC's to the atmosphere,
                    clean equipment and/or equipment parts are drained to
                    the container until dripping ceases, and the cleaning
                    material is returned to a closed container.

                    (6)  A person shall not specify the application of a
               coating subject to this rule for any aerospace coating
               operation in San Diego County if such application  results
               in a violation of any provision of this rule. This
               prohibition is applicable to any written or oral contract
               under the terms of which any coating is applied to any
               aerospace component within San Diego County.

                    (7)  A person using aerospace coatings subject to this
               rule shall provide to the Air Pollution Control Officer a
               list of all coatings applied in each affected facility.
               Such list shall contain all information required by
               Subsection (f)(1).  The list shall also identify, for each
               aerospace coating, all applicable coating category uses,
               including allowable VOC content, specified in Subsection
               (d)(1)(i).  The list shall be revised before any aerospace
               coating is used for purposes other than those previously
               identified on the list.  The revised list shall be provided
               to the Air Pollution Control Officer upon request.
               Information necessary to demonstrate that the intended use
               of a coating is consistent with the applicable definition of
               the coating use contained in Section (c) shall be provided
               to the District upon request.

                    A person shall not use any aerospace coating unless the
               coating is included on such list and is used only as the
               coating category specified on the list for that specific
               coating.  If the  intended use of a coating has been
               determined in writing by the Air Pollution Control Officer
               to be inconsistent with the applicable definition of the
               coating use contained in Section (c) or if the VOC content
               of a coating does not comply with the applicable limits
               specified in Subsection (d)(1), the coating shall be deleted
               from the list and shall not be used.  Such determinations by
               the Air Pollution Control Officer shall not relieve the
               person using any aerospace coating from complying with the
               applicable definitions and VOC content limits of this rule.

                    (8)  A person shall not sell, offer for sale, or supply
               any coating, stripping or cleaning solvent for use in
               aerospace coating operations in San Diego County that, after
               May 21, 1991, was newly formulated to contain or
               reformulated to increase the content of methylene chloride,
               1,1,1,-trichloroethane, trichlorofluoromethane (CFC-11),
               dichlorodifluoromethane (CFC-12), trichlorotrifluoroethane
               (CFC-113), dichlorotetra-fluoroethane (CFC-114), or
               chloropentafluoroethane (CFC-115).

                    (9)  A person shall not manufacture, sell, offer for
               sale, or supply any coating, stripping or cleaning material
               for use in aerospace coating operations in San  Diego County
               unless the coating, stripping or cleaning material container
               displays the content of methylene chloride, 1,1,1-
               trichloroethane, trichlorofluoromethane (CFC-11),
               dichlorodifluoromethane (CFC-12), trichlorotrifluoroethane
               (CFC-113), dichlorotetrafluoroethane (CFC-114), or
               chloropentafluoroethane (CFC-115).

               (e)  CONTROL EQUIPMENT

                    (1)  Any person subject to this rule may comply with
               the provisions of Subsections (d)(1) through (d)(5) by using
               air pollution control equipment which has been approved in
               writing by the Air Pollution Control Officer provided that:

                         (i)  The air pollution control equipment has been
                    installed in accordance with an Authority to Construct;
                    and

                         (ii) Includes an emission collection system which
                    captures organic gaseous emissions, including emissions
                    associated with applicable coating, equipment cleaning,
                    and surface preparation operations, and transports the
                    captured emissions to an air pollution control device;
                    and

                         (iii) has a combined emissions capture and control
                    device efficiency of at least 85 percent by weight.

                    (2)  A person electing to comply with the provisions of
               Subsections (d)(1) through (d)(5) by using air pollution
               control equipment shall submit to the Air Pollution Control
               Officer for approval an Operation and Maintenance Plan for
               the air pollution control device and emission collection
               system.  Such plan shall:

                         (i)  Identify all key system operating parameters.
                    Key system operating parameters are those necessary to
                    ensure compliance with Subsections (e)(1)(ii) and
                    (e)(1)(iii) of this section, such as temperature,
                    pressure, and/or flow rate; and

                         (ii) Include proposed inspection schedules,
                    anticipated ongoing maintenance, and proposed
                    recordkeeping practices regarding the key system
                    operating parameters.

                    (3)  The Operation and Maintenance Plan must be
               submitted to the Air Pollution Control Officer and receive
               approval prior to operation of the air pollution control
               equipment.  A person subject to the requirements of this
               section shall implement the plan on the approval of the Air
               Pollution Control Officer.

               (f)  RECORDKEEPING

               Any person using coatings, strippers, thinners, surface
          cleaning materials or equipment cleaning materials in aerospace
          coating operations shall maintain records in accordance with the
          following requirements:

                    (1)  Maintain a current list of coatings, strippers,
               thinners, surface cleaning and equipment cleaning materials
               in use.  This list shall provide the data necessary to
               evaluate compliance, including, but not limited to:

                         (i)  Type and/or category of coating, stripper,
                    thinner, surface cleaning and equipment cleaning
                    material used, including manufacturer identification;

                         (ii) Mix ratio of components;

                         (iii) VOC content and/or total vapor pressure of
                    VOC of each coating, thinner, stripper, surface
                    cleaning and equipment cleaning material, as applied.

                    (2)  At a minimum, maintain records, each calendar
               month, showing the amount of each coating, stripper, and
               thinner used.  At a minimum, maintain inventory (dispensing)
               records each calendar month of solvents used for equipment
               cleaning and surface cleaning operations.  Maintain records
               of material additions to dip tanks used for dip coating
               applications.

                    All records shall be retained on site for at least
               three years and shall be made available to the District upon
               request.

                    (3)  A person using control equipment specified in
               Section (e) of this rule shall:

                         (i)  maintain records in accordance with
                    Subsections (f)(1) and (f)(2);

                         (ii) maintain daily usage records for all
                    coatings, strippers, cleaning and/or surface
                    preparation materials not in compliance with
                    Subsections (d)(1), (d)(3), (d)(4) or (d)(5) of this
                    rule; and

                         (iii) maintain daily records of key system
                    operating parameters specified in Subsection (e)(2)(i).

               (g)  TEST METHODS

                    (1)  Measurements of the VOC content of coatings,
               strippers and cleaning materials subject to Section (d) of
               this rule shall be conducted and reported in accordance with
               EPA Test Method 24 (40 CFR 60, Appendix A) as it exists on
               November 2, 1993.

                    (2)  Perfluorocarbon (PFC) compounds shall be assumed
               to be absent from aerospace coatings, strippers and cleaning
               materials subject to this rule unless a manufacturer of the
               material or a facility operator identifies the specific
               individual compound(s) and the amount(s) present in the
               material and provides an approved test method which can be
               used to quantify the specific compounds.

                    (3)  Measurements of VOC emissions subject to Section
               (e) of this rule shall be conducted in accordance with EPA
               Methods 18, 25, and/or 25A (40 CFR 60, Appendix A) as they
               exist on November 2, 1993 and in accordance with a protocol
               approved by the Air Pollution Control Officer.

                    (4)  Measurements of transfer efficiency pursuant to
               Subsection (d)(2)(vii) of this rule shall be conducted in
               accordance with the South Coast Air Quality Management
               District's "Spray Equipment Transfer Efficiency Test
               Procedure for Equipment User" as it exists on November 2,
               1993.

                    (5)  Total vapor pressure of VOC containing materials
               pursuant to Subsections (d)(3)(ii), (d)(5)(iv) and
               (d)(4)(ii) of this rule shall be calculated by using the
               District's "Procedure for Estimating the Vapor Pressure of a
               Solvent Mixture" as it exists on November 2, 1993.  If the
               vapor pressure of the liquid mixture exceeds the limits
               specified in Subsections (d)(3)(ii), (d)(5)(iv) and
               (d)(4)(ii), as applicable, the vapor pressure shall be
               determined in accordance with ASTM Standard Test Method
               D2879-83, Vapor Pressure-Temperature Relationship and
               Initial Decomposition Temperature of Liquids by
               Isoteniscope.  The fraction of water and exempt compounds in
               the liquid phase shall be determined by using ASTM Standard
               Test Methods D 3792-86 and D 4457-85 and shall be used to
               calculate the partial pressure of water and exempt
               compounds.  The results of vapor pressure measurements
               obtained using ASTM Standard Test Method D2879-83 shall be
               corrected for the partial pressure of water and exempt
               compounds.

                    (6)  Measurements of acid content of pretreatment
               coating pursuant to Subsection (c)(33) of this rule shall be
               conducted in accordance with ASTM Standard Test Method D
               1613-91 for Determination of Acidity in Volatile Solvents
               and Intermediates used in Paint, Varnish, Lacquer and
               Related Products or in accordance with the test procedure
               specified in MIL-C-8514C(ASG) as it exists on November 2,
               1993.

                    (7)  Measurements of perchloroethylene content in
               maskants pursuant to Subsections (d)(1)(ii) and (d)(1)(iii)
               shall be conducted in accordance with the South Coast Air
               Quality Management District's Test Method 310-91 for
               Determination of Perchloroethylene as it exists on 
               November 2, 1993.