N.C. Department of Environment and Natural Resources
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15A NCAC 02D .0968 AUTOMOBILE AND LIGHT DUTY TRUCK ASSEMBLY COATINGS



(a) For the purpose of this Rule, the following definitions apply:



(1) (2)



(3)



(4)



(5) (6)



(7)



"Automobile" means a motor vehicle designed to carry up to eight passengers, excluding vans, sport utility vehicles, and motor vehicles designed primarily to transport light loads of property. "Automobile Topcoat Protocol" means Protocol For Determining The Daily Volatile Organic Compound Emission Rate Of Automobile and Light-duty Truck Topcoat Operations (EPA-450/3-88018). "Electrodeposition" means a process of applying a protective, corrosion-resistantwaterborne primer on exterior and interior surfaces that provides coverage of recessed areas. It is a dip coating method that uses an electrical field to apply or deposit the conductive coating onto the part. The object being painted acts as an electrode that is oppositely charged from the particles of paint in the dip tank. "Final repair" means the operations performed and coating(s) applied to completely assembled motor vehicles or to parts that are not yet on a completely assembled vehicle to correct damage or imperfections in the coating. "Light-duty truck" means vans, sport utility vehicles, and motor vehicles designed primarily to transport light loads of property with gross vehicle weight rating of 8,500 pounds or less. "Primer-surfacer" means an intermediate protective coating applied over the electrodeposition primer (EDP) and under the topcoat. Primer-surfacer provides adhesion, protection, and appearance properties to the total finish. "Solids turnover ratio (RT)" means the ratio of total volume of coating solids that is added to the EDP system in a calendar month divided by the total volume design capacity of the EDP system.



(b) This Rule applies to automobile and light-duty truck assembly coating operations and related cleaning activities whose emissions of volatile organic compounds exceed the threshold established in Paragraph (b) of Rule .0902 of this Section at:



(1)



automobile or light-duty assembly plants during the vehicle assembly processes with the following primary coating product applications:



(A) (B) (C)



new automobile or new light-duty truck bodies, or body parts for new automobiles or new light-duty trucks; other parts that are coated along with these bodies or body parts; or additional coatings which include glass bonding primer, adhesives, cavity wax, sealer, deadener, gasket/gasket sealing material, underbody coating, trunk interior coating, bedliner, weatherstrip adhesive, and lubricating waxes/compounds; and



(2)



facilities that perform coating operations on a contractual basis other than plastic or composites molding facilities.



(c) This Rule does not apply to:



(1) (2)



(3)



aerosol coatings of automobile and light-truck assembly coatings; coatings that are applied to other parts intended for use in new automobiles or new light-duty trucks (e.g., application of spray primer, color and clear coat to fascia or bumpers) on coating lines that are not related to the vehicle assembly process at automobile or light-duty assembly plants. They are covered by Rules .0964, and .0967 of this Section; and aftermarket repair or replacement parts for automobiles or light-duty trucks that are covered by Rules .0964, and .0967 of this Section.



(d) With the exception of materials supplied in containers with a net volume of 16 ounces or less, or a net weight of one pound or less, emissions of volatile organic compounds before control for: (1) automobile and light-duty truck assembly coatings shall not exceed limits established in Table 1. Table 1. Volatile Organic Compounds emission limits for automobile and light-duty truck assembly coatings.



Assembly Coating Process Electrodeposition primer (EDP) operations (including application area, spray/rinse stations, and curing oven)



Volatile Organic Compounds Emission Limit



When solids turnover ratio (RT)  0.16; 0.7lb/gal coatings solids applied. When 0.040 RT <0.160; 0.0840.160-R x 8.34 lb/gal coating solids applied. When RT < 0.040; No VOC emission limit.



Primer-surfacer operations(including 12.0 lb VOC/gal deposited solids on a daily weighted average





application area, flash-off area, and oven) Topcoat operations (including application area, flash-off area, and oven) Final repair operations



Combined primer-surfacer and topcoat operations



basis as determined by following the procedures in the revised Automobile Topcoat Protocol 12.0 lb VOC/gal deposited solids on a daily weighted average basis as determined by following the procedures in the revised Automobile Topcoat Protocol 4.8 lb VOC/gallon of coating less water and less exempt solvents on a daily weighted average basis or as an occurrence weighted average. 12.0 lb VOC/gal deposited solids on a daily weighted average basis as determined by following the procedures in the revised Automobile Topcoat Protocol



(2)



materials used at automobile and light-duty truck assembly coatings facilities shall not exceed limits established in Table 2.



Table 2. Volatile Organic Compounds emission limits for miscellaneous materials used at automobile and light-duty



Material Automobile and light-duty truck glass bonding primer Automobile and light-duty truck adhesive Automobile and light-duty truck cavity wax Automobile and light-duty truck sealer Automobile and light-duty truck deadener Automobile and light-duty truck gasket/gasket sealing material Automobile and light-duty truck underbody coating Automobile and light-duty truck trunk interior coating Automobile and light-duty truck bedliner Automobile and light-duty truck weatherstrip adhesive Automobile and light-duty truck lubricating wax/compound VOC Emission Limit 900 250 650 650 650 200 650 650 200 750 700



(e) EPA Method 24 or 25A (40 CFR Part 60, Appendix A-7) shall be used to determine the volatile organic compounds content of coatings, other than reactive adhesives used at automobile and light-duty truck coating facilities unless the facility maintains records to document the volatile organic compounds content of coating materials from the manufacturer. (f) The emission limits established in Paragraph (d) of this Rule may be achieved with a combination of higher-solid solvent-borne coatings, efficient application equipment and bake oven exhaust control. (g) The owner or operator of any facility subject to this Rule shall comply with the Rules .0903 and .0958 of this Section.



History Note:



Authority G.S. 143-215.3(a)(1); 143-215.107(a)(5); Eff. September 1, 2010.






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Last Modified: Wed Sep 22 08:02:18 2010
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