VENTURA COUNTY AIR POLLUTION CONTROL DISTRICT

RULE 74.20 - ADHESIVES AND SEALANTS
(Adopted 6/8/93, Revised 9/10/96, 1/14/97)

A. Applicability
     
  The provisions of this rule apply to any person who supplies, sells, offers for sale, manufactures, solicits the application of, or uses adhesives, sealants, sealant primers or adhesive primers in Ventura County.
     
B. Requirements
     
  1. Adhesives/Sealants/Adhesive Primers (Specific Applications): No person shall apply any nonaerosol adhesive, sealant or primer, which is defined under the following product categories, and has an ROC content, less water and exempt organic compounds in excess of the following limits, as applied (for low-solid adhesives, sealants or primers, the ROC content is based on a gram/liter of material basis). The sales prohibition in Section B.14 shall apply to the following adhesive products, adhesive primers, and sealants, except where exempted by Subsections B.14.d, B.14.e, and B.14.f.

Limits

 

Grams of ROC per Liter of Adhesive, Sealant or Primer

 

Less Water and Exempt Organic Compounds

 
     

Category

Effective Dates

 
    Adhesives Products:

1/1/95

1/1/97

1/1/98
      Ceramic Tile Installation   130      
      Cove Base Installation   150      
      Contact Adhesive   200      
      Contact Adhesive-Specialty       540 200
      Floor Covering Installation
(Except Ceramic Tile)
  150      
      Multipurpose Architectural
(Except Cove Base Installation)
  200      
      Nonmembrane Roof Install/Repair   300      
      Single Ply Roof Membrane
Installation/Repair Adhesives
  650   250  
      Structural Glazing Adhesive   100      
      Tire Retread       100  
      Traffic Marking Tape Adhesive   550     150
    Plastic Welding Products:          
      ABS Welding   400      
      Cellulosic Plastic Welding       100  
        (except ethyl cellulose)          
      CPVC Welding   490      
      PVC Welding   510      
      Styrene-Acrylonitrile Welding       100  
      Other plastic welding not listed above   500      
                 
              Effective Dates
              1/1/95 7/1/98
    Adhesive Primers:          
      Other Adhesive Primer (Not listed below)       250  
      Automotive Glass Adhesive Primer       700  
      Plastic Cement Welding Primer       650  
      Single Ply Roof Membrane          
        Adhesive Primers       650 250 
    Sealants:          
      Architectural       250  
      Nonmembrane Roof Install/Repair       300  
      Roadway       250  
      Single-Ply Roof Membrane
Sealant
      450  
      Other Sealants (Not Listed)         420
                 
     

Category

Effective Date

 
    Sealant Primers:      

1/1/97

 
      Architectural Nonporous      

250

 
      Architectural Porous      

775

 
      Marine Deck      

760

 
      Other Sealant Primers (Not Listed)      

775

 
                 
    2. Adhesives/Sealants/Adhesive Primers (Substrates or Nonspecific Operations): No person shall apply any nonaerosol adhesive, sealant or primer to a substrate with an ROC content, less water and exempt organic compounds in excess of the following limits, as applied (for low-solid adhesives, sealants or primers, the ROC content is based on a gram/liter of material basis).
                 
      If an adhesive is used to bond dissimilar substrates, except for bonding flexible vinyl to any other substrate, the applicable substrate category with the highest ROC limit shall be the limit for that operation. If an operator uses an adhesive or sealant product listed in Subsection B.1, then the requirement in that section applies rather than this one. The sales prohibition in Subsection B.14 does not apply to adhesives subject to the following substrate ROC limits.
                 

Limits

 

Grams of ROC per Liter of Adhesive/Sealant

 

Less Water and Exempt Organic Compounds

 
             

Effective Dates

      Substrate/Application      

1/1/95

7/1/98

      Fiberglass      

200

 
      Flexible Vinyl to Flexible Vinyl      

660

250

      Flexible Vinyl to Any Other Substrate      

250

 
      Metal to Metal      

30

 
      Plastic Foam      

120

 
      Porous Material (Except Wood and Plastic Foam)  

150

 
      Wood      

30

 
      All Other Substrates      

250

 
                 
    3. Adhesive Aerosols: No person shall use any adhesive aerosol with an ROC content greater than the following limit (by weight):
      Effective Date   1/1/98   1/1/2002  
      ROC Limit   75 percent 25 percent  
                 
    4. Substrate Surface Preparation Prior to Bonding: No person shall use a material for substrate surface preparation which exceeds the following applicable limit:
                 
      Category Type of Limit   Limit  
      Single Ply Roof ROC Composite   45 mm of Hg
      Membrane Installation Partial Pressure at 20oC  
                 
      All Others ROC Content   70 g/l of
material
                 
  5. Adhesive Cleanup: No person shall use ROC-containing materials for the removal of adhesives or coatings from surfaces, other than spray application equipment, unless the ROC composite partial pressure of the materials used is less than 45 mm of Hg at 20 oC.
     
  6. Storage of ROC-Containing Materials: All ROC-containing materials shall be stored in nonabsorbent, nonleaking containers, which shall be closed except when adding or removing materials.
     
  7. Adhesive Spray Application Equipment Cleaning: No person shall use ROC-containing materials for the cleaning of spray application equipment used in adhesive operations unless one of the following is used:
     
    a. An enclosed gun washer or "low emission spray gun cleaner" that has been approved in writing by the APCO is properly used and is closed when not in use. The ROC composite partial pressure of organic solvents used shall be less than 45 mm Hg at 20 oC; or
       
    b. A solvent containing no more than 70 grams of ROC per liter of material shall be used for cleaning, flushing or soaking of filters, flushing lines, pipes, pumps, and other parts of the application equipment. Parts containing dried adhesive may be soaked in an organic solvent as long as the ROC composite partial pressure of the solvent is 9.5 mm of Hg or less at 20 oC.
       
  8. Add-on Control Equipment Option: In lieu of complying with the provisions of Subsections B.1, B.2 or B.3, emissions of ROC may be controlled by an emission capture and control system, which reduces ROC emissions to the atmosphere, provided that:
       
    a. The combined control and capture efficiency reduces emissions by at least 85 percent, by weight, during any period of continuous operation not to exceed 24 hours, and
       
    b. Combustion temperature is continuously monitored when operating a thermal incinerator, and
       
    c. Inlet and exhaust gas temperature is continuously monitored when operating a catalytic incinerator, and
       
    d. Control device efficiency is continuously monitored when operating a carbon adsorber or control device other than a thermal or catalytic incinerator, and
       
    e. Written approval for such equipment, in the form of an Authority to Construct and a Permit to Operate is received from the Air Pollution Control Officer (APCO).
       
  9. Adhesive Strippers: No person shall use an adhesive stripper unless its ROC composite partial pressure is 9.5 mm Hg or less at 20 oC.
       
  10. Primers, Sealants or Adhesives Containing 1,1,1-Trichloroethane or Methylene Chloride: Effective January 1, 1997, no person shall apply any primer, sealant or adhesive to any surface, if that product contains any 1,1,1-trichloroethane or methylene chloride. Adhesives containing methylene chloride used to solvent weld the following plastic substrates are exempt from this requirement:
       
    a. Polycarbonate
    b. Polysulfone
    c. Acrylics including Polymethylmethacrylate (PMMA)
    d. Phenylene-Oxide based resins
    e. Polyetherimide
       
  11. Prohibition of Specification: No person shall solicit, require for use, or specify the application of any adhesive, primer or sealant, if such use or application results in a violation of the provisions of this Rule. This prohibition shall apply to all written or oral contracts.
       
  12. Compliance Statement Requirement: The manufacturer of any adhesive, sealant, sealant primer or adhesive primer subject to this rule and manufactured after July 14, 1997, shall include a designation of the maximum ROC or VOC content as supplied, including adhesive components, expressed in grams per liter or pounds per gallon excluding water and exempt organic compounds (percent by weight for adhesive aerosols) from the appropriate test method, on containers and data sheets. This designation shall include recommendations regarding thinning, reducing, or mixing with any other ROC or VOC-containing materials. This statement shall include the maximum ROC or VOC on an as-applied basis when used in accordance with the manufacturer's recommendations.
       
  13. Liquid Cleaning Material Compliance Statement: The manufacturer of liquid cleaning materials subject to this rule shall designate on product containers and data sheets the ROC content and ROC Composite Partial Pressure of cleaning materials as supplied. This designation shall include recommendations regarding mixing with any other ROC containing materials, and express the cleaning material ROC content when used in accordance with the manufacturer's recommendations. All letters and numbers used to designate ROC or VOC content on product labels shall be visible and legible.
         
  14. Prohibition of Sales
         
    a. Except as provided in Subsections B.14.d, B.14.e, or B.14.f, no person shall supply, sell, or offer for sale any adhesive, sealant or adhesive primer which, at the time of sale, is defined under a product category in Subsection B.1 and exceeds the ROC limits listed in Subsection B.1 after the specified effective dates. This provision only applies to products that are supplied to or sold to persons within the District.
         
    b. Except as provided in Subsections B.14.d or B.14.f, no person shall supply, sell, or offer for sale, any adhesive aerosol which, at the time of sale, exceeds the ROC limits listed in Subsection B.3 after the specified effective dates.
         
    c. Effective January 1, 1997, except as provided in Subsections B.14.d, B.14.e, and B.14.f, no person shall supply, sell, or offer for sale any adhesive, sealant or adhesive primer which, at the time of sale, contains any 1,1,1-trichloroethane or methylene chloride, except for those adhesives designed to solvent weld polycarbonates, polysulfones, acrylics, phenylene oxide based resins or polyetherimides.
         
    d. The sales prohibition in Subsections B.14.a, B.14.b and B.14.c shall not apply to any supplier or seller of any adhesive, sealant or adhesive primer as follows:
         
      1) Any adhesive shipped outside of the District for use outside of the District.
         
      2) The sale of adhesives to a user who has installed an APCD permitted ROC add-on control device.
         
    e. The sales prohibitions in Subsections B.14.a and B.14.c shall not apply to the sale of any adhesive, sealant, or adhesive primer, except plastic cement welding adhesives or primers, if:
         
      1) The product is sold in any container(s) having a capacity of 16 ounces or less (net volume) or 1 pound or less (net weight); and
         
      2) The total weight or volume of two or more containers packaged together must be less than 1 pound or 16 ounces, respectively, to qualify for this exemption.
         
    f. The sales prohibitions in Subsections B.14.a, B.14.b, and B.14.c shall not apply to any manufacturer of any adhesive, sealant, or adhesive primer if the manufacturer has provided an accurate compliance statement and if:
         
      1) The product was not sold directly to a user or a sales outlet located in the District, or
         
      2) The product was sold to an independent distributor that is not a subsidiary of, or under the direct control of the manufacturer.
         
C. Exemptions
         
  1. Low Usage Exemption: The provisions of Rule 74.20, except section B.14, shall not apply to any stationary source emitting not more than 200 pounds of ROC per rolling period consisting of 12 consecutive calendar months from adhesive operations including adhesives, sealants, adhesive primers, solvents, and aerosol adhesive spray products. Emissions from degreasing units subject to Rule 74.6.1, 74.6.2, and/or 74.6.3 shall not be included in this determination. Any person claiming this exemption shall provide monthly records sufficient to substantiate this claim.
         
  2. Exemption of Operations Subject to Other District Rules: The provisions of this rule shall not apply to the following operations that are subject to other District rules.
         
    a. Assembling, manufacturing and repairing of aerospace components subject to Rule 74.13, excluding manufacturing of aircraft tires.
         
    b. Any graphic arts operation subject to the requirements of Rule 74.19, Graphic Arts.
         
    c. Any screen printing operation subject to the requirements of Rule 74.19.1, Screen Printing Operations.
         
  3. Exemption of Specific Operations from ROC Standards for Adhesives/Sealants (Substrates or Nonspecific Operations): The ROC substrate limits of Subsection B.2 of this rule shall not apply to the following operations. If a specific application can be defined under one of the product categories in Subsection B.1, then this exemption does not apply.
         
    a. Assembling and manufacturing of undersea-based weapon systems.
         
    b. Testing and evaluation of adhesive or sealant products in any research and development or analytical laboratories.
         
    c. Solvent welding operations used in the manufacturing of medical devices.
         
    d. Tire repair operations, provided the label on the adhesive used states "For Tire Repair Only".
         
    e. Plaque laminating operations where adhesives are used to bond a clear, polyester acetate laminate to wood with lamination equipment installed prior to July 1, 1992. Any person seeking to claim this exemption shall notify the APCO in writing that a complying adhesive is not available.
         
    f. Manufacturing operations of the following products: diving suits, rubber fuel bladders, inflatable boats, life preservers or other products designed for immersion in liquids. The adhesive products used by these operations must be labeled "For the bonding of immersible products only."
         
  4. Exemption of Specific Adhesives: Any adhesive or sealant that contains less than 20 g/l of ROC is exempt from all the provisions of this rule.
         
  5. The provisions of Subsection B.2 of this rule shall not apply to any person who uses less than 10 gallons per rolling period (consisting of 12 consecutive calendar months) per stationary source of an adhesive, a sealant, or an adhesive primer in a separate formulation provided the total volume of noncomplying adhesives, sealants, or adhesive primers at a stationary source does not exceed 55 gallons per rolling period (consisting of 12 consecutive calendar months). If a specific adhesive, sealant, sealant primer or adhesive primer can be defined under one of the product categories in Subsection B.1, then this exemption does not apply. Any person seeking to claim this exemption shall notify the APCO in writing that a complying adhesive, sealant or primer is not available and maintain records sufficient to substantiate this claim.
         
D. Recordkeeping
         
  1. Any person subject to this rule shall:
         
    a. Maintain a current file of each adhesive, sealant, adhesive primer, stripper and solvent in use and in storage that is required to be tracked by a District permit condition. The file shall provide all of the data necessary to evaluate compliance and shall include the following information, as applicable:
         
      1) A data sheet or material list giving material name and manufacturer identification.
         
      2) Any catalysts, reducers or other components used and the mix ratio.
         
      3) The ROC content limit or ROC composite partial pressure limit from Section B, and the actual ROC content, as applied, or ROC composite partial pressure of the adhesive, sealant, primer, or solvent.
         
    b. Maintain records of the monthly volume of each complying adhesive, sealant, primer or solvent used that is required to be tracked by a District permit condition.
         
    c. Maintain records of the daily volume of each noncompliant adhesive, sealant, primer or solvent used. Adhesives, sealants or primers qualifying for the exemption in Subsection C.5 shall not be subject to this daily recordkeeping requirement.
         
    d. When compliance is achieved through the use of add-on control equipment, maintain records on a daily basis of key operating parameters for the emission control equipment, including, but not limited to:
         
      1) Hours of operation
         
      2) Routine and nonroutine maintenance
         
      3) The applicable information specified in Subsection B.8
         
  2. All records shall be retained for at least two (2) years from the date of each entry and shall be available to District personnel upon request.
         
E. Test Methods
     
  1. The ROC and solids content of all nonaerosol adhesives products, adhesive primers and cleaning solvents, except as specified in Section E.4, shall be determined using EPA Reference Method 24 (40 CFR Part 60, Appendix A).
     
  2. Exempt organic compounds shall be determined using ASTM D4457-85. For exempt compounds where no reference test method is available, a facility requesting the exemption shall provide appropriate test methods approved by the APCO and approvable by the U.S. EPA.
     
  3. The ROC content of aerosol adhesives or aerosol adhesive primers shall be determined using test procedures and equipment specified in ARB Method 310, Determination of Volatile Organic Compounds (VOC) in Consumer Products.
     
  4. The ROC content of any plastic pipe welding cement adhesive or primer shall be determined using Proposed SCAQMD Laboratory Method of Analysis for Enforcement Samples, Method 316a.
     
  5. The capture and control efficiency of air pollution control equipment shall be determined according to EPA's technical document, "Guidelines for Determining Capture Efficiency," January 9, 1995, and methods in 40 CFR 52.741 (a)(4)(vi) - Volatile Organic Material Gas Phase Source Test Methods, (a)(4)(iv) - Control Device Efficiency Testing and Monitoring.
     
  6. ROC composite partial pressure shall be calculated using a widely accepted published source such as: Boublik, T., V. Fried and E. Hala, "The Vapor Pressure of Pure Substances," Elsevier Scientific Publishing Co., New York (1973), Perry's Chemical Engineer's Handbook, McGraw-Hill Book Company, CRC Handbook of Chemistry and Physics, Chemical Rubber Publishing Company (1986-87), and Lange's Handbook of Chemistry, John A. Dean, editor, McGraw-Hill Book Company (1985). The true vapor pressure of a component in a mix may be determined by ASTM Method D2879-86. The ROC composite pressure of a solvent mix consisting entirely of ROC may be determined by ASTM Method D2879-86.
     
  7. The active and passive solvent losses from spray gun cleaning systems shall be determined using SCAQMD's "General Test Method for Determining Solvent Losses from Spray Gun Cleaning Systems" dated October 3, 1989. The test solvent for this determination shall be any lacquer thinner with a minimum ROC composite partial pressure of 105 mm of Hg at 20 oC, and the minimum test temperature shall be 15 oC.
     
  8. Effective November 30, 1997, the ROC content of any cyanoacrylate adhesive shall be determined using SCAQMD Test Method: "Determination of Volatile Organic Compounds (VOC) in Cyanoacrylate Adhesives."
     
F. Violations
     
  Failure to comply with any provision of this rule, including the requirement to maintain records or supply VOC or ROC information, or supply ROC composite partial pressure information, shall constitute a violation of this rule. Noncompliance determined by any test method specified or referenced in this Rule is a violation of this Rule. Where more than one approved test method may be applicable, sources shall not be required to demonstrate compliance using more than one approved test method.
     
G. Definitions
     
  1. "ABS Welding Adhesive": Any adhesive that is intended by the manufacturer to weld acrylonitrile styrene (ABS) plastic. ABS is made by reacting monomers of acrylonitrile, butadiene, and styrene and is normally identified with ABS marking.
     
  2. "Acrylic": Acrylic is any plastic polymer that contains at least one version of a methacrylate monomer, including but not limited to: methylmethacrylate or butylmethacrylate.
     
  3. "Adhesive": Any substance that is used to bond one surface to another surface by attachment.
     
  4. "Adhesive Primer": Any coating that does not contain any adhesive and is intended by the manufacturer to be applied to a substrate, prior to the application of an adhesive, to provide a bonding surface.
     
  5. "Adhesive Stripper": A volatile liquid applied to remove a cured or dried adhesive.
     
  6. "Aerosol Adhesive": A mixture of rubber, resins, and liquid and gaseous solvents and propellants packaged in a disposable pressurized spray container for hand-held application.
     
  7. "Architectural Sealant/Primer": Any sealant or sealant primer intended by the manufacturer to be applied to stationary structures, including mobile homes, and their appurtenances. Appurtenance to an architectural structure include, but are not limited to: hand railings, cabinets, bathroom and kitchen fixtures, fences, rain gutters and downspouts, and windows.
     
  8. "Automotive Glass Adhesive Primer": Any adhesive primer that is intended by the manufacturer to be applied to automotive glass prior to installation with an adhesive/sealant. This primer improves adhesion to the pinch weld and blocks ultraviolet light.
     
  9. "Carbon Adsorption": A carbon unit that is typically either a fixed-bed or a fluidized-bed design. ROC-laden air is pretreated, if necessary, to remove any solids, liquids, and long-chain, high-boiling organic compounds that might coat the carbon. The exhaust stream then passes through the adsorbing bed where the ROCs collect on the surface of the carbon.
     
  10. "Catalytic Incinerator": An incinerator that requires a catalyst to promote the oxidation of the ROCs at a lower temperature. The catalyst is often, but not always, a platinum serial metal deposited in a porous form onto a structure, such as a honeycomb, or pellets. The ROCs are preheated up to 650 to 900 oF and then enter the catalyst area. There the oxidation of the ROCs continue to produce an increase in temperature across the catalyst bed.
     
  11. "Cellulosic Plastics": Any plastic containing the naturally occurring polymer or polysaccharide, cellulose (C6H10O5)n. Examples includes cellulose acetate, cellulose acetate butyrate, cellulose nitrate and cellulose propionate.
     
  12. Ceramic Tile Installation Adhesive": Any adhesive that is intended by the manufacturer to be used for installation of ceramic tiles.
     
  13. "Contact Adhesive": Any adhesive that is intended by the manufacturer to adhere to itself instantaneously upon contact. This adhesive is applied to both adherends and allowed to become dry, which develops a bond when the adherends are brought together without sustained pressure. For the purpose of this rule, products that qualify as a contact adhesive using the above definition, and that are labeled exclusively for only one of the following applications shall not be required to meet the ROC limit for "Contact Adhesives" in Subsection B.1.:
    a. Single-ply roofing material installation
    b. Bonding of immersible products
    c. Bonding of flexible vinyl to flexible vinyl
       
  14. "Contact Adhesive-Specialty": Specialty contact adhesives are contact adhesives that are intended by the manufacturer to be used for the bonding of nonporous substrates to each other or for the bonding of melamine.
       
  15. "Cove Base Installation Adhesive": Any adhesive that is intended by the manufacturer to be used for cove base (or wall base) installation. The cove base is generally made of vinyl or rubber, and is installed on a wall or vertical surface at floor level.
       
  16. "CPVC Welding": Any adhesive intended by the manufacturer for the welding of CPVC (chlorinated polyvinyl chloride) plastic. CPVC is a polymer of the monomer that contains 67 percent chlorine and is normally identified with a CPVC marking.
       
  17. "Cyanoacrylate Adhesive": Any adhesive with an acrylate base which polymerizes very easily in the presence of a slightly basic surface having on it adsorbed water. Cyanoacrylates have the following properties:
    a. Very fast bond formation
    b. High bond strength with thin glue line
    c. No added catalyst or mixing needed
    d. No solvent to evaporate during bond formation
    e. Contact pressure usually sufficient
    f. Very low shrinkage
       
  18. "Exempt Organic Compounds": As defined in Rule 2, Definitions, of these Rules.
     
  19. "Flexible vinyl": Nonrigid polyvinyl chloride plastic with at least five percent, by weight, of plasticizer content. A plasticizer is a material, such as a high-boiling point organic solvent, that is incorporated into an adhesive to increase its flexibility, workability, or distensibility, and may be determined using ASTM Method E260-91 or from product formulation data.
     
  20. "Floor Covering Installation Adhesive": Any adhesive that is intended by the manufacturer to be used for the installation of wood flooring, linoleum, indoor carpet, outdoor carpet, resilient tile, or artificial grass.
     
  21. "Grams of ROC per liter of Adhesive, less water and exempt organic compounds": The weight of ROC per combined volume of ROC and coating solids calculated using the following equation:
     
  Grams of ROC per Liter of Adhesive   Ws - Ww - Wes
    = -------------------
  Less Water and Exempt Organic Compound   Vm - Vw - Ves

  where Ws

=

Weight of volatile compounds (grams)
    Ww

=

Weight of water (grams)
    Wes

=

Weight of exempt organic compounds (grams)
    Vm

=

Volume of material (liters)
    Vw

=

Volume of water (liters)
    Ves

=

Volume of exempt organic compounds (liters)

  22. "Grams of ROC per Liter of Material": The weight of ROC per volume of material shall be calculated using the following equation:
     
  Grams of ROC per Liter of Material   Ws - Ww - Wes  
    = -------------------  
     

Vm

 
  where Ws

=

Weight of volatile compounds (grams)
    Ww

=

Weight of water (grams)
    Wes

=

Weight of exempt organic compounds (grams)
    Vm

=

Volume of material (liters)

  23. "Gun Washer": Electrically or pneumatically operated system that is designed to clean spray application equipment and minimize emissions. A gun washer may also be considered a gun cleaning system that consists of spraying solvent into an enclosed container using a snug fitting.
     
  24. "Low Emission Spray Gun Cleaner": Any properly used spray gun equipment cleanup device which has passive solvent losses of no more than 0.6 grams per hour and has active solvent losses of no more than 15 grams per operating cycle as defined by the test method in Subsection E.7.
     
  25. "Low-Solids Adhesive, Sealant or Primer": Any product that contains 120 grams or less of solids per liter of material.
     
  26. "Marine Deck Sealant Primer": Any sealant primer intended by the manufacturer to be applied to wooden marine decks.
     
  27. "Multipurpose Architectural Adhesives": Any adhesive that is intended by the manufacturer to be applied for the installation, manufacture, or repair of various construction materials to bond architectural structures or appurtenances, including but not limited to drywall, subfloor, panel, tileboard, deck and lumber, seams, fiberglass reinforced plastic (FRP), ceiling tile and acoustical tile. Adhesives used to bond uninstalled cabinets, counters and other architectural appurtenances are subject to this adhesive category.
     
  28. "Nonmembrane Roof Installation Repair": Any sealant or adhesive that is intended by the manufacturer to install or repair nonmembrane roofs and that is not intended for the installation of prefabricated single-ply flexible roofing membranes. This category includes plastic or asphalt roof cement, asphalt roof coatings, and cold application cement.
     
  29. "Percent ROC by Weight": The ratio of the weight of ROC to the weight of the material, expressed as a percentage by weight. The percent ROC by weight is calculated as follows:
     
     

Wv

   
  % ROC weight

=

------   x 100
     

W

   

  Where Wv = Weight of the ROCs (grams)
    W = Weight of the Material (grams)

  30. "Plastic Cement Welding Adhesive": Any adhesive which is made of resins and solvents, that is intended by the manufacturer to dissolve the surfaces of plastic to form a bond between mating surfaces.
     
  31. "Plastic Cement Welding Primer": Any primer intended by the manufacturer to prepare plastic substrates prior to welding.
     
  32. "Plastics": Synthetic materials chemically formed by the polymerization of organic (carbon-based) materials.
     
  33. "Polycarbonate": Polycarbonate is a type of thermoplastic "structural" foam and contains a plastic resin that can be found in Lexan manufactured by General Electric Company or in Tuffrak manufactured by Rohm and Haas Company.
     
  34. "Porous Material": A material whose surface is permeable to liquids; such materials include but are not limited to paper, and corrugated paperboard.
     
  35. "PVC Welding Adhesive": Any adhesive intended by manufacturer to weld polyvinyl chloride (PVC) plastic. PVC plastic is a polymer of the chlorinated vinyl monomer that contains 57 percent chlorine and which is normally identified with a PVC marking.
     
  36. "Reactive Organic Compounds (ROC)": As defined in Rule 2, Definitions, of these Rules. The term "volatile organic compound" (VOC) is equivalent to ROC.
     
  37. "Roadway Sealant": Any sealant intended by the manufacturer to be applied to public streets, highways, and other surfaces, including but not limited to curbs, berms, driveways and parking lots.
     
  38. ROC Composite Partial Pressure": The sum of the partial pressures of the compounds defined as ROCs. ROC composite partial pressure is calculated as follows:


  Where:    
  W

=

Weight of the "i"th ROC compound, in grams
  Ww 

=

Weight of water, in grams
  We 

=

Weight of the "e"th exempt compound, in grams
  MWi

=

Molecular weight of the "i"th ROC compound, in g/(g-mole)
  MWw

=

Molecular weight of water, in g/(g-mole)
  MWe

=

Molecular weight of the "e"th exempt organic compound, in g/(g-mole)
  PPc

=

ROC composite partial pressure at 20 C, in mm Hg
  VPi

=

Vapor pressure of the "i"th ROC compound at 20 C, in mm Hg.

  39. "Rubber": Rubber includes any natural or manmade rubber substrate, including but not limited to: styrene-butadiene rubber (SBR), polychloroprene (Neoprene), butyl rubber, nitrile rubber, chlorosulfonated polyethylene (CSM), and ethylene propylene diene terpolymer (EPDM).
     
  40. "Sales Outlet": Any establishment at which adhesives, sealants, or adhesive primers can be sold in person to users of such products.
     
  41. "Sealant Primer": Any product intended by the manufacturer to be applied to a substrate, prior to the application of a sealant, to enhance the bonding surface.
     
  42. "Sealants": Any material with adhesive properties that is formulated primarily to fill, seal, waterproof or weatherproof gaps or joints between two surfaces.
     
  43. "Single-Ply Roof Membrane Adhesive Primer": Any primer intended by the manufacturer to clean and promote adhesion of the single-ply roof membrane seams or splices prior to bonding.
     
  44. "Single-Ply Roofing Membrane Installation/Repair Adhesive": An adhesive intended by the manufacturer to be used for the installation or repair of a prefabricated single-ply flexible roofing membrane. Single-ply roofing membranes are field-applied using just one layer of membrane material. The containers must be labeled exclusively for such use. Installation includes, as a minimum, attaching the edge of the membrane to the edge of the roof and applying flashing to the vents, pipes and ducts that protrude through the membrane. Repair includes gluing the edges of tears together, attaching a patch over a hole, and reapplying flashings to vents, pipes or ducts installed through the membrane.
     
  45. "Single-Ply Roofing Membrane Sealant": A sealant intended by the manufacturer to be used for the installation or repair of a prefabricated single-ply flexible roofing membrane. The containers must be labeled exclusively for such use.
     
  46. "Solvent": Organic, petrochemical compounds which are used as diluents, thinners, dissolvers, reducers, cleaning agents, or for similar uses.
     
  47. "Structural Glazing Adhesive": Any adhesive that is intended by the manufacturer to be used to adhere glass, ceramic, metal, stone, or composite panels to exterior building frames.
  48. Substrate Surface Preparation": Cleaning of a substrate to remove dirt, oils, and other contaminants. This surface cleaning is typically done prior to the application of primers, adhesives, or sealants.
     
  49. "Thermal Incineration": A direct-flame incinerator that depends on flame contact and high temperatures in the range of 1200 to 1500 oF to complete oxidation of ROCs. Thermal incinerators usually consist of refractory-lined chambers, burners, controllers, safety equipment and heat recovery equipment.
     
  50. "Tire Repair": The repair of a hole, tear, fissure, or blemish in a tire casing by grinding or gouging, applying adhesive or sealant product and filling the hole or crevice with rubber.
     
  51. "Tire Retread": The process of tire retreading is where adhesives are applied to the back of precured tread rubber and to the casing and cushion rubber. It may also be used to seal buffed tire casings to prevent oxidation while the tire is being prepared for a new tread.
     
  52. "Traffic Marking Tape": A preformed reflective film intended by the manufacturer to be applied to public streets, highways, and other surfaces, including but not limited to curbs, berms, driveways and parking lots.
     
  53. "Traffic Marking Tape Adhesive": Any adhesive intended by the manufacturer to be applied to surfaces prior to installation of traffic marking tape.
     
  54. "Undersea Based Weapons Systems Components": The fabricated part, assembly of parts or completed units of any portion of the missile launching system used on undersea ships.
     
  55. "Volatile Organic Compound (VOC)": Shall have the same meaning as Reactive Organic Compounds (ROC) as defined in Rule 2 of these Rules.