(Adopted March 6, 1987)(Amended Apr il 3, 1987)(Amended August 3, 1990) (Amended December 7, 1990) (Amended August 2, 1991)(Amended July 10, 1992) (Amended May 13, 1994)(Amended November 17, 2000)(Amended November 9, 2001) (Amended July 11, 2003)(Amended Ju ly 9, 2004)(Amended July 8, 2005)

RULE 1162 POLYESTER RESIN OPERATIONS

(a) Applicability
This rule shall apply to all polyester resin operations that fabricate, rework, repair, or touch-up products for comm ercial, military, or industria l use including, but not limited to, boats, tubs, pools, shower encl osures, spas, bathroom fixtures, jigs, tools, molds, building panels, air pollution control equipment, sewage treatment equipment, storage tanks, transportation pa rts, automotive, aircraft, and aerospace components, and other industrial and consumer products.

(b) Definitions
For the purpose of this rule, the following definitions shall apply: (1) AIR-ASSISTED AIRLESS SPRAY is a coating application system in which the coating fluid is supplied to the gun under fluid pressure and air is combined at the spray cap. (2) CLOSED MOLDING SYSTEM is a method of fabricating composite parts by placing composite material s in a confining mold cavity and applying pressure and/or heat. (3) CORROSION-RESISTANT MATERIAL S are polyester resin materials used to make products for corrosion resi stant applications such as tooling, fuel or chemical tanks, boat hulls, pools and outdoor spas. (4) ELECTROSTATIC APPLICATION is charging of atomized coating droplets for deposition to a grounded subs trate by electrostatic attraction. (5) EXEMPT COMPOUND is as defined in Rule 102. (6) FIBER REINFORCEMENT MATERIAL S are multifilament of glass or other fibrous materials such as, ca rbon, boron, metal and amid polymers, which are used to reinforce plastic. (7) FIBER REINFORCED PLASTIC OR COMPOSITE (FRP/C) MATERIALS is a mixture of polyester resin and fiber reinforcement
materials. (8) FILLER is a finely divided iner t (non-VOC) material, which may be
added to the resin to enhance its mechanical properties and extend itsRule 1162 (Cont.) (Amended July 8, 2005)

1162-2 volume. Resin fillers include, but are not limited to, silica, carbon black, talc, mica and calcium carbonate. (9) FILLED POLYESTER RESIN MATERIA L is a material formulated by adding compatible filler(s) to polyester resin material(s). (10) FIRE RETARDANT MATERIALS are polyester resin ma terials used to make products that are resi stant to flame or fire. (11) FLOWCOATER is a nonatomizing a pplication technique of applying resins and gel coats to an open mold with a fluid nozzle in a fan pattern with no air supplie d to the nozzle. (12) GEL COAT is a thermosetting poly ester resin surface coating, either pigmented or clear, that provides a cosmetic enhancement and improves resistance to degradation from exposure to the elements. (13) GENERAL PURPOSE PO LYESTER RESINS are resi n materials that are not corrosion resistant, fire reta rdant, high strength, or gel coats. (14) HAND LAY-UP is a hand applicati on technique of co mposite materials using a bucket and a paint brush or a paint roller, or other hand held method of application. (15) HIGH-VOLUME, LOW-PRESSURE (HVLP) SPRAY is a coating application system which is operated at air pressures between 0.1 and 10 pounds per square inch gauge (psig) m easured dynamically at the center of the air cap and at the air horns. (16) HIGH-STRENGTH MATERIALS are poly ester resins whic h have casting tensile strength of 10,000 psi or more and which are used for manufacturing of high performance boats and skis. (17) LAMINATION RESINS are or thophthalate, isophthalate and dicyclopentadiene (DCPD) resins which are used in composite system made of layers of reinforcement fibers and resins, such as in boat
fabrication. (18) MARBLE OR CULTURED RESINS are orthophthalate and modified acrylic isophthalate resins , which are designed for the fabrication of cast products, such as vanities. (19) MONOMER is a volatile organic co mpound that partially combines with itself, or other similar compounds, by a cross-linking react ion to become a part of the cured resin. Monomers incl ude, but are not limited to, styrene and methyl methacrylate.Rule 1162 (Cont.) (Amended July 8, 2005)

1162-3 (20) MONOMER PERCENT BY WEIGHT OF A RESIN is the weight of the monomer, divided by the weight of the polymer. (21) MONOMER PERCENT BY WE IGHT OF A FILLED RESIN AS APPLIED is the weight of the mono mer, divided by the weight of the polymer and filler(s). (22) NONATOMIZING SPRAY APPLICATI ON is any application technique in which resin flows from the app licator, in a steady and observable coherent flow, without droplets, for a minimum distance of three (3) inches from the applicator orifices. (23) OPEN MOLDING SYSTEM is a met hod of fabricating composite parts by applying gel coats, resins, fibers, a nd other composite materials on an open mold using either hand lay-up or spray-up applications. (24) PIN STRIPING is a spray applicatio n technique used to apply one or more narrow bands, marks, or streaks of ge l coat onto the surface of an open mold of a composite product. (25) POLYESTER is a polymer of este r molecules, which are formulated by
the reaction of an acid and an alcohol and linked together by the ester linkages. (26) POLYESTER RESIN MATERIALS are polyester resins, such as isophthalic, orthophthalic, halogenated, bi sphenol A, vinyl ester, or furan resins; cross-linking agents; catalysts; gel coats; inhibitors; accelerators; promoters; and any other material co ntaining VOC used in polyester resin operations. (27) POLYESTER RESIN OPERATIONS fa bricate, rework, repair, or touchup products for commercial, military, or industrial use by mixing, pouring, hand laying-up, impregnating, inje cting, forming, winding, spraying, and/or curing by using po lyester resin materials. (28) POLYMER is a chemical compound, such as polystyrene, comprised of a large number of chemical units (mon omer) composed of identical crosslinking groups, such as styrene. (29) PRESSURE-FED ROLLER is a fabric roller that is fed with continuous supply of catalyzed resins fr om a mechanical fluid pump. (30) PRIMER GEL COAT is gel coat wh ich is used to coat the surface of composite parts, prior to top-coat painting, for automotive, aerospace, marine and home building industries.Rule 1162 (Cont.) (Amended July 8, 2005)

1162-4 (31) PULTRUSION is a process where continuous roving strands are moved through a strand-tensioning device into a resin bath for impregnation and then passed through a heated die for curing. (32) REPAIR is that portion of the fabr ication process that requires the addition of polyester resin materials to portions of a previously fabricated product in order to mend damage. (33) RESIN is any thermosetting polyeste r resin, which is used to encapsulate and bind together reinforcement fibers and/or fillers in the formulation of composite materials. (34) RESIN IMPREGNATOR is a m echanical nonatomizing composite materials application technique in which fiber reinforcement is saturated
with resins in a controlled ratio fo r each specific composite product. (35) SOLID SURFACE RESINS are resins, which are used without gel coats to fabricate homogenous solid surface products. (36) SPECIALITY GEL COATS are gel co ats which are used in conjunction with fire retardant, corrosion resi stant or high-strength materials. (37) THERMOSET POLYESTER RESIN is a resin material that undergoes a chemical reaction during curi ng and can not be reshaped. (38) TOUCH-UP is that portion of the pr ocess that is necessary to cover minor imperfections. (39) TUB/SHOWER RESINS are dicycl opentadiene (DCPD) resins, along with orthophthalate and isophthalate resins, which are used to fabricate bathware products. (40) VAPOR SUPPRESSANT is a wax substance added to resin for the purpose of forming a layer on the surface of the resin while it is curing and
minimize the outward diffusion of m onomer vapor into the atmosphere. (41) VAPOR SUPPRESSED RESIN (VSR) is a polyester resin material which contains additives to reduce VOC evaporation loss to less than fifty (50) grams per square meter of surface area as determined and certified by
resin manufacturers. (42) VOLATILE ORGANIC COMPOUND ( VOC) is as defined in Rule 102.

(c) Requirements (1) Application Techniques (A) Except for gel coat s, effective July 1, 2002, a person shall not apply any resin materials to an open mold surface unless one of theRule 1162 (Cont.) (Amended July 8, 2005)

1162-5 following nonatomizing application techniques is used and operated according to the operating procedure specified by the equipment manufacturer: (i) Nonatomizing Spray Applica tion Technique, as defined in paragraph (b)(22); (ii) Flowcoaters; (iii) Pressure-Fed Rollers; (iv) Resin Impregnators; (v) Hand Lay-up Applications; or (vi) Other nonatomizing applic ation techniques which are approved in writing by the Executive Officer, CARB, and U.S. EPA, as having similar emission reduction
efficiencies. (B) Effective July 1, 2005, an opera tor shall not apply gel coat materials to an open molding surf ace unless one of the following application techniques is used and operated according to the operating procedure specified by the equipment manufacturer: (i) Any nonatomizing application technique listed under subparagraph (c)(1)(A); (ii) Air-Assisted Airless Spray; (iii) Electrostatic Attraction; or (iv) High-Volume, Low-Pressure (HVLP)

(2) Material Requirements (A) A person shall not use polyester resin material in an open molding system, which has a monomer c ontent in excess of the limits specified in the following Table.Rule 1162 (Cont.) (Amended July 8, 2005)

1162-6 Monomer Percentage by Weight as Applied Polyester Resin Materials
Prior to 11-09-2001 Current Limits

Clear Gel Coat
For Marble Resins
For Other Resins 50

-

- - 40
44 Pigmented Gel Coat
White and Off White
Non-White
Primer Specialty Gel Coats 45

-

-

-

- - 30
37
28
48 General Purpose Resin
Marble Resins

Solid Surface Resins
Tub/Shower Resins
Lamination Resins

Others 35

-

-

-

-

- - 10 or (32 % as supplied, no fillers)
17
24 or (35 % as supplied, no fillers)
31 or (35 % as supplied, no fillers)
35
Fire Retardant Resin
Corrosion Resistant Resin High Strength Resin 42
48
48 38
48
40

(B) Composite operations that are al so subject to Rule 1132 and have elected to comply under the alternative compliance option specified in paragraph (d)(1) of Rule 1132, shall comply with the July 1, 2002, monomer content requirements of subparagraph (c)(2)(A) on January 1, 2002. (C) Effective July 1, 2002, a person sh all not apply to an open molding system any tub/shower polyester resin material unless all the applied resin material is vapor suppressed. (3) Process Requirements (A) A person shall not operate a closed molding system, unless the weight loss of polyester resin ma terials during polymerization is less than four (4) percent.Rule 1162 (Cont.) (Amended July 8, 2005)

1162-7 (B) Until July 1, 2002, in lieu of usi ng resins that comply with the monomer content requirements of subparagraph (c)(2)(A), a person may use a vapor suppressed resin, provided the weight loss from
VOC emissions does not exceed fi fty (50) gram per square meter of exposed surface area dur ing resin polymerization. (C) A person shall not perform a pultrusion operatio n, unless wet-out baths are covered except for 18 inches from the exit of the bath to the die. The weight loss of pol yester resin materials during polymerization shall be less than three (3) percent in a pultrusion operation. (4) Notwithstanding the requirements sp ecified in paragra ph (c)(1), a person may perform touch-up and repair usi ng a hand-held spray gun which has a container for gel coat or resin as part of the gun. (5) Any person processing polyester resin materials and any other VOCcontaining materials shall keep these ma terials in closed containers except when filling or emptying the container. (6) Solvent cleaning of application equipment, parts, products, tools, machinery, equipment, general working areas, and the storage and disposal of VOC-containing materials used in cleaning operations shall comply with Rule 1171 - Solvent Cleaning Operations.

(d) Control Equipment In lieu of complying with the requirements of subdivision (c), a person may install and operate an emission control system wh ich has an overall capture and control efficiency of 90 percent or more on a mass basis, as appr oved by the Executive
Officer.

(e) Recordkeeping Requirements (1) A person subject to the provisions of this rule shall maintain daily records. Alternatively, records may be kept on a monthly basis provided the polyester resin process or equipment is not subject to a daily production limit or daily VOC limit in any applicable District rule(s) or permit(s). Such records shall be made available to the Executive Officer's designee upon request and shall be ke pt for not less than tw o years. The records
shall contain:Rule 1162 (Cont.) (Amended July 8, 2005)

1162-8 (A) The type of the nonatomizing, or other in the case of gel coat, application technique(s) used, manufacturer’s name, and the records of the fluid tip pressure calibration as specified by the manufacturer; (B) The manufacturer's name, the t ype and amount of each of the polyester resin materials used; an d the weight (in percent) of monomer for all polyester resin materials and filler(s). If VOC-containing materials are adde d to the polyester resin, the amount of VOC-containing material s, in grams, and the VOC content in grams per liter, of VOC-containing materials; (C) Certification of Analysis from the resin manufacture(s) to verify that all the applied tub/show er resin materials are vapor suppressed; and (D) For closed-mold and pultrusi on systems, the weight loss (in percent) of polyester resins materials for each application. (2) Records for cleaning solvents s ubject to Rule 1171 - Solvent Cleaning Operations shall be maintained pursuant to Rule 109. (3) Any person using an emissions cont rol system as a means of complying with this rule shall maintain daily records of all key system parameters, including hours of operation, temperatur es, pressures and fl ow rates, that are necessary to ensure cont rol efficiency requirements.

(f) Test Methods and Procedures The following test methods and procedures shall be used to determine compliance with this rule. Other appli cable test methods may be us ed if they are determined to be equivalent and approved in wri ting by the Executive Officer, the California
Air Resources Board and the U.S. Environmental Protection Agency. (1) Determination of VOC Content of VOC- Containing Materials (A) U.S. EPA Method 24 - Determinati on of Volatile Matter Content, Water Content, Density Volume Solids, and Weight Solids of Surface Coating. (B) District Methods 302 and 303 –Determination of Exempt Compounds. (C) District Method 304-Determination of Volatile Organic Compounds (VOCs) in Various Materi als, or any other applicableRule 1162 (Cont.) (Amended July 8, 2005)

1162-9 method approved by the US Environmental Protection Agency, California Air Resources Board, and the SCAQMD. (D) District Method 309 – Determinat ion of the Weight Loss of Polyester Resin Materials. (E) District Method 312 – Determinati on of the monomer content of Polyester Resin Materials. (F) District Method 313 – Determination of Volatile Organic Compounds by Gas Chromatography/Mass Spectrometry. (2) Determination of Efficiency of Emission Control System (A) The capture efficiency of an emission control system shall be determined by verifying the use of a Permanent Total Enclosure (PTE) and 100% capture efficien cy as defined by U.S. EPA
Method 204 “Criteria for and Ve rification of a Permanent or Temporary Total Enclosure.” Alte rnatively, if a U.S. EPA Method 204 defined PTE is not employed, capture efficiency shall be determined using a minimum of three sampling runs subject to data quality criteria presented in U.S. EPA technical guidance document “Guidelines for Determination Capture Efficiency, January 9, 1995.” Individual capture e fficiency test runs subject to the U.S. EPA technical guideli nes shall be determined by: (i) The Temporary Total Enclos ure (TTE) approach of U.S. EPA Method 204 through 204F; or (ii) The District “Protocol for Determination of Volatile organic Compounds (VOCs) Capture efficiency.” (B) The efficiency of the control device and the VOC content
measured and calculated as carbon in the control device exhaust gases shall be determined by U. S. EPA's Test Method 18, or Air Resources Board (ARB) Method 422 for the determination of emissions of Exempt Compounds and U.S. EPA's Test Methods 25, 25A, District Method 25.1 for the determination of Total Gaseous Non-Methane Organic Emi ssions as Carbon, or District
Method 25.3 for the determination of Low Concentration NonMethane Non-Ethane Organic Compound Emissions from Clean Fueled Combustion Sources, as applicable. (C) The overall efficiency of an emission control system shall be determined using the following equation:Rule 1162 (Cont.) (Amended July 8, 2005)

1162-10 Overall Efficiency = (Capture Efficiency) x (Cont rol Equipment Efficiency)/100

(g) Alternative Compliance Option A person may use alternative application pr ocesses and materials to those listed in paragraphs (c)(1) and (c)(2) provided th ey result in equivalent VOC emissions and are approved in writing by the Ex ecutive Officer, CARB and U.S. EPA. (h) Exemption The requirement of subparagraph (c)(1) (B) shall not apply to pin striping provided that the total amount of gel coat materials sprayed does not exceed one (1) gallon per day per facility.