1162-1 (Adopted March 6, 1987)(Amended April 3, 1987)(Amen ded August 3, 1990) (Amended December 7, 1990) (Amended August 2, 1991) (Amended July 10, 1992) (Amended May 13, 1994)(Amended November 17, 2000)(A mended November 9, 2001)

(Amended July 11, 2003)(Amended July 9, 2004)(Amend ed July 8, 2005)

RULE 1162 POLYESTER RESIN OPERATIONS

(a) Applicability
This rule shall apply to all polyester resin operat ions that fabricate, rework, repair, or touch-up products for commercial, military, or i ndustrial use including, but not limited to, boats, tubs, pools, shower enclosures, spas, bathroom fixtures, jigs, tools, molds, building panels, air pollution contro l equipment, sewage treatment equipment, storage tanks, transportation parts, aut omotive, aircraft, and aerospace components, and other industrial and consumer produ cts.

(b) Definitions
For the purpose of this rule, the following definit ions shall apply: (1) AIR-ASSISTED AIRLESS SPRAY is a coating applica tion system in which the coating fluid is supplied to the gun unde r fluid pressure and air is combined at the spray cap. (2) CLOSED MOLDING SYSTEM is a method of fabricatin g composite parts by placing composite materials in a confining mold cavity and applying pressure and/or heat. (3) CORROSION-RESISTANT MATERIALS are polyester res in materials used to make products for corrosion resistant appli cations such as tooling, fuel or chemical tanks, boat hulls, pools and outdo or spas. (4) ELECTROSTATIC APPLICATION is charging of atomiz ed coating droplets for deposition to a grounded substrate by electrostatic attraction. (5) EXEMPT COMPOUND is as defined in Rule 102. (6) FIBER REINFORCEMENT MATERIALS are multifilament of glass or other fibrous materials such as, carbon, boron, met al 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 inert (non-VOC) mate rial, which may be added to the resin to enhance its mechanical proper ties 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 MATERIAL is a material f ormulated by adding compatible filler(s) to polyester resin mate rial(s). (10) FIRE RETARDANT MATERIALS are polyester resin m aterials used to make products that are resistant to flame or fire. (11) FLOWCOATER is a nonatomizing application techn ique of applying resins and gel coats to an open mold with a fluid n ozzle in a fan pattern with no air supplied to the nozzle. (12) GEL COAT is a thermosetting polyester resin su rface coating, either pigmented or clear, that provides a cosmetic enhanc ement and improves resistance to degradation from exposure to the elem ents. (13) GENERAL PURPOSE POLYESTER RESINS are resin mat erials that are not corrosion resistant, fire retardant, high stren gth, or gel coats. (14) HAND LAY-UP is a hand application technique of composite 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 co ating application system which is operated at air pressur es between 0.1 and 10 pounds per square inch gauge (psig) measured dynami cally at the center of the air cap and at the air horns. (16) HIGH-STRENGTH MATERIALS are polyester resins w hich have casting tensile strength of 10,000 psi or more and which ar e used for manufacturing of high performance boats and skis. (17) LAMINATION RESINS are orthophthalate, isophtha late and dicyclopentadiene (DCPD) resins which are used in c omposite system made of layers of reinforcement fibers and resins, such as in boat
fabrication. (18) MARBLE OR CULTURED RESINS are orthophthalate a nd modified acrylic isophthalate resins, which are designed for the fabrication of cast products, such as vanities. (19) MONOMER is a volatile organic compound that pa rtially combines with itself, or other similar compounds, by a cross-link ing reaction to become a part of the cured resin. Monomers include, 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 we ight of the monomer, divided by the weight of the polymer. (21) MONOMER PERCENT BY WEIGHT OF A FILLED RESIN AS APPLIED is the weight of the monomer, divided by th e weight of the polymer and filler(s). (22) NONATOMIZING SPRAY APPLICATION is any applicat ion technique in which resin flows from the applicator, in a stea dy and observable coherent flow, without droplets, for a minimum dist ance of three (3) inches from the applicator orifices. (23) OPEN MOLDING SYSTEM is a method of fabricating composite parts by applying gel coats, resins, fibers, and other compo site materials on an open mold using either hand lay-up or spray-up appl ications. (24) PIN STRIPING is a spray application technique used to apply one or more narrow bands, marks, or streaks of gel coat onto th e surface of an open mold of a composite product. (25) POLYESTER is a polymer of ester molecules, whi ch are formulated by
the reaction of an acid and an alcohol and linked t ogether by the ester linkages. (26) POLYESTER RESIN MATERIALS are polyester resins , such as isophthalic, orthophthalic, halogenated, bisphenol A, vinyl ester, or furan resins; cross-linking agents; catalysts; gel coats; inhibitors; accelerators; promoters; and any other material containing VOC us ed in polyester resin operations. (27) POLYESTER RESIN OPERATIONS fabricate, rework, repair, or touchup products for commercial, military, or industrial use by mixing, pouring, hand laying-up, impregnating, injecting, forming, w inding, spraying, and/or curing by using polyester resin materials. (28) POLYMER is a chemical compound, such as polyst yrene, comprised of a large number of chemical units (monomer) composed o f identical crosslinking groups, such as styrene. (29) PRESSURE-FED ROLLER is a fabric roller that is fed with continuous supply of catalyzed resins from a mechanical fluid pump. (30) PRIMER GEL COAT is gel coat which is used to c oat the surface of composite parts, prior to top-coat painting, for au tomotive, aerospace, marine and home building industries.Rule 1162 (Cont.) (Amended July 8, 2005)

1162-4 (31) PULTRUSION is a process where continuous rovin g strands are moved through a strand-tensioning device into a resin bat h for impregnation and then passed through a heated die for curing. (32) REPAIR is that portion of the fabrication proc ess that requires the addition of polyester resin materials to portions of a previ ously fabricated product in order to mend damage. (33) RESIN is any thermosetting polyester resin, wh ich is used to encapsulate and bind together reinforcement fibers and/or fille rs in the formulation of composite materials. (34) RESIN IMPREGNATOR is a mechanical nonatomizing composite materials application technique in which fiber rein forcement is saturated with resins in a controlled ratio for each specific composite product. (35) SOLID SURFACE RESINS are resins, which are use d without gel coats to fabricate homogenous solid surface products. (36) SPECIALITY GEL COATS are gel coats which are u sed in conjunction with fire retardant, corrosion resistant or high-st rength materials. (37) THERMOSET POLYESTER RESIN is a resin material that undergoes a chemical reaction during curing and can not be resh aped. (38) TOUCH-UP is that portion of the process that i s necessary to cover minor imperfections. (39) TUB/SHOWER RESINS are dicyclopentadiene (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 re sin while it is curing and minimize the outward diffusion of monomer vapor int o the atmosphere. (41) VAPOR SUPPRESSED RESIN (VSR) is a polyester re sin material which contains additives to reduce VOC evaporation loss t o less than fifty (50) grams per square meter of surface area as determine d 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 coats, effective July 1, 2002, a person shall not

apply any resin materials to an open mold surface u nless one of theRule 1162 (Cont.) (Amended July 8, 2005)

1162-5 following nonatomizing application techniques is us ed and operated according to the operating procedure speci fied by the equipment manufacturer: (i) Nonatomizing Spray Application Technique, as de fined in paragraph (b)(22); (ii) Flowcoaters; (iii) Pressure-Fed Rollers; (iv) Resin Impregnators; (v) Hand Lay-up Applications; or (vi) Other nonatomizing application techniques whic h 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 operator shall not a pply gel coat materials to an open molding surface unless one of the following application techniques is used and operated accordi ng to the operating procedure specified by the equipment manu facturer: (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 content in excess of th e 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 also subject to R ule 1132 and have elected to comply under the alternative compliance option specified in paragraph (d)(1) of Rule 1132, shall c omply with the July 1, 2002, monomer content requirements of subpa ragraph (c)(2)(A) on January 1, 2002. (C) Effective July 1, 2002, a person shall not appl y to an open molding system any tub/shower polyester resin material unle ss all the applied resin material is vapor suppressed. (3) Process Requirements (A) A person shall not operate a closed molding sys tem, unless the weight loss of polyester resin materials during pol ymerization is less than four (4) percent.Rule 1162 (Cont.) (Amended July 8, 2005)

1162-7 (B) Until July 1, 2002, in lieu of using resins tha t comply with the monomer content requirements of subparagraph (c)(2) (A), a person may use a vapor suppressed resin, provided the weig ht loss from VOC emissions does not exceed fifty (50) gram per square meter of exposed surface area during resin polymerization

. (C) A person shall not perform a pultrusion operati on, unless wet-out baths are covered except for 18 inches from the exi t of the bath to the die. The weight loss of polyester resin materi als during polymerization shall be less than three (3) percent in a pultrusion operation. (4) Notwithstanding the requirements specified in p aragraph (c)(1), a person may perform touch-up and repair using a hand-held spray gun which has a container for gel coat or resin as part of the gu n. (5) Any person processing polyester resin materials and any other VOCcontaining materials shall keep these materials in closed containers except when filling or emptying the container. (6) Solvent cleaning of application equipment, part s, products, tools, machinery, equipment, general working areas, and th e storage and disposal of VOC-containing materials used in cleani ng operations shall comply with Rule 1171 - Solvent Cleaning Operations

.
(d) Control Equipment In lieu of complying with the requirements of subdi vision (c), a person may install and operate an emission control system which has an overall capture and control efficiency of 90 percent or more on a mass basis, a s approved 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 bas is 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 Executi ve Officer's designee upon request and shall be kept 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 c ase of gel coat, application technique(s) used, manufacturer’s name, and the records of the fluid tip pressure calibration as sp ecified by the manufacturer; (B) The manufacturer's name, the type and amount of each of the polyester resin materials used; and the weight (in percent) of monomer for all polyester resin materials and fille r(s). If VOC-containing materials are added to the polyester resin, the amount of VOC-containing materials, in grams, and t he VOC content in grams per liter, of VOC-containing mater ials; (C) Certification of Analysis from the resin manufa cture(s) to verify that all the applied tub/shower resin materials are vapor suppressed; and (D) For closed-mold and pultrusion systems, the wei ght loss (in percent) of polyester resins materials for each app lication. (2) Records for cleaning solvents subject to Rule 1 171 - Solvent Cleaning Operations shall be maintained pursuant to Rule 109

. (3) Any person using an emissions control system as a means of complying with this rule shall maintain daily records of all key system parameters, including hours of operation, temperatures, pressur es and flow rates, that are necessary to ensure control efficiency requirem ents.

(f) Test Methods and Procedures The following test methods and procedures shall be used to determine compliance with this rule. Other applicable test methods may be used if they are determined to be equivalent and approved in writing by the Exe cutive Officer, the California
Air Resources Board and the U.S. Environmental Prot ection Agency. (1) Determination of VOC Content of VOC- Containing Mat erials (A) U.S. EPA Method 24 - Determination of Volatile Matt er Content, Water Content, Density Volume Solids, and Weight So lids of Surface Coating. (B) District Methods 302 and 303–Determination of Exemp t Compounds. (C) District Method 304-Determination of Volatile Organ ic Compounds (VOCs) in Various Materials, 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 – Determination of the Weight L oss of Polyester Resin Materials. (E) District Method 312 – Determination of the monomer content of Polyester Resin Materials. (F) District Method 313 – Determination of Volatile Org anic Compounds by Gas Chromatography/Mass Spectrometry. (2) Determination of Efficiency of Emission Control System (A) The capture efficiency of an emission control syste m shall be determined by verifying the use of a Permanent Tota l Enclosure (PTE) and 100% capture efficiency as defined by U.S . EPA
Method 204 “Criteria for and Verification of a Perm anent or Temporary Total Enclosure.” Alternatively, if a U.S . EPA Method 204 defined PTE is not employed, capture efficiency shall be determined using a minimum of three sampling runs s ubject to data quality criteria presented in U.S. EPA technical gu idance document “Guidelines for Determination Capture Effi ciency, January 9, 1995.” Individual capture efficiency tes t runs subject to the U.S. EPA technical guidelines shall be determin ed by: (i) The Temporary Total Enclosure (TTE) approach of U.S. EPA Method 204 through 204F; or (ii) The District “Protocol for Determination of Vo latile organic Compounds (VOCs) Capture efficiency.” (B) The efficiency of the control device and the VO C content
measured and calculated as carbon in the control de vice exhaust gases shall be determined by U.S. EPA's Test Method 18, or Air Resources Board (ARB) Method 422 for the determinat ion of emissions of Exempt Compounds and U.S. EPA's Test M ethods 25, 25A, District Method 25.1 for the determination of Total Gaseous Non-Methane Organic Emissions as Carbon, or District
Method 25.3 for the determination of Low Concentrat ion 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 (Control Equipment Effici ency)/100

(g) Alternative Compliance Option A person may use alternative application processes and materials to those listed in paragraphs (c)(1) and (c)(2) provided they result i n equivalent VOC emissions and are approved in writing by the Executive Office r, 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 material s sprayed does not exceed one (1) gallon per day per facility.