SOUTH COAST AIR QUALITY MANAGEMENT DISTRICT
(Adopted March 6, 1987)(Amended April 3, 1987)(Amended August 3, 1990)
(Amended December 7, 1990) (Amended August 2, 1991)(Amended July 10, 1992)
(Amended May 13, 1994)
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 commercial, military, or industrial use including, but not limited to, boats, tubs, pools, shower enclosures, spas, bathroom fixtures, jigs, tools, molds, air pollution control equipment, sewage treatment equipment, storage tanks, transportation parts, and other industrial and consumer products.
(b) Definitions
For the purpose of this rule, the following definitions shall apply:
(A) Group I
chlorodifluoromethane (HCFC-22)
dichlorotrifluoroethane (HCFC-123)
tetrafluoroethane (HFC-134a)
dichlorofluoroethane (HCFC-141b)
chlorodifluoroethane (HCFC-142b)
trifluoromethane (HFC-23)
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)
cyclic branched, or linear, completely fluorinated alkanes
cyclic branched, or linear, completely fluorinated ethers with no unsaturations
cyclic, branched, or linear, completely fluorinated tertiary amines with no unsaturations
sulfur-containing perfluorocarbons with no unsaturations and with sulfur bonds only to carbon and fluorine
(B) Group II
methylene chloride
carbon tetrachloride
1,1,1-trichloroethane (methyl chloroform)
trichlorotrifluoroethane (CFC-113)
dichlorodifluoromethane (CFC-12)
trichlorofluoromethane (CFC-11)
dichlorotetrafluoroethane (CFC-114)
chloropentafluoroethane (CFC-115)
Use of Group II compounds may be restricted in the future because they are either toxic, potentially toxic, or upper-atmosphere ozone depleters, or cause other environmental impacts. Specifically, the District Board has established a policy to phase out chlorofluorocarbons (CFCs), methyl chloroform (1,1,1-trichloroethane or TCA), and carbon tetrachloride by December 31, 1995.
(c) Requirements
(A) Material Requirements
A person shall not use a polyester resin material in a polyester resin operation which has a monomer content in excess of the limits specified in the Table below.
Polyester Resin Materials |
Monomer Content in Polyester Resin Materials as Applied (by Weight Percent) |
General Purpose Polyester Resin |
35 |
Corrosion-Resistant |
48 |
Fire Retardant |
42 |
High Strength |
48 |
Clear Gel Coat |
50 |
Pigmented Gel Coat |
45 |
(B) Process Requirements
(i) The weight loss of polyester materials shall be less than four (4) percent when a closed-mold system is used.
(ii) When a vapor suppressed resin is used, the weight loss from VOC emissions shall not exceed sixty (60) grams per square meter of exposed surface area during resin polymerization.
(iii) A pultrusion operation shall have covered wet-out baths. From the exit of the bath to the die all but 18 inches of the preform distance shall be enclosed to minimize air flow. The weight loss of polyester materials shall be less than three (3) percent in a pultrusion operation.
(d) Control Equipment
In lieu of complying with the requirements of paragraph (c)(1) and (c)(2), a person may install and operate an emission control system which is designed and operated in accordance with guidelines published in the 20th Edition of the Industrial Ventilation Manual by the American Conference of Governmental Industrial Hygienists for the collection of fugitive emissions from polyester resin materials, and which system is approved by the Executive Officer's designee, and has an overall capture and control efficiency of 90 percent or more on a mass basis.
(e) Recordkeeping Requirements
(A) The manufacturer's name, the type and amount of each of the polyester resin materials used; and
(B) The weight (in percent) of monomer for all polyester resin materials, and, if adding VOC-containing materials to the polyester resin, the amount of VOC-containing materials, in grams, and the VOC content in grams per liter, of VOC-containing materials; and
(C) For vapor suppressed resins, a certificate from a resin manufacturer for each resin type; and
(D) For closed-mold and pultrusion systems, the weight loss (in percent) of polyester resin materials for each application.
(f) Methods of Analysis
The VOC content of each of the polyester resin materials shall be determined by using USEPA Reference Method 24 (Determination of Volatile Matter Content, Water Content, Density Volume Solids, and Weight Solids of Surface Coating, Code of Federal Regulations Title 40, Appendix A, utilizing Procedure B of ASTM Method D2369), or the SCAQMD Method 304. The monomer content shall be determined by Method 312, and weight loss of polyester resin materials shall be determined by Method 309; and the exempt compound's content shall be determined by Methods 302 and 303 in the South Coast Air Quality Management District's (SCAQMD) Laboratory Methods of Analysis for Enforcement Samples.
(g) Test Methods
(1) 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 USEPA's Test Method 18, or Air Resources Board (ARB) Method 422 for the determination of emissions of Exempt Compounds and USEPA's Test Methods 25, 25A, or SCAQMD's Method 25.1 (Determination of Total Gaseous Non-Methane Organic Emissions as Carbon) for the determination of total organic compound emissions. Emissions determined to exceed any limits established by this rule through the use of any of the above-referenced test methods shall constitute a violation of the rule.
(2) The following classes of compounds: cyclic, branched, or linear, completely fluorinated alkanes; cyclic, branched, or linear, completely fluorinated ethers with no unsaturations; cyclic, branched, or linear, completely fluorinated tertiary amines with no unsaturations; and sulfur-contained perfluorocarbons with no unsaturations and with sulfur bonds only to carbon and fluorine, will be analyzed as exempt compounds for compliance with subdivision (e) at such time manufacturers specify which individual compounds are used in the coating formulations and identify the test methods, which, prior to such analysis, have been approved by the USEPA and the SCAQMD, that can be used to quantify the amounts of each exempt compound.
(h) Exemptions