Emissions from Composites Open Molding Operations

• Order the ANSI/UEF open molding emission factor standard
• MACT & UEF Calculator
• Order the ANSI/UEF open molding emission factor standard
• ANSI process for updating the UEF system

Supporting documents for the UEF

• Resin Screen Test Report - Oct. 30, 2007
• General discussion on emission factors for open molding
• UEF technical report, glossary, examples
• Technical report for UEF for non-atomized gel coat
• Report and data on development of the UEF
• Controlled Spraying Handbook

UEF updates

• EPA clarification of MACT compliance for filled DCPD resin
• UEF Advisory - Aug. 2, 2006
• What is "non-atomized?"
• What is "filament application?"
• What is "centrifugal casting?"
• Open Molding Terms and Definitions

EPA and state acceptance of the UEF

• An EPA reference to the UEF. Another EPA reference.
• State acceptance
• Comparison of UEF and data from source tests
• Why emission factors are usually better than source tests

Test methods

• Vapor suppressed resins (.pdf, 72Kb)
• Emissions from open molding operations (.pdf, 204Kb)

Other emission estimates

• Organic peroxide catalysts used in open molding: Report; Discussion
• EPA/ORD 'FRP Model'
• Closed molding and other processes

Compliance with the many applicable local, state, and federal regulations is often a complex matter. Information or guidance offered by ACMA should never be used as a substitute for competent legal counsel. ACMA staff can recommend attorneys for members needing assistance in specific regulatory areas.