Special provisions were provided in the airborne toxic control measure (ATCM) for manufacturers of hardwood plywood, particleboard, and medium density fiberboard who plan to use no-added formaldehyde (NAF) based resins (section 93120.3(c)) or ultra-low-emitting formaldehyde (ULEF) resins (section 93120.3(d)). NAF-based resins are resins formulated with no added formaldehyde as part of the resin cross linking structure, and include resins made from soy, polyvinyl acetate, or methylene diisocyanate. ULEF resins are formaldehyde containing resins formulated such that the formaldehyde emissions from composite wood products are consistently below applicable Phase 2 emission standards.
