Wood Building Products Surface Coating
Air Toxics Notebook
Wood Building Products Surface Coating
eCFR Subpart QQQQ 
[ecfr.gov]
The source category to which this subpart applies is:
surface coating of wood building products, which means the application of coatings using, for example, roll coaters or curtain coaters in the finishing or laminating of any wood building product that contains more than 50 percent by weight wood or wood fiber excluding the weight of any glass components, and is used in the construction, either interior or exterior, of a residential, commercial or institutional building.
The wood building products source category inlcues the subcategories:
1. doors, windows, and miscellaneous.
2. flooring
3. interior wall paneling and tileboard
4. other interior panels
5. exterior siding and primed doorskins
Applies to major sources of HAP that use 1,100 gallons or more per year of a coating to coat wood building products.
No
03/07/2022 - Proposed Rule
03/04/2019 - Final Rule
05/16/2018 - Proposed Rule
05/28/2003 - Final Rule
Title 129, Chapter 13, Section 002.69
Previously: Chapter 28, Section 001.75.
Sources are also responsible for ensuring they are in compliance with current federal requirements found for this subpart in the CFR.
NESHAP - 40 CFR Part 63
Subpart JJ - Wood Furniture Manufacturing
Subpart DDDD - Plywood & Composite Wood Products (VACATED)
Subpart QQQQQQ - Wood Preserving (area sources)
[ecfr.gov]EPA's Subpart QQQQ Website 
[epa.gov] - contains federal register notices and implementation tools