Federal regulations · Through 2026-08-25 · Newer source version available

40 CFR Table 1A to Subpart DDDD of Part 63: Table 1A to Subpart DDDD of Part 63—Production-Based Compliance Options

For the following process units . . . You must meet the following production-based compliance option (total HAP a basis) . . .
(1) Fiberboard mat dryer heated zones (at new affected sources only) 0.022 lb/MSF 1⁄2″.
(2) Green rotary dryers 0.058 lb/ODT.
(3) Hardboard ovens 0.022 lb/MSF 1⁄8″.
(4) Press predryers (at new affected sources only) 0.037 lb/MSF 1⁄2″.
(5) Pressurized refiners 0.039 lb/ODT.
(6) Primary tube dryers 0.26 lb/ODT.
(7) Reconstituted wood product board coolers (at new affected sources only) 0.014 lb/MSF 3⁄4″.
(8) Reconstituted wood product presses 0.30 lb/MSF 3⁄4″.
(9) Softwood veneer dryer heated zones 0.022 lb/MSF 3⁄8″.
(10) Rotary strand dryers 0.18 lb/ODT.
(11) Secondary tube dryers 0.010 lb/ODT.
a Total HAP, as defined in § 63.2292, includes acetaldehyde, acrolein, formaldehyde, methanol, phenol, and propionaldehyde. lb/ODT = pounds per oven-dried ton; lb/MSF = pounds per thousand square feet with a specified thickness basis (inches). Section 63.2262(j) shows how to convert from one thickness basis to another.
Note: There is no production-based compliance option for conveyor strand dryers.

Where this section sits in the code

Title 40—Protection of Environment
CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY
SUBCHAPTER C—AIR PROGRAMS
PART 63—NATIONAL EMISSION STANDARDS FOR HAZARDOUS AIR POLLUTANTS FOR SOURCE CATEGORIES
Subpart DDDD—National Emission Standards for Hazardous Air Pollutants: Plywood and Composite Wood Products

For the following process units . . . You must meet the following production-based compliance option (total HAP a basis) . . .

(1) Fiberboard mat dryer heated zones (at new affected sources only) 0.022 lb/MSF 1⁄2″.

(2) Green rotary dryers 0.058 lb/ODT.

(3) Hardboard ovens 0.022 lb/MSF 1⁄8″.

(4) Press predryers (at new affected sources only) 0.037 lb/MSF 1⁄2″.

(5) Pressurized refiners 0.039 lb/ODT.

(6) Primary tube dryers 0.26 lb/ODT.

(7) Reconstituted wood product board coolers (at new affected sources only) 0.014 lb/MSF 3⁄4″.

(8) Reconstituted wood product presses 0.30 lb/MSF 3⁄4″.

(9) Softwood veneer dryer heated zones 0.022 lb/MSF 3⁄8″.

(10) Rotary strand dryers 0.18 lb/ODT.

(11) Secondary tube dryers 0.010 lb/ODT.

a Total HAP, as defined in § 63.2292, includes acetaldehyde, acrolein, formaldehyde, methanol, phenol, and propionaldehyde. lb/ODT = pounds per oven-dried ton; lb/MSF = pounds per thousand square feet with a specified thickness basis (inches). Section 63.2262(j) shows how to convert from one thickness basis to another.

Note: There is no production-based compliance option for conveyor strand dryers.

Collected 2026-08-27T02:26:04Z. Source file · JSON

Browse this collection