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Table 1D to Subpart DDDD of Part 63—Compliance Options Applicable On and After July 6, 2029, for Direct Wood-Fired PCWP Dryers at Affected Sources That Commenced Construction or Reconstruction On or Before May 18, 2023

Compliance Options Applicable On and After July 6, 2029, for Direct Wood-Fired PCWP Dryers at Affected Sources That Commenced Construction or Reconstruction On or Before May 18, 2023

  1. CFR
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  3. Title 40
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  5. Chapter I
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  7. Part 63
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  9. Subpart DDDD
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  11. Subject Group Other Requirements and Information
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  13. Appendix Table 1D to Subpart DDDD of Part 63
CorpusDaily eCFR
Displayed edition2026-07-09
Last updated2026-07-09

Table 1D to Subpart DDDD of Part 63—Compliance Options Applicable On and After July 6, 2029, for Direct Wood-Fired PCWP Dryers at Affected Sources That Commenced Construction or Reconstruction On or Before May 18, 2023

Table 1D to Subpart DDDD of Part 63—Compliance Options Applicable On and After July 6, 2029, for Direct Wood-Fired PCWP Dryers at Affected Sources That Commenced Construction or Reconstruction On or Before May 18, 2023

For the following types of direct wood-fired PCWP dryers . . .You must meet the PM

(HAP metal) limit		You must meet the Hg limitYou must meet the HCl limitYou must meet the PAH limit
Rotary strand dryer9.9E-02 lb/ODT or 3.6E-03 gr/dscf1.7E-05 lb/ODT or 8.4E-04 mg/dscm5.8E-03 lb/ODT or 1.5E-01 mg/dscm1.1E-04 lb/ODT or 9.9E-03 mg/dscm.
Green rotary dryer2.9E-01 lb/ODT or 5.2E-03 gr/dscf1.5E-05 lb/ODT or 1.3E-03 mg/dscm1.1E-02 lb/ODT or 1.7 mg/dscm3.2E-04 lb/ODT or 4.2E-02 mg/dscm.
Dry rotary dryer6.5E-01 lb/ODT or 9.8E-02 gr/dscf1.0E-05 lb/ODT or 8.4E-04 mg/dscm1.1E-03 lb/ODT or 9.0E-02 mg/dscm4.6E-05 lb/ODT or 4.1E-03 mg/dscm.
Primary tube dryer or secondary tube dryer3.1E-01 lb/ODT or 3.1E-03 gr/dscf3.9E-05 lb/ODT or 1.6E-03 mg/dscm6.4E-03 lb/ODT or 7.4E-01 mg/dscm3.0E-04 lb/ODT or 1.6E-03 mg/dscm.
Softwood veneer dryer heated zones7.2E-02 lb/MSF 3/8″ or 1.5E-02 gr/dscf5.8E-05 lb/MSF 3/8″ or 4.1E-02 mg/dscmNANA.
Notes: lb/ODT = pounds per oven dried ton, gr/dscf = grains per dry standard cubic foot, mg/dscm = milligrams per dry standard cubic meter. See § 63.2240(d)(3) for dioxin and furan TEQ limit for direct wood-fired green rotary dryers.

[91 FR 41451, July 6, 2026]