U.S. Code of Federal Regulations

Regulations most recently checked for updates: Mar 25, 2026

All TitlesTitle 40Chapter IPart 63Subpart DDD - Subpart DDD—National Emission Standards for Hazardous Air Pollutants for Mineral Wool Production

STANDARDS
§ 63.1178 - For cupolas, what standards must I meet?
§ 63.1179 - For curing ovens or combined collection/curing operations, what standards must I meet?
§ 63.1180 - When must I meet these standards?
§ 63.1175 - What is the purpose of this subpart?
§ 63.1176 - Where can I find definitions of key words used in this subpart?
§ 63.1177 - Am I subject to this subpart?

COMPLIANCE WITH STANDARDS
§ 63.1181 - How do I comply with the particulate matter standards for existing, new, and reconstructed cupolas?
§ 63.1182 - How do I comply with the carbon monoxide, carbonyl sulfide, hydrogen fluoride, and hydrogen chloride standards for existing, new, and reconstructed cupolas?
§ 63.1183 - How do I comply with the formaldehyde, phenol, and methanol standards for existing, new, and reconstructed combined collection/curing operations?

§ 63.1184 - What do I need to know about the design specifications, installation, and operation of a bag leak detection system?
§ 63.1185 - How do I establish the average operating temperature of an incinerator?
§ 63.1186 - How may I change the compliance levels of monitored parameters?
§ 63.1187 - What do I need to know about operations, maintenance, and monitoring plans?

PERFORMANCE TESTS AND METHODS
§ 63.1188 - What performance test requirements must I meet?
§ 63.1189 - What test methods do I use?
§ 63.1190 - How do I determine compliance?

NOTIFICATION, RECORDKEEPING, AND REPORTING
§ 63.1191 - What notifications must I submit?
§ 63.1192 - What recordkeeping requirements must I meet?
§ 63.1193 - What reports must I submit?

OTHER REQUIREMENTS AND INFORMATION
§ 63.1194 - Which general provisions apply?
§ 63.1195 - Who implements and enforces this subpart?
§ 63.1196 - What definitions should I be aware of?
§ 63.1197 - Startups and shutdowns.
§§ 63.1198-63.1199 - §[Reserved]
Appendix - Table 1 to Subpart DDD of Part 63—Applicability of General Provisions (40 CFR Part 63, Subpart A) to Subpart DDD of Part 63
Appendix - Table 2 to Subpart DDD of Part 63—Emissions Limits and Compliance Dates
Appendix Appendix A - Appendix A to Subpart DDD of Part 63—Free Formaldehyde Analysis of Insulation Resins by the Hydroxylamine Hydrochloride Method
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