U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 63Subpart IIIII - Subpart IIIII—National Emission Standards for Hazardous Air Pollutants for Mercury Cell Chlor-Alkali Plants

WHAT THIS SUBPART COVERS
§ 63.8180 - What is the purpose of this subpart?
§ 63.8182 - Am I subject to this subpart?
§ 63.8184 - What parts of my plant does this subpart cover?
§ 63.8186 - When do I have to comply with this subpart?

EMISSION LIMITATIONS AND WORK PRACTICE STANDARDS
§ 63.8190 - What emission limitations must I meet?
§ 63.8192 - What work practice standards must I meet?

OPERATION AND MAINTENANCE REQUIREMENTS
§ 63.8222 - What are my operation and maintenance requirements?
§ 63.8226 - What are my general requirements for complying with this subpart?

INITIAL COMPLIANCE REQUIREMENTS
§ 63.8230 - By what date must I conduct performance tests or other initial compliance demonstrations?
§ 63.8232 - What test methods and other procedures must I use to demonstrate initial compliance with the emission limits?
§ 63.8234 - What equations and procedures must I use for the initial compliance demonstration?
§ 63.8236 - How do I demonstrate initial compliance with the emission limitations and work practice standards?

CONTINUOUS COMPLIANCE REQUIREMENTS
§ 63.8240 - What are my monitoring requirements?
§ 63.8242 - What are the installation, operation, and maintenance requirements for my continuous mercury monitoring systems?
§ 63.8243 - What equations and procedures must I use to demonstrate continuous compliance?
§ 63.8244 - How do I monitor and collect data to demonstrate continuous compliance?
§ 63.8246 - How do I demonstrate continuous compliance with the emission limitations and work practice standards?
§ 63.8248 - What other requirements must I meet?

NOTIFICATION, REPORTS, AND RECORDS
§ 63.8252 - What notifications must I submit and when?
§ 63.8254 - What reports must I submit and when?
§ 63.8256 - What records must I keep?
§ 63.8258 - In what form and how long must I keep my records?

OTHER REQUIREMENTS AND INFORMATION
§ 63.8262 - What parts of the General Provisions apply to me?
§ 63.8264 - Who implements and enforces this subpart?
§ 63.8266 - What definitions apply to this subpart?
Appendix - Table 1 to Subpart IIIII of Part 63—Work Practice Standards—Design, Operation, and Maintenance Requirements
Appendix - Table 2 to Subpart IIIII of Part 63—Work Practice Standards—Required Inspections
Appendix - Table 3 to Subpart IIIII of Part 63—Work Practice Standards—Required Actions for Liquid Mercury Spills and Accumulations and Hydrogen and Mercury Vapor Leaks
Appendix - Table 4 to Subpart IIIII of Part 63—Work Practice Standards—Requirements for Mercury Liquid Collection
Appendix - Table 5 to Subpart IIIII of Part 63—Required Elements of Floor-Level Mercury Vapor Measurement and Cell Room Monitoring Plans
Appendix - Table 6 to Subpart IIIII of Part 63—Examples of Techniques for Equipment Problem Identification, Leak Detection and Mercury Vapor
Appendix - Table 7 to Subpart IIIII of Part 63—Required Elements of Washdown Plans
Appendix - Table 8 to Subpart IIIII of Part 63—Requirements for Cell Room Monitoring Program
Appendix - Table 9 to Subpart IIIII of Part 63—Required Records for Work Practice Standards
Appendix - Table 10 to Subpart IIIII of Part 63—Applicability of General Provisions to Subpart IIIII
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