NESHAP: National Emission Standards for Hazardous Air Pollutants

Summary

Part 61 contains the original pollutant-specific NESHAP. Part 63 contains source-category standards, often called MACT standards for major sources and GACT standards for certain area sources. Both parts have General Provisions in Subpart A.

Applicability

Part 63 applicability usually turns on the source category and on whether the facility is a major source or an area source of HAP, as those terms are defined in the rule. Each subpart states which units are affected.

• 40 CFR 63.1Part 63 applicability
• 40 CFR 63.2Part 63 definitions (major / area source)

Requirements

Emission limits, operating limits, and work practice standards are set subpart by subpart.

Monitoring

Part 63 Subpart A sets general monitoring requirements.

• 40 CFR 63.8Monitoring requirements

Testing

Part 63 Subpart A sets general performance-testing requirements.

• 40 CFR 63.7Performance testing requirements

Recordkeeping

Part 63 Subpart A sets general recordkeeping and reporting requirements.

• 40 CFR 63.10Recordkeeping and reporting

Reporting

Initial notifications, notifications of compliance status, and periodic reports are addressed in Subpart A and each subpart.

• 40 CFR 63.9Notification requirements
• 40 CFR 63.10Recordkeeping and reporting

Definitions

General definitions are in Subpart A of each part.

• 40 CFR 63.2Part 63 definitions

Key subparts

Subparts commonly reviewed for industrial and oil and gas facilities. Not a complete list.

• Part 63 Subpart AGeneral Provisions
• Part 63 Subpart HHOil and natural gas production facilities
• Part 63 Subpart HHHNatural gas transmission and storage facilities
• Part 63 Subpart ZZZZStationary reciprocating internal combustion engines (RICE)
• Part 63 Subpart DDDDDIndustrial, commercial, and institutional boilers and process heaters (major sources)
• Part 63 Subpart JJJJJJIndustrial, commercial, and institutional boilers (area sources)

Official source

• 40 CFR Part 61 (eCFR)

  U.S. Environmental Protection Agency · 40 CFR Part 61

  Not yet reviewed
• 40 CFR Part 63 (eCFR)

  U.S. Environmental Protection Agency · 40 CFR Part 63

  Not yet reviewed