Code of Federal Regulations · Part

Part 50 — National Primary And Secondary Ambient Air Quality Standards

40 C.F.R. pt. 50

• § 50.1 Definitions
• § 50.2 Scope
• § 50.3 Reference Conditions
• § 50.4 National Primary Ambient Air Quality Standards For Sulfur Oxides (sulfur Dioxide)
• § 50.5 National Secondary Ambient Air Quality Standard For Sulfur Oxides (sulfur Dioxide)
• § 50.6 National Primary And Secondary Ambient Air Quality Standards For Pm10
• § 50.7 National Primary And Secondary Ambient Air Quality Standards For Pm2.5
• § 50.8 National Primary Ambient Air Quality Standards For Carbon Monoxide
• § 50.9 National 1-hour Primary And Secondary Ambient Air Quality Standards For Ozone
• § 50.10 National 8-hour Primary And Secondary Ambient Air Quality Standards For Ozone
• § 50.11 National Primary And Secondary Ambient Air Quality Standards For Oxides Of Nitrogen (with Nitrogen Dioxide As The Indicator)
• § 50.12 National Primary And Secondary Ambient Air Quality Standards For Lead
• § 50.13 National Primary And Secondary Ambient Air Quality Standards For Pm2.5
• § 50.14 Treatment Of Air Quality Monitoring Data Influenced By Exceptional Events
• § 50.15 National Primary And Secondary Ambient Air Quality Standards For Ozone
• § 50.16 National Primary And Secondary Ambient Air Quality Standards For Lead
• § 50.17 National Primary Ambient Air Quality Standards For Sulfur Oxides (sulfur Dioxide)
• § 50.18 National Primary Ambient Air Quality Standards For Pm2.5
• § 50.19 National Primary And Secondary Ambient Air Quality Standards For Ozone
• § 50.20 National Primary Ambient Air Quality Standards For Pm2.5
• § 50.21 National Secondary Ambient Air Quality Standards For Sulfur Oxides (sulfur Dioxide)