Title 40--Protection of Environment

CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY

PART 50--NATIONAL PRIMARY AND SECONDARY AMBIENT AIR QUALITY STANDARDS

TEXT PDF50.1 Definitions.
TEXT PDF50.2 Scope.
TEXT PDF50.3 Reference conditions.
TEXT PDF50.4 National primary ambient air quality standards for sulfur oxides (sulfur dioxide).
TEXT PDF50.5 National secondary ambient air quality standard for sulfur oxides (sulfur dioxide).
TEXT PDF50.6 National primary and secondary ambient air quality standards for PM10.
TEXT PDF50.7 National primary and secondary ambient air quality standards for particulate matter.
TEXT PDF50.8 National primary ambient air quality standards for carbon monoxide.
TEXT PDF50.9 National 1-hour primary and secondary ambient air quality standards for ozone.
TEXT PDF50.10 National 8-hour primary and secondary ambient air quality standards for ozone.
TEXT PDF50.11 National primary and secondary ambient air quality standards for nitrogen dioxide.
TEXT PDF50.12 National primary and secondary ambient air quality standards for lead.

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