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	Ben's Guide to U.S. Government

e-CFR Data is current as of February 6, 2009

TITLE 40--Protection of Environment

CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY

SUBCHAPTER C--AIR PROGRAMS

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

§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 nitrogen dioxide.

§50.12

National primary and secondary ambient air quality standards for lead.

§50.13

National primary and secondary ambient air quality standards for PM_2.5.

§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.

Appendix

Appendix A to Part 50 --Reference Method for the Determination of Sulfur Dioxide in the Atmosphere (Pararosaniline Method)

Appendix

Appendix B to Part 50 --Reference Method for the Determination of Suspended Particulate Matter in the Atmosphere (High-Volume Method)

Appendix

Appendix C to Part 50 --Measurement Principle and Calibration Procedure for the Measurement of Carbon Monoxide in the Atmosphere (Non-Dispersive Infrared Photometry)

Appendix

Appendix D to Part 50 --Measurement Principle and Calibration Procedure for the Measurement of Ozone in the Atmosphere

Appendix

Appendix E to Part 50 --[Reserved]

Appendix

Appendix F to Part 50 --Measurement Principle and Calibration Procedure for the Measurement of Nitrogen Dioxide in the Atmosphere (Gas Phase Chemiluminescence)

Appendix

Appendix G to Part 50 --Reference Method for the Determination of Lead in Suspended Particulate Matter Collected From Ambient Air

Appendix

Appendix H to Part 50 --Interpretation of the 1-Hour Primary and Secondary National Ambient Air Quality Standards for Ozone

Appendix

Appendix I to Part 50 --Interpretation of the 8-Hour Primary and Secondary National Ambient Air Quality Standards for Ozone

Appendix

Appendix J to Part 50 --Reference Method for the Determination of Particulate Matter as PM₁₀in the Atmosphere

Appendix

Appendix K to Part 50 --Interpretation of the National Ambient Air Quality Standards for Particulate Matter

Appendix

Appendix L to Part 50 --Reference Method for the Determination of Fine Particulate Matter as PM_2.5in the Atmosphere

Appendix

Appendix M to Part 50 --[Reserved]

Appendix

Appendix N to Part 50 --Interpretation of the National Ambient Air Quality Standards for PM_2.5

Appendix

Appendix O to Part 50 --Reference Method for the Determination of Coarse Particulate Matter as PMin the Atmosphere

Appendix

Appendix P to Part 50 --Interpretation of the Primary and Secondary National Ambient Air Quality Standards for Ozone

Appendix

Appendix Q to Part 50 --Reference Method for the Determination of Lead in Particulate Matter as PMCollected From Ambient Air

Appendix

Appendix R to Part 50 --Interpretation of the National Ambient Air Quality Standards for Lead