Gaseous Criteria Pollutant Monitoring as of June 24, 2009

This page last reviewed August 18, 2010

Parameter Measured Ozone Nitrogen Dioxide Carbon Monoxide Sulfur Dioxide Hydrogen Sulfide*
Sampling Schedule Continuous Hourly
Average
Continuous Hourly
Average
Continuous Hourly
Average
Continuous Hourly
Average
Continuous Hourly
Average
Number of ARB Sites37 15 9 4 0
Number of District Sites 139 91 68 33 13
Method Used By ARB Ultraviolet
Photometry
Gas Phase
Chemiluminescence
Non-Dispersive
Infrared Photometry
Ultraviolet
Fluorescence Detector
Thermal Oxidizer
with Ultraviolet
Fluorescence Detector
EPA Reference Method Ultraviolet
Photometry
Gas Phase
Chemiluminescence
Non-Dispersive
Infrared Photometry
Spectrophotometry
(Pararosaniline
Method)
Not Applicable
Data Availability ARB Planning and Technical Support Division, Aerometric Data
Analysis and Management System ADAM)
;
U.S. EPA Air Quality System (AQS)
Air Quality and Meteorological Information System (AQMIS)

*Hydrogen Sulfide is only a State criteria pollutant. A Federal standard has not been set.


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