EPA Clean Air Scientific Advisory Committee (CASAC)

Nitrogen Oxides and Sulfur Oxides Monitoring and Methods

EPA Designated Federal Officer (DFO):Edward Hanlon

Holly Stallworth
Responsible Committee/Panel:CASAC Air Monitoring and Methods Subcommittee
A list of members can be found in the final report included in the Advisory Activity linked to this panel or committee.

See EPA’s PDF page to learn more about PDF files.

EPA’s Office of Air and Radiation (OAR) has requested CASAC advice on its plans for oxides of nitrogen (NOx) and sulfur oxides (SOx) Monitoring and Network Design.

OAR requested CASAC review candidate methods for assessing levels of nitrogen and sulfur deposition; assessing constituents such as particulate sulfate, total oxidized nitrogen (NOy), sulfur dioxide (SO2), and ammonia gas and ammonia ion combined (NHx) in the assessment of an Atmospheric Acidification Potential Index; and the potential network design for a monitoring system in support of a secondary NOx/SOx National Ambient Air Quality Standard.
Agency Review Document(s):

PDF for Characterizing Emissions, Air Quality, Deposition and Water Quality. (PDF, 98 pp., 10,557,895 bytes)

PDF for Ambient Air Monitoring For A New Secondary NAAQS For 2 Oxides of Nitrogen and Sulfur. (PDF, 20 pp., 614,650 bytes)

PDF for Air Quality Observation Systems in the United States - Draft Report. (PDF, 81 pp., 1,286,053 bytes)

PDF for Federal Reference Methods for NOy and p-SO4 for the New Combined NOx and SOx Secondary NAAQS - Research Plan - January 20, 2011. (PDF, 12 pp., 229,539 bytes)