Record Display for the EPA National Library Catalog


Main Title Alternate Forms of the Ambient Air Quality Standard for Photochemical Oxidants.
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Strategies and Air Standards Div.
Year Published 1978
Stock Number PB83-116756
Additional Subjects Oxidizers ; Standards ; Air pollution ; Concentration(Composition) ; Reviews ; Photochemistry ; Assessments ; Substitutes ; Air quality
Library Call Number Additional Info Location Last
NTIS  PB83-116756 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 23p
Review of the primary and secondary ambient air quality standard for photochemical oxidants including an examination of the overall form of the standard as well as a consideration of the appropriateness of the concentration level and averaging time. By using the annual second highest hourly average, an apparently simple means is available for determining compliance. However, analysis shows that there are problems of sufficient importance that alternate forms must be given serious consideration. To ensure compliance with the .08 ppm standard precursor emission levels must be controlled to the point that .08 ppm is never exceeded, which is not a feasible expectation. Thus the current standard is more severe than is apparent from first inspection. A proposed form for assessing oxidant measurements is suggested.