Record Display for the EPA National Library Catalog

RECORD NUMBER: 35 OF 86

OLS Field Name OLS Field Data
Main Title Exposure Indices Consideration for Rural Ozone Relationships in the United States.
Author Lee, E. H. ; Tingey, D. T. ; Hogsett., W. E. ;
CORP Author NSI Technology Services Corp., Corvallis, OR.;Corvallis Environmental Research Lab., OR.
Publisher c1990
Year Published 1990
Report Number EPA-68-C8-0006; EPA/600/D-90/192;
Stock Number PB91-136598
Additional Subjects Ozone ; Rural areas ; Air pollution monitoring ; United States ; Exposure ; Standards ; Applications of mathematics ; Air quality ; Air pollution effects(Plants) ; Crops ; Reprints ;
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB91-136598 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/13/1991
Collation 8p
Abstract
The objective of the study is to develop an ambient ozone air quality indicator for examining O3 and its effects on vegetation and forests. The scientific and technical information on O3 and its effects on vegetation and natural ecosystems indicate that a secondary ambient air quality standard is needed that correlates well with both short- and long-term exposures. Air quality analysis of hourly ozone monitoring data from the National Air Data Branch for 82 non-urban sites in the United States was performed to identify the relationships of various ozone exposure indices. A three-month maximum period between April and September is adequate for capturing about 70% of the hourly concentrations of 0.06 ppm or higher. The cumulative censored indices that adequately predict crop loss are strongly correlated with a long-term single peak index. These indices that integrate hourly concentrations of 0.06 (or 0.7) ppm or higher have potential for setting a standard that minimizes the risk of adverse effects.