Record Display for the EPA National Library Catalog


Main Title A critical review of the Los Angeles County APCD method for simulating atmospheric oxidant based on smog chamber irradiation experiments /
Author Souten, David R.
Other Authors
Author Title of a Work
Hopper, Charlotte J.
Mueller, Ronald L.
Publisher U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards,
Year Published 1977
Report Number 75-07.3; EPA 909/5-77-002
OCLC Number 746153482
Library Call Number Additional Info Location Last
EKBD  EPA-909/5-77-002 Research Triangle Park Library/RTP, NC 08/15/2011
Collation 16 pages : illustrations ; 28 cm
Contents Notes
The information presented in this paper is directed to engineers and air pollution control officials who are involved in evaluating the usefulness of the Los Angeles County Air Pollution Control District's irradiation chamber transform oxidant prediction model. The Los Angeles County Air Pollution Control District has developed a modeling analysis which demonstrates that both the California and the Federal oxidant standards can be reached in the Los Angeles Basin by 1985. This modeling analysis is based on early irradiation chamber test data and involves a mathematical transform of these data to relate the chamber tests to the atmosphere. The only control needed to achieve the standards is that dictated by the California auto emission control program. This paper contains a critical review of the APCD modeling analysis. The authors of this paper have serious reservations concerning the use of these early irradiatoin test data to simulate atmospheric oxidant production, the method used to characterize ambient HC and NOX concentrations, and the transform equation used to relate test data to "worst case" atmospheric conditions. The authors conclude that the APCD transform model does not provide accurate estimates of future oxidant levels.