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Metropolitan
St. Louis PM2.5 Saturation Monitoring Study
Prepared by:
Air Quality Laboratory, Washington University in St. Louis, MO
Project Lead: Jay R. Turner, D.Sc.
Abstract
Executive Summary
In July 1997 the U.S. Environmental Protection Agency promulgated revisions
to the National Ambient Air Quality Standard for Particulate Matter (PM).
Standards were added for the 24-hour average and annual-average mass concentrations
of ambient particulate matter with aerodynamic diameter smaller than 2.5
micrometers (PM2.5). Prior to the CY 1999 start-up of a regulatory monitor
network to determine compliance with this standard, PM2.5 mass concentration
data for most urban airsheds was either sparse or nonexistent. The Metropolitan
St. Louis PM2.5 Saturation Monitoring Study was conducted by the Air Quality
Laboratory at Washington University during CY 1999 to support the Missouri
Department of Natural Resources (MDNR) in a variety of tasks related to
implementing the PM2.5 standard.2 The project goals included (but were
not limited to): elucidating spatial trends for PM2.5 mass concentrations
on the neighborhood- and urban/regional-scales; elucidating temporal trends
for PM2.5 mass concentrations over a period of approximately six months;
and investigating the relationships between PM2.5 and meteorological conditions.
For a full copy of
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