Page 89 - Fundamentals of Air Pollution 3E

60 4. Air Quality

2. Using the data in Fig. 4-1, draw the variation in concentration over the 6-hr period as it
would appear using sampling and analytical procedures which integrate the concentrations
arriving at the receptor over 30 min and 2 hr, respectively.
3. Sketch the appearance of a stripchart record measuring one pollutant for a week to show
the weekday-weekend cycle.
4. Draw a chart showing the most probable trend of the concentration of airborne particles
of horse manure in the air of a large mid western U.S. city from 1850 to 1950.
5. Describe an air quality measurement system used to assess the levels and types of aeroal-
lergens.
6. Using the data of Fig. 4-8, determine the frequency with which a 30-min average SO 2
concentration of 0.2 ppm would probably have been exceeded at site 26428007 HOI in St.
Louis, Missouri in 1980.
7. Prepare a table describing air quality levels in your community, or in the nearest community
to you that has such data available.
8. If you were to prepare a figure representing the relationship between air quality levels
and the effects caused by these levels, what changes would you make in Fig. 4-10?
9. Discuss the extent and usefulness of dissemination by the media of the PSI values in the
communities in which you have lived.