A hi-vol sampler draws air at an average rate of 70 ft3/min. If the measured particle concentration is 200 ~g/m3 and the hi-vol was operated for 12 hours, what was the weight of dust on the filter?
Washington, DC, offices and industries have introduced "flex-time" in an effort to mitigate traffic jams and air pollution. Flex-time allows the 8-hour workday to begin as early as 7 A.M. and last as...
Plot the ambient lapse rate given the following temperature sounding: What type of plume would you expect if the exit temperature of the plume at the stack were 15°C and the smokestack were 40 m...
