Estimate the concentration of particulate matter (in ug/m3), a form of air pollu

Question

Estimate the concentration of particulate matter (in ug/m3), a form of air pollution, in the ambient air above the city of Baltimore, assuming the following data. The average annual wind velocity is 8.7 miles per hour and the assumed mixing height above the city is approximately 3500 ft. Also assume the city of Baltimore is 10 miles long and 10 miles wide. The annual quantity of particles discharged into the air (i.e., generated within the city of Baltimore from autos, industry, construction) is approximately one million tons. Assume the particulate matter generated is instantly and completely mixed with the air above the city immediately after generation and no particles are accumulating over time. Provide a diagram of the control volume in your answer, labeling all known and unknown inputs, outputs, and reactions (if necessary). Does this exceed the NAAQS PM10 standard of 150 ug/m3?

Explanation / Answer

conc. of particulate matter=365 mu g/m3 Yes, this exceeds the NAAQS PM 10 standardof 150 mu g/m3

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