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B 12 points in a desperate move to respond to the

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Unformatted text preview: me of 2 years. What is the overall lifetime of B? 7 ­ a) (10 points) Very stagnant conditions in a city results in extremely high PM2.5 concentrations of 150 µg/m3. Forecasts predict that stagnant conditions (no wind) and low mixing depth of 1 km will persist indefinitely. The city consists of 10 x 10 km, has 1 million households, and has shut down all emissions of PM2.5 during this emergency period. If PM2.5 has a deposition lifetime of 3 days, how long will it take for the concentrations to drop to 24 ­hour average standard of 35 µg/m3? b) (12 point...
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This note was uploaded on 03/17/2013 for the course ENVE 4003 taught by Professor Dr.hakami during the Fall '13 term at Carleton CA.

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