Answers for the first run:

(1) Distance to the one-hour maximum is 892 m.

(2) This maximum concentration is 3.798*10-6 g/m3.

(3) The maximum within 500 m is 2.469*10-6 g/m3.

For the second run:

(1) Distance to the one-hour maximum is 150 m.

(2) This maximum concentration is 179.1*10-6 g/m3.

(3) This is also the maximum within 500 m.

You can see from these results that building downwash can have a powerful effect on pollutant distribution.

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