A nasty gaseous air pollutant is emitted at a rate of 55. 5 kg/s from IPollute Chemical's main stack near Dallas. The conditions on a certain day are: It is a cloudy summer day, the sun is at 27. 2 degrees above the horizon, and the average wind speed is 2. 53 m/s blowing directly from west to east. There is concern about the air quality at a highly populated downwind location 1. 19 km east of the plume. The location of concern is not exactly along the centerline of the plume but at y = 42. 7 m off the plume centerline horizontally and at z = 34. 9 m below the plume centerline vertically. Calculate the mass concentration of this chemical at the location of concern in units of mg/m³.
A) 335. 5 mg/m³
B) 522. 1 mg/m³
C) 186. 4 mg/m³
D) 754. 3 mg/m³