$[$Adapted from Crowl $5-3]$ A chemical pipeline going from Mobile, AL passing through the highly rural Washington, Clarke, Marengo, and Hale counties. Emergency response to a rupture in this pipeline is being evaluated. If there were a rupture, it is expected that the discharge rate would be $4\mathrm{.}53k\frac{g}{s}.$ The concentration of concern is $100ppm-$ anyone downwind who is exposed to a concentration higher than this must be evacuated. If the pipeline is built at ground level and the MW of the chemical is $17\mathrm{.}09\frac{g}{m}ol,$ calculate the expected downwind evacuation distance for Mobile, AL$,$ as an urban center, and the rural locations along the route described. Assume we are modeling a summer: day in July, and the temperature is an average of $90F$ across the length of the pipeline.