The odor threshold for vinyl chloride is 3,000 ppm. The town of East Palestine is just under 8 km². If the vinyl chloride evaporated into this area, given a 1,000 m mixed layer height in the atmosphere (i.e. the vertical space that evenly air mixes in above ground), would the vinyl chloride be above or below the odor threshold?

If all the vinyl chloride instead went into the air, what volume of air (in km³) do you need to dilute the vinyl chloride below the standard? (answer to two significant figures)

(This part may or may not be needed but exposure limit is 1ppmv, with 80 tonnes of vinyl chloride at STP)