This looks very difficult to calculate unless you're already familiar with the dynamics at play. Here's an extremely relevant paper from 2019 on the topic: htt

This looks very difficult to calculate unless you're already familiar with the dynamics at play. Here's an extremely relevant paper from 2019 on the topic: https://www.consiltant.com/wp-content/uploads/2019/09/20190911-Health-effects-due-to-evaporation-of-liquids.pdf https://www.consiltant.com/wp-content/uploads/2019/09/201909... > the speed [of evaporation] is determined by, among other things, the pressure in the system, temperature of the substance, substance properties such as boiling point, vapor pressure, molecular weight and density and of course the size of the hole. Trying to do napkin math of dividing 30,000 gallons into the volume of air over a city under a certain altitude seems like a pointless exercise given the very long list of parameters that would highly influence its dispersion.