Water is a precious commodity everywhere, especially west of the Mississippi River in the USA and in many other countries around the world.
Using a modified version of the KohlerNordensonFox equation (1955), this demonstration calculates how much water evaporates from a pool or a pond as a function of the dimensions of a rectangular container, the wind speed, humidity, and vapor pressure of water.
The Demonstration Project may be viewed, partially executed, or downloaded from:
http://demonstrations.wolfram.com/EvaporationOfWaterFromAPoolOrPond/
This program may be modified to obtain the percent of the spilled hazardous materials that evaporates when for example a gasoline delivery truck spills its cargo (gasoline) on the earth.
Please let me know if you are interested in calculating the amount of the spilled hazardous material.