People, take your exams, get over yourself, and go home to your cushy summer lifeguard jobs. If this happened during the beginning of the semester, it would have been already forgotten by noon today. Also, if you don't know what "Hazmat" means, stop crying about evacuating the city and inhaling dangerous chemicals. Hazmat can mean flammable gasoline, but it can also mean a box truck full of rubbing alcohol and cotton balls (which is exactly what it was). If you saw water mixed with "chemicals" on the road, take a look at any other road after it rains. The streets are always full of motor oil, gas, and other fluids that typically leak from passing cars...nevermind the chemicals that seap up from the pavement materials itself everytime it rains. You're going to find a "rainbow" puddle on any street in the city. Those of you who have worked with hazmat, I completely agree with your comments. Kudos. Calm down and find your zen, finish your exams, and get outta here so Boston can catch a breather for a few months.