I was just in front of Engine 33 & Ladder 15's quarters on Boylston Street when Box 2312 was struck for the Boston University Science Building at 590 Commonwealth Avenue. Arriving companies were met by evacuating students and staff who reported an explosion in a chemical locker on the 3rd floor. District 4 establishing command ordered a Level 3 hazmat response and for the 1st alarm companies to evacuate anyone left in the building. After the arrival of several extra companies, special units and hazmat technicians; companies suited up and entered the building. A 4' x 4' spill was found in the lab along with the location of a small explosion in the storage locker. The incident was ongoing for several more hours before companies began to make up.

The heavy drizzle and fog was playing havoc with the flash and camera so photos of all the assorted apparatus was difficult.