At 7:10PM the BRVFC was dispatched to a trash/dumpster fire at Graphic Packaging International. Chief 99 arrived on location to find a portable two room bathroom trailer with a small fire on the inside. Engine 99-1 with the duty crew arrived minutes after dispatch and was instructed by Chief 99 to stretch a hand-line. The engine crew quickly contained the fire to the original fire room. TAC 99 also made the response and was ready to supply the Engine if additional water was needed.