Shortly before 2100 hrs Pasco Fire received a call for a structure at 14101 Turner Loop. While responding a heavy black loom up was in the sky. On the dispatch Engines 39, 20,10 and 10 along with Truck 1 and Tanker 21 responded. The structure was well involved with heavy fire conditions in an area of a dead end road. Exposure was and issue as firefighters were able to get hose lines quickly stretched to keep the fire way from spreading into the other building. It wasn't long before most of the structure was on the ground. It took about 30 minutes to gain control of the fire.