A gas leak in West Caln Township Saturday afternoon had crews on the scene for several hours. The initial call came in around 12:30 p.m. According to Officer Triola, the leak was propane gas, and it happened along Mallard Lane. He said several families in the area were evacuated. There were no reports of any injuries. Police, fire and Haz Mat crews were on the scene until it about 7:30 p.m.