@1308 hrs The Hazmat assignment was dispatched to 3101 Eisenbrown Rd for a report of a gas line struck outside the residence. Chief 10 & Engine 10-1 went responding simultaneously @1310 and received the additional that a gas line was struck and hissing noises were heard, also UGI was notified with and unknown ETA. Chief 10 arrived @1313 hrs and confirmed and active leak and began evacuating the structure. E10-1 arrived and stretched a 1 3/4″ hose line to the front of the structure as a precaution. Rescue 11 arrived and its crew assisted the Engine with metering the house. With all readings negative inside the structure, crews stood by awaiting UGI. A UGI tech arrived @1328 hrs and clamped of the damaged line, the leak stopped and a service crew was notified. The incident was placed under control and crews began to secure equipment. Co. 10 & 11 were available @1345 hrs.