Last night at 23:13 hours Stations 46 & 49 were dispatched to a possible gas leak. 4620 & 4900 went Enroute, Upon the arrival of 4620 a strong odor of natural gas was in the air and NJNG was notified. 4602 & 4913 went Enroute and arrived on location simultaneously as well as 4900. Crews from 4913 went to the meter on the side of the Structure while 4900 and the crew from 4602 entered the Structure and checked the interior apartments on the 2nd floor. 4913 crew located the Gas leak at the meters on the side of the building. Crews awaited NJNG, NJNG arrived on location and all units were released by 4620.