Evacuate the property immediately; leave doors and windows open (this will not stop a leak, but will help some of the gas escape)
Do not use any electrical devices (cell phones, light switches, garage door openers, etc.) until you are at a safe distance from the property.
Do not start a vehicle if it is on the property.
Call your gas company.
Call Capps Plumbing & Sewer at 847-884-8300