UPDATE: The pierced pipe has now been crimped by Heritage Gas and gas levels are already dropping significantly.
Halifax Regional Fire & Emergency personnel are currently on scene at a natural gas leak in Burnside.
Initial reports from the scene suggest construction crews working at the Joseph Zatzman Drive and Akerley Boulevard intersection punctured a four-inch natural gas main pipe.
The concern is that readings are being taken near the area that show high explosive levels, especially from storm sewer openings.
As a precaution, approximately 40 to 50 buildings have been evacuated in the Joseph Zatzman/Akerley Boulevard area.
Nova Scotia Power has also turned off electricity to a large section of the business park.
Heritage Gas is on scene and is assisting fire crews in the capping and/or crimping of the affected gas main pipe.
Halifax Regional Police are also on scene assisting with traffic control.