The Urban Pipeline Awareness Committee (UPAC) is a dedicated committee within EAPUOC representing a small number of member companies that operate High Vapour Pressure (HVP) pipelines in the Capital Region.

High vapor pressure refers to volatile products such as propane, butane and other natural gas liquids that can quickly convert to gaseous form at atmospheric pressure and therefore need to be transported in a liquid state under high pressure.

In the Capital Region, HVP products that travel through underground pipelines include natural gas liquids such as propane, ethane and butane, and derivative products such as ethylene.

Below, you will find maps of key pipelines in the Capital Region. Clicking on the map will open it full size.

What to do if you suspect a leak

If you see liquid pooling, fog or vapour cloud, frosted vegetation…
If you hear hissing or roaring sounds…
If you smell pungent rotten egg odour or gasoline odour…

  • Leave on foot, move upwind and avoid contact with escaping products
  • Sparks can ignite vapours – DO NOT light a match, start/stop an engine, switch on/off light or use a cell phone
  • Call the 24-hour number on the pipeline marker when you are at a safe distance – or call 9-1-1

In the event of a pipeline leak or rupture, companies notify the local municipality to assist with emergency management and response. The municipality will direct you to take one of two emergency safety measures: Evacuation or Shelter-In-Place. Municipalities have access to the Emergency Public Warning System, and can interrupt local radio and television programming to delivery emergency instructions.

For any comments or concerns about HVP pipelines in your area, don't hesitate to call your UPAC member companies.  Looking for more information?  Feel free to browse the Resources Menu.

keyera colour logo 1-800-661-5642
nova 1-800-780-6682
pembina 1-800-360-4706
pmc 1-800-875-2554
imperial 1-800-372-9597

click before you dig

Don’t forget to submit your locate online by clicking HERE or by calling 1-800-242-3447.