Natural gas project review

We must approve any work on or around any natural gas infrastructure. Apply for our approval of your construction or excavation project and we will review your application and contact you. Construction cannot start until we locate and mark underground gas utilities.

Read our checklist (PDF, 55 KB) to determine if your project qualifies for review.

Before you apply, read the following:

Read all the steps before you start the application

The steps list your responsibilities and possible timelines.

We cannot process your request without all required information and documents. Construction cannot start until you receive our response letter and we locate and mark underground natural gas utilities.

Step 1

Online application


Gather all required information and supporting documents before you start the online application.

You must include all of the following:

  • legal business name and contact information;
  • construction plans (include natural gas infrastructure, and add a “caution – gas” note to your drawing set wherever gas mains are present);
  • detailed description of any items installed outside of public right of way;
  • vehicle and equipment descriptions and weight (both wheeled and tracked);
  • crossing numbers and map of temporary equipment and vehicle crossing access routes.

Step 2

Request drawings


You must submit construction plans that include natural gas infrastructure.

Request natural gas infrastructure drawings:

PDFs of area drawings will be sent to you. If further information is needed, you will be contacted.

Step 3

Determine depth of existing natural gas lines


No work can be started over any pipeline (regardless of size) until the existing depth of cover by soft digging methods is determined.

Vibratory compaction methods cannot be used within 3.0 metres of transmission-pressure or high-pressure natural gas main, or within 1.0 metre of a distribution-pressure natural gas main or service line.

Static compaction of granular material can be built up in 300 mm layers until minimum cover is achieved.

Step 4

Request a line locate or safety watch


You must complete a line locate request prior to any excavation or construction operations. Work must start within 14 days of the completed underground locate. If the nature of the work changes or the marks become displaced, stop work and get a new locate.

Request line locates or a safety watch (minimum notices required):

Construction cannot start until you receive our response letter and we locate and mark underground natural gas utilities.

Apply for approval

After you apply

Once you have submitted a complete application, we will assign someone to your project. They will contact you for any missing information and provide you with a response letter.

Contact us

For help with your application or for more information: