Published: October 14, 2021 By: Carol Anne Stares

Federal and Provincial regulations substantially limit the overall facility venting as well as venting from compressor seals comes into effect January 1st, 2022. There are several incentive funding programs that can financially support projects to eliminate or reduce venting. Due to the impending changes in regulations, time is of the essence to monetize on these emissions reductions.

This webinar covers important topics and considerations such as:

  • Introduction of compressor seals and venting.
  • Solutions for meeting/exceeding regulatory requirements.
  • Regulations for venting in Alberta, British Columbia and Saskatchewan.
  • Available incentive programs on eligible projects.
  • Carbon offset overview to support project costs.


Questions & Answers From The Webinar

Q1: What do you recommend for Venting Monitoring? The off-gas measurement from tanks to prove that  your under 3000m3/month?
A1: Under AER Regulations vented gas volumes are reported through Petrinex and Directive 60. The methodology for the desktop measurement depends on facility layout (where meters etc. are located). The methodologies are listed within Manual 15 with support from Directive 17. As far as physical field measurement off tanks, this is not a current requirements under Directive 60 or 17, however many operators are experimenting with continuous emission monitoring, FLIR, drone or truck mounted measurement devises. Most devices at this point only show there is venting occurring but the “measurement” of the volume is really more of an estimate. We have met with several vendors and provide additional details on field measurement on a case-by-case basis. If you would like a precise measurement, there are 3rd parties which have the equipment and instrumentation to install on your tank and temporarily measure your volumes in real time.

Q2: Existing facilities can continue to vent at 15e3m3/month, or will they have to follow the new rules of 3e3m3/month?
A2: Existing facilities are “grandfathered” and can continue to follow the Overall Vent Gas Limit of 15,000m3/month. They do not have to follow the Defined Vent Gas (DVG) of 3000m2/month at this time.

Defined Vent Gas Limit (DVG) = Vent gas from routine venting, excluding vent gas from pneumatic devices, compressor seals, and glycol dehydrators. The duty holder must design and operate any site with first receipt or production on or after January 1, 2022, to limit the DVG emitted to less than 3.0 103 m3 of vent gas per month per site or less than 1.8 103 kg of methane per month per site.

Overall Vent Gas Limit (OVG) = is all routine and nonroutine vent gas (Vent gas from pneumatic devices, compressor seals, and glycol dehydrators are excluded from the OVG limit until January 1, 2023.)

Q3: Venting from methane from tanks or burning it in a flare? Any idea what is worse/better to recover the methane with VRU?
A3: Methane is approximately 25-28 times more potent as a greenhouse gas than CO2. From a regulatory perspective, burning methane is an acceptable way to deal with vented natural gas currently and it reduces your impact on greenhouse gases by 25-28 times however, from a purely “environmental perspective” conserving the gas is still better than combusting it as it completely eliminates a source of emissions.  There are also certain funding programs where you will benefit more from “eliminating” a source of emissions rather than just reducing the emissions. Each instance and facility infrastructure should have a cost analysis performed and evaluated for most effective solution.



Adrienne Headrick, B.A. SC., EP,
Manager, Regulatory & Environmental Development, Energy





Mark Ryan, P.Eng.,
Vice President, Engineering, Energy




Dean Michaud Dean Michaud, P.Eng.,
Vice President, Projects & Business Development, Energy