On sectional charts you can see that, through various restrictions, regulators encourage pilots to avoid flying too close to Gas Venting Stations. These seem to be places where natural gas may occasionally be vented into the air (for example from pipelines). I have been unable to determine if the gas is preignited.
Is the principal risk from gas discharge that's being mitigated here:
- a combination of the above?
Have incidents occurred relating to these risks?
You can find some talk of the risks online but it seems mainly to be in the form of "My mate told me...".