Proactive monitoring of gas leaks

[BirdsiVideoDrones 0]

I'm curious if anyone on the gas forum is from the insurance industry involved with underwriting gas pipelines ? We are working on a white paper related to the Aliso Canyon disaster and how proactive monitoring for gas leaks is rapidly becoming a major issue

[John Houbion + 31]

What goes through the pipelines, just methane (NG) or a mixture of gasses heading to the refinery?

If a mixture, what is the % of methane?

Just curious.

Thanks