This was known when they first started to develop it back in the late 60's.

I'm curious when you first learned of the leak, and the ramifications. I wonder if the media has been giving this the attention it deserves. Media blackout, perhaps?
I only learned of it 3 days ago, through a link posted on another site.

Local news covered it...but I just discovered how bad it is when I came across this piece about an hr ago..

I'd take with a huge grain of salt - I live in California and have not heard anything about this.

And I trust her completely.

http://www.msnbc.com/rachel-maddow/watch/nasa-to-survey-belching--toxic-gas-leak-589123139589

for weeks now. She also reports she is about the only one in news media who cares about it.

it TV is not interested. But if Rachel is on it then there is real science behind it.

Theres been word about this for awhile..but very few details..

Not a hard hitting detail oriented piece, it's a piece about how it's disrupting people's christmas. I don't know how much they've covered this as I ran across this article today after hearing about this and searching for Porter Ranch because I couldn't remember where it was.

But was living in Hutchinson kansas when a couple homes and a store blew up all at once because of a leaking underground gas storage like 5 miles away.


http://www.geotimes.org/oct01/feature_kansas.html

It's no joke...and can travel for miles through natural crevices...

and then settled down again a flames started shutting out of the windows.

That was from natural gas though - the kind that heats our homes. It is my understanding that this threat is from methane gas which is the gas that often causes explosions in underground mines. It is also very much a part of CO2 pollution.

Gas is often an unseen enemy.

What Went Wrong at Porter Ranch?
http://www.laweekly.com/news/what-went-wrong-at-porter-ranch-6405804

I've only seen these recent reports, but apparently the methane output is sufficient to seriously threaten state carbon footprint targets. It's just firehousing carbon into the atmosphere.

(and still own) a house about ten miles away.

Porter Ranch has always been trouble. First they NIMBYed their way out of letting Winnetka connect to the 118, and then having fires that were hard to control because they kept putting flammable roofs into an area that had bad freeway access (because they wouldn't let Winnetka connect to the 118).

Porter Ranch is a 30-year-old master-planned community of 30,000 people, schools, businesses, parks and hiking trails tucked beneath the Santa Susana Mountains at the northwestern tip of the San Fernando Valley. It has survived wildfires, hurricane-force winds and a massive earthquake, but none of those matches the body blow dealt by the leak.

Ben Kaczor, who moved to Porter Ranch almost exactly 30 years ago, is hearing stories about declining property values and homes falling out of escrow — and it is changing his future. Kaczor is vice president of a women's apparel company and, at 62, he planned to take early retirement.

"A great portion of my retirement income was going to come from the equity in my home," he said. "But now, I'm not sure. No one can guarantee that another well won't blow, or a third, and we'll have to do this all over again."

Two weeks ago he was supposed to give the company's end-of-the-year speech at a downtown restaurant. Instead, he said he spent the day in bed with headaches and a nosebleed.

http://www.latimes.com/science/la-me-porter-ranch-christmas-20151225-story.html

To basically cover their asses for several previous leaks. I'm truly ashamed.

...which is a very large state with a very large population.

I live 100 or so miles away, but that is a helluva statistic.