Black Gold In The Hood

I just heard a news story which stated that PXP out of Houston, Texas believes that the oil levels in South Central Los Angeles are rising.
No, not to the highs of the 1920's - but to a level that makes more drilling a viable option.
Maybe it's just seepage from other untapped sources - or is the Earth in a constant state of creating petroleum?
http://www.cityprojectca.org/ourwork/baldwinhills.html

http://cagreening.blogspot.com/2008/09/baldwin-hills-oil-drill-baby-drill.html