Outdoor/open pile burning is definitely not allowed, where did you get that picture?
Trust me, Bakersfield has some of the worst air quality in California. APCD (County) and the ARB (State) would be all over that and they would lose their permit to operate. If that was a fire in one of their static compost piles or wood piles, it was accidental. Greenwaste and compost piles can become too hot and produce steam that looks like smoke, but that looks a little excessive. IMO, if the boys ended up at this site they would have been discovered, 100%.
Here's their operating permit details-
SWIS Facility/Site Summary