The cause is known: "Blue tissue and flesh can be a sign of rodenticide ingestion, which can occur by eating bait – which often contains dye to identify them as poison."

The dyes are large, planar aromatic molecules designed to resist rapid breakdown in the environment or the animal’s digestive tract.

"Wild pig flesh turns neon blue after eating rodent poison"

California, Authorities, and Alarm are all unneeded

> How are feral pigs destructive? Let us count the ways.

They are invasive and cause millions of dollars in agricultural damage each year, rooting and trampling through a wide variety of crops. They prey on everything from rodents, to deer, to endangered loggerhead sea turtles, threatening to reduce the diversity of native species. They disrupt habitats. They damage archaeological sites. They are capable of transmitting diseases to domestic animals and humans. In November, a woman died in Texas after being attacked by feral hogs—a very rare, but not unprecedented occurrence.

https://www.smithsonianmag.com/smart-news/feral-pigs-are-inv...

"Processing" usually means taking the meat out for consumption, the skin for leather, etc.

Any idea why the meat of a wild pig was being processed in CA? What would they have done with it?