At the Chipotle here there is a sign touting their "naturally raised chicken and pork". It says something like "Our Meat Doesn't Require a Prescription" and then goes on to say "no antibiotics" etc.
Did they stop to think of the logical implication? Does the rest of their meat require a prescription? Hmm.
I hear they are shifting towards offering naturally raised beef though, which makes sense because their pork supplier, Niman Ranch, has gotten into the beef business.
They also have teamed up with Joel Salatin, to source from his sustainable farm in Charlottesville. Whether or not this will lead to sourcing locally in other places remains to be seen, but the story highlights some obstacles to doing so ranging from a non-uniform product to food-safety equipment.
Which leads me to another thing I've learned in my work: if you want to source locally, you need someone dedicated to the project. You can't just send in an order form for 400 carrots, you need to be able to work with a lot of farmers with varied methods of production and often you need enough knowledge to help each farmer provide the product you need.