This is an old case, with the defendants initially busted a decade ago. In fact, IIRC it was the first case of a Federal bust of a California medical marijuana dispensary. Moreover, it looks pretty clear from the court records that the Feds didn't bust them so much for the dispensary, though that played into it, but for the alleged shipment of marijuana by Dale.

Word to the wise...the Feds still consider growing more than 100 plants to be a very serious offense, and they do not respect any State's medical marijuana laws when you're accused of breaking that barrier. Don't do it!