Although California voters decriminalized marijuana last year with a ballot measure, Shasta County’s rules are going the other way. Prior to the passage of Proposition 64, the county had allowed limited medical marijuana cultivation only if done in a structure with very specific features, including security, safety and odor control. Sheriff Tom Bosenko said he was not aware of a single structure in the county that successfully met the requirements of the ordinance. The new rules do away with that structure and maintain a complete ban on all outdoor cultivation and retail sales. Whether for medical use or not, the ordinance bans all commercial cannabis activity, delivery to customers and events involving pot. There is a limited provision to allow caregivers to deliver medical marijuana to their patients. Other than that, the only marijuana activity allowed is that which Prop 64 mandates. Anyone in the state can grow up to six plants inside their private residence for their own use, a provision local governments cannot prohibit. The board will vote on the new ordinance during Tuesday’s meeting.