Sacramento, Sept. 30 – Gov. Schwarzenegger signed bill AB 2650 (Buchanan), which prohibits medical marijuana collectives from operating within 600 feet of a school as of Jan 1, 2011. It covers all activities by dispensaries or other providers that have a storefront location or mobile outlet and are required to have a business license. The bill grandfathers dispensaries that are currently allowed to operate there under existing local regulations.