A draft ordinance to license up to three medical marijuana dispensaries in unincorporated Marin is meeting worries over the potential proximity to youth-related services and support from patients and dispensary staffers in Marin and the Bay Area.

At a two-and-a-half hour workshop the county convened on Tuesday afternoon, patients described the relief medical marijuana can provide, while other residents aired concerns over the proposed parameters for dispensary locations, particularly as they pertain to possible locations…