Washington's I-502—an initiative approved for the ballot in December—is creating a storm of dissension within the state's cannabis community. The measure would legalize possession of up to one ounce of cannabis by adults 21 and over, but limit sales to state-licensed stores overseen by the liquor control board. It contains no provision permitting home grow. It also contains a Driving Under the Influence of Cannabis (DUIC) provision that would make anyone guilty if they test at above 5 nanograms per milliliter (ng/ml) of active THC in blood. Critics call this an unscientific and arbitrary level.