BOULDER, Colo. -- Boulder officials are considering whether to create new regulations on the city's 20 licensed medical marijuana dispensaries.

The Boulder Planning Board will take up the issue Thursday, drafting a set of regulations to recommend to the City Council, according to the Boulder Daily Camera newspaper.

The newspaper reported the city is looking at several options:

Amending the sales-tax licensing process to require that all businesses are legal at the local, state and federal level. Since the cultivation and sale of marijuana is not legal at the federal level, that move could ban dispensaries or growers.

Setting a maximum number of medical marijuana dispensaries allowed in the city.

Adopting a moratorium on any new medical marijuana dispensaries.

Boulder currently has no regulations governing the cultivation, marketing or sale of medical marijuana.

Boulder staffers have outlined possible regulations for the City Council to consider. The restrictions could include rules for how close dispensaries can operate to schools, parks, day-care centers and residences; requiring security systems in dispensaries; requiring background checks on all employees; prohibiting the sale of marijuana at locations that also sell liquor; requiring dispensaries to keep a list of all patients to determine whether their quantity complies with the law; and requiring dispensaries to report any criminal activity to police, according to the Daily Camera.

The newspaper reported that city records show that the existing dispensaries pay out an average monthly sales tax of between $2,400 and $3,000 each.