The Detroit City Council is expected take up a second ordinance to regulate the city’s booming medical marijuana industry on Tuesday, although final approval of the measure may not come until January.

The council’s planning and economic development committee on Thursday approved the latest version of ordinances designating where dispensaries can locate. Without those regulations, more than 150 unlicensed and unregulated dispensaries have opened up across the city, raising deep concerns among some residents.

The restrictions would require that dispensaries not be located within 1,000 feet of schools, churches, caregiver centers and places such as liquor stores.

One major change the council committee approved would allow for a variance of distance of up to 20%, to be determined by the city’s Board of Zoning Appeals. That would allow, for example, a dispensary to be located within 800 feet of a church if the BZA approved it. The variance would not apply to drug-free school zones, however, and dispensaries would have to be at least 1,000 feet from those zones. [Read more at the Detroit Free Press]