From the LA Weekly:

The Los Angeles City Council decided to hold off on voting on a controversial medical marijuana ordinance that would severely reduce the 545 pot shops in Los Angeles.
​
The postponement came after the city's Planning Department presented hurriedly created maps showing that only five of 137 pot shops envisioned under a City Council cap could remain at their current locations if the city adopts a buffer zone to keep them at least 500 feet from schools, youth centers, libraries, religious institutions and residential properties. The remaining 118 would most likely have to relocate, many to industrial zones.