Here is the Ballotpedia entry for the proposed plastic bag ban referendum.
http://ballotpedia.org/California_Plastic_Bag_Ban_Referendum_(2016)
If the required number of signatures are ratified, the ban will have to be placed on the November 2016 ballot for the voters to make the call. The ban, SB 270. was originally passed by the California legislature and ratified by The Moonbeam, but sufficient signatures and a majority of California voters could overturn this legislation.
Of course this will not overturn county of city ordinances. I don’t know how we can overturn our local ordinance – the clock is ticking, I don’t think we have much time if any for our own referendum drive. That doesn’t mean we can’t get petition council to overturn it.
Chico Taxpayers Association 