Take a look at this
https://www.epa.gov/gasoline-standar...lated-gasoline
that is the EPA website....if you notice, Hemmings cites California as "no position" (just using this one because it demonstrated it the best) ...the EPA document (from which the laws are based) cites differently.....that is just one example......it's availability is predicated on more local government than the State level...for instance upstate NY has a lot of stations at which it is available...but in the NY metropolitan area (New York, Kings, Queens, Bronx, Richmond, Nassau, Westchester, Suffolk counties) local laws prohibit it...so....here in NY ...yes it is available...the closest station is over 100 miles from me