Lawrence Berkeley National Laboratory

Greta Mart/KCBX

Voters in six California counties have passed measures banning fracking and placing limits on other types of oil extraction. This November, a citizen’s initiative in San Luis Obispo County sought to do the same. Oil companies funded an $8 million dollar campaign to defeat the measure, and a majority of voters rejected Measure G—54 to 46 percent.

The defeat removes one roadblock to a planned expansion of operations at the Arroyo Grande oil field near San Luis Obispo.