As Hughes points out, they've already taken a crack at the Monterey:

Production included the usual battery of techniques - CCS, fracks, etc. There's just not much to be had, it's just a very rangy bunch of rocks, with manys the dips and folds and faults, compared to the rather homogenous plays being produced elsewhere.
Now, CA production is temporarily up a titch, with production levels back up to the halcyon days of, uh, 2010...well, you take what you can get. They also showed a bit of a plateau for ca. 5 years starting in 1995. Dunno what's behind the latest upsurge.
Meanwhile,
Santa Cruz, Calif., bans fracking! Delusions of France. And like the Land of Cheese they don't produce much in the way of hydrocarbons in the first place so why should we care...
$this->bbcode_second_pass_quote('', 'S')anta Cruz on Tuesday became the first California county to ban fracking, the latest in a string of moves by local governments in the state to take a stand against the controversial oil and gas producing method.
Although San Cruz County does not have any oil or gas production, advocates said momentum for a ban took shape after reports surfaced saying that oil companies were exploring the possibly of fracking in neighboring San Benito county. Also, scenic Santa Cruz was the epicenter of the 6.9 magnitude Loma Prieta earthquake that killed more than 60 people in 1989.
Fracking has emerged as a top environmental issue in California. Its Monterey Shale formation contains an estimated 15 billion barrels of hard-to-reach oil, according to the U.S. Energy Information Administration. Shale formations contain fine-grain sedimentary rock, which can be rich in oil and natural gas.
Woops, looks like someone needs to update their copy...