By 1986, twenty-three border quarantine stations were being operated by the State Department of Agriculture which inspected a half-million cars that year.
[6] A 1968 plan to close the stations and replace them with six regional inspection hubs in the interior of the state was ultimately scuttled after opposition to the proposal was mounted by county agriculture officials.
[8] According to the California Department of Food and Agriculture, every dollar spent on maintaining the CBPSes saves $14 in economic losses that would be incurred by the introduction of pests.
If the motorist voluntarily opens the trunk of the vehicle, the quarantine officer may look therein and, as here, remove any plant materials in plain view for further inspection".
[10] Vehicles entering California from Oregon,[4] Nevada,[5] or Arizona,[7] are profiled at CBPS checkpoints to assess their potential risk.