Food and Agricultural Code § 6461
ARTICLE 4. Abatement, Reshipment, or Treatment
It is unlawful to ship or transport any plant or any other thing into this state which is infested with any pest which has been listed, by the director, as detrimental to agriculture in this state.
The director shall either establish and amend the list of pests by order, after notice and opportunity for written or oral comments, or through the adoption or amendment of quarantine regulations.
In addition to the civil, criminal, and administrative remedies specified in this division, the director may, after notice and opportunity to respond, impose inspection, treatment, certification, holding, or other requirements for any shipper or transporter that has shipped or transported three or more pest-infested shipments into this state within any 12-month period.
With regard to any commercial shipment violating any of those requirements imposed pursuant to this section, the director or commissioner may also charge the shipper or transporter the cost of inspecting and controlling the pest.