(a)
For purposes of calculating the amount to be collected by the processor for purchased grapes, the assessment shall be based on the gross dollar value of the grapes, which is the gross dollar amount payable for the grapes before any deductions for governmental assessments and fees.(b)
For purposes of calculating the assessment for grapes not purchased, the assessment shall be based on the following:(1)
The tonnage of grapes delivered less material other than grapes and defects or other weight adjustments deducted from gross weight.(2)
The weighted average price per ton delivered basis purchased from all nonrelated sources for wine, concentrate, juice, wine vinegar, and beverage brandy by processors, by type, variety, and reporting district where grown for the grapes delivered, sources as reported by the secretary pursuant to Section 55601.5 for the immediately preceding marketing season.
Source:
Section 6047.9, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=FAC§ionNum=6047.9..