Cal. Code Regs. tit. 3, § 1462.17
If plums or fresh prunes are packed in standard container number 9C, the bottom layer or layers may contain a fewer number of plums or fresh prunes than in the top layer if both of the following requirements are complied with:
1. Amendment and renumbering from Section 1458.4 filed 1-21-75; effective thirtieth day thereafter (Register 75, No. 4).