The Rule Covers Five Things a Warning Letter Usually Turns OnThe Produce Safety Rule is the first enforceable national food safety standard for produce, established under the FDA Food Safety Modernization Act. California is unusual in that on-farm inspections are performed by a dedicated unit within CDFA's Inspection Services Division, the Produce Safety Program, staffed by inspectors acting on FDA's behalf. At the close of an inspection, inspectors leave a Form FDA 4056, Produce Farm Inspection Observations, along with an inspection report summary. Produce Safety Rule compliance dates have also been phasing in by farm size. What is the Produce Safety Rule?