2 EPA Risk Assessment:FPQA Reasonable certainty of no harm Safety is defined as a reasonable certainty that no harm will result from aggregate exposure to the pesticide chemical residue,including all anticipated dietary exposures and all other exposures for which there is reliable information. OSU 0re9onsaEPA Risk Assessment: FPQA Reasonable certainty of no harm “Safety is defined as a reasonable certainty that no harm will result from aggregate exposure to the pesticide chemical residue, including all anticipated dietary exposures and all other exposures for which there is reliable information