Key Findings of the Reassessment Risk Characterization
Cancer slope factor – primarily based on recently published analyses of human studies
- Revised upward by ~6 over the 1985 EPA value based on 1978 rat study
Cancer risks to the general population may exceed 1/1000 from background (dietary) exposure
- Likely to be less , and may even be zero for some individuals
Adverse non-cancer effects have been observed in animals and humans within 10X background exposure
- Likely that part of the general population is at, or near, exposure levels where adverse effects can be anticipated