ancer isk valuation uide, a highly conservative value that would be expected to cause no more than one excess cancer in a million persons exposed over time.

Cancer Risk Evaluation Guide for 1 X 10 -6 excess cancer risk. Contaminants that exceed this value may increase risk of cancer over a lifetime of constant exposure to that level. A value over the CREG does not mean and increased cancer risk, rather it is a value that shows a compound must be evaluated further by the use of calculations to determine if an increased cancer risk is present.

Cancer risk evaluation guide. The concentration of a chemical in air, soil, or water that is expected to cause no more than one excess cancer in 1 million persons exposed over a lifetime. The CREG is a comparison value used to select contaminants of potential health concern and is based on the cancer slope factor (CSF).

Centro di Ricerche Economiche e Giuridiche