Mainly stark contrast can be found between the EPA and various state and chemical manufacturing companies in terms of data divergence. The main concern surrounding EtO is the elevated cancer risk that occurs with long exposure both direct and indirect. The ways in which the EPA and other companies and agencies assess risk have been different in terms of unit quantity. The EPA utilized in 2016 the Integrated Risk Information System to model cancer risk. According to the American Chemical Council the, “ACC believes the value is significantly flawed.” Also, the Texas Commision on Environmental Quality has stated, “ ‘the US EPA unit risk factor (URF) for ethylene oxide is not scientifically justified.’ ”. This has led the TCEQ to raise its exposure limit from 1 ppb to 2.4 ppb.
