Question 22 A man works in an aluminum smelter for 25 years drinking 1 Uday of water (note that there are 250 work days per year). The drinking water in the smelter contains 0.0700 mg/L arsenic and 1.700 mg/L methylene chloride. Assume the man weighs 70 kg. -1 -1 The potency factors for ingested arsenic and methylene chloride are 1.75 ( mg ) and 7.5x10'3 ( m 1 , respectively. #9443 rm . What is the incremental lifetime cancer risk for the man from arsenic and methylene chloride and is this an acceptable risk? Up'm'il ChooseaFile