Risk from multiple chemicals detected in groundwater must be evaluated as specified in part 4717.7880 for effects other than cancer and in part 4717.7890 for cancer. If a chemical causes both cancer and effects other than cancer, the risk contributed by that chemical must be included in both evaluations. When the multiple chemical health risk index is greater than one, the multiple chemical health risk limit has been exceeded.
MS s 103H.201
May 11, 2009
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