…erator or owner. Minimum elements include review and identification of atypical events that could affect distributed water quality or indicate that distributed water quality was impaired; changes in distribution system maintenance and operation that could affect distributed water…

…raph (a)(1) of this section becomes a hazardous waste when any of the following events occur: ( 1 ) In the case of a waste listed in subpart D of this part , when the waste first meets the listing description set forth in subpart D of this part . ( 2 ) In the case of a mixture of…

…erator or owner. Minimum elements include review and identification of atypical events that could affect distributed water quality or indicate that distributed water quality was impaired; changes in distribution system maintenance and operation that could affect distributed water…

…ds ratio is a statistic that quantifies the strength of association between two events. In the context described here, an “event” is the reported presence of a specific PFAS contaminant. The odds ratio between PFOA and PFHxS, for example, reflects the strength of association betw…