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Document Designation and Title Year Select Item(s) D4698 Standard Practice for Total Digestion of Sediment Samples for Chemical Analysis of Various Metals 92(2007) D4698 Standard Practice for Total Digestion of Sediment Samples for Chemical Analysis of Various Metals 92(2001) D4698 Standard Practice for Total Digestion of Sediment Samples for Chemical Analysis of Various Metals 92(1996)