CC-11-019: Interim Approval of NCASI Method TNTP W10900 for Analysis of Total Nitrogen and Total Phosphorus

The EPA Office of Water has reviewed NCASI Method TNTP-W10900 (Total nitrogen and total phosphorus in pulp and paper biologically treated effluent by alkaline persulfate digestion) and in future regulatory actions will recommend its inclusion in the list of approved methods at 40 CFR Part 430.