1)The PRU Separator bottoms and the Sprung Phenol Coalescer bottoms combined stream feeds the Phenolic Waste Water Tank, T-2402. Efficient operation of the OEC and SCWC to produce on-specification effluent from the OEC requires a constant feed rate in both volume and phenol concentration. Infrequent changes to the OEC feed rate should be made to adjust for T-2402 inventory to avoid changing conditions in the OEC and SCWC.