While the implementation of enhanced biological phosphorus removal (EBPR) may appear to increase the complexity of the activated sludge process, the improvement and stabilization of activated sludge quality and performance afforded by EBPR actually simplify operational requirements. Moreover, there are design features that can be included to further simplify operation. Presented is a discussion of the design features included in the expansion and upgrade of the Dublin San Ramon Services District Wastewater Treatment Plant, in particular the mixedliquor surface-wasting system for mean cell residence time (MCRT) control. Comparison of operations and performance data before and after the expansion and upgrade project confirm the design intent to simplify operations and improve and stabilize activated sludge quality and performance.