Water Reclamation Plant No. 4 Expansion
Coachella Valley Water District
LEE & RO provided planning, preliminary and final design, and construction management and resident engineering services for a $21 million expansion project, which increased the secondary treatment plant capacity from 6.9 to 9.9 mgd by adding a new 3 mgd nitrogen removing activated sludge plant. Project components included two aeration basins, two circular secondary clarifiers, a blower building with Turblex blowers, an emergency generator, a gravity belt thickener, a sludge dewatering belt press, chlorine contact tanks, and chlorine and sulfur dioxide storage & feeding systems.