BEI provided sanitary engineering services to Sonoma County to design a wastewater treatment plant for the City of Monte Rio. The design flows were an average dry weather flow of 100,000 gallons per day (gpd) and a peak flow of 140,000 gpd. The treatment plant components consisted of a drum screen, sequencing patch reactor, sand filters, UV disinfection, and sludge bagging. The treatment system was designed to fit into a building constructed to look like a barn. The treated effluent was pumped to an infiltration system consisting of trenches and subsurface drip irrigation.
