Clear Lake Sanitary District was originally built in the early 1950s and utilized a trickling filter system.By 1988,the plant was in need of a major renovation to update older technology and meet the demands of population growth.This 23 million project began in 1995 and was implemented in several phases over the course of six years.Renovation included construction of new pumping systems,a new secondary treatment system,and two storm flow equalization basins providing a total retention of 8 million gallons along with renovations of eight lift stations and 8.5 miles of new force mains.The trickling filter system was retrofitted with a 4-basin AquaSBR~R system in 1997 to meet their secondary treatment process needs.The remaining renovation of a 5 million-gallon storm flow equalization basin was completed in 2001.
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