HALE AVENUE RESOURCE RECOVERY FACILITY (HARRF)

Approximately 350 miles of pipelines and 11 pumping stations serve as the sanitary collection system backbone to direct this community's domestic and industrial wastewater to its treatment plant, the Hale Avenue Resource Recovery Facility (HARRF).

The HARRF started at its current location in 1959 and is an activated sludge, secondary treatment facility. This consists of physical, biological, and chemical treatment methods, which include screening, sedimentation, chemical precipitation, and biological processes. Escondido operates the HARRF for the benefit of the City and the Rancho Bernardo area of the City of San Diego. The facility is designed to treat wastewater flow of 18 million gallons per day (MGD), operating 24 hours a day; the average daily flow is 12.7 MGD, comprised of Escondido's flow of 9.7 MGD and Rancho Bernardo's flow of 3.0 MGD.

The wastewater flow is called influent as it enters the facility and…