The County Sanitation District No. 1 (CSD-1) of Sacramento County, California is completing a two-year project on the impact of grease accumulation in selected areas of their collection system. Current grease handling policies of CSD-1 and local food producing facility wastewater flows result in heavy localized grease accumulation in the collection system that account for approximately seven percent of the annual grease related sewage overflows, and 36 percent of the flooded structure mitigation costs related to the overflows.