Abstract:
During the period of July 2000 to June 2001, the City of Raleigh reported sixty-six sewer line blockages that resulted in sewage spills of one-thousand gallons or more. More than half of these blockages were caused by the buildup of fats, oils, and greases (FOG) in the sewer line. Although managers have incentive to act in the form of new requirements under the State’s Clean Water Act of 1999, they are having difficulty designing programs that are successful at preventing grease blockages.