19F - RECEIVE AND FILE SEWER SYSTEM

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FOG Control Program Manual 2.3 Historical FOG Control Activities The City conducted an initial FOG Characterization Study (Study) in 2003/2004 to provide key information and program recommendations for the development of the City's FOG Control Program. The Study consisted of four tasks: • Enhanced Maintenance Location Characterization - identifying and mapping the known problem areas in the sanitary sewer system that requires more frequent cleaning and maintenance (referred to as "enhanced maintenance locations"). Key information was obtained from staff to identify the factors that cause or may contribute to the areas identified as enhanced maintenance locations. • FOG Source Characterization - physically inspecting the enhanced maintenance locations through the use of closed circuit television (CCTV) equipment to further assess the critical enhanced maintenance locations identified by the City's staff to confirm known or to identify unknown problems in the sanitary sewer system and to identify potential sources of FOG. • FSE Characterization - physically inspecting and educating the FSEs. FSEs located within the City's service area were inspected to identify and classify each FSE's potential to generate and discharge FOG to the sanitary sewer system. • Data Integration and Program Recommendations - mapping the enhanced maintenance location and FSE locations, development of databases for the information collected from the FSE Characterization, and for the information collected during enhanced maintenance location and FOG Source Characterization. Correlations and recommendations for the development of the City's FOG Control Program were then developed utilizing these resources. The Study's preliminary results concluded that FOG Source Characterization (CCTV inspection of enhanced maintenance locations) is extremely beneficial at identifying the potential sources, determining the cleaning effectiveness, defining the contributing issues (e.g., structural issues, roots, other), and assisting in defining the approach for resolving and/or controlling the grease blockage issues for FOG related enhanced maintenance locations. Additionally, the Study concluded that FSE Characterization activities are beneficial in identifying potential grease producing equipment, identifying the removal equipment and maintenance practices, and kitchen best management practices. The Study recommended inspections to ensure that the grease removal equipment (GRE) is maintained properly and that kitchen best management practices (BMPs) are followed to minimize the accumulation of grease and blockages in the sanitary sewer system. Additionally, the Study recommended: cleaning of enhanced maintenance locations be continued and the cleaning effectiveness and frequency be evaluated (through the judicious use of CCTV) on an ongoing basis for City staff and cleaning contractors; and structural repairs that may minimize grease accumulation and potentially resolve the enhanced maintenance location be considered as a factor in prioritizing repairs to the sewer system. 19F-184 3