The City of West Hollywood has implemented a multi-year program to annually clean, inspect, and rehabilitate approximately 10% of the citywide wastewater collection mainline and manhole system. Major goals for the program include cleaning and inspecting the system; documenting observed defects and deficiencies; locating significant infiltration and inflow (I/I) sources; identifying structural and operational defects; analyzing the inspection data for purposes of developing a condition assessment rating for the sewer system; and developing recommendations for the repair and rehabilitation of defective sewer lines and manholes to resolve system deficiencies. This paper will describe and contrast the innovative technologies and methods the City has used to inspect its sewer system; the results of the assessment of the condition of that portion of the system inspected; and the trenchless technology the City has used for repair and rehabilitation of the system. The presentation of the paper will provide a status update of the progress the City has made to date in the implementation of its multi-year wastewater improvement program. An early phase of this project received recognition for its innovative robotic sewer inspection approach and use and was awarded a 2010 Building Excellence/Shaping Tomorrow (B.E.S.T.) APWA Project of the Year Award from the Southern California Chapter of the American Public Works Association (APWA). APWA is the professional association of Public Works leaders throughout the U.S. and Canada. The Southern California Chapter includes more than 1,400 members. The purpose of the Chapter’s awards program is to recognize public agencies for their outstanding projects and programs and to share the wealth of good ideas.
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