Planning Level Cost Estimation for Sustainable I/I Reduction Using a Performance-based Cost Function

Authors: Perry, David; Lukas, Andrew; Bennett, David; Bate, Timothy; Krill, William

Source: Water Practice, Volume 1, Number 6, December 2007 , pp. 1-12(12)

Publisher: Water Environment Federation

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Abstract:

This paper presents an alternative approach to estimating the cost of I/I reduction that is not technology dependent because it is based on performance results from a wide range of I/I reduction projects. The Water Environment Research Foundation (WERF 2003) documented demonstration projects; the study reports the I/I reduction achieved and the cost. These projects along with other available I/I project experiences from Milwaukee, Wisconsin and King County, Washington were used to create a performance based cost function for the unit cost of I/I removed based on pre-rehabilitation I/I rates. Experience from the Milwaukee Metropolitan Sewerage District shows how the approach has been applied to determine the cost of I/I reduction for sustainable facilities planning. This method can be applied to overall system master planning as well as preliminary planning of smaller conveyance upgrades projects.

Keywords: I/I REDUCTION; SUSTAINABLE SYSTEM PLANNING; COST ESTIMATING; PERFORMANCE BASED COST; SEWERSHED I/I RATES; WERF I/I PROTOCOL

Document Type: Research article

DOI: 10.2175/193317707X269618

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