Key project aspects would include: • Enlist the participation of leading utilities from across North America, who represent various geographical regions and system sizes and have experiences in a diverse range of rehabilitation technologies. • Convene an expert workshop to decide upon the technologies and parameters to be examined in the project. • Collect relevant bid packages and results from utilities including change order costs (if available). o Exclude costs that are irrelevant to the analysis. o Normalize data in terms of region and translate to current dollars using the Engineering News Record (ENR) construction cost indices. o If appropriate, incorporate updated data from a similar 2003 study by the Trenchless Technology Center (TTC) of Louisiana Tech University. • Compile and analyze the cost data. o Develop curves for determining appropriate planning level estimates. o Provide methodology for adjusting estimates to reflect regional differences and future inflation. o Provide relevant statistical parameters (e.g., R-square values) for each curve...
