East coast site has the larger total cost (J17). Set up the spreadsheet to calculate AW values in $1 million. First, perform B/C on west coast site since do-nothing is an option. It is justified. Then use incremental values to evaluate East versus West. It is also justified since (B/C) = 2.05. Select east coast site.

\begin{tabular}{|c|c|c|} \hline & \begin{tabular}{c} West \\ Coast Site \end{tabular} & \begin{tabular}{c} East \\ Coast Site \end{tabular} \\ \hline \multicolumn{3}{|l|}{ Initial cost, \$ } \\ \hline Year 0 & 21 & 8 \\ \hline Year 1 & 0 & 8 \\ \hline \begin{tabular}{l} Dredging cost. \\ $, year 0 \end{tabular} & 5 & 12 \\ \hline \begin{tabular}{l} Annual M\&O, \\ \$/year \end{tabular} & 1.5 & 0.8 \\ \hline \begin{tabular}{l} Recurring \\ dredging \\ cost, $ \end{tabular} & \begin{tabular}{l} 2 each 6 years \\ with increase of \\ 10% each time \end{tabular} & \begin{tabular}{l} 1.2 each 4 years \\ with increase of \\ 10% each time \end{tabular} \\ \hline \begin{tabular}{l} Annual disbenefits, \\ \$/year \end{tabular} & 4 & 7 \\ \hline \begin{tabular}{l} Annual fees: \\ number of \\ 20 -foot. \\ STD at \\ \$/container \end{tabular} & \begin{tabular}{l} 5 million/year \\ at $2.50 each \end{tabular} & \begin{tabular}{l} 8 million/year \\ at $2 each \end{tabular} \\ \hline \begin{tabular}{l} Commercial life, \\ years \end{tabular} & 20 & 12 \\ \hline \end{tabular}