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Tier 2--Weighted-Matrix Delivery Decision Approach 81 ect goals should not change, these overlaps and gaps will need to be removed for the develop- ment of selection factors. Step 1 in the Tier 2 approach allows and encourages editing of these goals as they are rewritten into selection factors. In developing selection factors from the project goals, owners should consider the following questions: Are there significant overlaps in the project goal statements that can be revised to make them more independent? Are there goal statements missing that are needed to define the ultimate project success? Can any of the goals be stated more concisely? The Tier 1 approach provides an opportunity to review 24 pertinent project delivery issues. However, in the Tier 1 approach all of the issues are treated as equally important. Upon review- ing the issues, owners will certainly find that some issues are more important than others. A small number of issues are likely to be important to the final project delivery decision. The next task in Step 1 is to select up to 7 of the 24 pertinent project delivery issues to exam- ine and develop into selection factors. The owner should select the pertinent issues according to the following: The pertinent issues should be independent of the project goals, The pertinent issues should be independent of each other, and No more than seven pertinent issues should be chosen. The final task of Step 1 is to consolidate the goals-based and issues-based selection factors into one comprehensive list. The next step in the Tier 2 process involves a ranking of the goals and critical issues; therefore, one combined list is required. Delivery Selection Process for the Example Project--Step 1. The selection factors for the example project were determined to be the following: Project complete by November 1, 20XX. Cost not to exceed $1.5 billion. Environment enhanced through less traffic congestion and pollution. Staffing requirements minimized during design and construction. This list of selection factors includes project goals relating to time, cost, and sustainability and a pertinent issue regarding agency staffing. While other issues, such as technical quality, main- tainability, third-party agreements, and so forth undoubtedly exist for the project, the list of selection factors includes the goals and issues by which the success of the project will be prima- rily measured at its completion. Step 2. Weight Selection Factors The Tier 2 approach is based on the premise that owners can establish a unique hierarchy of selection factors. In other words, success will be defined differently for each project and the cri- teria for success can be described by a few key selection factors. The objective of Step 2 is to weight the list of selection factors. Step 2 involves first ranking and then weighting the selection factors. There are numerous methods that can be used to achieve a weighted ranking of the factors. The most straightforward method is developing a ranking and weighting through discussion among project decision mak- ers. The decision will by nature be somewhat subjective, so a diligently documented group deci- sion is preferable.