Memorandum
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design and construction process. The design-build approach did provide an innovative
solution at a competitive marketplace cost.
• Discretionary changes in project scope following project definition did not go through a
consistent process of change management.
We will review these lessons with our staff and with the Airport senior management team. Given
the airport’s continued rapid growth and need for capital improvements, the time pressures will
continue; our challenge is to continue to work with the project sponsors to identify the subset of
projects which are truly time critical, to resist our own and customer time pressure to allow
sufficient time for all projects to complete project definition, and to have the discipline to
reevaluate when project conditions and constraints change significantly. Aviation Project
Management and Aviation Capital Programs are working to adopt a formal project change
management process, which will cover changes during project design in addition to updating the
process for changes during construction, by the end of 2019. We will stress the importance of full
end user and stakeholder involvement in concept development of projects, including the future
permanent fire station location under the Sustainable Airport Master Plan, to our staff.
COST ESTIMATE, SCHEDULE AND RISK COMMUNICATION
One-time Commission approval of project design and construction is allowed by Resolutions
3734, 3628 and 3605 (the Resolutions) but is rarely sought. Prior to project design, when the
Resolutions require Commission authorization of a project, the industry standard for
construction cost estimate accuracy (AACE International Recommended Practice No. 56R-08,
Cost Estimate Classification System – As Applied for the Building and General Construction
Industries) gives a broad range of possible costs depending on the level of project definition. Early
project definition estimates can vary greatly – from -20% to -30% on the low end and +30% to
+50% on the high end. The estimate accuracy range margins become smaller as the project is
further defined and then designed. The typical Engineer’s estimate range used for construction
bids is -3% to -5% on the low end and +3% to +10% on the high end.
In this project, the project team sought one-time Commission approval of project design and
construction to expedite the project. However, the team had not taken sufficient time to fully
define the scope/requirements and communicate uncertainty or project risks to budget and
schedule as a result. The tradeoffs between project cost, schedule, and scope were ultimately
resolved in a way that will meet end user and stakeholder scope requirements but at a cost and
schedule that does not meet the expectations we had originally set with the Commission.
As most recently seen in the October 22 Commission action request for early authorization of the
Checkpoint 1 relocation, when requested to move ahead without full project definition, we were
trying to ensure that non-standard approaches to project authorization include clear
communications of uncertainties and risks. We are also increasing communication of project risks
in relevant Commission project authorization requests.
COMMUNICATIONS TO MANAGEMENT OF PROJECT TEAM CONCERNS
Successful project delivery involves integration of expertise from multiple airport and corporate
departments. Project managers must work with the project team to evaluate and resolve
conflicting input and project objectives. Where project team members believe their concerns are