6a Supp
Item No.: 6a_supp Meeting Date: October 7, 2014 PreConditioned Air (PC Air) Background What: PC Air project installed a system of chillers, heaters, and pipes that provide both the heating and cooling to the aircraft from a central plant at the Airport Why: Environmental Benefit: Aids in the elimination of carbon dioxide generated by the aircraft APUs equivalent to about 8,000 cars on the road, or 40,000 metric tons of greenhouse gases Economic Benefit: The benefit to the airlines is the potential annual savings of 5 million gallons of jet fuel Design Schedule Original Actual Start: 06-03-2009 07-19-2009 Finish: 05-10-2010 05-10-2010 FAA Grant application deadline required Notice to Award by September 13, 2010 Design schedule accelerated by 6 weeks to meet FAA deadline for a ~ $22M grant Result, went out to bid with design about 80% Additional Project cost $14,540,643 Construction Schedule Notice of Award 09/13/2010 Notice to Proceed 11/05/2010 Original completion 12/11/2012 Actual completion 05/16/2014 Completion delayed by issues with piping design Budget May 2010 $40,600,000 Payback 1.4 years* Sept 2014 $55,140,463 Payback 2.4 years* *Payback calculated on total Port costs excluding $21.9 million grant. Cost growth Regulated Materials $ 500,000 Scope changes $ 3,500,000 Errors & Omissions $ 9,000,000 Schedule Impacts $ 1,540,463 Contractor's extended Overhead Additional Port soft costs This request Final Change Order from Contractor Chilled Water Piping Concourse A piping insulation and anchors and guides (Scope Change) Concourse B, C and South Satellite anchors and guides (Replacement) Complete 4 gates (S-3, S-16, D-1, and N-6) Unfinished Gate N-6 Typical Finished Gate Solid Guide Illustration Installed on Concourse A, B, C and South cold water legs Frosty Pipe Guide The problem with solid connection on cold water lines Insulated Anchor Illustration Recommended to fix icing issue on Concourse A, B, C and South cold water legs Insulated Pipe Anchors No ice Conclusion Justification for project still valid. Positive Return on Investment, and rapid payback Winner of AGC 2014 Build Washington and ENR Airports/Transit Best Project Awards 20 degree chilled water piping requires insulated anchors and guides Cost of omissions are project costs
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