Specifications include, but are not limited to: The Work comprises of two options: The first is to remove, dispose and install eight (8) new passenger boarding bridges, new pre-conditioned air (PCA) units, new 400 Hz Ground Power Units (GPU),new potable water cabinets (PWC), shutdown coordination, and other items of work not mentioned above, as required by the plans and specifications, and completed in place. The second option is to refurbish eight (8) existing passenger boarding bridges, furnish new pre-conditioned air (PCA) units, new 400 Hz Ground Power Units (GPU), new potable water cabinets (PWC), shutdown coordination, and other items of work not mentioned above, as required by the plans and specifications, and completed in place.