CDC performs site observations during construction as a quality assurance measure. CDC: Attends preconstruction Coordination Meetings with building enclosure subcontractors prior to start of building envelope installation. Observes installation of building enclosure systems, and prepare detailed reports addressing conformance with the Architect's design intent, Subcontractor submittals, and Manufacturer recommendations. Maintains an on-going list of deficiencies. Provides field testing services, or witness testing provided by others, and prepare detailed photographic reports documenting test protocol and test results.