Project: Collier Center Project Details Contractor / Owner The Opus Group Services Surface Demolition & RemovalsAggregatesLand Clearing & GrubbingSteel Beam & LaggingSite Work / Site DevelopmentImport / Export SoilMaterial Transportation / Trucking ServicesDust ControlMass ExcavationShoring / Earth RetentionSite Cut / FillStructural Excavation & BackfillBackfill / Embankment Fill Market Commercial / Retail Location Phoenix, Arizona Completion Date 1999 ImageCollier Center – Phoenix, AZ