These items should have been caught by the building dept. Don't see how the contractor will be taking the heat on this. All were public works projects. Even though a mention was made about the building department in the article typically an IOR or multiple IOR's(Inspector's of Record) are hired to do all inspections for public works buildings and the local building department is not involved. If it were me I'd be pointing my finger at the IOR. Its his job to insure all components of a building are installed per plans and specifications.
It's great to see a trades guy with integrity. You should be running work