Drug and alcohol tests on AWPR Project: FOI release

I have an FOI request related to drug and alcohol tests at the AWPR site - Aberdeen Western Peripheral Route/Balmedie to Tipperty (AWPR/B-T) Project.

• How many workers have failed drugs and alcohol tests since construction began, broken down into individual years?
• What positions did these workers have?
• What action was taken against them?
• Have all tests been random or have any been the result of a blanket test?
• If there has been any blanket tests, why were they introduced?