INDEPENDENT TRUCK DRIVER WAS PICKING UP QP MATERIAL. AS DRIVER WAS GOING DOWN 3M SERVICE ROAD HE FAILED TO NEGOTIATE A CURVE TO THE LEFT & DROVE OFF THE ROAD WITH RIGHT FRONT AND REAR WHEELS. AS HE TRIED TO GET BACK ONTO THE PAVEMENT, HIS TRUCK TIPPED OVER. LOCAL POLICE FOUND TRUCK DRIVER UNDER THE INFLUENCE OF ALCOHOL.