Persons against whom grounds for exclusion exist may not be entrusted with part of the works or services of a concession contract.
When a person against whom grounds for exclusion exist is presented at the stage of the procedure for the award of the concession contract, the conceding authority requires him to be replaced by another economic operator who is not the subject of grounds for exclusion, within a period of ten days from receipt of this request by the candidate or tenderer, on pain of exclusion from the procedure.