7 Pa. Code § 305.33
(b) The Stewards may impose any of the following penalties on a licensee for a violation of these rules:
(d) The Stewards, on an emergency basis, shall have the power to exclude or eject from the racetrack premises and enclosures of the licensed racing entity any person who:
(i) In addition to any penalties imposed upon any owner, trainer, veterinarian or other licensee as a result of a medication or drug positive, after notice and an appropriate hearing, the horse which tested positive for the prohibited substance, shall be placed on the Steward’s List and shall be ineligible to participate in racing for the following period of time: