ETOBICOKE, Ontario - Robert S. Evans, the owner of Marsh Side, has appealed the disqualification of his horse from first place in last Sunday's at Woodbine. Marsh Side, trained by Neil Drysdale, hit the wire a half-length in front under jockey Javier Castellano but the stewards ruled that he had interfered with third-place finisher Quijano and subsequently fourth-place finisher Champs Elysees when he came in with a furlong to run. Garrett Gomez, the rider of Champs Elysees, who was beaten 1 1/4 lengths, lodged claims of foul against both Quijano and Marsh Side. Marsh Side was placed fourth, moving Just as Well to first, Quijano to second, and Champs Elysees to third. Castellano, who was given a three-day suspension which was to begin this Sunday and continue Wednesday and Thursday, has obtained a stay after lodging an individual appeal. The appeals will be heard by the Ontario Racing Commission at a date to be announced.