UNDERHILL, Al (Alton) - Owner of Al Underhill and Associates Engineering Consultants Peacefully at his home with Harvena by his side on Monday, June 24, 2013. Al, loving step-dad to Kim and her husband Bruno and Bonnie. Cherished Grandpa to Jamie and Jay, Stephanie and David, Keifer and Cole. Dear brother of Debbie (Bruce), Eric (Debbie), Velma (Stuart), Lanny (Giselle) and Shawn (Cindy). Brother-in-law to Marlene (Bob) and Sharon (Ron). Friends may visit at MARSHALL FUNERAL HOME, 10366 Yonge Street, Richmond Hill (4th traffic light north of Major Mackenzie Drive) on Friday, June 28th 2-4 and 7-9 p.m. A Time of Remembrance will be held at 8:30 p.m. Cremation has taken place.