Biddeford will use a grant from the Elmira B. Sewell Foundation to make Clifford Park safer and more accessible to users, city officials announced Monday. The $52,500 grant from the foundation’s Healthy People, Healthy Places program will allow several city departments and the Heart of Biddeford blaze new trails, clean up debris more easily and add signs to increase safety on the trails. Clifford Park, a short walk from downtown Biddeford, is a 140-acre park in the middle of the city.