sentences:  Community efforts to construct a larger park were impeded both a lack of funds and the absence of any suitable site.After fighting for decades for the construction of a new park in Chinatown, civic leader Ping Tom formed the Chinese American Development Corporation (CADC), a private real estate firm, in 1984.Five years later, the firm purchased a former Santa Fe rail yard and began construction on Chinatown Square, a $100 million residential and commercial development project.