Klein said he is happy with officials' response to public concerns.
County Executive Ken Ulman, Del. Elizabeth Bobo and state Sen. Edward J. Kasemeyer have voiced concern about proposed traffic changes to accommodate the Riverdale project.
In addition to traffic problems, residents have raised environmental issues, and they say they fear potential damage to historically significant sites from the proposed housing development.
Some have criticized the evolution of the project through the years. In 2004, a project proposed by developers Dale Thompson and Donald R. Reuwer called for 140 townhouses and a two-story office building on the site. By moving a sensitive planning boundary, the project gained immediate access to more than 400 housing allocations in Columbia.
Without the zoning adjustment, the project would have to wait years because housing allocations in the southeastern district had been taken by the Maple Lawn, Maryland and Emerson developments.
june.arney@baltsun.com