Businesses have begun calling Columbia Borough for more information about its proposed light-industrial business park even though the borough has yet to purchase the land. The borough recently unveiled a timeline that would have it buy in July the 58-acre former McGinness airfield property near Manor, South Ninth and South 12th streets. Plans are to develop about 40 acres into an innovation and technology campus. The rest of the space is expected to be used for a hiking trail through a nature preserve and a childrenâs playground. Construction, which could begin in 2022, hinges on the borough council approving the purchase and development, which borough manager Mark Stivers has advanced as an investment in the future.