Complex sentence: In 2008, the site--previously a driving range--was prepared for construction, and a groundbreaking ceremony was held on 29 November 2008, after the tower had passed an environmental impact study.
Split into simpler sentences: In 2008, the site--previously a driving range--was prepared for construction. A groundbreaking ceremony was held on 29 November 2008, after the tower had passed an environmental impact study.