Complex sentence: These uses left behind a cocktail of contaminants, including tars, phenols, heavy metal, ammonia and boron.Extensive redivelopment took place over 10 years to reclaim the site, including the building of a new access road to open the area up.
Split into simpler sentences: These uses left behind a cocktail of contaminants, including tars, phenols, heavy metal, ammonia and boron. Extensive redevelopment took place over 10 years to reclaim the site, including the building of a new access road to open the area up.