Original sentence: Clay has been brought from several places in and around the city, including the soccer field at Centennial Elementary School and around Discovery Middle School.In addition to the sandbags the construction of the dikes protecting the city has required large amounts of clay
Edited sentence: Clay had been brought from several places in and around the city, including the soccer field at Centennial Elementary School and around Discovery Middle School.In addition to the sandbags the construction of the dikes protecting the city required large amounts of clay