Original sentence: It had to be regenerated in 2002 as the FA closed the Kop and the Compton street terrace for saftey reasons.The stand once had 2 teirs (the bottom being terracing) but was put out of use some time in the last 10-30 years
Edited sentence: It had to be regenerated in 2002 as the FA closed the Kop and the Compton street terrace for safety reasons.The stand once had 2 teirs (the bottom being terracing) but was put out of use some time in the last 10–30 years