The contractor required the system be installed prior to the start of construction from the original ground surface, so a 700 ft. wellpoint system with 23 ft. deep wellpoints was installed. Griffin utilized vacuum wellpoints to remove as much groundwater as possible from the excavation to help limit the flows needing to be sumped. With such low flows being pumped from the excavation and the long duration the system was needed, the system was also winterized by Griffin using a glycol heating system and concrete blankets to keep the system from freezing.