CivilPlus were engaged to construct a 180,000L Spelceptor tank at the RAAF Base fuel farm, this included precast items for the fire trap and anchor blocks. The 4m deep excavation was sheet piled to assist with the dewatering and also to provide a safe work area for personnel. The tank is to be backfilled with a combination of concrete and stabilised sand. A complete concrete topping slab is required to ensure that the integrity of the tank will be maintained.