2000mm Concrete Soakwell Base 150mm Thick Soakwell Perth Base Weight: 1000kg Prevents 1800mm width soakwell movement while preventing the ability to drain vertically through the bottom of the soakwell. In final soakwell shop payment page please nominate whether the concrete base should have no weephole, a 230mm weephole or a 600mm weephole. Ideally suited to soakwell liners Perth or soakwell sumps in clay areas of Perth Western Australia. Usually used in stormwater systems where stormwater systems are discharged into local council stormwater systems. Usually used in stormwater systems where stormwater systems are discharged into local council stormwater systems.