System C – no infiltration:
Suitable for contaminated land where all the rainwater is captured in the sub-base and diverted away via outlet pipes to other drainage systems such as swales, ponds and sewers. EPS Universal Membrane, an impermeable, flexible membrane is placed beneath the sub-base and up the vertical sides effectively forming a storage tank for the rainwater soaked through the paving layer. This prevents contaminants in the ground from being washed into watercourses.
