Stormwater management is a key part of any modern development. SuDS tanks can form a significant part of the stormwater management plan.
Sustainable drainage design works on the principle of mimicking greenfield run off rates to mitigate flood risks. Hard surfaces prevent rain water infiltrating the ground, so developments need to provide attenuation to manage the run off. In tight urban sites where it is not possible to provide amenity SuDS such as attenuation basins or swales, an underground tank can provide an important part of the SuDS solution.
Geogreen Solutions install SuDS tanks for attenuation and infiltration projects throughout the UK.

Attenuation and Infiltration
Underground tanks are a common way to manage storm water. They allow a large volume of water in quickly, and then release it in a controlled way to mitigate flooding. In many areas the ground is permeable, so the tank is able to discharge into the ground, known as infiltration. Where the ground is unsuitable for infiltration a sealed tank may be used, which can then discharge at a controlled rate into a nearby watercourse or similar.
Plastic tanks have become increasingly common as they require very small amounts of space compared with gravel ditches or drainage pipes. They offer a large infiltration volume for a low weight. Other benefits of ABG systems include their high load capacity and durability.
