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ISO 9001
Enviro Technical Systems operate an ISO 9001 quality management system

CSWIP - Certification Scheme for Personnel.  A mark of competence for a wide range of people engaged in welding and/or inspection related jobs in building, operating, inspecting and repairing high integrity welded plant.
lloyd's Register
All welding technicians are certified according to the Scheme for Welding and Inspection Personnel (CSWIP) or Lloyd's Register

British Geomembrane Association member (BGA)
Member of the British Geomembrane Association (BGA)

Enviro Technical Systems
Royds Enterprise Park
Future Fields
Bradford
BD6 3EW
United Kingdom

Tel +44 (0)1274 677 577
Fax +44 (0)1274 675 777

This website is also available using the following url's:

Enviro Technical Systems

Attenuation Tanks (SUDS)

Storm water management is a critical component in a great deal of new build projects across the UK. Continuing urban development has led to a decrease in the natural drainage areas for rain water to return to streams and rivers, often leading to localised flash floods. These artificial surfaces can also lead to the water quality of natural watercourses being contaminated.

Attenuation tanks can alleviate these problems. Attenuation tanks act as storage for excess run-off water, storing the water beneath the ground and controlling when and at what rate the water is released into streams and rivers. From individual housing soakaways to large scale storage lagoons beneath car parks, attenuation tanks prevent flash floods and the damage they can cause, often aiding planning applications as a result. 


How attenuation tanks work

Perforated polypropylene units with 95% void space are fully encapsulated with an impermeable geomembrane, with welded and tested joints. The geomembrane is protected by an outer layer of geotextile, nominally 300g/m2. The unit is then connected to a series of inlet and outlet pipes, all fully sealed and tested by trained technicians.

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