Downstream Defender®  
   
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Case Studies

Horsham Park & Ride C0609
The Hop Oast Park & Ride facility, designed in line with Horsham District Council's policy of providing sustainable infrastructure and services, is used to reduce long stay parking in the town centre. Adding further to its green credentials, Horsham District Council installed a porous pavement with a Hydro Stormwater Package System to ensure controlled... Read more...

Crooked Billet A0609
A precious part of London's remaining medieval common land has been saved from the threat of pollution from nearby highways with a simple solution using Hydro's Downstream Defender®. Mouchel Parkman, on behalf of the Highways Agency, contacted Hydro about the innovative hydrodynamic vortex separation device... Read more...

RMA Outfall F1201
Hydro supplied a 6 m diameter Downstream Defender® to Surrey Heath Borough Council. The purpose of the Downstream Defender® was to honour an agreement between Surrey Heath Borough Council and the Royal Military Academy to intercept grits and sands from highway and domestic surface water before passing to a petrol interceptor prior to discharge into a nearby... Read more...

Chemical Analysis F1201
A 4 litre sample of sediment was collected from a Downstream Defender® during an annual inspection and pump out. The sediment sample was divided into two equal parts, one was taken to a soils laboratory to determine the particle size distribution and the second was taken to an environmental laboratory for chemical analysis... Read more...