Sustainability - Stakeholder - ALS Environmental

The M25 design, build, finance operate project

ALS Environmental supplied testing of contaminated land services for the Connect Plus Consortium on the M25 widening projectIn 2009 the Highways Agency commenced works to add an additional 40 miles of capacity on the M25 motorway to allow for the increase in traffic figures expected for the 2012 Olympic Games.

The Highways Agency employed the Connect Plus Consortium, a Balfour Beatty Skanska Joint Venture, to carry out the work between Junctions 16 and 23, and Junctions 27 and 30, in addition to refurbishment work on the A1(M) Hatfield Tunnel. 

The project is part of a 30 year concession which will include the widening of other key sections of the M25, operation and maintenance services and lifecycle replacement of the whole road, including 250 miles of strategic road links in and out of London. 

A bespoke suite of analytical parameters were needed to monitor against site-specific thresholds, for soils, waters and leachates, for which ALS Environmental was employed as partner for this aspect of the project. 

ALS environmental have a wide knowledge and experience within the contaminated land industry and expertise when it comes to dealing with significant infrastructure investment programmes. 

The company supplied testing of parameters for chlorine, phenols, cyanide, PCBs and VOCs on the site. Its technical expertise and consistent service delivery ensured that all analysis was carried out swiftly, allowing the project delivery deadlines to be met. 

Contact Us

ALS Environmental

Torrington Avenue



T:  024 7642 1213

or :

Units 7 & 8

Hawarden Business Park

Manor Road








We had potential water quality problem due to the actions of a third party and needed samples taken as a matter of urgency. Although this was outside the strict terms of our contract with ALS they were able to provide a sampler on a Friday afternoon, get the samples taken and returned to their labs for analysis.

They backed this excellent performance up by emailing us the sample results over the weekend. All in all a great piece of customer service!

Bob Windmill, Head of Water Quality, Independent Water Networks

ALS are a really easy company to deal with their professional attitude to the range of services they provide for us is second to none. The people there listen carefully and respond very quickly to our requests , we have dealt with them for the last eight years and their customer advisors understand our business and not only their own.”

Ken Begg, Director, Aberdeen Sampling Ltd
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