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Established 2004

Ruddlesden geotechnical

Ruddlesden geotechnical provides ground investigation, geotechnical consultancy and contamination assessment services.

Based in Exeter, but covering the whole of the UK, albeit primarily concentrated in the South West, Ruddlesden geotechnical was formed in 2004.

Ruddlesden geotechnical works on behalf of a wide client base, including local, regional and national housing developers, housing associations, commercial developers, building contractors, structural and civil engineers, architects, building consultants, quantity surveyors, local authorities and private individuals.

Development projects range from single dwellings and extensions to large housing estates, multi-storey flats, offices, industrial units, roads, slopes, schools, hospitals and basements.

The services and projects listed on this web-site provide an indication of those undertaken by Ruddlesden geotechnical, but others are carried out. If your requirement is not readily identifiable on this web-site, please contact us as we may still be able to help you.

  • AGS
  • Constructionline
  • CSCS
  • SMAS
  • ECFC trust

Latest news

Recent projects

  • Latest news

    13 Jul 2026

    Geoff’s birthday treats!

    We recently celebrated a special birthday of Geoff Davis, in a place that is close to his heart: the East Devon coast.He treated us to his knowledge of the geology and landslide systems in the area, and we treated him to an ice cream on the beach!

    Geoff’s birthday treats!
    Geoff’s birthday treats!

  • Recent projects

    Residential Redevelopment of Former Garage

    A human health risk assessment at a proposed residential development site in North Devon was undertaken as part of a wider scope of works comprising a Phase 1 and Phase 2 contamination assessment, followed by the production of a remediation strategy and subsequent validation testing. The Phase 1 assessment indicated that the site was a former garage, part of a larger historical coach depot. The Phase 2 contamination investigation, which comprised windowless sample boreholes and contamination laboratory testing, recorded elevated levels of total petroleum hydrocarbons (TPH)and lead within both made ground and underlying natural soils, associated with a remnant underground storage tank (UST), fuel lines and an off-site tank, within the confines of the former coachworks. The contamination risk assessment indicated the recorded levels of contamination to potentially be harmful to human health, given the proposed residential land use. To protect end users, Ruddlesden recommended that all of the tanks and associated fuel lines be remove, and that all proposed garden/ soft-landscaped areas be capped with a minimum thickness of 600mm topsoil and subsoil underlain by a geotextile membrane. All of Ruddlesden’s reports were approved by the local authority’s environmental health officer and the contaminated land planning condition was satisfied.

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  • Recent projects

    Contamination Remediation Strategy Outlines Requirements for Residential Development

    In order to satisfy a planning and NHBC land quality conditions, Ruddlesden produced a contamination remediation method statement, which summarised the contamination risks across the site and set out a clear and structured approach for remediating the site for the developer, to satisfy regulators and warranty providers. Ruddlesden geotechnical had previously undertaken a Phase 1 and Phase 2 contamination investigation and assessment, which had indicated that the site was covered by surficial thicknesses of made ground containing loose fibres of chrysotile asbestos. Additionally, several underground fuel storage tanks and a historical air raid shelter, filled with asbestos containing materials (ACMs). The remediation strategy included excavation and removal of the underground fuel storage tanks and ACM, to be undertaken by licensed contractors, together with capping of garden areas with 600mm of clean soil underlain by a geotextile membrane. The remediation strategy also outlined the validation testing requirements, which were subsequently undertaken by Ruddlesden geotechnical.

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