Ruddlesden geotechnical


Validation/ Verification Testing of Contamination Remedial Measures

Validation/ verification testing is required to confirm that the recommendations provided within the contamination remediation strategy/ method statement are followed and that the site is suitable for the proposed land use.

Following remediation, this might take the form of trial pits, to check sufficient depth of clean soil is present in garden areas, and/ or groundwater sampling, to demonstrate that remedial targets have been met following treatment/ remediation.

Evidence of upgraded water supply pipesmight also be necessary and the gas protection measures may need to be verified by a specialist third party contractor.

Case Study

Validation Testing in Somerset to Satisfy NHBC and Local Authority

Ten years after carrying out the original contamination investigation and assessment, Ruddlesden geotechnical returned to the site to carry out the validation testing of the remedial works.

The validation testing included hand-excavated trial pits in garden areas, to obtain samples for laboratory testing to confirm the cleanliness of the capping soil in garden areas and to provide a photographic record of the depth of the capping layer, as well as documentary evidence of the gas protection measuresand upgraded water supply pipes.

The site visit was attended promptly and the laboratory testing was expedited, following which the report was issued without delay, to ensure they were no problems with sales.

  • AGS
  • Constructionline
  • CSCS
  • SMAS
  • ECFC trust