Ruddlesden geotechnical

Groundwater/ Controlled Waters Risk Assessments

The risks of contamination to the water environment (controlled waters) are commonly considered in conjunction with those to human health, often to satisfy a planning requirement.

In common with human health risk assessments, controlled waters risk assessments initially comprise a desk-based preliminary risk assessment, to produce the initial conceptual site model (CSM) and identify the source-pathway-receptor linkages, often followed by an intrusive investigation, to allow a qualitative risk assessment to be made.

Depending on the findings of the qualitative assessment, Ruddlesden can undertake a quantitative controlled waters risk assessment (also known as a P20 assessment), using borehole, laboratory and hydraulic data to model the anticipated levels of contamination at controlled waters receptors and to derive on-site remedial targets.

Case Study

P20 Groundwater Risk Assessment Demonstrates No Remediation Required

At a former engineering works near Exeter, elevated levels of polyaromatic hydrocarbons (PAH) and total petroleum hydrocarbons (TPH) were recorded in both the soil and groundwater beneath the site.

Case Study

Pre-Purchase Phase 1 Geotechnical Assessment Provides Cost-Effective Information

Ruddlesden geotechnical were commissioned to undertake a Phase 1 Geotechnical Assessment on behalf of a national housebuilder at an existing golf course in Dorset.