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CONTAMINATION ASSESSMENT

Ground Investigation Risk Assessment Reports

Ashdown Site Investigation can advise on all aspects of environmental assessment and site remediation.

Our engineering team can provide environmental desk study and quantitative contamination risk assessment reports that can be presented either individually or as part of a combined package along with geotechnical advice.

Quantitative risk assessments for soil and groundwater based contamination are carried out using both the CLEA model and Environment Agency methodologies.

Remediation Action and Gas Management Plans

The company has developed a comprehensive investigation and remediation design service to satisfy the most stringent requirements and comply with the latest standards and legislation.

We can provide method statements and remediation action plans for:

• the cleanup of contaminated sites;
• groundwater quality improvement schemes (including the use of quantitative risk assessment and groundwater modelling procedures); and
• passive and active ventilation systems for buildings constructed on gassing sites.

We have substantial experience in the investigation of former industrial and commercial sites including fuel filling stations, disused gaswork sites and landfills.

We are able to advise on the design of protection measures for buildings on gas contaminated land, including the preparation of gas management plans.

Site Supervision and Validation, Advice and Completion

Working closely with the regulatory authorities we can offer ongoing advice on environmental protection and health and safety measures during construction, including site inspections, monitoring and validation testing, together with the preparation of closure reports.

We regularly provide certification for NHBC “Contamination Satements”.

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