Grassmoor Lagoons - organic sludge bioremediation field trials

This publication is a case study of a field trial for the ex-situ remediation of coal tar sludges from disposal lagoons at Grassmoor, Derbyshire, prior to the redevelopment of this contaminated site. It describes the nature of the contamination found at the site and also the potential hazards resulting from the contamination. The unusual nature of the type and scale of contamination necessitated the need to assess a number of remediation techniques. The selection procedures used for appointing the field trials contractor and also the contractual framework used are described. Additional laboratory testing and monitoring enabled independent verification of the treatment process and an assessment to be made of residual contamination likely to remain at the end of the treatment programme. The outcomes of the field trials offer a financial assessment of the treatment process and present conclusions and the remediation methods used.