M74 EXTENSION, GLASGOW CASE STUDY REMEDIATION OF CHROMIUM COPR CONTAMINATION £1,400,000 PROJECT VALUE: PROJECT TIMESCALES: 8 MONTHS CHALLENGE: ERS was appointed to stabilise soils contaminated with Chromium Ore Processing Residue (COPR) which was otherwise destined for landfill. Working in conjunction with the Client and SEPA, a stabilisation strategy was agreed to reduce the soil leachability to agreed levels and reduce the project’s Embankment Material Deficit. SOLUTION: OUTCOMES: • 100,000 tonnes of material stabilised • Leachability targets exceeded • Treated material re-used on site as fill material for embankments • Treatment method saved client £4,000,000 ERS completed treatability trials in the company’s Bishopbriggs laboratory to define a proprietary mixture of stabilisi

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