Celtic Technologies | Neston. Remediation under Part 2A
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Neston

The Environment Agency had determined the Neston site as Contaminated Land under Part 2A of the Environmental Protection Act 1990. Former use as a tank washing facility had resulted in chlorinated solvents (primarily cis 1,2 dichloroethene and vinyl chloride) and hydrocarbons (primarily benzene, toluene, ethylbenzene and xylenes – BTEX) impacting the underlying Sherwood Sandstone, a major regional aquifer. Celtic carried out a detailed assessment of the sandstone bedrock to identify free and residual contaminants locations, and based on this designed a remediation approach to maximise contaminant mass recovery through multi-phase, or high vacuum extraction.

Close out was achieved through demonstration of asymptotic hydrocarbon mass recovery in free, vapour and dissolved phases.