Envirotreat were commissiioned by Chalcroft to undertake additional site investigation.
Part of the investigation included an assessment of stockpiled soils onsite and the ground underlying the stockpiles, Envirotreat undertook a comprehensive trial pitting exercise and prepared a factual report summarising our finding.
Additionally, based on historical site investigation indicating elevated PERC in the groundwater in the southern part of the site. Further investigative works were undertaken, including the delineation of soil hotspot (shown to be impacted with PERC), installation of groundwater monitoring points, low-flow monitoring, hydraulic conductivity testing, detailed quantitative risk assessment (DQRA) and cost benefit analysis. Acceptance by EA that groundwater remediation would not be viable. CBA supported source treatment only.
Envirotreat produced a remediation Method Statement for the remediation of the site which gained regulatory approval.
Trial Pit excavation under stockpile