Environmental Investigation & Site Remediation

---

Lexicon has experience with a variety of soil site remediation techniques, including soil excavation, soil vapor extraction (SVE), in-situ soil treatments/stabilizations and engineered barriers. When it comes to environmental investigations and remediation, there is no one size fits all approach. 

Lexicon is experienced in evaluating site-specific factors and implementing remediation strategies that work for all parties involved. For example, commercial property constraints at a former dry cleaning site required coordination with multiple contractors, remediating responsible parties, the property owner, tenants, insurers and attorneys to coordinate tenant relocation, building structural support and excavation beneath the onsite structure in order to achieve regulatory compliance.

At the heart of groundwater site remediation is understanding contaminant source areas and their mitigation. Afterwards, there are various options for treating groundwater, such as enhanced fluid recovery (EFR), in-situ chemical oxidation (ISCO), in-situ chemical reduction (ISCR), aquifer injection of activated carbon, installation of permeable reactive barriers (PRBs) and the common end-point remediation, monitored natural attenuation (MNA).

Groundwater remediation should be tailored to the type of contaminant(s), aquifer media type (e.g. soil texture, rock, etc.), geochemical conditions and remediation goals/standards. Lexicon helps develop a comprehensive plan to evaluate and implement the most cost-effective groundwater remediation approach.