Remediation methods for soil groundwater or vapor are defined in many ways. It is most commonly defined by two key approaches. Active remediation systems provide ongoing reduction in mass toxicity and mobility. Passive remediation incorporates processes in natural systems to reduce COCs. The value of passive systems is that it is more cost effective and better for the environment, but time involved to reach remediation goals can be longer.
Remediation can also be expensive- and therefore careful evaluation prior to choosing a remedial approach is recommended.
For more complex sites, BMS often employs preliminary risk assessment for sites where an acceptable "risk-to-receptors” demonstration is less costly than active or passive remediation approaches to meet remediation goals. Recent trends in public policy have made risk assessment an advantageous option for many facility owners.
BMS is also experienced with employing institutional and engineering controls to supplement remediation activities, reducing the overall cost of remediation.
Where remediation is required, BMS will complete feasibility and pilot studies, combining turnkey field support and professional consulting services, to evaluate remediation strategies and develop the most feasible and cost effective approach to bring a site to No Further Action (NFA) status from the associated regulatory agency.
BMS personnel have employed the following remedial techniques:
- Dual phase extraction (DPE)
- Soil vapor extraction (SVE)
- Air sparging
- Natural Attenuation-Ground water
- Source area removal
- Engineering and administrative controls.