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Remedial Design

Remedial Action Plan

Site preparation

Site remediation

Site remediation by excavation

Site remediation by chemical injection

The Bodhi Group advocates monitored natural attenuation if the source contamination is no longer present and residual concentrations are amenable to MNA. Containment is also a preferred approach with capping and institutional controls as part of the remedy selection. As a last resort, active efforts may be considered, including in-situ treatment or removal.

Steps for remedy selection include:

  • Site characterization and conceptual site model
  • Source contamination presents imminent threat to human health and the environment
  • Containment – cap in place, chemical isolation, grout curtains, institutional and engineering controls, land use covenants, and covenants to restrict use of property (soil and groundwater), vapor intrusion mitigation measures
  • In-situ injection of chemical oxidation or reduction agents to reduce chemicals of concern to less toxic breakdown products
  • In-situ injection to promote anaerobic reductive co-metabolic dechlorination of solvent plumes in groundwater
  • Source removal by excavation for off-site disposal
  • On-site source removal, treatment, and reuse
      Example projects:

Oakland Global and Outer Harbor Intermodal Terminal

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