Solidification and stabilization are treatment technologies that achieve remediation goals by mixing contaminated materials with reagents that reduce leaching, and thus mobility, of the contaminants. Rain, stormwater runoff, and groundwater flow can leach contaminants from soil, sludge, and other wastes in the environment and transport them to groundwater or nearby surface water bodies, increasing potential exposure pathways for human and ecological receptors. The CLU-IN Solidification/Stabilization (S/S) Focus Area has been updated to reflect the current state of the science, including new screening questions for considering S/S as a remedy.

In line with the renewed Agency emphasis on sustainability and climate change resilience and mitigation, the Superfund Program is proceeding to update the very popular green remediation (GR) best management practice (BMP) fact sheets for the most common remedies in the Superfund program. The goal of these fact sheets is to share technical information on best practices that build sustainability into contaminated site cleanup operations across the portfolio of remediation approaches. The updated GR fact sheet on soil vapor extraction (SVE) and other air-driven systems outlines BMPs that can help minimize the environmental footprint of constructing, operating, maintaining and monitoring cleanup remedies involving SVE, air sparging or vapor intrusion mitigation technologies.

In line with the renewed Agency emphasis on sustainability and climate change resilience and mitigation, the Superfund Program is proceeding to update the very popular green remediation (GR) best management practice (BMP) fact sheets for the most common remedies in the Superfund program. The goal of these fact sheets is to share technical information on best practices that build sustainability into contaminated site cleanup operations across the portfolio of remediation approaches. The updated GR fact sheet on integrating renewable energy describes and illustrates use of BMPs involving applications of a site's natural solar, wind or geothermal resources at a wide range of scales. It also addresses the need to assess and optimize energy usage of an existing or anticipated remediation system in advance of renewable energy planning and describes approaches to purchasing green power generated by other parties.