Excavation and Site Remediation
Excavation of soil, sediment or waste material is often undertaken at contaminated sites to address immediate risk to human health or the environment; prepare for implementation of remediation technologies and construction of supporting infrastructure; and address contaminant hot spots in soil or sediment.
The excavation and subsequent backfilling processes rely on use of heavy earth-moving machinery and often involve managing large volumes of material. Many opportunities exist to reduce the environmental footprint of the various cleanup activities and improve ultimate restoration of the disturbed land, surface water and ecosystems.
The United States Environmental Protection Agency (U.S. EPA) Fact Sheet outlines specific best management practices (BMPs) that can be used to minimize the environmental footprint concerning emission of air pollutants and use of water, energy, and other resources at excavation sites. The refined set of BMPs is based on recent experiences reported by regulators, property owners, cleanup service contractors and other stakeholders in the cleanup community.
Sites with Leaking Underground Storage Tank Systems
The U.S. EPA estimates that approximately 65,450 releases of petroleum or hazardous substances from federally regulated underground storage tanks (USTs) had not yet reached the “cleanup completed” milestone as of September 2018. The Association of State and Territorial Solid Waste Management Officials (ASTSWMO) estimates that in 2017, alone, state cleanup funds collectively spent approximately $1.113 billion in cleaning up UST releases.
Use of green remediation best management practices (BMPs) can help minimize the environmental footprint of cleanup activities at UST-contaminated sites and improve overall outcomes of the corrective actions. In accordance with the EPA Principles for Greener Cleanups, BMPs outlined in the updated “Green Remediation Best Management Practices: Sites with Leaking Underground Storage Tanks” fact sheet are intended to complement federal requirements for corrective actions at UST-contaminated sites and may enhance state-administered UST program requirements.