Concerns Rise Over Lack of Soil Sampling After Palisades and Eaton Wildfires
The U.S. Army Corps of Engineers (Army Corps) has announced that it will not conduct soil sampling at private properties affected by the recent Palisades and Eaton wildfires in Los Angeles County. This decision has raised concerns among experts and health officials about the potential risks of lingering contaminants and the extent of hazardous ash spread.
Impacts of Wildfires on Soil Contamination
Severe wildfires can cause significant chemical changes in soil, potentially affecting water contamination, air quality, and plant growth. Wildfire smoke and ash can deposit heavy metals, polycyclic aromatic hydrocarbons (PAHs), and other harmful substances into the soil.
Past Wildfire Soil Sampling Efforts
In previous major wildfires in California, federal and state agencies have conducted soil sampling to confirm that contamination levels are within acceptable limits. Soil sampling is used to verify that soil remedial objectives are met and contaminants do not exceed state standards.
Army Corps’ Decision
However, the Army Corps has stated that soil sampling will not be part of its private property removal program for the Palisades and Eaton wildfires. The agency believes that excavating the top six inches of soil will remove any surface hazards that landed on the soil.
Experts’ Concerns
Experts argue that further testing is necessary to fully assess the risks posed by soil contamination. They note that pollutants can remain in hilly areas and be carried by rainwater. Without additional soil sampling, it is difficult to determine the extent of the problem and the potential health impacts on residents.
Absence of Confirmation Soil Testing
The Los Angeles County Department of Public Health (LACDPH) has expressed its support for confirmation soil testing after debris cleanup. The department has compiled data from other agencies and institutions on post-fire air, soil, and water risk assessments.
Lead Contamination
Researchers from the University of Southern California (USC) have tested street dust in areas affected by the Eaton Fire. They found high concentrations of lead in the burn scar, indicating the potential for lead exposure in those areas.
Health Risks of Soil Contamination
Lead exposure can cause serious health problems, including neurotoxic effects. It is a persistent contaminant that remains in the soil for an extended period.
Need for Remediation
Experts recommend removing the top six inches of soil in contaminated areas to mitigate lead exposure risks. However, they emphasize that additional soil testing is needed to ensure the effectiveness of cleanup efforts.
Recovery Efforts
The Army Corps is coordinating cleanup and recovery efforts with state and local partners. Phase two of the operation involves the removal of contaminated ash and debris, including concrete foundations and the top six inches of soil in fire-impacted areas.
Community Concerns
Despite the Army Corps’ decision to forgo soil sampling, communities are eager to rebuild. Los Angeles County Supervisor Kathryn Barger has emphasized the importance of restoring facilities and communities swiftly and safely.
Government Response
California Governor Gavin Newsom and Los Angeles Mayor Karen Bass have signed executive orders to expedite recovery and rebuilding operations. Residents have submitted Right of Entry forms to allow the Army Corps to clear debris from private properties free of charge.
Conclusion
The lack of soil sampling by the Army Corps has raised concerns among experts and health officials about the potential risks of soil contamination following the Palisades and Eaton wildfires. Further testing is necessary to determine the extent and nature of the contamination and to identify appropriate remediation strategies. While cleanup efforts are underway, it is crucial to prioritize the safety and well-being of affected communities.
