RoseyFields conducted a comprehensive environmental impact and risk assessment following a catastrophic transportation incident that resulted in a large-scale chemical spill and subsequent uncontrolled combustion events. We evaluated the release and environmental distribution of hazardous materials originating from compromised bulk transport containers. Our team identified and assessed multiple highly toxic chemicals of concern, including volatile organic compounds (VOCs) such as vinyl chloride and various acrylates, as well as persistent combustion byproducts, specifically polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and polycyclic aromatic hydrocarbons (PAHs) like benzo(a)pyrene. The project scope focused on characterizing the extent of the chemical contamination on surrounding commercial and residential properties to evaluate the resulting human health and environmental risks.
To determine the precise spread of these contaminants, our team performed advanced air dispersion modeling and extensive deposition analysis using industry-standard regulatory software. We integrated complex meteorological data, site-specific terrain inputs, and detailed emission source terms to evaluate the fate and transport of both visible and invisible chemical plumes generated by the intense fires. Furthermore, RoseyFields conducted rigorous environmental forensics by analyzing extensive soil, water, and sediment sampling data. This allowed us to definitively distinguish the chemical signature of the acute release from preexisting historical industrial background levels. We evaluated key exposure pathways, focusing on the atmospheric transport of particulate matter and the subsequent long-range deposition of soot-bound contaminants into local soils, effectively tracking how airborne pollutants migrated and settled onto adjacent properties.
Our overall assessment approach relied on comparing modeled deposition footprints and empirical environmental sampling results against established regulatory health screening levels. By mapping the multidirectional dispersion pattern of the chemical plumes, we evaluated how the incident impacted the surrounding environment. This advanced spatial and technical analysis enabled us to accurately identify and characterize the affected populations and potential exposure classes based on the geographic overlap of the contamination zone with local properties. We successfully characterized the community-wide risk of incidental soil ingestion, dermal contact, and the inhalation of resuspended contaminated dust, ultimately demonstrating how acute industrial releases migrate off-site to create widespread, persistent environmental health concerns.
