United States Department of Transportation
i
Summary of Illinois Regulations and Review of Treatment Alternatives for Contaminated Soils in Right-of-Ways
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2020-09-01
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[PDF-1.38 MB]
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Edition:Task 2 report 2/1/18–9/30/20
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Abstract:Industrial activities and vehicular transportation often pollute roadside soils with toxic mixtures of petroleum derivatives, combustion byproducts, and metal contaminants. Of these contaminants, semi-volatile organic compounds and metallic inorganics are commonly present at levels exceeding regulatory limits and require special handling if found in land to be acquired by the Illinois Department of Transportation (IDOT) for right-of-way (ROW). The objective of this review was to investigate various on-site and in situ treatment alternatives capable of remediating soil contaminated with high-molecular-weight polycyclic aromatic hydrocarbons and/or metals. Current environmental laws, regulations, and remediation best management practices were also reviewed as they pertain to contaminated soils in construction ROWs. The goal of the review was to provide IDOT with the information needed to reexamine the current practice of hauling contaminated soil off site for disposal at sites where contemporary technologies can achieve reductions in cost, time, and nuisance. The ultimate goal was to evaluate both conventional and emerging technologies adaptable for use at construction sites in Illinois, capable of treating soil to the extent it may be reused as fill material in line with state and federal regulations. Findings from this review were used to develop an experimental program and recommend effective on-site treatment options to minimize the generation of non-special, special, and hazardous wastes. The suggested treatments herein are conditionally cost-effective processes that minimize construction delays while demonstrating respect for the environment.
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