Significance of Geologic Features on the Contaminant Migration from Landfill Sitesby Rao Nivargikar,
Abstract: Contaminants (leachate) migration pathways in various media at hazardous waste and landfill sites are primarily defined by the local geologic features at such sites, namely:stratigraphy, strata characteristics, and strata continuity and discontinuities. Off-site migration pathways, in turn, are further defined by the regional geologic features adjacent to these site(s) and their relationship with the local site features. These pathways are more often significantly modified by man-made activities and the landuse history. Understanding of the original and modified pathways is crucial for site remediations and off-site impact controls. Selection of remedial alternative(s) and its design, construction and performance are basically governed by these pathways. The significance of geologic features governing migration pathways are discussed herein including some case histories to illustrate their significance.
Subject Headings: Geology | Occupational safety | Hazardous wastes | Landfills | Remediation | Case studies
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