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You are here: Home / Portfolio / Bedrock Mapping for Petroleum Remediation Project

Bedrock Mapping for Petroleum Remediation Project

portfolio typeCase Historiespdf iconDownload this as PDFPosted on June 17, 2012

2D GRM cross sections of seismic refraction data

2D GRM cross sections of seismic refraction data

Challenge

In conjunction with ongoing investigation and remediation activities, Mundell was retained to complete a geophysical survey at a former bus depot in a major midwestern city. The facility has been the site of ineffective remedial activities associated with the release of petroleum hydrocarbons, mainly gasoline and diesel fuels. Because it has been inferred that bedrock topography had influenced contaminant migration, the primary goal of this survey was to fully characterize the top of the bedrock surface to determine product locations.

Action

A seismic refraction survey was chosen as the most appropriate method for mapping the bedrock surface. The seismic refraction data were processed to produce a series of two-dimensional cross sections across the Site (see inset above).

Results

A detailed bedrock topography contour map (see inset below) revealed the release pathway for free product to move and accumulate in the northwest corner of the site, as well as the likely off-site pathway. This information allowed for an effective product recovery system design to improve the rate of cleanup and ultimately to reach an approved site closure.

Bedrock Topography Map using GRM cross sections

Bedrock Topography Map using GRM cross sections

more information Learn about our related services (Geophysics)

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Our Affiliations

- Midwestern States Environmental Consultants Association
- Environmental & Engineering Geophysical Society
- Professional Geologists of Indiana, Inc.
- National Ground Water Association
- American Societies of Chemical / Civil Engineers Engineers without Borders
- Association of Environmental and Engineering Geologists
- Indiana Association for Environmental Professionals
- Geological Society of American
- Indiana Circular Economy Initiative
- Economy of Communion
- Indiana Recycling Coalition

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