Mundell performed a magnetic and terrain conductivity survey along a section of pipeline right of way to evaluate for the presence of cultural resources. This approach proved invaluable in mapping cultural features so that they could be avoided and remain intact……Read More »
Portfolio
(Case Histories)
Key: Case Histories (), Publications (), and Presentations ()
Geophysical and Detailed Site Mapping of Cemetery Grounds
Mundell used several geophysical methods to map out the extents of an old cemetery. This approach provided value both in terms of preserving the identity and locations of the known graves, and in offering insight into the locations of some unmarked graves. It was determined that high resolution conductivity mapping with a Geonics EM-38 combined with gridded GPR mapping appeared to have the best potential for mapping unmarked graves……Read More »
Geophysical Evaluation of Suspect Preferential Pathway for LPH Migration
Mundell used GPR to detect the presence of an un-documented, orphan UST located just south of a site undergoing active remediation. By performing a detailed comparison of the residual liquid phase hydrocarbon (LPH) material left in the tank with surrounding impacts on the property being remediated, Mundell was able to absolve the client of any fault for LPH in that portion of the site, saving thousands of dollars in remediation expenses. …..Read More »
Geophysical Methods Used to Locate Contaminant Flow Pathways
Mundell performed a multi-technique geophysical survey at an active industrial facility, to locate potential sources and migration pathways of a liquid phase hydrocarbon (LPH) seep detected in an adjacent river. Electromagnetic metal detection (EMD) and ground penetrating radar (GPR) were used to detect an unknown UST and tank pit, EM conductivity mapping was used to delineate the extent of impacted soils, and 2-D resistivity and seismic refraction were used to locate migratory pathways to the river……Read More »
Examination of Concrete Bridge Beams with GPR
Mundell was contacted by a state regulatory agency to test and confirm that the bridge beams of a new interstate bridge complied with design specifications, prior to the pouring of the bridge deck. Mundell performed a GPR survey of two random beams in order to verify the spacing of reinforcement and the placement of the pre-stressed (PS) cables. Mundell’s data satisfactorily convinced the regulatory agency of the proper construction of the bridge’s support features, allowing the construction process to continue in a timely manner and the bridge to be completed on time……Read More »
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