Underground Storage Tank (UST) Geophysical Survey
Geotechnology conducted geophysical surveying at the subject property consisting of a 1.21-acre asphalt-covered parking lot located at 235 Union Avenue in Memphis, Tennessee. In the northern portion of the subject site (approximately 120 foot by 200 foot area), ground penetrating radar (GPR) was used in an attempt to locate possible
underground storage tanks (USTs) that were associated with a former service station that was located in the northern portion of the subject site (based on the preliminary findings of our Phase I Environmental Site
The remainder of the site will be surveyed using frequency-domain electromagnetics with an EM31. A Scope of Services is attached. The field survey required only one day to complete. Preliminary findings of the geophysical surveying were provided to the client within 5 business days of data acquisition.
After collecting and analyzing the GPR and EM31 data, Geotechnology summarized the geophysical survey results in the Phase I Environmental Site Assessment report that included a description of the geophysical methods, data collection procedures, a contour map of the EM data, representative GPR data, and a site plan showing interpreted locations of USTs based on the geophysical data.