See the Solution with GeoTrax SurveyTM	Page:  1  2  3  4  5  6  7

This trucking facility located in the Midwest had a leaking diesel UST that was replaced with a new tank. Remedial investigation via monitoring wells indicated widespread dissolved phase contamination within site boundaries. Approximately $250K was spent from the state’s UST cleanup fund to inject oxygen releasing compound (magnesium peroxide) into the subsurface. Subsequently, free-product appeared in 3 site monitoring wells. Aestus was called in to use our GeoTrax SurveyTM technology to assist in re-characterizing the site. Aestus detected “blobs” of LNAPL (diesel) source areas at a number of places across the site. Additionally, Aestus was able to map the extent of dissolved phase contamination as confirmed by our client during a subsequent confirmation boring program.

Bottom Line: PID (VOCs in ppm) peaks at water table as expected Only dissolved phase VOCs & SVOCs are present (i.e., no LNAPLs); measured at Concentrations up to 220 ug/L

Bottom Line: LNAPLs are present at one foot thick or greater VOCs & SVOCs measured in soil sample at concentrations up to 90,000 mg/kg PID (VOC’s in ppm) peaks at water table as expected

Bottom Line: LNAPLs are present at ~3 feet thick VOCs & SVOCs measured in soil at concentrations up to 2,300 mg/kg VOCs &SVOCs measured in groundwater at concentrations up to 42 ug/L PID (VOCs in ppm) peaks near water table as expected

Copyright 2006,   Aestus, LLC   All rights reserved.