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Vertical Profiling
LNAPL Plume at Fuel Oil Site:
Environmental engineers needed quick and accurate screening
analysis on a tank farm
contaminated with a subsurface plume of
fuel oil.
Sitelab's data was used for delineating several vertical profiles of the smear zone.
They needed to
quantify the size of the plume in order to design a recovery system.
Samples were tested from the surface down to twenty feet.
A total of nine soil samples were split
and sent to a certified laboratory for confirmatory analysis using
EPA Method 8100 by GC/FID, which correlated directly.
Sitelab’s field results were critical in helping the engineer to
calculate the total mass of product at over 300,000 gallons.
Managing LNAPL on
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Geoprobe drilling contractor
was used to collect soil borings at different depths.
Samples were tested on-site for diesel range hydrocarbons with
Sitelab's EDRO calibration kit. In one day, 35 samples were tested from four borings at
a cost of
$40 per test. |
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Environmental Site
Assessment:
A consultant used Sitelab to investigate a
commercial property which once had fuel oil tanks stored above and
below ground. Since
the site was located in Massachusetts, the state regulatory agency
requires laboratories to use the MADEP's Extractable Petroleum
Hydrocarbons method, a modified EPA 8015-DRO method that uses
similar GC/FID instrumentation, but splits the test into specific
aliphatic and aromatic hydrocarbon fractions. Sitelab's UVF technology cannot detect aliphatics; only aromatic
hydrocarbons fluoresce. So why is the UVF-3100 analyzer so
accurate when compared to these gas chromatography methods? Sitelab's EDRO calibration kit was specially
developed to account for all hydrocarbons in the C10-C36 diesel and
oil range. This is our most commonly used calibration product. |
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