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These case studies illustrate the performance using
Sitelab’s UVF-3100 for testing extended diesel range organics (EDRO).
The analyzer is fitted with optical filters sensitive to hydrocarbons commonly found in heating oils, diesel fuels,
waste oils and crude oil.
Sitelab’s EDRO calibration kit correlates well to EPA Method
8015-DRO and similar GC/FID test
methods. |
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Fuel Oil Site: What is Vertical
Profiling?
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
your site?
»See
our LNAPL Applications |
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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 the 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. |
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When all three fractions are added together, the GC/FID's Total EPH
is similar to U.S. EPA's popular 8015M method for TPH in the C10-C36 range.
»How does
fluorescence work? |
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EPA Triad Project
at Power Plant Site:
The U.S. EPA performed a successful Triad project at the
former Cos Cob power plant located just north of New York City in Greenwich, Connecticut,
where the local community wanted to redevelop the land into a
recreational area. Soils
were contaminated with weathered fuel oil, lubricating oils and fly ash.
Sitelab results were compared to CT-DEP's Extractable
Total Petroleum Hydrocarbons (ETPH), a similar method
as EPA Method 8015-DRO.
"TPH
results correlated very well with fixed laboratory results and
could be used to make subsequent decisions for the site.
Results from the field test kit for TPH provide a more powerful
tool for making site decisions." Page 40
»Click to see:
EPA's Triad Report for this project (PDF)
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»See
aerial photo of site
In less than a week, 93
soils were collected and field screened for both TPH and PAHs
using Sitelab's UVF-3100A. U.S. EPA reported project cost
savings was 35%.
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