|
|
Using
Sitelab to Map Plumes of Subsurface Oil...
Are you managing petroleum sites with subsurface plumes of NAPL
(Non-Aqueous Phase Liquids)? Maybe at an oil refinery, fuel
storage site, military base or Brownfield site? If so, use Sitelab's
oil forensics field screening application for testing NAPLs for
their diesel range
and gasoline range content. This case study illustrates a
one day site investigation on a 30-acre tank farm site where 40
monitoring wells were sampled and tested by the
Sitelab
UVF-3100 analyzer and the test results were mapped by the client,
Ambient Engineering, Inc. (Concord, MA).
By testing each
monitoring well's DRO and GRO concentrations in oil, environmental
engineers can better delineate the migration and type of
contamination found in commingled plumes of oil or the degree of
weathering in single source plumes, critical in helping to design
recovery systems, monitor the progress of remediation and many other
advantages at a fraction of the time and cost compared to
conventional laboratory techniques. From start to finish, each
test took less than 5 minutes to perform. Over 80 test results
were reported in a single day at a cost of only $20 per test!
|
Loading racks (above) were once used to
fill up trucks, which distributed heating oil throughout the region.
The No. 6 fuel (Bunker C oil), was used for refueling naval ships
and a nearby power plant. |
|
1.
Using Sitelab's adjustable pipette and extraction kits, a small
portion of each oil sample is first transferred to a test tube. |
|
2.
Each oil is then diluted in solvent down to the same concentration,
so that each sample will be detected within the calibration range. |
|
3.
Sample dilutions poured into a glass cuvette and then placed into
the UVF-3100 for analysis, which displays the result in 5 seconds. |
|
4.
After performing DRO analysis, the UVF-3100's optical filters are
rotated and the oil samples are re-tested to a GRO (BTEX)
calibration. |
