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Learn more about Sitelab's calibration kit for EDRO applications used in these case studies:

 
 
 

     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.
 

 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

 

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.


 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.

 

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?


 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)

 
»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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