UVOST® efficiently delineates petroleum, oil, and lubricant (POL) contaminants in the subsurface. All the usual forms of POLs, including; gasoline, diesel fuel, jet fuel, and hydraulic fluids, can be detected via the fluorescence response of their polycyclic aromatic hydrocarbon (PAH) constituents. The fluorescence signal is directly proportional to concentration.  All the usual forms of POLs, including; gasoline, diesel fuel, jet fuel, creosote, coal tar, and hydraulic fluids, can be detected via the fluorescence response of their polycyclic aromatic hydrocarbon (PAH) constituents. The fluorescence signal is monotonically proportional to concentration.

The LIF technique, in conjunction with direct push deployment, yields a detailed three-dimensional map of the contaminant distribution. 

Major Benefits of UVOST®

• Typical detection limit of < 100 ppm
• Operates effectively above and below the saturated zone
• Fast – typical daily productivity of 300-500 feet across 10-20 locations
• One inch data density coupled with nearly instantaneous response provides continuous detailed log of product distribution and heterogeneity
• Color-coded logs for the ultimate in qualitative information "at-a-glance"
• Waveforms offer product identification/verification and rejection of non-contaminant fluorescence such as mineral, peat, and other minor interferents
• Advanced UVOST® data analysis service from Dakota harvests waveform information to allow custom analyte isolation and/or interference rejection in the logs
• CPT and percussion Geoprobe deliverable – if Geoprobe sampling gets there, UVOST® can get there

UVOST® is designed for rugged conditions

Certified Providers 

The following providers have undergone extensive training at Dakota and provide UVOST® service. Listing is alphabetical.

• Arcadis GMI
  
• Columbia Technologies, LLC
  
• Fugro Consult GMBH
  
• Gregg Drilling & Testing, Inc.
  
• Hammer Environmental
• Matrix Environmental, LLC  
• West Central Environmental Consultants

UVOST® System Characteristics 

• Power 110V AC 50-60 Hz (>=2kW generator)
• Dimensions are 25" H x 24" W x 26" L cased
• Weight ~120 lbs/54.5 kg cased instrument
• Operating Temperature 32-100 °F
• Storage Temperature 0-120 °F
• Limit of Detection (LOD) <= 100 ppm fuel/wet sand
• Excitation 308nm XeCl Laser (64Hz)
  

More Information

UVOST® Brochure (PDF Document)

LIF Introduction page provides a preliminary discussion of LIF technology

Distributors of UVOST®