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HRSC/Subsurface Imaging - Tools & Detectors

Onsite Detectors - New Robust Technology

Eagle Synergistic Utilizes The Latest Technologies

Utilizing the newest technology in subsurface imaging services to increase critical data in the investigative phase, so that you can make a more informed decision in your remediation phase.

Logging & Imaging Tools

  • EC:  Electrical Conductivity
  • Mip:  Membrane Interface Probe
  • LL-Mip:  Low Level Mip
  • Hpt: Hydraulic profiling tool
  • MiHpt:  combined Mip-Hpt
  • Oip:  Optical Imaging Profiler
  • OiHpt:  combined Oip-Hpt
  • OiHpt-G: OiHpt with green light
MiHPT Probe copy

MIP

Membrane Interface Probe – The MIP is a logging tool that measures volatile hydrocarbon and solvent contamination along with soil electrical conductance and permeability. It then shows distribution and relative magnitude of both halogenated and non-halogenated VOC contaminants to work with both saturated and unsaturated soils.

An inert carrier gas is continually swept behind a heated membrane in the probe, delivering it to a series of detectors at the surface. The detectors each respond to different analyte properties which allows the MIP operator to discern the contaminant to its family group as well as provide the ability to map out the contaminant plume from source to extent. Obtaining an understanding of soil conductance and permeability along with the contaminant information allows the user to know if the VOC contamination is near to prominent migration pathways or bound up in a storage zone.

The MIP is the only tool capable of logging VOCs on-site in real-time. It determines contaminant mobility and migration pathways, detects contaminants in both coarse and fine-grained soils and generates real-time contaminant screening information. This feature allows field adjustment of the site investigation.

LL-MIP

Low Level Membrane Interface Probe — The LL-MIP operates in a similar manner to our normal MIP tool, however, the LL-MIP enhances detector sensitivity by a factor of approximately 10. LL-MIP operation is beneficial in situations where the standard MIP detector signals have reached practical limits.

The main feature of this technology is to pulse the carrier gas stream that sweeps the internal surface of the MIP membrane. VOC contaminant concentration that is delivered to the MIP detectors is then increased.

LLMIP Instrumentation
Geoprobe MIHPT probe

MiHPT

Membrane Interface & Hydraulic Profiling Tool – The MIHPT probe is a specialized, combined tool used to detect and determine volatile organic compounds (VOCs), soil permeability, and soil type/lithology all in one push. Volatile compounds diffuse through the MIP Membrane and a carrier gas transports the VOCs “up-hole” to detectors on the surface. The HPT system monitors the necessary pressure to maintain a constant injection. We can measure accurate water level data and estimate hydraulic conductivity from this information. Lastly, the Electrical Conductivity Dipole Array emits a current through the subsurface formation in between the two probe contacts. This current and the resulting voltage is measured and soil type can be determined by its conductivity.

OIP

Optical Image Profiler - This tool produces a detailed log of induced fuel fluorescence. It contains a downhole camera that operates at 30 frames per second (fps) to capture fuel fluorescence. Our acquisition software will then analyze each image for typical fuel fluorescence color.

The results are the percent of the image area (up to 100%) that displays fuel fluorescence. Fluorescence images are saved in the log every 0.05ft (15mm) for review at a later time.

OIP log Interpretation is intuitive, made simple by the saved images to compare to the log. The OIHPT-UV probe contains both 275nm UV and visible LEDs. The OIHPT-G probe contains both 520nm LD and infrared LEDs. With this tool, we're able to automatically and manually capture visible soil images.

Geoprobe OIHPT Probe
Surface instrumentation tools for high resolution site characterization.

OIHPT

Optical Interface Probe & Hydraulic Profiling Tool – The OIHPT is a specialized, combined tool that allows us to detect LNAPL products, test soil permeability, and understand soil type/lithology before your remediation phase. Rather than a MIP Membrane, the OIHPT tool has an OIP Window used to detect UV induced fluorescence of LNAPL products in soil (petroleum hydrocarbons).

This equipment can be divided into two basic categories: surface instrumentation (OIP interface, data acquisition, and HPT controller) and downhole probes (including probes, trunklines, connectors, etc.)

  • OP6100 OIP Interface: This instrument regulates, controls and monitors power to the OIP power supply and sends the system control signals to the downhole tools.  Images from the down hole camera are collected by the instrument and relayed to the computer via a USB connection.
  • FI6000: Data acquisition instrument, acquires depth, EC, and HPT data if avilable and relays it to the computer via a USB connection. The FI6000 is the general data acquisition instrument used in all Geoprobe® DI logging systems (EC and HPT). It also provides the electrical conductivity measurement system associated with OIP.
  • K6300 Series HPT Controller (Optional): This instrument regulates and measures injection water flow and pressure to the OIHPT probe. Data from this controller is sent to the FI6000 via a data cable.

OIHPT-G

Green light OIP tool — This tool operates in a similar manner to the OIHPT & OIP tools; however, it also uses a green laser diode to induce fluorescence in contaminants such as Creosote, Coal Tars, Heavy Crude Oils, and Bunker Fuels. This helps to fluoresce common organic contaminants that yield inconsistent results with standard UV light (coal tars, creosote, bunker fuels).

HRSC Tools Gallery

Scroll through our gallery to learn more about the technologies we use.

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