On-Site Survey Monitoring
Remote sensing and subsurface investigative methods are crucial tools for locating buried wastes and contaminant plumes on hazardous waste sites.
3D Seismic Imaging
If necessary, use one or more of the following remote sensing or subsurface investigative methods to locate buried wastes or contaminant plumes:
- Electromagnetic induction (EM): This method measures the conductivity of the soil, which can be indicative of the presence of buried waste or contaminants.
- Seismic reflection/refraction: These methods involve generating sound waves and measuring their travel time and reflection patterns to create images of the subsurface.
- Magnetometry: This technique measures variations in the Earth's magnetic field caused by the presence of buried materials.
- Direct-Push Technology (DPT): DPT involves pushing small-diameter sampling tools into the ground to collect soil, water, or gas samples at various depths.
- Ground Penetrating Radar (GPR): GPR uses high-frequency radio waves to detect buried objects, interfaces between different materials, and changes in subsurface conditions.
Note any indicators of potential exposure to hazardous substances:
- dead fish, animals or vegetation
- dust or spray in the air
- fissures or cracks in solid surfaces that expose deep waste layers
- pools of liquid
- foams or oils on liquid surfaces
- gas generation or effervescence
- deteriorating containers
- cleared land areas or possible landfilled areas
Knowledge Check Choose the best answer for the question.
2-5. What is a remote sensing or subsurface investigative method used to locate buried waste or contaminant plumes?
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