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  2. Suction excavator - Wikipedia

    en.wikipedia.org/wiki/Suction_excavator

    Typically, vacuum excavation loosens the soil with a blunt-nosed high-pressure air lance or water source and vacuums away loosened material. A suction excavator with vacuum excavation equipment operating in the Netherlands. Depending on the machine used and soil conditions, a 12-inch-square, 5-foot-deep pothole can be completed in 20 minutes or ...

  3. Soil vapor extraction - Wikipedia

    en.wikipedia.org/wiki/Soil_vapor_extraction

    Soil vapor extraction (SVE) is a physical treatment process for in situ remediation of volatile contaminants in vadose zone (unsaturated) soils (EPA, 2012). SVE (also referred to as in situ soil venting or vacuum extraction) is based on mass transfer of contaminant from the solid (sorbed) and liquid (aqueous or non-aqueous) phases into the gas phase, with subsequent collection of the gas phase ...

  4. Vacuum consolidation - Wikipedia

    en.wikipedia.org/wiki/Vacuum_consolidation

    Vacuum consolidation (or vacuum preloading) is a soft soil improvement method that has been successfully used by geotechnical engineers and specialists of ground improvement companies in countries such as Australia, China, Korea, Thailand and France for soil improvement or land reclamation. [1]

  5. Vacuum truck - Wikipedia

    en.wikipedia.org/wiki/Vacuum_truck

    Vacuum trucks can also be used for cleanup of contaminated soil. For some instances, air excavation may be used in place of hydro excavation. Air excavation, also known as soft dig, uses compressed air to break up the ground and then vacuums up the soil into the debris tank.

  6. Subsurface utility engineering - Wikipedia

    en.wikipedia.org/wiki/Subsurface_utility_engineering

    Vacuum excavation techniques are employed to expose and record the precise horizontal and vertical position of the assets. This information is then typically presented in CAD format or a GIS-compatible map. A conflict matrix is also created to evaluate and compare collected utility information with project plans, identify conflicts and propose ...

  7. Federal judge delays 9/11 deals that would have found terror ...

    www.aol.com/federal-judge-delays-9-11-035054001.html

    Khalid Sheikh Mohammed and two al-Qaeda operatives were expected to plead guilty to planning 9/11. Instead, a D.C. court put those plans on hold.

  8. Groundwater remediation - Wikipedia

    en.wikipedia.org/wiki/Groundwater_remediation

    Dual-phase vacuum extraction (DPVE), also known as multi-phase extraction, is a technology that uses a high-vacuum system to remove both contaminated groundwater and soil vapor. In DPVE systems, a high-vacuum extraction well is installed with its screened section in the zone of contaminated soils and groundwater.

  9. Stash of Roman-era coins buried 2,000 years ago found in field

    www.aol.com/stash-roman-era-coins-buried...

    An archaeologist then examined the findings to confirm their veracity, and a larger excavation was conducted. The majority of the artifacts were Roman coins dated between 46 and 47 A.D., around ...