| Use: | Well purging and collection of ground water samples. |
Description:
The pump consists of a foot valve at the end of a flexible tube which runs to the surface. At the beginning of sampling, the water column in the sampling tube is equal to that in the well. A levered handle or gasoline motor drive provides a continuous up-and-down movement of the tubing. An initial rapid upstroke lifts the water column in the tubing a distance equal to the stroke length. At the end of the upstroke, the water continues to move slightly upward by inertia. On the down stroke, the foot valve opens allowing fresh water to enter the tube.
Analytes:
| 1. Non-Halogenated VOCs | 5. PAHs | 9. Inorganics |
| 2. Non-Halogenated SVOCs | 6. Pesticides/Herbicides | 10. Explosives |
| 3. Halogenated VOCs | 7. Metals | 11. TPHs |
| 4. Halogenated SVOCs | 8. Radionuclides |
Media:
| Soil: | Ground Water: | Surface Water: | Gas/Air: |
| Not Applicable | MINIMUM | MINIMUM | Not Applicable |
| Maximum Depth: | Up to 100 feet. Minimum well diameter: 1.5 inches. |
| Production Rate: | Sample is available after a short amount of time. 0 to 2 gallons per minute. |
| Investigation Derived Waste Volume: | Medium volume of waste. |
| Technology Status: | Commercially available technology with moderate field experience. |
| Certification/Verification: | Technology has not participated in CalEPA certification and/or CSCT verification program. |
| Relative Cost per Sample: | Least expensive. |
Limitations:
ASTM Standards/EPA Methods:
No applicable ASTM standards or EPA methods are cited for this technology.
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