Field Setup and Slug Test for Groundwater Sampler or Direct Push Monitoring Well

1. The Slug Test Manifold is threaded onto the top of the rods or installed with an adapter on well casing. Either an O-ring or Teflon® tape is used to seal the connection.

2. The pressure transducer is lowered through the rod bore so it is below the static water level a known distance. The transducer must be placed so that when the water level is depressed with air pressure the transducer is always below the water.

3. The airtight fitting on the transducer cable is tightened by hand to seal the connection.

4. Transducer cable is attached to the data logger.

5. Data logger is attached to 115 volt power supply. Power inverter from vehicle 12V outlet is sufficient.

6. Data cable from logger is attached to computer RS232 port for data transmission.

7. Computer is powered on and Slug Test Data Acquisition Software is activated.

8. Release valve is closed. Inlet valve is opened. Pressure regulator is closed.

9. Air supply (pump or compressed air cylinder) is attached to the quick connect at the pressure regulator.

10. The pressure regulator is slowly opened to pressurize well head and depress water level the selected distance. Usually less than 2 psi of air pressure is required.

11. Close inlet valve and leak check the system.

12. Monitor transducer response on computer screen and air pressure on gauge to verify system is stable.

13. Quickly open the release valve to initiate the slug test.

14. Allow sufficient time for water level to recover to static level. Slug test complete.

What the Data Looks Like...