Patent No. 5,612,498

1. Driving
The assembled Screen Point 15/16 Groundwater Sampler is driven to the desired sampling depth using standard Geoprobe® rods.

2. Deployment
Extension rods are used to hold the screen in position while the rods and sheath are retracted. The screen sheath forms a mechanical annular seal above the screen interval.

3. Sampling
The tubing check valve can be used to sample and measure NAPLs within the scree interval as well as sample groundwater. A small bladder pump may be used to collect high-integrity VOC samples.

4. Grouting
Abandonment grouting can be conducted to meet ASTM guidelines. A high-pressure grout pump is used to pump grout into the probe hole as the screen and rods are extracted using the rod grip pull assembly.