I keep getting tracer/leak gas detections in my samples, and the regulators are not accepting the data. What am I doing wrong?
The problem probably stems from any one or all of the following scenarios: • Collecting too large a volume of soil-gas sample (>1 liter) too close to the surface • Not adequately sealing at the surface of the ground where the probe rod enters • Leakage at the coupling inside the probe rod, if the post-run tubing method is being used • Using a permeable tubing to collect soil-gas samples • Loose fittings on your sampling system train