Soil Gas Sampling

RSI Drilling Soil Gas Sampling Standard Operating Procedures:

• Connect expendable drive point to Post Run Tubing expendable point holder.
• Adapt PRT point holder to 1.5" steel rods.
• Advance rods to predetermined depth.
• Release expendable point and expose end of probe by retracting rods approximately 6".
• Connect PRT tubing adapter to client selected tubing.
• Connect tubing to PRT point holder.
• Seal drill rods at surface of borehole and top of the rod where tubing is inserted using hydrated bentonite to inhibit surface air infiltration into the system.
• Allow bentonite to hydrate and conduct leak test.
• Allow at least a 30 minute equilibrating period before purging and collecting soil gas sample.
• Grout boring upon completion.

RSI Drilling follows the latest guidelines put forth by DTSC and the Los Angeles Regional Water Control Board. For additional questions regarding RSI Drilling's soil gas sampling procedures please contact us.