How often should suction measurements in the main riser pipe be recorded during the operation of an ASD system?

Recording suction measurements in the main riser pipe at least once upon completion of an Active Soil Depressurization (ASD) system is crucial for ensuring effective system performance. This initial measurement serves as a baseline, allowing specialists to verify that the system is functioning as designed and to confirm that appropriate vacuum levels are achieved to mitigate radon effectively.

Additionally, while ongoing monitoring may be beneficial for optimization and troubleshooting, the requirement to capture at least one measurement upon completion reflects a practical approach, ensuring that key data is established without overwhelming operators with excessive monitoring tasks. This balances operational efficiency with the need to safeguard indoor air quality by confirming that the ASD system is successfully reducing radon levels.

Other options suggesting daily, weekly, or issue-based measurements might imply a frequency of monitoring that could lead to unnecessary resource expenditure or may not align with standard operational protocols typically recommended in radon mitigation guidelines. In contrast, the focus on obtaining a measurement after system completion underscores the importance of confirming initial system efficacy, thereby establishing a clear benchmark for future assessments if concerns do arise.