Which type of measurements should be made side-by-side in at least 10% of the total number of measurement locations?

Making duplicate measurements side-by-side in at least 10% of total measurement locations is crucial for ensuring data reliability and quality. This practice allows for a comparison of the results obtained from two independent tests conducted simultaneously at the same location. When duplicates are taken, they help to identify any inconsistencies in the measurements, assess the precision of the radon detection methods used, and validate the data's accuracy.

In radon measurement, achieving high precision is essential, as even slight variations can significantly affect interpretation and subsequent actions, such as the need for radon mitigation. By conducting duplicates, service providers can identify if there are discrepancies due to various factors, such as environmental conditions, equipment performance, or sample handling.

This practice contributes to the overall credibility of the radon measurement process by demonstrating adherence to quality assurance protocols, which are vital in building trust with clients and regulatory bodies. Conducting duplicate measurements helps to establish a baseline for what one might expect in terms of variability within their results, reinforcing the integrity of the findings in situations where radon exposure is concerned.