When evaluating the results of radon measurements, a lower Working Level indicates what level of radon concentration?

When evaluating the results of radon measurements, a lower Working Level indicates a lower concentration of radon in the environment. The Working Level (WL) is a measure of the short-lived radon decay products in the air, which can be harmful when inhaled over time. It is specifically designed to provide an indication of the potential health risks associated with radon exposure.

Low Working Level values signify that there are fewer radon decay products present in the air, which correlates directly to reduced radon concentration. In essence, as the Working Level decreases, it indicates a decrease in the number of decay products that can lead to lung issues and other health concerns, thus reflecting a safer indoor air quality with regard to radon.

In contrast, higher Working Levels would imply that there is a greater presence of radon decay products, leading to a higher concentration of radon gas and therefore a greater health risk. This understanding is crucial for evaluating radon exposure and implementing remediation strategies when necessary.