Who is responsible for following a quality control plan?

The responsibility for following a quality control plan primarily lies with those who place or retrieve tests, as well as analytical labs. These individuals are on the front lines of ensuring that the testing processes are executed correctly and that the results are reliable. They are trained to adhere to the specific protocols outlined in the quality control plan, which is essential for maintaining consistency and accuracy in testing procedures. Their adherence to these quality control measures is crucial, as it directly affects the validity of the data collected and the outcomes of mitigation efforts.

While project managers, homeowners, and supervisory staff play important roles in the overall project, they are not typically the ones directly executing the quality control processes for testing and analysis. Project managers may oversee the project and ensure that plans are followed, but they do not conduct the tests themselves. Homeowners might be involved in discussions about the results, and supervisory staff may support the process, but they do not have the hands-on responsibility for quality control in the same way that the testing personnel do. Therefore, option B accurately captures the primary responsibility for implementing and adhering to a quality control plan.