Environmental Protection Agency (EPA) Lead Risk Assessor Practice Exam

What is the cost advantage of single wipe sampling compared to other methods?

1. It's generally more efficient

2. It has a lower cost per sample

3. It requires fewer samples overall

4. It reduces the need for lab testing

The correct answer is: It has a lower cost per sample

The cost advantage of single wipe sampling lies in its lower cost per sample. This method is typically less expensive than alternative sampling techniques because it simplifies the process by utilizing a straightforward collection technique that requires fewer resources, both in terms of materials and labor. Single wipe sampling allows for quick collection of lead from surfaces with minimal professional effort and equipment, reducing the operational costs associated with fieldwork. This method does not compromise the integrity of the sample while enabling efficient collection that can yield sufficient data to effectively evaluate lead risk. Moreover, the efficiency of this method can lead to savings over time, especially when large numbers of samples are necessary for comprehensive assessments. Comparatively, other methods may involve more comprehensive processes, such as the need for multiple sample types or specific laboratory analyses that increase overall costs. In contexts where budget constraints are a concern, the ability to achieve reliable data at a lower financial expenditure makes single wipe sampling an advantageous option.