How must sheet vinyl resilient floor coverings be removed under appendix B methods?

The correct answer is that sheet vinyl resilient floor coverings must be removed in neat rolls under appendix B methods. This method is recommended because removing the flooring in neat rolls minimizes the disturbance of the material, helping to control the release of asbestos fibers during the removal process. This is particularly important when dealing with asbestos-containing materials, as the goal is to limit exposure and maintain a safe environment for those involved in the removal.

Removing flooring in neat rolls is also more efficient as it allows for easier handling and transportation of the material after it's been extracted. This method ensures that the remnants of the flooring are contained, reducing the risk of contamination in the surrounding area.

In contrast, removing the flooring in pieces, large sections, or strips can create more potential for airborne fibers and increase the risk of exposure, which is why those approaches do not align with the recommended practices outlined in appendix B.