Which of the following practices is illegal when removing lead-based paint?

Using Methylene Chloride for paint stripping is illegal when removing lead-based paint because this substance is associated with serious health risks, including respiratory problems and potential toxicity. The Environmental Protection Agency (EPA) has identified Methylene Chloride as a carcinogen, and its use can pose significant danger to both the individual performing the removal and to occupants of the building. Regulations surrounding lead-based paint removal emphasize the use of safer methods and materials that minimize the risk of exposure to harmful substances.

In contrast, wet scraping with water is a method recommended to reduce dust and particulate release into the air, making it a safer option. Using sandpaper is typically discouraged but specific regulations can sometimes allow it when proper safety measures are taken. Wearing protective gear is essential and legally required during lead paint removal to protect workers from exposure.