In drilling operations at a hazardous waste site, the exclusion zone is defined as what?

• A. the area on-site that is potentially contaminated and where workers must wear PPE as stipulated in the site specific health and safety plan
• B. the radius around the drilling site outside the site boundary
• C. the region outside the exclusion boundary
• D. the vertical interval of contamination

Answer: (A)

The exclusion zone in hazardous waste site drilling is the on-site area that may be contaminated and where workers must wear PPE and follow protections as specified in the site-specific health and safety plan. This zone is defined to control access and protect workers from exposure, based on the anticipated contaminants and activities at the site. It is an on-site boundary, not a radius outside the site boundary, and it isn’t a vertical interval of contamination. The PPE and procedures are specified in the site’s health and safety plan, which governs how this zone is implemented.