Which agency applies the "target" designation to a dwelling and has set specific requirements for lead abatement and remodeling of these homes?

The correct answer is the EPA (Environmental Protection Agency), which is responsible for applying the "target" designation to homes regarding lead hazards. This designation is part of the efforts to address lead-based paint risks in older homes, particularly those built before 1978 when the use of lead-based paint was banned in residential properties.

The EPA has established specific guidelines and requirements for lead abatement and the safe remodeling of these homes to protect residents, especially children, from lead exposure. These guidelines include the Lead Renovation, Repair and Painting (RRP) Rule, which mandates that contractors follow certain practices when disturbing lead-based paint to minimize lead dust and contamination.

While other agencies may have roles in public health and safety or housing regulations, the specific focus on lead hazard mitigation in residential properties falls under the jurisdiction of the EPA, making it the authoritative agency regarding the target designation for lead safety in homes.