Which of the following are considered substrates when assessing lead hazards?

The correct answer encompasses materials that can be found in and around structures where lead may be present. When assessing lead hazards, substrates are the surfaces or materials in the environment that can harbor lead dust or residues, and the materials typically involved include wood, brick, and plaster.

Wood, when painted, can have lead-based paint applications, especially in structures built before 1978 when lead in residential paint was banned. Brick surfaces can also trap lead dust, particularly if lead paint was applied or if there were historical activities that might have introduced lead into the area. Plaster has similarly been a common substrate in older homes, often layered with lead paint. Recognizing these substrates is crucial for inspectors and assessors, as they indicate where lead hazards may persist and inform the necessary remediation strategies to ensure safety.

The other options include materials that are less commonly associated with lead hazards in residential or commercial settings. For instance, paper and glass are not typical substrates for lead dust accumulation, while sand and clay are not materials typically assessed in housing due to their inert nature in relation to lead hazards. Lastly, plastic, rubber, and textile are not classic substrates for lead inspection, as they are generally not prime locations for lead contamination. Understanding the nature of these substrates helps