This unit emphasizes awareness of potential health hazards you may encounter on the jobsite including asbestos, respirable crystalline silica, and radio frequency radiation. It includes sources of exposure to asbestos, silica, and radio frequencies, the health risks of exposure, and procedures for mitigating exposure. It also covers the exposure limit regulations and standards set by OSHA, the EPA, and FCC as well as your rights to access testing results and working safely.