“STEL is the maximum concentration of a chemical to which workers may be exposed continuously for a short period of time without any danger to health, safety or work efficiency” (Haight, 2012, p.52). All three should be used when considering the toxicity of a spilled hazardous material. “Chemical levels are considered immediately dangerous to life or health so response workers should not be allowed to enter the area without proper PPE” (Haight, 2012,
“STEL is the maximum concentration of a chemical to which workers may be exposed continuously for a short period of time without any danger to health, safety or work efficiency” (Haight, 2012, p.52). All three should be used when considering the toxicity of a spilled hazardous material. “Chemical levels are considered immediately dangerous to life or health so response workers should not be allowed to enter the area without proper PPE” (Haight, 2012,