Chemical:
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD), Arsenic (inorganic arsenic compounds), Asbestos, Cadmium, Ceramic fibers (airborne particles of respirable size), Chromium (hexavalent compounds), Hexachlorodibenzodioxin, Lead, Mercury, Nickel, Polychlorinated dibenzo-p-dioxins, Polychlorinated dibenzofurans, Radionuclides, Silica, crystalline (airborne particles of respirable size)