Chemical:
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD), Arsenic (inorganic arsenic compounds), Cadmium, Cadmium and cadmium compounds, Cobalt [II] oxide, Hexachlorodibenzodioxin, Lead, Lead acetate, Lead and lead compounds, Lead phosphate, Mercury, Mercury and mercury compounds, Methylmercury compounds, Nickel, Nickel compounds, Polychlorinated biphenyls, Polychlorinated dibenzo-p-dioxins, Polychlorinated dibenzofurans, Radionuclides, Silica, crystalline (airborne particles of respirable size)