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Table 4: List of Organic Persistent and Bioaccumulative Toxic Substances <br /> and Their STLC and TTLC Values <br /> TTLC <br /> Wet <br /> STLC Weight <br /> Substance mg/I mg/kg <br /> Aldrin 0.14 1 .4 <br /> Chlordane 0.25 2.5 <br /> DDT, DDE, DDD 0.1 1 .0 <br /> 2,4-Dichlorophenoxyacetic acid 10 100 <br /> Dieldrin 0.8 8.0 <br /> Dioxin (2,3,7,8-TCDD) 0.001 0.01 <br /> Endrin 0.02 0.2 <br /> Heptachlor 0.47 4.7 <br /> Kepone 2.1 21 <br /> Lead compounds, organic - 13 <br /> Lindane 0.4 4.0 <br /> Methoxychlor 10 100 <br /> Mirex 2.1 21 <br /> Pentachlorophenol 1 .7 17 <br /> Polychlorinated biphenyls (PCBs) 5.0 50 <br /> Toxaphene 0.5 5 <br /> Trichloroethylene 204 2,040 <br /> 2,4,5-Trichlorophenoxypropionic 1 .0 10 <br /> acid <br /> 14 <br />