327 IAC 2-1.5-6 Bioaccumulative chemicals of concern

Sec. 6. (a) A bioaccumulative chemical of concern (BCC) is any chemical that meets the following requirements: (1) Has the potential to cause adverse effects. (2) Has a half-life of at least eight (8) weeks in the water column, sediment, and biota. (3) Upon entering the surface waters, by itself or as its toxic transformation product, accumulates in aquatic organisms by a human health bioaccumulation factor (BAF) greater than one thousand (1,000) after considering metabolism and other physicochemical properties that might enhance or inhibit bioaccumulation, in accordance with the procedure in section 13 of this rule. The minimum BAF information needed to define a chemical as a BCC is either of the following: (A) For an organic chemical, either a field-measured BAF or a BAF derived using the BSAF methodology. (B) For an inorganic chemical, including an organometal, either a field-measured BAF or a laboratory-measured BCF. (b) Pollutants that are BCCs include, but are not limited to, the following: Table 6-1 Bioaccumulative Chemicals of Concern CAS Number Substance 57749 Chlordane 72548 4,4'-DDD; p,p'-DDD; 4,4'-TDE; p,p'-TDE 72559 4,4'-DDE; p,p'-DDE 50293 4,4'-DDT; p,p'-DDT 60571 Dieldrin 118741 Hexachlorobenzene 87683 Hexachlorobutadiene; hexachloro-1,3-butadiene 608731 Hexachlorocyclohexanes; BHCs 319846 alpha-Hexachlorocyclohexane; alpha-BHC 319857 beta-Hexachlorocyclohexane; beta-BHC 319868 delta-Hexachlorocyclohexane; delta-BHC 58899 Lindane; gamma-Hexachlorocyclohexane; gamma-BHC 7439976 Mercury 2385855 Mirex 29082744 Octachlorostyrene 1336363 PCBs; polychlorinated biphenyls 608935 Pentachlorobenzene 39801144 Photomirex 1746016 2,3,7,8-TCDD; dioxin 634662 1,2,3,4-Tetrachlorobenzene 95943 1,2,4,5-Tetrachlorobenzene 8001352 Toxaphene (c) The substances established in this subsection shall be treated as BCCs under 327 IAC 2-1.3, this rule, and 327 IAC 5-2-11.4 through 327 IAC 5-2-11.6. If additional data becomes available (such as a field-measured BAF) for a substance established in this subsection that conclusively demonstrates that the substance should not be treated as a BCC, the commissioner may determine that it is not necessary to treat the substance as a BCC. Substances treated as BCCs include the following: Table 6-2 Substances Treated as Bioaccumulative Chemicals of Concern CAS Number Substance 309002 Aldrin 72208 Endrin 76448 Heptachlor