Indiana Administrative Code
Title 327 - WATER POLLUTION CONTROL DIVISION
Article 2 - WATER QUALITY STANDARDS
Rule 1.5 - Water Quality Standards Applicable to All State Waters Within the Great Lakes System
Section 1.5-6 - Bioaccumulative chemicals of concern

Universal Citation: 327 IN Admin Code 1.5-6

Current through March 20, 2024

Authority: IC 13-14-8; IC 13-14-9; IC 13-18-3

Affected: IC 13-18-4; IC 13-30-2-1

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

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